(b) Which of the following monomers can be polymerized by step-growth and which ones by chain-...
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)
Question 3 1 pts Which of the following monomers can undergo polymerization either by chain-growth or step-growth? NH2 G COOH o COOH COOH o F and HO OH CI
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.
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?...
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
1-15 Which of the following monomers can conceivably form isotactic polymers? HH (a) CH2-C-C-CH, CH2 - CH2 (b) CH, Czo NH CH, - CH, CH, (c) CH3 - C=CH2 H H - C=CH, (d) CH - сн. (e) HOCHCH,OH + HO-C- 0-C-OH ? =0
question 4 please! b. BF3 +H20 d. NaNaphthalene e. H2S04 f. n-CaHgLi Consider the following monomers. Indicate which type or types of addition polymerization (free radical, anionic, or cationic) could be effectively used to polymerize each and briefly explain your answer 4. a. CH2-CHPh b. CH2-C(CH3)2 c. CH2 CHO d. CH2-C(CH3)(COOCH3) e. CH2-CH2 f. CH2-CH(OCH,CHs) 8. CH-CH(CN)
please answer all the questions ! Question 16 Consider the Carvacrol molecule below and determine which class of terpenes it belongs in. OH monoterpene tetraterpene diterpene triterpene sesquiterpene Question 19 Predict the products when triacontyl hexadecanoate, a major component of beeswax, is treated with aqueous NaOH. CHỊCH, CHỊCH,CH, NaOH, Q. CHICHICOH CHACH.COM CHACH. ONA HACH MACONI CH3(CH2)14 COH + CH3(CH2)28CH2ONa CH3(CH2)14COH + CH3(CH2)28CH2OH I 11 CH3(CH2)14CNa + CH3(CH2)28CH2OH CH3(CH2)14CONa + CH3(CH2)28CH2OH IV II O O O O III IV none...
Which of the following amino acids has a side chain with an ionizable proton and can exist in four different forms, depending on the pH of the solution? H I. Proine CO IV. Alanine CH-d-cool Η'ΦΗ NH3 N H H II. Serie HO-CH2-c-coo NH V. Glycine H-d-cooo NH HN H IIL Histidine -CH2-Ć-COOB H NH 11 С СО СО IV v Submit Request Answer
Shown below is the synthesis of two NLO-phore containing monomers which can be polymerized to obtain a second-order NLO-active polymer. Identify the structures of the monomers and the resulting polymer. 2 eq NO2 PtS2 1 C (CF3CO20 NO2 CsF I DMSO H2 DMIF NEt3 / THF NEt DMF K2CO3 / MeOH Monomer-1 CH2CO2H HN(CH2CH2OH)2 CH3SO2CI K2CO3 / DMF ?? NEt3 CH2Cl2 CHO CO2Me K2CO3 / DMF CO2Me Ac2O / AcOH 1. NaOH Monomer-2 125°C 2. HCI