| 五甲基环戊二烯三苄氧基钛/甲基铝氧烷/三异丁基铝催化合成的间规聚苯乙烯的结构与性能 |
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| 引用本文： | 黄启谷,马力,陈立国,林尚安,付志峰,杨万泰. 五甲基环戊二烯三苄氧基钛/甲基铝氧烷/三异丁基铝催化合成的间规聚苯乙烯的结构与性能[J]. 石油化工, 2005, 34(5): 470-473 |
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| 作者姓名： | 黄启谷 马力 陈立国 林尚安 付志峰 杨万泰 |
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| 作者单位： | 1. 北京化工大学,材料科学与工程学院,北京,100029
2. 中山大学,高分子所,广东,广州,510275 |
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| 基金项目： | 北京化工大学青年自然科学基金项目(QN0406) |
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| 摘 要： | 对五甲基环戊二烯三苄氧基钛/甲基铝氧烷/三异丁基铝催化苯乙烯聚合得到的间规聚苯乙烯(sPS)的结构和性能进行了研究。采用13C核磁共振谱、傅里叶变换红外光谱、宽角X射线衍射、差示扫描量热法、热重分析方法对聚合得到的sPS进行表征,研究其微观结构、结晶行为、分子链结构和热性能。实验结果表明,得到的聚苯乙烯为全反式结构的sPS,间规度大于96%,熔点高于271.0℃,结晶度达46.85%,起始失重温度为291.6℃,失重5%的温度高于350.0℃,热稳定性好,灰分含量低。
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| 关 键 词： | 间规聚苯乙烯 结构 表征 性能 茂金属催化剂 三异丁基铝 甲基铝氧烷 |
| 文章编号： | 1000-8144(2005)05-0470-04 |
| 修稿时间： | 2005-01-04 |
Structure and Properties of Syndiotactic Polystyrene Synthesized by p - Pentamethyl - Cyclopentadienyl - Tribenzyloxy - Titanium/Methylaluminoxane/Triisobutylaluminum Catalyst System |
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| HUANG Qigu,Ma Li,Chen Liguo,Lin Shang'an,Fu Zhifeng,Yang Wantai. Structure and Properties of Syndiotactic Polystyrene Synthesized by p - Pentamethyl - Cyclopentadienyl - Tribenzyloxy - Titanium/Methylaluminoxane/Triisobutylaluminum Catalyst System[J]. Petrochemical Technology, 2005, 34(5): 470-473 |
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| Authors: | HUANG Qigu Ma Li Chen Liguo Lin Shang'an Fu Zhifeng Yang Wantai |
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| Abstract: | Structures and properties of syndiotactic polystyrene(sPS)synthesized by p-pentamethyl-cyclopentadienyl-tribenzyloxy-titanium/ methylaluminoxane/triisobutylaluminum(Cp*Ti(OBz)_3/MAO/TIBA)catalyst system were investigated.Micro-structure of sPS was characterized by means of 13C NMR,FTIR and WAXD.The structure was whole trans-configuration and syndiotacticity of sPS was more than 96%.Crystalline properties were characterized by means of WAXD and DSC and crystallinity of sPS was up to 46.85%.sPS showed excellent thermal property determined by DSC and TGA.Its melting point was more than 271.0℃,initial mass loss temperature was up to 291.6℃,and temperature of 5% mass loss was more than 350.0℃.Ash content of burnt sPS was low. |
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| Keywords: | Syndiotactic polystyrene structure characterization properties metallocene triisobutylaluminum methylaluminoxane |
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