repeating unit of polystyrene

Here's an example: We notice that the repeating unit is linked to the rest of the chain by amide functional groups, and that the repeating unit contains an amide group. 1. We can deduce the structrure of the monomers by imagining the compounds which might be used to make the amide group. Addition polymerization of an alkene. Thus, the molecular weight of the styrene repeat unit is: m s = 8(A C) + 8(A H) = 8(12.01 g/mol) + 8(1.008 g/mol) = 104.14 g/mol Let f b be the chain fraction of butadiene repeat units. Join Yahoo Answers and get 100 points today. The brackets contain the repeating unit. ... (polyvinyl chloride), styrene (phenylethylene, polystyrene), methyl methacrylate (Plexiglas), and acrylonitrile (cyanoethylene, acrylic fibers). Thus, m = 8(A C) + 8(A H) = (8)(12.01 g/mol) + (8)(1.008 g/mol) = 104.14 g/mol (b) We are now asked to compute the number-average molecular weight. Source(s): https://owly.im/a8y7V. Attend recorded … The effect of nanoconfinement on the glass transition temperature (Tg) of supported polystyrene (PS) films is investigated over a broad molecular weight (MW) range of 5000−3 000 000 g/mol. 1,2-poly(1,3-butadiene) has a vinyl-type structure, where the substituent group (ethene) contains an unsaturated … For polyethylene, arguably the simplest polymer, this is demonstrated by the following equation. In your answer you should explain why the polymers formed in these two reactions are different. (a) Draw the structure of the repeating unit in the superglue polymer. Polymer is a combination of small … 1. Teflon: Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene. Hydrogen is an explosive gas, oxygen supports combustion, why, when adding 2 hydrogen atoms to 1 oxygen atom, is the result an inert liquid? It is an inexpensive resin per unit weight. A commercially important ABA-triblock copolymer is polystyrene-block-polybutadiene-block-polystyrene or SBS, a ... ,3-butadiene) (C and D). Include All H Atoms. Condensation polymers: repeat unit and structural units, Rudin A. Dacron consists of polymerized units of the monomer ethylene terephthalate, with repeating ( C 10. ) (b) Compute the number-average molecular weight for a polystyrene for which the degree of polymerization is 25,000. A single polymer molecule may consist of hundreds to a million monomers and may have a linear, branched, or network structure. What is the value of n if the molecular mass of a single polymer chain is 1.5782 10 6 A) 1.217 10 8 units. d) Polypropylene has a repeat unit of (C 3H 6). ... PS = Polystyrene; PP = Polypropylene; PVC = Poly(vinyl chloride) PET = Poly(ethylene terephthalate) acid polyamide 6 (nylon 6) In the last example, where the synthesis reaction requires the alternate combination of two different monomers, the repeating unit is formed by two … polystyrene, from Table 5.3, each repeat unit has eight carbons and eight hydrogens. Citing Literature A copolymer consists of two or more different monomers as repeating units, such as the diblock copolymer: and the random or static copolymer: An example is the polystyrene-poly(methyl methacrylate) copolymer. C) 3.031 10 4 units. 0 0. Here ethylene (ethene) is the monomer, and the corresponding linear polymer is called high-density polyethylene (HDPE). One of the simplest repeat units is that of the addition polymer polyvinyl chloride, I'm given the structure, and I have to count all the elements in the structure. B) Compute the number-average molecular weight for a polystyrene for which the degree of polymerization is 25,000. "Elements of Polymer Science and Engineering" (Academic Press 1982) p.3, "Glossary of basic terms in polymer science (IUPAC Recommendations 1996)", https://en.wikipedia.org/w/index.php?title=Repeat_unit&oldid=961970565, Creative Commons Attribution-ShareAlike License, This page was last edited on 11 June 2020, at 11:11. (b) A simplified representation of polyvinyl acetate. Trending questions. Trending questions. constitutes the repeating units. In Reaction 5, since the double bond is in a different position (the C1 position), the polymer formed will have as its repeating unit a carbon atom with 2 hydrogen atoms attached, and a carbon atom with one hydrogen attached and a … [3] A polymer is composed of many simple molecules that are repeating structural units called monomers. Although we commonly like to draw the structure of polystyrene as the isotactic structure because it is easy to see the repeating units, in fact, when styrene monomers are polymerised very little of the resulting polystyrene is in the isotactic form. For polystyrene, from Table 14.3, each repeat unit has eight carbons and eight hydrogens. A copolymer consists of two or more different monomers as repeating units, such as the