Poly(lactic acid) (PLA) has received much recent attention because the lactic acid monomer [CH3CH(OH)COOH] from which it is made can be obtained from carbohydrates rather than petroleum. This makes PLA a more “environmentally friendly” polyester. (A more in-depth discussion of green polymer synthesis is presented in Chapter 30.) Draw the structure of PLA.

Q: d. n CIC(CH2)6CCI + n HO(CH2)2OH ->

A: The polymerization reaction taking place is given as,

Q: Calculate the degree of polymerization of a sample of polyethylene [ (CH2-CH2)n], which has a…

A: Given  Molecular weight of polymer = 150000 gram/mole degree of polymerization = ?

Q: Polyethylene terephthalate (PET) is used to make synthetic fibers, such as Dacron, thin films, such…

A: Polyethylene terephthalate is an ester. It is basically a thermoplastic, polyester resin used in 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: 2. In your own words, explain the difference between step-reaction polymerization and chain-reaction…

A: Polymerization is the chemical process of combining monomers to form a polymer, a large…

Q: • Each of the following monomers or pairs of monomers can undergo condensation polymerization…

A:

Q: Write the chemical reaction showing the formation of the following polymers from initial reactants:…

A: Hey, since there are multiple sub part questions are posted, we will answer first three questions.…

Q: Polyethylene glycol, or Carbowax®, is widely used as a binder, thickening agent, and packaging…

A: Given compound,    Polyethylene glycol  (poly(ethylene oxide))

Q: A thermosetting material called polyester is made when a carboxylic acid reacts with dialcohol.…

A:

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

A: Concept introduction: Polymers are the compound having high molecular mass and are made up of…

Q: Which functional groups react to form nylons? Polyesters?

A:

Q: How do Ethene monomers react with each other? Give an equation of polymer chain?

A: The smallest alkene ethylene or ethene, C2H4, which consists of two carbon atoms that are each…

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

A:

Q: Polychloroprene, commonly known as neoprene, is widely used in wetsuits and in rubber parts that…

A: Polymers are the molecules of high molecular masses formed by the combination of a repeating…

Q: (a) Draw the structure of polystyrene, which is formed by polymerizing the monomer styrene,…

A: Monomer- the reactant molecule in polymerization reaction called as monomers.These are low molecular…

Q: which of these polymers occurs naturally?  A) Cellulose and starch  B) Proteins and PVC C) Starch…

A: Naturally occurring polymers are present in nature and can be obtained from it in its natural form.

Q: a) What is the difference between high- and low-density classifications of polyethylene?

A: A) For the preparation of polythene, the monomer used is ethene . Monomers is the smallest repeating…

Q: dacron is the brand name for the polymer that is made from ethane-1,2-diol and…

A: Given that, dacron is the brand name for the polymer that is made from ethane-1,2-diol and…

Q: 1. Draw the structure of the polymer formed by the following monomer. H H H-C =C- C = N

A: A question based on polymer chemistry, which is to be accomplished.

Q: Calculate the approximate molar mass of a polyethene sample, the average chain length of which is 50…

A: To calculate the approximate molar mass of a polyethylene sample with an average chain length of…

Q: Which of these polymers is a polyurethane? A) B) HN -NH n C) D ) H3C CH3 N'

A:

Q: Based on molecular forces what type of polymer is neoprene?

A: The word polymer is made of two parts- 'poly' means many and 'mer' means unit. Polymers are large…

Q: Polymers may be composed of thousands of monomers. Draw three repeat units (trimer) of the polymer…

A: Given:Monomers are composed to form PolymersWe have to draw three repeat units (trimer) of the…

Q: Polyethylene (PE), polyvinylchloride (PVC), polypropylene (PP), polystyrene, an nylon are examples…

A: A polymer is a chemical compound with molecules bonded together in long, repeating chains. When a…

Q: How do Substituted polyethylenes make up an entire class of polymers? Explain with an example?

A: Polymers can be described as macromolecules of very high molecular mass 103-107u where the each…

Q: Polyethylene terephthalate(PET) is a versatile polyester (shown below). to What is the class of the…

A:

Q: Charles Goodyear discovered that if sulfur is added to rubber and the mixture is heated, the rubber…

A: When rubber is heated with sulfur, the polymer chains gets cross linked by sulfur bridges. These…

Q: The type of polymer formed by sequential addition of an alkene is a(n) A addition polymer. B…

A: The question is asking about the type of polymer that is formed by the sequential addition of an…

Q: What are synthetic polymers?

A: Polymers are materials composed of small repeating units having a small molecular mass known as…