Which of the following provides an absolute measure of the molecular weight of polymers: (a) viscometry, (b) cryometry, (c) osmometry, (d) light-scattering photometry, (e) GCP

Q: (i) Define the criteria for condensation polymerisation to occur. (ii) Give one example of…

A: Condensation polymer is a kind of polymer formed by condensation reaction, where molecules join…

Q: Illustrate, with chemical formulae, the influence of the size of the side groups of a polymer…

A: Polymer is a large molecule which is made up of the small repeating units. These molecules have the…

Q: #5: Estimate the full contour length of a low-density polyethylene (LDPE) (CAS# 9002-88-4) chain…

A: average degree of polymerization is a weighted mean of the degrees of polymerization of polymer…

Q: Fill in the blanks in the table for the following material: OH epoxy CH3 Repeat unit molecular…

A: Polymer is any class of natural or synthetic substances composed of very large molecules , called…

Q: Calculate the number-average molecular weight (Mn) and the weight-average molecular weight (Mw) for…

A: Mn= ∑1iNiMi∑1iNi Mw =∑1iNiMi2∑1iNiMi

Q: Poisson’s ratio for polyethene is 0.45. What change in volume takes place when a cube of polyethene…

A: Consider, When the stress is applied the length in the transverse direction decreases, but length…

Q: 1. Poly (tetrafluoroethylene) (Teflon) will have a higher glass transition temperature, Tg than Poly…

A: A question about glass transition temperature, which is to be accomplished.

Q: Crystalline polyethylene has a density of 1000 kg m-3 and amorphous polyethylene a density of 865 kg…

A: A polymer sample's crystallinity can be represented as whether in a mass fraction or a volume…

Q: From the literature identify the glass transition and melting temperature of the following polymers…

A: Glass transition temperature :- The temperature range at which a polymer starts to become like a…

Q: Strain 0.4 0.7 1.2 2.5 Stress (Pa) 360000 830000 1200000 2500000 What is the average molecular…

A: Average molecular weight of chain lengthMw = N1M12+N2M22+N3M32+. . . .N1M1 + N1M2 + N3M3 + ....

Q: Select the single best answer.   Choose the definition that best describes a polymer:   a acidic…

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Q: State whether it is possible to determine whether one polymer is more likely to crystallize than the…

A: A linear polymer is a macromolecule in which each repeating unit is linked only to two others and…

Q: 2. For the monomers below, state whether they will undergo chain growth or step growth…

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Q: Which of the following polymers would not be capable of conducting electricity? Assume appropriate…

A: The conductive polymers are also known as intrinsically conducting polymers. These are organic…

Q: what is the diffrence between fibres and elastomers?

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Q: Write out the two propagation steps for the addition of HCI to propene and calculate AH° for each…

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Q: (a) Which of the following polymers (i) – (vi) exist in different stereochemical forms? Draw polymer…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

Q: The following table lists the glass transition temperatures, Tg, of several polymers. Discuss the…

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Q: Outline some methods for obtaining ultra-high orientation in polymers (e.g. Kevlar).

A: Роlymers аre mаteriаls соmроsed оf lоng mоleсulаr сhаins thаt аre well-ассeрted fоr а wide vаriety…

Q: What is the degree of polymerization for 1050 gr of average molecular weight of a polypropylene…

A: In the given question, there is a mistake. The monomeric unit of polypropylene is propylene, C3 H 6…

Q: One of the polymers that exhibit tacticity is polypropylene. Show the structure of atactic,…

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Q: what is floor temperature in thermodynamics of polymerization with the explaination of floor…

A: Floor temperature is the critical temperature in which the temperature reaches a maximum or minimum…

Q: Describe the mechanism by which stereoregular polyolefins are formed in heterogeneous coordination…

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Q: Assume the energy of hydrogen bonds per base pair to be 5.86 kJ-mol-1. Given two complementary…

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Q: QII: Distinguish between the following reactive intermediates in chain- growth polymerizations: 1.…

A: 1. Answer - Radicals - Radical Polymerization is a polymerizing approach by which successive…

Q: Explain why there is a difference in glass transition temperature between the following pairs of…

A: Hi, According to our community guidelines, we can only answer one subparts ,since they are not…

Q: A crosslinked copolymer consists of 59 wt% ethylene (C2H4) repeat units and 41 wt% propylene (C3H6)…

A: Since the weight % is given and we need mole % to find the fraction. Assuming we have 100 gm of…

Q: Calculate the restoring force when the ends of a one-dimensional polyethene chain of molar mass 85…

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Q: What is the fraction of monomers (p) that have been used in a stepwise polymerisation reaction if…

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Q: In a theoretical study of protein-like polymers, the phase diagram shown was obtained. It shows…

A: a.

Q: Write the significance of poly dispersity index; also calculate the number-average molecular weight,…

A: There some small molecules while some are very long molecules, having a molecular weight in…

Q: 1. Briefly describe what is thermoplastic, thermoset plastic and elastomer. Give examples to clarify…

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Q: The properties of polymer materials are not only influenced by the nature of the matrix polymers but…

A: Polymers are the materials which consists repetitive units of a compound. The repetitive unit is…

Q: Electrostatic charges can also be produced on the surfaces of polymeric materials due to: *…

A: 1)low surface conductivity of most polymeric materials 2)ionizes antistatic agent in the presence of…

Q: What effect does the presence of an α-Methyl group in a polymer chain have on the glass transition…

A: The effect of alpha Methyl group on the glass transition temperature (Tg) in a polymer chain is as…

Q: Is Nyloon 6,6 Synthesis a condensation polymerazation?

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Q: (a) Compute the repeat unit molecular weight of polybutene unit chemical formula =( C8H16) (b)…

A: Using formula of degree of polymer. n= Mn/Mo

Q: 3. Discuss the possibility of cyclization in the polymerization of a. H;N-(CH)-co,H b. HO-(CH)-OH +…

A: Some surprising results were determined within the part transfer of catalyzed (PTC) (two-part,…

Q: .Suggest how to make syndiotactic/isotactic polystyrene on the one hand and on the other hand how to…

A: Step-I Isotactic polymers have the side groups attached on one side of the backbone chain whereas…

Q: . Discuss the possibility of cyclization in the polymerization of a. H2N-(CH2)m-CO2H b. HO-(CH2)2-OH…

A: Solution Some surprising results were determined within the part transfer of catalyzed (PTC) (two…

Q: Plot the tensile strength of the polymers in table 16-2 as a function of the number of aromatic…

A: CONCEPT: Polymers are the macromolecules made up of small repeating units called monomers. Tensile…

Q: -3 (d) Crystalline polyethylene has a density of 1000 kg m* and amorphous polyethylene a density of…

A: Density of crystalline polyethylene                      = 1000 kg m-3 Density of amorphous…

Q: Sketch and label the expected stress-strain curves at room temperature for lightly cross-linked…

A: Here is your answer... Step 1: Find the attachment

Q: What is the instrumentation of Conductometry ?

A: Instrumentation of conductometry is given as follows

Q: 3. Draw the structure of one repeating unit of the addition polymer styrene butadiene rubber. CH₂ CH…

A: #3: Styrene butadiene rubber is an addition polymer of styrene and butadiene.

Q: Explain why the configuration of a polymer of isobutylene is neither isotactic, syndiotactic, nor…

A: Configuration of a polymer of isobutylene: The three possible configurations for polymers formed…