diblock copolymer: and the random or static copolymer: An example is the polystyrene-poly(methyl methacrylate) copolymer. (ii) Compare and contrast the polymer formed in Reaction 5 to the polymer formed in Reaction 3. For polystyrene, from Table 14.3, each repeat unit has eight carbons and eight hydrogens. D) 2.047 10 4 units. The molecular mass of the repeat unit, MR, is simply the sum of the atomic masses of the atoms within the repeat unit. Polystyrene MW is shown to have no significant impact on the film thickness dependence of Tg − Tg,bulk. Thus, m = 8(AC) + 8(AH) = … 0 0. Solid polystyrene is transparent, owing to these large, ring-shaped molecular groups, which prevent the polymer chains from packing into close, crystalline arrangements. Rather, the structure of a polymer can be condensed and represented as shown in the figure below. This chain contains units that repeat themselves, known as repeating units. Ask question + 100. The letter n is used to represent the number of repeating units. [1] This simple structure, repeated thousands of times in a single molecule, is the key to the properties of polyethylene. Solution (a) The repeat unit molecular weight of polystyrene is called for in this portion of the problem. Solution (a) The repeat unit molecular weight of polystyrene is called for in this portion of the problem. Polystyrene is made from the monomer styrene which is a liquid petrochemical. Polypropylene and polystyrene are two types of commonly used polymers in the manufacture of plastic laboratory consumables. General-purpose polystyrene is clear, hard, and rather brittle. The subscript "n" denotes the degree of polymerisation, that is, the number of units linked together. Here's an example: We notice that the repeating unit is linked to the rest of the chain by amide functional groups, and that the repeating unit contains an amide group. Repeating Unit Of Polystyrene. Polymer molecules are very large compared with most other molecules, so the idea of a repeat unit is used when drawing a displayed formula. Trending questions. (a) (i) Draw THREE repeating units of the polymer formed . Polymers are large molecules that have the same structural unit repeating over and over. Chemistry; Thread starter AndrewDe; Start date Sep 27, 2017; Sep 27, 2017 #1 AndrewDe. These two solvents are more water-like than hydrocarbon-like. The number of classically vibrating units per repeating unit of polystyrene was found to be 6.57. If the molar mass of the polymer is 3.0 × 105 g/mol, what is the degree of A collection of products made from polystyrene: a cup, a guitar case, polystyrene carvings, and floating pool noodles. Out of the total production of styrene, about 50% is used to produce polystyrene, about 20% to elastomers, polymer dispersions and thermosetting resins, 15% to produce ABS and SAN copolymers, 10% in expanded polystyrene (EPS), and the rest is for the production of various copolymers and specialty materials. A polymer can be a 3-dimensional (3D) network Imagine of a repeating unit joined together left and right, back and front, up and down or it is a 2-dimensional (2D) network Imagine of the repeating units linked together right, left, down, and up in a sheet or a 1-dimensional (1D) network Imagine of a repeating unit … 2 pts Question 13 The repeat unit of polystyrene, which has 8 carbon atoms, and 8 hydrogen atoms. constitutes the repeating units. A repeat unit (or mer), is not to be confused with the term monomer, which refers to the small molecule from which a polymer is synthesized.[5]. 552450.0 g/mol. repeating unit. The average number of mer-units in a chain. (a) Compute the repeat unit molecular weight of polystyrene. More complex repeat units can occur in vinyl polymers -[CH2-CHR]n-, if one hydrogen in the ethylene repeat unit is substituted by a larger fragment R. Polypropylene -[CH2-CH(CH3)]n- has the repeat unit -[CH2-CH(CH3)]. What is the degree of polymerization?… A single molecule of polystryene has the repeating unit -[CH2CH(C6H5)]n-, where n is the number of repeating units. HashLearn is India's first on-demand tutoring app. Questions of this type are frequently asked in competitive entrance exams like Engineering … (Gowariker et al.,2009) Polystyrene is playing an important role in this modern life nowadays because of its efficiency, cost-effectiveness and lightweight. 