Question 3 1 pts Which of the following monomers can undergo polymerization either by chain-growth or...
(b) Which of the following monomers can be polymerized by step-growth and which ones by chain- growth polymerization? ( mark each) CH3 (iH2N- (CH 2) 6 NH 2 CH3 t) (iii) (iv) CH-CH2
Please explain the following observation: For chain-growth polymerization, the concentration of the monomers follows a slow mono-exponential decrease. For step-growth polymerization, the monomer concentration follows a very rapid bi-exponential decrease.
Which of the following structures are reasonable monomers for addition polymerization? 13. Which of the following structures are reasonable monomers for addition polymerization? CH2OH CI H O OH он H2N Ol H C 2 он (iv) IV (a) i only (b) ii and iv (c) ii, iii, and iv (d) i and iii (e) iii only
I need help answering #23 which then can be used to answer 24,26, and 27 Complete the table with the missing information (2 pts per box). Then use the table to answer the next four questions (questions 24, 25, 26 and 27). (upload your answers) (2pts per box) Monomer 1 Monomer 2 Resulting Polymer Step/Chain Growth Chain Growth Next question UN Step Growth Next question Upload Choose a file Regarding the previous table in question 23, determine if the monomers...
4. Draw segment (can use (-----). type structure of the polymer obtained from each type of the following monomers. In each case, is it the result of a chain growth or a step growth type of polymerization? no answert a. CH=CH2 b. cech ice + IND with to c. ch=H-4H = CH2 CH3 Caneider the nalmer from nropene. In this context, what is meant by the terms a) atactic b)
i) Which of the following is not true about step-growth polymers? Formation of step-growth polymers usually results in the loss of a small molecule. Step-growth polymers are formed by the reaction of bifunctional molecules. Step-growth polymers can be formed by a free radical mechanism. Step-growth polymers are also known as condensation polymers. Step-growth polymers do not reach high molecular weight until the reaction has gone nearly to completion. ii) Which of the following are not termination methods in radical polymerization?...
5. A hypothetical mixture of 10 monomers (AB) undergoes step-growth polymerization The following table presents a possible picture of how reaction might appear. (Note that A and B represent two different functional groups and ab is the product of their reaction with each other) Time Molecular species present DP AB AB AB AB AB AB AB AB AB AB 0 |АВ АВ АВ АВ АВ АВ АВ АВ АВ АВ T1 AbaB AbaB AbaB AB AB AB AB 12 AbabaB...
Polymer Chemistry: 1. (20pt) This question is concerned with a comparison between step and chain polymerization. A. Indicate which of these statements is appropriate to step and which to chain processes: a. High MW obtained initially and continuously. b. High MW at high conversion. 2. a. Monomer concentration decreases rapidly in early stages of reaction. b. Monomer concentration decreases continuously throughout reaction. 3. a. Reaction mixture contains only high polymer, monomer and reactive species. b. Reaction mixture contains a range...
3 Match the following polymer with the common product in which it is used (see intro for help). 1. polystyrene 2. nylon 3. polypropylene 4. low density polyethylene 5. polycarbonate a. Plastic Bags b. Water Pipes c. Cookware d. Egg containers e. Milk cartons 6. polyethylene f. Carpet and Knitted fabrics 7. polyvinylchloride 9. Automobile bumpers 8. polytetrafluoroethylene h. Rope 4. Shown below are monomers for common polymers that get made. Draw two repeating units of the polymer structure for...
Which of the following terms best describes the pair of compounds shown: enantiomers, diastereomers, constitutional isomers, the same compounds, different Compounds, or cis-trans (geometric) isomers? 8. (3 pts) CI MOH OH 9. (3 pts) CHO COOH CHO H H -CH, HYCH.CH CHE H3CH2C- -Η COOH 10. (3 pts) OH HO. CH,OH HO OH HO "CH OH OH