Polymers may be composed of thousands of monomers. Draw two repeat units of the polymer (dimer) formed in this reaction. Assume there are hydrogen atoms on the two ends of the dimer. Ignore inorganic byproducts.
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- In a non-acid catalyzed step-growth polymerization between A-A and B-B monomers, the A groups are titratable by aqueous base (1 N) and [A-A] [B-B) = 6 mol.kg-1. a) What is the DP if it takes 100 mL of base to neutralize the reaction mixture at 700 minutes of reaction time (assuming the initial total weight 500 g)?...Explain with more details, how you can prepare poly(propylene oxide) by using Anionic and Cationic polymerizations?A synthetic polymer was produced via addition polymerization to a degree of polymerization of 925 and an average molecular weight of 40,700 g/mol. Of those listed below, which is most likely that polymer? Explain and support
- Shown below is the ε-caprolactone monomer where the biopolymer polycaprolactone (PCL) is synthesized from. (a) What is the functionality of the monomer? (b) What is polymerization mechanism to produce PCL? (c) Draw the repeating unit of the homopolymer given that the functional group is located at the terminal of the hydrocarbon chainDiscuss either the polymer is produce by condensation or addition polymerization Polymer : Nylon *Do not do in the point formQuestion 1 a. Briefly describe what is thermoplastic, thermoset plastic and elastomer. Give examples to clarify your answers. b. Briefly discuss the effect of thermodynamic on polymerization. c. What are important factors influencing the properties of polymers? Question 2 a. Discuss the suitable initiator to start an addition polymerization. b. Define what is auto-acceleration, what causes this effect and how to minimize this effect. c. Briefly discuss emulsion and suspension polymerization techniques. Question 3 a. Discuss the differences between condensation and addition polymerization. b. What requirement should be provided to achieve high yield and high molecular weight of polymer by condensation reaction? c. What is interfacial polymerization? Question 4 a. Describe biopolymer and synthetic polymer. Give examples to support your answer b. Briefly discuss the classification of polymers. c. Why polymers are widely used in our daily life? Question 5 a. Describe TWO (2) important…
- 1. What requirement should be provided to achieve high yield and high molecular weight of polymer by condensation reaction? 2. What is interfacial polymerization 3. Describe biopolymer and synthetic polymer. Give examples to support your answer 4. Briefly discuss the classification of polymers. 5. Why polymers are widely used in our daily life?Linear polyethylene and poly tetrafluoroethylene (PTFE, or Teflon) have similar covalent bond strengths and similar chain rotation flexibility. Both form flexible, semi-crystalline polymers, but polyethylene is easily melt processed whilt PTFE cannot be made to flow. What is the likely reason for the difference? (TYPE IT).a copolymer is made up of 40.01% polystyrene 20.38% acrylonyl and 31.51% polybutadiene a) Calculate the Molar Fraction b) the Degree of Polymerization if there is a weight of 320, 000 gr of copolymer c) carry out the polymerization reaction d) What is the name of this polymer and e) Mention some applications of some monomer
- 1.Discuss the differences between condensation and addition polymerization.2.What requirement should be provided to achieve high yield and high molecular weight of polymer by condensation reaction?3.What is interfacial polymerization?4.Describe biopolymer and synthetic polymer. Give examples to support your answer5.Briefly discuss the classification of polymers.6.Why polymers are widely used in our daily life?Polymers can be cross-linked using a variety of reactions that create connections between different parts of the same polymer chain. Consider the repeat unit of the polystyrene derivative shown below.The homopolymer formed from this monomer has a low ceiling temperature (meaning it readily reverts to its monomers) and is unstable. It can be cross-linked by adding the terephthaloyl chloride (shown below) and AlCl3. Modify the structures provided to draw the result of the reaction of one repeat unit of the polymer with one unit of this cross-linking compound. Do not include lone pairs.The thermotropic liquid crystal polymer Xydar® can be made be made by condensing terephthalic acid (HOOC-φ- COOH), p,p'-dihydroxybiphenyl (HO-φ-φ-OH) and p-hydroxybenzoic acid (HO-φ-COOH).A. What is meant by a thermotropic liquid crystal polymer?B. List three different repeating structures of polymers that can be made from these monomers. Note: φ is shorthand for a phenyl or benzene ring (C6H4, in this case)