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[1]郭庆中,刘闯,陆慧,等.六氟双酚A环状聚酯二聚体的开环聚合与表征[J].武汉工程大学学报,2011,(07):41-44.
　GUO Qingzhong,LIU Chuang,LU Hui,et al.Characterization and ringopening polymerization of cyclic aryl ester dimer containing hexafluoroisopropylidene unit[J].Journal of Wuhan Institute of Technology,2011,(07):41-44.
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六氟双酚A环状聚酯二聚体的开环聚合与表征(/HTML)
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《武汉工程大学学报》[ISSN:1674-2869/CN:42-1779/TQ]

卷:
期数:
2011年07期
页码:
41-44
栏目:
材料科学与工程
出版日期:
2011-08-30

文章信息/Info

Title:
Characterization and ringopening polymerization
of cyclic aryl ester dimer containing hexafluoroisopropylidene unit
文章编号:
16742869(2011)07004104
作者:
郭庆中; 刘闯; 陆慧; 胡双锋
武汉工程大学材料科学与工程学院，湖北 武汉 430074
Author(s):
GUO Qingzhong;  LIU Chuang;  LU Hui;  HU Shuangfeng
School of Materials Science and Engineering, Wuhan Institute of Technology, Wuhan 430074, China
关键词:
芳香环状聚酯; MALDITOF质谱; 开环聚合
Keywords:
cyclic aryl ester dimer;  MALDITOFMS;  ringopening polymerization
分类号:
O631
DOI:
-
文献标志码:
AAdoi:10.3969/j.issn.16742869.2011.07.012
摘要:
采用界面缩聚反应，“假高稀”条件下，以六氟双酚A和邻苯二甲酰氯为单体，十六烷基三甲基溴化铵为相转移催化剂，合成了一种新型结构的芳香环状聚酯二聚体，利用MALDITOFMS, NMR, FTIR, DSC等手段对其结构进行了表征.环状聚酯二聚体在阴离子引发剂苯甲酸钠的存在下,成功进行了熔融开环聚合,得到了线性高分子量的聚酯，其Tg为162.4 ℃，5%热失重温度为384℃.对环状聚酯熔融开环聚合过程的流变行为进行监测，结果表明，在开环聚合的引发阶段，熔融体的粘度低于10 Pa·S且增长缓慢，超过引发阶段，粘度快速增长.
Abstract:
?Under pseudohigh dilution conditions, a kind of cyclic aryl ester dimer has been synthesized from phthaloyl dichloride and 4,4’(hexafluoroisopropylidene) diphenol via interfacial polycondensation reaction. Detailed structural characterization of the cyclic dimer confirmed the cyclic nature by a combination of MALDITOFMS, IR and 1H NMR analyses. The cyclic dimer readily undergoes anionic ringopening polymerization in the melt by using sodium benzoate as the initiator, producing linear, high molecular weight polyester with Tg of 162.4 ℃and excellent thermal stability. Moreover, the isothermal chemorheology of the ringopening polymerization of cyclic dimer is also investigated. The results show that the shear viscosity of the molten reactive mixture increases slowly and is lower than 10 Pa·S at a constant shear rate of 0.05 S1 in the initial stage of ringopening polymerization and the viscosity increases dramatically after the initial stage.

参考文献/References:

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［8］郭庆中，肖颖，刘闯. MALDITOF质谱表征芳香环状聚酮低聚物及其组分分布 ［J］. 武汉工程大学学报, 2011,33(5):57.
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相似文献/References:

[1]郭庆中,肖颖,刘闯.MALDI-TOF质谱表征芳香环状聚酮低聚物及其组分分布[J].武汉工程大学学报,2011,(05):5.[doi:10.3969/j.issn.16742869.2011.05.002]
　GUO Qingzhong,XIAO Ying,LIU Chuang.Characterization of cyclic(arylene ketone) oligomers by Matrixassisted Laser Desorption Ionization Timeofflight Mass Spectrometry[J].Journal of Wuhan Institute of Technology,2011,(07):5.[doi:10.3969/j.issn.16742869.2011.05.002]

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