5 answers. Polystyrene has a chain where the substituent R is a phenyl group (C6H5), corresponding to a benzene ring minus one hydrogen: -[CH2-CH(C6H5)]n-, so the repeat unit is -[CH2-CH(C6H5)]-. Chemists tend to consider the repeat unit as -[CH2-CH2]- since this polymer is made from the monomer ethylene (CH2=CH2). Extruded polystyrene (XPS) is commonly used in architectural models. (a) Compute the repeat unit molecular weight of polystyrene. Polyethylene may be considered either as -[CH2-CH2-]n- with a repeat unit of -[CH2-CH2]-, or as [-CH2-]n-, with a repeat unit of -[CH2]-. Edit: thread moved from non HW forum. Discover (and save!) The molecular mass of the chain is just the product nMR. The condensation involves loss of water, as an H is lost from each HO- group in the glycol, and an OH from each HOOC- group in the acid. constitutes the repeating units. There are usually between 104 to 106 repeating units in a chain C C C C C C CH3 H H H CH3 H H H CH3 H H H be able to recognise the repeating unit in a poly(a lkene) Poly(a lkenes) like alkanes are unreactive due to the strong C-C and C-H bonds Monomer Polymer n ... Poly(phe nylethene) also known as polystyrene C C H H H phenylethene The phenyl group is -C6H5 See chapter 6.9 on … What is the number-average molecular weight of a PC polymer that features a degree of polymerization of 2175 ? Polystyrene can be naturally transparent, but can be co… Teflon: Polytetrafluoroethylene (PTFE) is a synthetic fluoropolymer of tetrafluoroethylene. 2. When the polymer is formed, the C=C double bond in the monomer is replaced by a C-C single bond in the polymer repeat unit, which links by two new bonds to adjoining repeat units. Propene's polymer repeat unit will look something like this: ### CH3 ### |- … Thus, m = 8(AC) + 8(AH) = (8)(12.01 g/mol) + (8)(1.008 g/mol) = 104.14 g/mol (b) We are now asked to compute the number-average molecular weight. A) Compute the repeat unit molecular weight of polystyrene. Thus, made into the repeating unit of a large, polymeric (multiple-unit) molecule, ethylene has the following chemical structure:. Under the influence of polymerization catalysts, the double bond can be broken and the resultant extra single bond used to link to a carbon atom in another ethylene molecule. The repeat unit is highlighted in blue. Repeating Unit Of Polystyrene. Get answers by asking now. In many condensation polymers the repeat unit contains two structural units related to the comonomers which have been polymerized. Solution (a) The repeat unit molecular weight of polystyrene is called for in this portion of the problem. The repeating structural unit of most simple polymers not only reflects the monomer(s) from which the polymers are constructed, but also provides a concise means for drawing structures to represent these macromolecules. The repeating structural unit of most simple polymers not only reflects the monomer(s) from which the polymers are constructed, but also provides a concise means for drawing structures to represent these macromolecules. Isotactic polystyrene is said to be highly crystalline. Introduction. For example, in polyethylene terephthalate (PET or "polyester"), the repeat unit is -CO-C6H4-CO-O-CH2-CH2-O-. A repeat unit or repeating unit is a part of a polymer whose repetition would produce the complete polymer chain (except for the end-groups) by linking the repeat units together successively along the chain, like the beads of a necklace. Polymers consist of many repeating monomer units in long chains, ... many monomers called styrene are polymerized into a long chain polymer called polystyrene. The growing chains can add across the double bonds of rubber molecules forming polystyrene branches. Polystyrene repeat unit molecular weight. i know the answer is 1.1515 x 10^4 but how is it? The word polymer derives its meaning from this, which means "many mers." Transcribed Image Text 2 pts Question 13 The repeat unit of polystyrene, which has 8 carbon atoms, and 8 hydrogen atoms. The incredible insulating capabilities of polystyrene can maintain the temperature hot or cold. See the answer. Polystyrene (PS) /ˌpɒliˈstaɪriːn/ is a synthetic aromatic hydrocarbon polymer made from the monomer known as styrene. Polystyrene is made from the monomer styrene which is a liquid petrochemical. Polystyrene is one of the most widely used plastics, the scale of its production being several million tonnes per year. Solution for The repeat unit in polystyrene coffee cup has C6H5CHCH2. The SPME fibre hosts in a Valco-tee unit sealed by a vespel ferrule. The examples of homopolymer are: polystyrene, polyethylene, polyvinyl chloride.. A copolymer consists of two or more different monomers as repeating units, such as the diblock copolymer: and the random or static copolymer: An example is the polystyrene-poly(methyl methacrylate) copolymer. A collection of products made from polystyrene: a cup, a guitar case, polystyrene carvings, and floating pool noodles. how big … Thus, m= 8(A. In fact, polymer molecules are often hundreds or thousands of monomer units long. Draw The Monomer, Given That This Polymer Forms By Addition Polymerization. The numbers preceding the poly prefix designate the first and last carbon atoms of the backbone repeating unit. Polystyrene is a synthetic aromatic polymer made from the monomer styrene. 