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J4  2011, Vol. 45 Issue (10): 1862-1867    DOI: 10.3785/j.issn.1008-973X.2011.10.027
化学与生物工程、环境工程     
TMI和苯乙烯溶液共聚合的竞聚率
袁来深, 张才亮, 顾雪萍, 冯连芳
浙江大学 化学工程与生物工程学系 化学工程联合国家重点实验室,浙江 杭州310027
Monomer reactivity ratios of TMI and styrene solution
copolymerization
YUAN Lai-shen, ZHANG Cai-liang, GU Xue-ping, FENG Lian-fang
State Key Laboratory of Chemical Engineering, Department of Chemical and Biological Engineering,
Zhejiang University, Hangzhou 310027, China
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摘要:

以甲苯为溶剂和偶氮二异丁腈(AIBN)为引发剂,研究3异丙烯基-α,α′-二甲基苄基-异氰酸酯(TMI)和苯乙烯(St)溶液共聚合的竞聚率和共聚产物(PS-co-TMI)的相对分子质量及分子质量分布.通过对共聚物产物的傅里叶红外(FTIR)分析,证实了在低转化率(<6%)下成功合成了PS-co-TMI.引入带荧光性官能团的9(甲氨基-甲基)蒽(MAMA),通过紫外(UV)确定PS-co-TMI的组成;采用Kelen-Tudos正序和逆序法、YBR法和多元线性回归最小二乘法确定TMI(1)和St(2)的竞聚率为:r1=0.27、r2=0.91.凝胶滲透色谱(GPC)分析表明:TMI与St单体的加料量比增加,PS-co-TMI的相对分子质量和分子质量分布均减小.

Abstract:

In the presence of toluene as solvent and azobisisobutyronitrile (AIBN) as initiator, the monomer reactivity ratios of 3-isopropenyl-α,α′-dimethylbenzyl isocyanate (TMI) and styrene (St), and molecular weight and molecular weight distribution of assynthesized copolymer (PS-co-TMI) were analyzed. Fourier infrared (FTIR) analysis of as-synthesized copolymer showed that PS-co-TMI was successfully synthesized under the overall conversions less than 6%. The copolymer composition of PS-co-TMI was determined by ultraviolet (UV) measurement with introducing 9-(methylaminomethyl) anthracene (MAMA) bearing fluorescence groups into PS-co-TMI. Using the methods of positive Kelen-Tudos, reversed KelenTudos, YBR and multiple linear regression least square, the reactivity ratios of TMI(1) and St(2) were obtained as r1=0.27, r2=0.91. Gel permeation chromatography (GPC) analysis showed that the molecular weight and molecular weight distribution of PS-co-TMI decreased with the increase of TMI/St feeding ratio.

出版日期: 2011-10-01
:  O 632.1  
基金资助:

化学工程联合国家重点实验室资助项目(SKL-ChE-08D03);浙江省自然科学基金资助项目(Y4090319).

通讯作者: 冯连芳,男,教授.     E-mail: fenglf@zju.edu.cn
作者简介: 袁来深(1985—),男,硕士生,从事高分子材料合成与加工的研究.E-mail: inzaghi6@126.com
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引用本文:

袁来深, 张才亮, 顾雪萍, 冯连芳. TMI和苯乙烯溶液共聚合的竞聚率[J]. J4, 2011, 45(10): 1862-1867.

YUAN Lai-shen, ZHANG Cai-liang, GU Xue-ping, FENG Lian-fang. Monomer reactivity ratios of TMI and styrene solution
copolymerization. J4, 2011, 45(10): 1862-1867.

链接本文:

https://www.zjujournals.com/eng/CN/10.3785/j.issn.1008-973X.2011.10.027        https://www.zjujournals.com/eng/CN/Y2011/V45/I10/1862

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