苯乙烯-丙烯酸氯代酯共聚竞聚率的测定  

DETERMINATION OF REACTIVE RATIOS OF COPOLYNMERTZATION FOR STYRENE AND CHLOROALKYL ACRYLATES

作　　者：胡凤朝[1] 陈家华[1] 

机构地区：[1]同济大学化学系,上海200092

出　　处：《高分子材料科学与工程》1993年第1期38-41,共4页Polymer Materials Science & Engineering

摘　　要：丙烯酸氯代酯CH_2=CHCDO(CH_2)_nCl(n=2、3、4、6)和(CH_2=CHCOOCH_2 Cl用AIBN引发可以和苯乙烯发生自由基共聚合反应。在本工作中,控制转化率小于10％,用YBR方法求初值,YM二元线性回归法系统测定了60℃时各单体对的竞聚率。它们的一个共同特点是T_1<1和T_2<1,表明共聚属于无规共聚。接着用Q-e方程估算了丙烯酸氯代酯的Q和e值,0<Q<1,e>0。本文讨论了烷基链长对丙烯酸氯代酯单体的活性以及Q和e值的影响。A senses of chloroalkyl acrylatesCH2 = CHCOO (CH2)n (n = 2, 3,4,6 ) and CH2 = CHCOOCH2-Cl could be radical copolymerizcd with styrene (M1) at 60℃ in the presence of AIBN as initiastor. In this paper, controling the low conversion(<10%).the reactivity ratios of several pairs of monomers were measured at 60℃ and calculated by the YBR and TM methods. From the results r1 andr2.it could be seen that the copolymerizations between styrene and these acrylates were random. Q<1 and r>show that the acrylate monomers were of resonance effects.but oess than that of stvrene. Their inductive effects were electron attractive.

关 键 词：共聚 竞聚率 苯乙烯 丙烯酸氯代酯 

分 类 号：O631.5[理学—高分子化学]