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| 异丁烯与对甲基苯乙烯共聚合反应竞聚率的测定 | |
| 引用本文： | 任苹,伍一波,郭文莉,李树新,王洪亮,肖菲,刘克龙. 异丁烯与对甲基苯乙烯共聚合反应竞聚率的测定[J]. 弹性体, 2012, 22(1): 25-28,34 |
| 作者姓名： | 任苹 伍一波 郭文莉 李树新 王洪亮 肖菲 刘克龙 |
| 作者单位： | 1. 北京化工大学材料科学与工程学院,北京100029;北京石油化工学院材料科学与工程系,北京102617 2. 北京石油化工学院材料科学与工程系,北京,102617 3. 辽宁石油化工大学,辽宁抚顺,113001 |
| 基金项目： | 北京市自然科学基金项目（北京市教育委员会科技计划重点项目）（KZ200910017001） |
| 摘 要： | 在-80℃下,以2-氯-2,4,4-三甲基戊烷(TMPCl)/四氯化钛(TiCl4)/2,6-二叔丁基吡啶(DtBP)为引发体系,氯甲烷(CH3Cl)/环己烷(Chx)(体积比为50/50)为溶剂采用正离子聚合技术研究异丁烯与对甲基苯乙烯的共聚行为。研究异丁烯与对甲基苯乙烯不同投料比以及不同转化率下的共聚组成,利用Kelen-Tudos与Yezreielv-Brokhina-Roskin法计算单体的竞聚率;用1 H-NMR方法测定异丁烯和对甲基苯乙烯共聚物组成。结果表明,在低转化率(小于15%)的条件下,异丁烯与对甲基苯乙烯的竞聚率分别为r1=0.248,r2=1.190。 |
| 关 键 词： | 异丁烯 对甲基苯乙烯 正离子聚合 竞聚率 |
Determination of reactivity ratio of isobutylene and p-methylstyrene |
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| REN Ping , WU Yi-bo , GUO Wen-li , LI Shu-xin , WANG Hong-liang , XIAO Fei , LIU Ke-long. Determination of reactivity ratio of isobutylene and p-methylstyrene[J]. China Elastomerics, 2012, 22(1): 25-28,34 | |
| Authors: | REN Ping WU Yi-bo GUO Wen-li LI Shu-xin WANG Hong-liang XIAO Fei LIU Ke-long |
| Affiliation: | 1,2(1.College of Materials Science and Engineering,Beijing University of Chemical Technology,Beijing 100029,China;2.Department of Materials Science and Engineering,Beijing Institute of Petrochemical Technology,Beijing 102617,China;3.Liaoning University of Petrochemical Technology,Fushun 113001,China) |
| Abstract: | The block copolymerization of isobutylene with p-methylstyrene was studied in 2-chloro-2,4,4-trimethylpentane（TMPCl）/ titanium tetrachloride（TiCl4）/ 2,6-di-tert-butylpyridine（DtBP）as initiating system in methyl chloride（CH3Cl）/cyclohexane（Chx）（50/50 v/v）solvent mixture at-80 ℃ by cationic polymerization.The compositions of the copolymers were analyzed by 1H-NMR.The reactivity ratios of isobutyene and p-methylstyrene were calculated by Kelen-Tudos（K-T）methods and Yezreielv-Brokhina-Roskin calculative method（YBR）,respectively.The experimental results showed that at the low changing rate（15%）,the values of reactivity ratios for isobutylene and p-methylstyrene are r1=0.248 and r2 =1.190 respectively. |
| Keywords: | isobutylene p-methylstyrene cationic polymerization ratio |
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