What effect does the presence of an α-Methyl group in a polymer chain have on the glass transition temperature? Explain with examples ?

Q: During our lectures on polymeric materials, I used polyethylene as an example because of its very…

A: Polymerization of ethylene and formation of polyethylene takes place as follows:

Q: Novolac is the linear polymer which on heating with formaldehyde forms cross-linked bakelite. Write…

A: To give the structure of monomers and the polymer novolac.

Q: The type and placement of functional groups such as hydroxyl group (i.e., -OH group or double bonds…

A: The question asks about the impact of the type and placement of functional groups such as hydroxyl…

Q: Nylon was designed to be a synthetic silk. The average molar mass of a batch of nylon 6,6 is 19000…

A: Given: a. Average molar mass=19000 g/mol b. Alanine, glycine and serine To find: a. Number of…

Q: When the polytetrafluoroethylene polymer is exposed to high temperature for a long time, Write the…

A: Depolymerization :-         It is the process to converting a polymer into monomer or mixture of…

Q: Which are the monomers of the following polymer, NH-C-OCH,CH,O]- -[C-NH- `CH, А. H.C -NH,…

A:

Q: Palmitoleic acid, a fatty acid with various pharmaceutical applications, is mainly obtained from…

A: Fatty acids are the building blocks of the fat in our bodies. Saturated fatty acids are straight…

Q: In copolymers made of ethylene and vinyl acetate monomers, melting point and degree of crystallinity…

A: Since when we have more number of ethylene molecules in the polymer the polymer gets mostly straight…

Q: Draw the structures of the monomers of the following polymers :(i) Polythene(ii) PVC(iii) Teflon

A: Monomer: A molecule is considered as monomer when this molecule bonds with another identical…

Q: A long polymer chain, such as polyethylene ( -CH2CH2- )n, can potentially exist in solution as a…

A:

Q: Intramolecular forces of attraction are often important in holding large molecules together. For…

A: Given, The intermolecular force of attraction at labeled site A is due to presence of the isopropyl…

Q: 1. What are biodegradable polymers and their classification ( include its functions and importance)?

A:

Q: Why is Wohler’s work with urea considered an important milestone in the development of organic…

A: Wohler's work involves synthesis of urea by heating ammonium cyanate. Previously it was believed…

Q: 1. Write the structure of the polymer, tetrafluoroethylene (up to 10 carbons in length).

A: Hey, since there are multiple questions posted, we will answer first question. If you want any…

Q: Choose the term that best describes the relationship between the two structures. Fig. 1 H Ill H Fig.…

A:

Q: Isobutylene and isoprene copolymerize to give “butyl rubber.” Draw the structure of the repeating…

A: Polymers are materials made of long, repeating chains of molecules. The materials have unique…

Q: Draw the structures of the monomers of the following polymers :(i) Teflon(ii) Polyethene

A: Teflon It is polytetrafluoroethylene, or PTFE. The molecular structure of Teflon is based on a chain…

Q: In the addition polymer, Polyethylene, how many monomer units are in the polyethylene polymer that…

A:

Q: The density difference between low and high-density polyethylene is a result of the difference…

A:

Q: Polystyrene is not biodegradable. Referring to it's chemical structure (chemical bonds/functional…

A: Polystyrene is polymer made up styrene  as monomer, polystyrene can be either hard or foamed being…

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

A: a.

Q: Which feature of ethylene (C2H4) causes it to be reactive in addition polymerization?…

A: Molecular formula = C2H4 In ethylene there is double bond between carbon atoms due to which it is…

Q: What is the structural difference between HDP and LDP? How does the structure account for different…

A: LDP is composed of highly branched chain molecules.  LDP has low density and low melting point due…

Q: Adenine and guanine are the members of a class of molecules known as purines; they have two rings in…

A: The structures of Adenine and Guanine are given as follows:

Q: The composition in mole fraction units of the strands of a double-helical DNA is [A]= 0.30 and [G] =…

A: Given  data DNA is [A]= 0.30 [G] = 0.24.

Q: (d) A sample of head-to-tail polypropylene was found to have an average molar mass of 33,000.…

A: We have to predict the average degree of polymerization.

Q: what kind of a substance is  Hexa-peri-hexabenzocoronene? element, hetergenous mixture, homogenous…

A: Hexa-peri-hexabenzocoronene is an aromatic hydrocarbon in which coronene is at centere and six…

Q: .5(a) Which is the first conductive polymer? How intrinsic conductive polymer can be prepared. (b)…

A: a.1st conductive polymer is polyacetelene or polyethyne. Polymers that conduct electricity is called…

Q: -X-X-X- Linear Homopolymer Branched Homopolymer Cross linked Homopolymer -X-Y-X- Linear Copolymer…

A:

Q: Two samples of C60 are stirred in H2O and benzene respectively. How would you determine the size of…

A: The solution is as follows:

Q: what is polymer ? write classification of polymer ? write application of each type of polymer

A: A polymer is a large molecule composed of repeating subunits called monomers. These subunits are…