精華區beta NTU-Exam 關於我們 聯絡資訊
課程名稱︰高分子化學 課程性質︰選修 課程教師︰謝國煌 開課學院:工學院 開課系所︰化工系 考試日期(年月日)︰2012.1.12 考試時限(分鐘):120分鐘 是否需發放獎勵金:是 (如未明確表示,則不予發放) 試題 : 1.Describe the reaction mechanism of the ring-opening polymerization without ring cleavage. (10%) 2.Describe the synthesis the Poly(ethylene oxide) by anionic catalyst(X+Y- or M+OR-). (10%) 3.How to synthesis the Poly(tetramethylene oxide) from tetrahydrofuran in the presence of Lewis acid (PF5) with the traces of water. (10%) 4.How to synthesis the Poly(vinyl alcohol) by side-group modification process. (5%) 5.Describe four advantages for polymer-supported organic reactions. (10%) 6.If you have a photoresist reaction as —(CH2-CH)n— —(CH2-CH)n— 丨 丨 /\ hν /\ ∣O∣ ---→ ∣O∣ \/ –CO \/ 丨 丨 O OH 丨 C==0 丨 H How do you use this resist as a positive and as a a negative resist, respectively. (15%) 7.Why can we use the following simple equation to represent the condensation polymerization (5%) O O ╱╲╱╲ + ╱╲╱╲ → ╱╲╱╲∥ ╱ ╲╱╲╱ + H20↗ COOH OH C 8.Describe the rate equation of polyesterification and express its conversion _ (P) and degree of polymerization (DP). (10%) 9.Describe the propagation reactions of monomer M1 and M2 and derive the equation for the relationship between the molar fraction ratio in the polymer (f1/f2) and that in reaction mixture (F1/F2). (10%) 10.(a) Describe the reaction mechanism of anionic polymerization and its characteristic during the reaction and final product. (5%) (b) Derive the rate of polymerization to give the [M] as the function of time t. (5%) (c) Derive the average kinetic chain length (ν) and average degree of _ polymerization (DP). (5%) -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 140.112.250.114