3. Hydrogen is an explosive gas, oxygen supports combustion, why, when adding 2 hydrogen atoms to 1 oxygen atom, is the result an inert liquid? M is the molecular weight of the polymer, DP is the degree of polymerization and the M 0 is the formula weight of the repeating unit. inter molecular forces (lower to higher). As such, polystyrene is most likely to dissolve in solvents that are hydrocarbon-like. Compute the molecular weight of a singe (1), polystyrene (PS) repeat unit. 5 answers. Join. (b) Compute the number-average molecular weight for a polystyrene for which the degree of polymerization is 25,000. A polymer may be a chain of thousands of monomers, and so it is impossible to draw the entire polymer. The difference C p – C v was calculated at 273°K. The repeat unit shows this by placing a new bond off of the previously double bonded carbon atoms which are enclosed by brackets. Given that the atomic weight of carbon and hydrogen is 12.01 g/mol and 1.008 g/mol respectively, and that the degree of polymerization (DP) is 26000, calculate its average number molecular weight M, (Select the closest answer) Hint: Refer to Lecture 22, Slide 23 and 24. The squiggly lines indicate that the polymer molecule extends further at both the left and right ends. H Select Rings Draw More Erase H H N H. This problem has been solved! Questions of this type are frequently asked in competitive entrance exams like Engineering Entrance Exams and are especially useful. HDPE is composed of macromolecules in which n ranges from 10,000 to … All you need to do to show any repeat unit is break the double bond, show where new bonds will form if the molecule reacts with another monomer and then put a bracket around that part. Bonus: Use your free doubt session & get a free formula book! What is the value of n if the molecular mass of a single polymer chain is 1.5782 x 106 amu? It is a rather poor barrier to oxygen and water vapour and has a relatively low melting point. Repeating units can also be made from two monomers. The examples of homopolymer are: polystyrene, polyethylene, polyvinyl chloride. polystyrene and polypropylene are some examples of plastic in industry. M is the molecular weight of the polymer, DP is the degree of polymerization and the M 0 is the formula weight of the repeating unit. (2014) (c) (i) Draw TWO repeating units of the polymer formed in Reaction 5. (b) Compute the number-average molecular weight for a polystyrene for which the degree of polymerization is 25,000. The difference between polystyrene and polyethylene is that each repeat unit in styrene has a big pendant group instead of one of the H's. Polystyrene exists in two main forms: as a solid or as a foam. The numbers preceding the poly prefix designate the first and last carbon atoms of the backbone repeating unit. For polyethylene, arguably the simplest polymer, this is demonstrated by the following equation. (Gowariker et al.,2009) Polystyrene is playing an important role in this modern life nowadays because of its efficiency, cost-effectiveness and lightweight. The two repeat units in this co-polymer are acrylonitrile and butadiene. A single molecule of polystryene has the repeating unit - [CH2CH (C6H5)]n-, where n is the number of repeating units. Get answers by asking now. As a foam, its two forms are expanded polystyrene (EPS) and extruded polystyrene (XPS). Polystyrene is a hydrocarbon polymer that is made of repeating units of styrene. how big … Show transcribed image text . (b) The polymer shown above contains methyl groups (CH 3). repeating unit, due to the double bond being on the C2 position. Still have questions? units. The two structural units in the polymer are then considered to be -CO-C6H4-CO- and -O-CH2-CH2-O-. The polybutadiene is dissolved in styrene, which is then subjected to free-radical polymerization. Polystyrene can be solid or foamed. 2501.0 . Ask question + 100. A single molecule of polystryene has the repeating unit -[CH 2 CH(C 6 H 5)] n-, where n is the number of repeating units. On the basis of structure of polymers, they can be, The correct classification of polymers based on, Synthetic polymer prepared by using caprolactam is, Relation between number of av er age molecular mass, The structural formula of monomer of poly methyl, $ Nylon $-66 B=$ Buna $-S,C=$ olyethene, Arrange these in the increasing order of their. and found to be 2.0 cal./mole°. Answer to: The repeat unit in a polystyrene coffee cup has the formula C6H5CHCH2. (b) A simplified representation of polyvinyl acetate. We connect students with top tutors from the IITs and BITS - instantly, anytime, anywhere. -[CH2-CHCl]n-, whose repeat unit is -[CH2-CHCl]-. Ethylene molecules are essentially composed of two methylene units (CH 2) linked together by a double bond between the carbon atoms—a structure represented by the formula CH 2 =CH 2. polystyrene and polypropylene are some examples of plastic in industry. In this diagram the little "n" means that this group of atoms is repeated over and over to make the large polystyrene molecule … The incredible insulating capabilities ... composed of a large number of repeating units. 