a. What molecular features make a polymer flexible? Explain how cross-linking affects the properties of polymer? b. In copolymers made of ethylene and PMMA, the melting point and degree of crystallinity decrease as the percentage of PMMA increases. Suggest an explanation for this observation.

Q: 1. How would you explain to a young science student how to decide whether a given compound might be…

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

Q: High-density polyethylene (HDPE) is an important grade of polyethylene. Draw a three repeat unit…

A: Repeat unit of polymer is known as monomer. Polymer is a macromolecule made up of large number of…

Q: Explain the differences between addition polymerization and condensation polymerization?

A: The differences between addition polymerization and condensation polymerization have to be explained…

Q: Calculate the % atom economy for the addition polymerization of polyethylene, where 280.5 g of…

A:

Q: Differentiate addition polymerization and condensation polymerization. 3.

A: Actually the Polymerization is a process of combining a large number of small molecules to form a…

Q: What role can craze formation play in toughening of an amorphous polymer? What role can crazing play…

A: A craze is a deformation zone in amorphous polymer and can be divided into precraze and proper…

Q: 1. What is the mass per repeating unit of PET (in g / mol)? Explain why this number should be used…

A:

Q: Discuss the polymerization process of bone cement.

A: Bone cement is used as artificial joint . Bone cement is actually polymethyl methacrylate (PMMA).

Q: Analysis of a sample of polyacrylonitrile shows that there are six lengths of chains, with the…

A: The Weight average molecular weight of a polymer is given by--------------- Mw = ∑i = 0∞Ni Mi2∑i =…

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: In the addition polymerization of acrylonitrile, a very small amount of butyl lithium causes a…

A: Polymers are the long repeating units of monomers, which is formed by the polymerization process. In…

Q: High‑density polyethylene (HDPE) is an important grade of polyethylene. Draw a three repeat unit…

A: Given: High‑density polyethylene (HDPE) is an important grade of polyethylene.

Q: LDPE or low-density polyethylene is one type of polymer resin that produces a plastic that is…

A: We have been asked to state the reason for the differences between LDPE and HDPE. The differences…

Q: In case of a bifunctional monomer, two reactive groups attach side by side to each other forming…

A: By taking a bifunctional monomer as an example and writing its polymerization step will indicate…

Q: High density polyethylene (HDPE) and low density (LDPE) both are made from the same monomer (-CH-…

A: LDPE is a clear or transparent polyethylene with exceptional chemical resistance, elasticity, and…

Q: Poly(butylene terephthalate) is a hydrophobic plastic material widely used in automotive ignition…

A: Polymerization: Conversion of monomers join in a chain to form polymers process is called…

Q: Which of the following options correctly shows the structure of the two-monomer repeating unit of…

A: Two different monomer units each having double bonds undergo polymerization to form a copolymer.

Q: Nylon 10,10 is an extremely tough, strong polymer used to make reinforcing rods for concrete. Draw a…

A: Nylon 10,10 formed by the condensation of sebacic acid and 1,10- decanediamine with elimination of…

Q: 1.Discuss the differences between condensation and addition polymerization.

A: Polymerization is the process in which the small molecules (monomers) are combined to form large…

Q: Shown below is the ε-caprolactone monomer where the biopolymer polycaprolactone (PCL) is synthesized…

A:

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

A:

Q: Many monomers can form long polymer chains, but some can also form bonds with neighbouring polymer…

A:

Q: When Cationic polymerization occurs ? & how it occurs ?

A: When many monomers' units combine to form a long chain, it is called polymerization. This long chain…

Q: . What requirement should be provided to achieve high yield and high molecular weight of polymer by…

A: 1.Condensation polymers are formed by the removal of water (or alcohols) during polymerization and…

Q: The following applications are associated with a particular polymer or plastic. Name the polymer,…

A: Polymers are very large molecules made of many repeating subunits called monomers.

Q: Poly(ethylene glycol) (PEG) and poly(vinyl chloride) (PVC) are examples of polymers, large organic…

A: Polymers are made up by repeating singe or two units. They are made up of monomers. A single unit…

Q: High-density polyethylene (HDPE) fibre is used as liners for surgical gloves. Although the liner has…

A:

Q: Poly(ethylene glycol) (PEG) and poly(vinyl chloride) (PVC) are examples of polymers, large organic…

A: The structure of poly(ethylene glycol) PEG and poly(vinyl chloride) PVC are as follows:

Q: Monomers to be Polymers Polymorphism polymerization allotropy O tempering

A: The answer to the following question is -

Q: in the process of condensation polymerization, monomers are involved which funtional groups of:  A)…

A: Given options, A) Different kind B) All group C) Same kind D) None of the above

Q: 7. Here is the structural formula for Dacron, a synthetic fiber. to-CH,-CH; -o a) Draw a structural…

A: Polymer is the repeating unit of monomer.  poly means many and mer means unit.  For multipart…

Q: 3. Another type of Nylon can be made from 1,4-butanediamine and sebacoyl chloride: | CI - C(CH2);C…

A: Dear student I have given answer to your question in the image format. .

Q: Co-polymers" consist of two different monomers ("A" and "B") joined in an alternating fashion…

A: Block polymers contains different monomer units which are grouped as distinct units, which may give…

Q: Determine which one would have higher crystallinity, and also briefly explain why. (a) Block…

A: Polymers are macromolecules that are formed by the reaction of smaller molecules like monomers.  A…

Q: 1. Define monomer and polymer?Monomer = _______________________________________________________…

A: Polymer and monomer are interrelated to each other and are defined as shown below:

Q: A monomer is also considered to be a coextruded polymer True False

A: Coextrusion is a process in which two or more polymer materials are extruded together to produce…

Q: (a)Is this a condensation or addition polymer? Explain how you know. (b) Provide the IUPAC name of…

A: In this question, first we will Identify the type of polymer then provide the IUPAC name of the…

Q: Describe how the stereoisomerism affect the degree of crystallinity of a semicrystalline polymer…

A: The degree of crystallinity of polymer depends on many factors. It depends on molecular structure –…

Q: What monomer would you use to form the following polymer?

A: Polytetrafluoro ethylene can be prepared by the monomer tetrafluoroethylene

Q: Glass transition temperature is important for fabrication of polymers. Justify this statement. Draw…

A: The temperature at which the glassy state of polymer changes to viscous or rubbery state called as…

Q: What structural features must a monomer possess to undergo addition polymerization and condensation…

A: Monomer:- It is the smaller repeating unit in polymers.

Q: Low-density polyethylene (LDPE) has a higher degree of chain branching than highdensity polyethylene…

A: Unbranched polyethylene packs more efficiently into compact structure which have more mass per unit…