| PC/EAA共混体系在加工过程中的反应 |
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| 引用本文： | 廖永霞,赵印,杨伟,冯建民,杨鸣波. PC/EAA共混体系在加工过程中的反应[J]. 高分子学报, 2005, 19(6): 907-913 |
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| 作者姓名： | 廖永霞 赵印 杨伟 冯建民 杨鸣波 |
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| 作者单位： | 四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,成都,610065;四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,成都,610065;四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,成都,610065;四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,成都,610065;四川大学高分子科学与工程学院,高分子材料工程国家重点实验室,成都,610065 |
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| 基金项目： | 教育部博士基金（基金号20020610006）资助项目 |
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| 摘 要： | 采用差示扫描量热法(DSC)和核磁共振氢谱法(1H-NMR)研究了不同聚碳酸酯(PC)/乙烯-丙烯酸共聚物(EAA)共混体系在加工过程中的大分子反应,考察了有机金属催化剂二丁基锡DBTO)含量和反应时间对体系的影响.采用哈克(Haake)转矩流变仪的混合器作反应釜,索氏抽提器分离产物.结果表明,PC和EAA在加工中反应剧烈,在共混体系的界面原位形成接枝或交联的PC-EAA共聚物,随催化剂用量增大、反应时间延长易生成共交联的PC-EAA共聚物.但混合时间过长,体系的断链反应会加剧,生成产物不稳定.
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| 关 键 词： | PC/EAA共混体系 反应加工 1H-NMR DSC |
| 收稿时间： | 2004-09-17 |
| 修稿时间： | 2004-11-15 |
STUDY ON THE REACTION OF PC AND EAA DURING PROCESSING |
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| LIAO Yongxia,ZHAO Yin,YANG Wei,FENG Jianmin,YANG Mingbo. STUDY ON THE REACTION OF PC AND EAA DURING PROCESSING[J]. Acta Polymerica Sinica, 2005, 19(6): 907-913 |
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| Authors: | LIAO Yongxia ZHAO Yin YANG Wei FENG Jianmin YANG Mingbo |
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| Affiliation: | College of Polymer Materials Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065 |
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| Abstract: | The transesterification in polycarbonate/poly(ethylene-co-acrylic acid)(PC/EAA) melting blend system with the presence of dibutyltin oxide(DBTO) catalyst was investigated during compounding by means of a Haake torque rheometer.The characteristics of the products were evaluated by Soxhlet extraction and DSC,~1H-NMR analyses.The results showed that the transesterification reaction did take place in the PC/EAA blend system,grafted or co-crosslinked copolymers PC-EAA were in situ generated at the interface of the blends during processing;the extent of exchange reaction,the structure and stability of reaction products depended upon the mixing time and the content of the catalyst.With more catalyst and reaction time,more co-crosslinked copolymers were obtained. |
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| Keywords: | PC/EAA blend Exchange reaction 1^ H-NMR Co-crosslinked copolymer |
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