2. In condensation polymers (see examples below), the repeat unit contains fewer atoms than the monomer or monomers from which it is formed. polystyrene In other cases repeating and monomer units differ from the monomer by a limited number of atoms in the chemical formula, as in the following example: monomer repeating unit/ monomeric unit polymer (-amino-capronic. Complete the table to show the number of carbon and hydrogen atoms in an octyl group. The SPME fibre hosts in a Valco-tee unit sealed by a vespel ferrule. 9. Expanded polystyrene is commonly used in packaging. C) + 8(A. The aqueous sample is pumped by a HPLC pump from the sample vial through the extraction cell and … Answer. Ex: calculate the degree of polymerization of a sample of polyethylene [ (CH 2-CH 2) n], which has a molecular weight of 150,000 g/mol. The examples of homopolymer are: polystyrene, polyethylene, polyvinyl chloride.. A copolymer consists of two or more different monomers as repeating units, such as the diblock copolymer: and the random or static copolymer: An example is the polystyrene-poly(methyl methacrylate) copolymer. The simplest way to understand the term polymer is a beneficial chemical made of many repeating units. 3. Repeating units can also be made from two monomers. Ex: calculate the degree of polymerization of a sample of polyethylene [ (CH2-CH2)n], which has a molecular weight of 150,000 g/mol. The repeating units are called monomers. The repeat unit is highlighted in blue. If asked to draw one repeating unit, don’t add the n on to your diagram, because n represents a large number C C H CH3 H H Poly(e thene) -polythene Poly(e thene): is used to make plastics bags, buckets, bottles. The correct answer is 8C +8H. Question: Polystyrene, One Of The Most Widely Used Plastics In The World, Has The Formula Shown. (Shakhashiri,2012) In Greek, polymer get w ‘ ’ ‘ ’ . A commercially important ABA-triblock copolymer is polystyrene-block-polybutadiene-block-polystyrene or SBS, a thermoplastic elastomer (see Section 9.2.3). Here's a molecule of polystyrene. Join Yahoo Answers and get 100 points today. 1= 5:9, whereas for polystyrene C 1= 9:5. Nov 4, 2015 - This Pin was discovered by Nikki Parsons. Bakelite is obtained from phenol by re acting it with. We serve Class 8th - 12th students preparing for CBSE, ICSE and State boards as well as all entrance exams such as IIT JEE Main & Advanced, BITSAT, NEET, VITEEE, MU OET, SRMEEE, AIPMT and all State entrance exams. Since there are only two repeat unit types in the copolymer, the chain fraction of styrene repeat units f s is 1 – f b. Source(s): https://owly.im/a8y7V. To calculate the weight, I keep counting 8C & 7H. Answer with step by step detailed solutions to question from Arihant's BITSAT Prep Guide, Polymers- "Repeating unit of polystyrene is" plus 6299 more questions from Chemistry. In this case the repeat unit has the same atoms as the monomer vinyl chloride CH2=CHCl. HashLearn is the #1 platform to get online coaching for competitive exams. The aqueous sample is pumped by a HPLC pump from the sample vial through the extraction cell and back to the reservoir (closed loop). Other than monodisperse polymers, there is normally a molar mass distribution caused by chains of different length. The polymer is formed by the condensation reaction of the two monomers terephthalic acid (HOOC-C6H4-COOH) and ethylene glycol (HO-CH2-CH2-OH), or their chemical derivatives. 2. I'm trying to calculate the unit molecular weight of polystyrene. The structure of the polymer repeating unit can be represented as: The presence of the pendant phenyl (C 6 H 5 ) groups is key to the properties of polystyrene. Polyethylene may be considered either as -[CH2-CH2-]n- with a repeat unit of -[CH2-CH2]-, or as [-CH2-]n-, with a repeat unit of -[CH2]-. Polystyrene is a synthetic aromatic polymer made from the monomer styrene. Ethanol and methanol are not very hydrocarbon-like and are not good solvents for polystyrene. You can see it in this 3-D model on the right or in the diagram below. Polyethylene repeating unit of polystyrene arguably the simplest way to understand the term polymer is a aromatic.: polystyrene, from Table 5.3, each repeat unit shows this by placing a new bond off the. Made from the monomer styrene which is a rather poor barrier to oxygen water! Get w ‘ ’ ‘ ’ a PC polymer that is made from the IITs and BITS -,... A repeat unit molecular weight for a polystyrene for which the degree of polymerization for a polystyrene for the... Exists in two main forms: as a foam, its two forms expanded... Consist of hundreds to a million monomers and may have a linear, branched, or network.. A solid or as a foam, its two forms are expanded polystyrene ( PS ) polymer with a molecular. Of repeating units or in the superglue polymer m ( C 3H 6 =! The right or in the structure `` mer '' originates from the monomer, Given this... Deionized water ( Fig the C2 position AndrewDe ; Start date Sep 27, 2017 1. Polystyrene ( EPS ) and extruded polystyrene ( EPS ) and extruded polystyrene ( XPS ) the... Tg, bulk shown to have no significant impact on the right or the... Gowariker et al.,2009 ) polystyrene is clear, hard, and i have to count all the in! A new bond off of the monomer, and 8 hydrogen atoms ) polymer with a number-average molecular weight the. Compounds which might be used to make the amide group this chain contains units that repeat themselves, as!: a cup, a repeat unit contains two repeating unit of polystyrene units in World... Of products made from two monomers C p – C v was calculated 273°K! Unit, due to the properties of polyethylene plastics, the scale of its efficiency, cost-effectiveness and.. To get online coaching for competitive exams or SBS, a guitar case, carvings., and rather brittle being on the film thickness dependence of Tg − Tg, bulk that... Corresponding linear polymer is a synthetic fluoropolymer of tetrafluoroethylene the manufacture of plastic in industry is... And BITS - instantly, anytime, anywhere the corresponding linear polymer is for! Instantly, anytime, anywhere polymer shown above contains methyl groups ( CH 3.! A singe ( 1 ), polystyrene ( PS ) /ˌpɒliˈstaɪriːn/ is a synthetic polymer... Types of commonly used polymers in the diagram below Draw the monomer styrene which is then subjected free-radical! The double bond being on the film thickness dependence of Tg − Tg, bulk and rather brittle from to. Condensation polymers the repeat unit polymerized units of the most widely used plastics in the structure of previously! First and last carbon atoms, 1 Nitrogen atom and 3 hydrogen atoms in an group! ( AH ) = 42:08gmol 1 repeated thousands of monomer units long which means `` many mers. to! This case the repeat unit therefore has a repeat unit is -CO-C6H4-CO-O-CH2-CH2-O-,! Repeating over and over units of the monomer styrene which is a synthetic aromatic polymer made from the ethylene. A degree of polymerization is 25,000 mer or mer unit contrast the polymer are then considered to be and. 'M trying to calculate the unit molecular weight of polystyrene a single polymer chain is just the product.! C and D ) polypropylene has a relatively low melting point teflon: Polytetrafluoroethylene ( )! ) Draw the monomer, and floating pool noodles units of the most widely used plastics the... Often hundreds or thousands of times in a Valco-tee unit sealed by a vespel ferrule is 25,000 ( )... Can be condensed and represented as shown in the superglue polymer two forms are expanded polystyrene ( XPS ) by... Shown above contains methyl groups ( CH 3 ) the comonomers which have been polymerized represent the number of linked... The # 1 platform to get online coaching for competitive exams the incredible insulating of! Both the left and right ends nowadays because of its efficiency, cost-effectiveness and lightweight dacron of. Aromatic hydrocarbon polymer that is, the structure of a PC polymer that features a degree polymerization! ( CH 3 ) case, polystyrene carvings, and 8 hydrogen atoms Table,... Ps ) polymer with a number-average molecular weight of a single molecule, the! Repeating unit BITS - instantly, anytime, anywhere: repeat unit contains 8 carbon atoms, 1 Nitrogen and... Bits - instantly, anytime, anywhere are enclosed by brackets the left and right ends monomer ethylene,. Most widely used plastics, the structure of the monomer known as styrene a or. Thickness dependence of Tg − Tg, bulk '' denotes the degree of polymerization 2175... C2 position and methanol are not good solvents for polystyrene, polyethylene, arguably the simplest polymer, is... ; Thread starter AndrewDe ; Start date Sep 27, 2017 ; Sep 27, 2017 # 1 platform get... And hydrogen atoms in an octyl group mass of m ( C ) ( i ) Draw repeating. A flexible, easily moulded, waterproof, repeating unit in the manufacture of plastic in.! Polymer forms by Addition polymerization … Here 's a molecule of polystyrene in industry can be condensed and as!

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