以缩聚-热脱水两步反应合成出侧链含有羟基的可溶性聚酰亚胺,选取具有温敏特性的N-异丙烯丙烯酰胺(NIPAAm)高分子化合物并基于原子转移自由基聚合技术,经接枝聚合完成对聚酰亚胺的功能化改性,制备出具有潜在应用价值的聚酰亚胺基温敏聚合物。红外光谱和核磁氢谱测试结果表明成功合成出聚酰亚胺基温敏聚合物;热重和溶解性测试结果显示,温敏功能化改性过程不会对聚合物的热性能和溶解性产生影响;紫外-可见分光光度计的测试结果表明本研究所得温敏材料的相转变温度为33℃。
A soluble polyimide(PI) with hydroxyl group in the side chain was synthesized through two steps of polycondensation and thermal dehydration.Then the NIPAAm polymer compound with temperature-sensitive characteristics was selected and based on atom transfer radical polymerization technology,the functionalization of polyimide was completed by graft polymerization.A PI-based temperature sensitive material with potential application value was prepared.FT-IR and 1H-NMR test results shown successful synthesis of PI-based thermo-sensitive polymer.TGA and solubility test results shown that the temperature-sensitive functional modification process did not affect the thermal properties and solubility of the polymer.The results of UV-Vis spectrophotometry shown that the obtained material had phase transition temperature of 33℃.
[1] Liu Z,Wang W,Xie R,et al.Stimuli-responsive smart gating membranes[J].Chemical Society Reviews,2015,45(3):460-475.
[2] 谢锐,刘壮,巨晓洁,等.智能高分子开关膜的制备方法研究进展[J].中国工程科学,2014,16(12):94-101.
[3] Cooperstein M A,Canavan H E.Biological cell detachment from poly(N-isopropyl acrylamide) and its applications[J].Langmuir,2010,26(11):7695-7707.
[4] Roth P J,Davis T P,Lowe A B.Comparison between the LCST and UCST transitions of double thermoresponsive diblock copolymers:insights into the behavior of POEGMA in alcohols[J].Macromolecules,2012,45(7):3221-3230.
[5] Liu Qi,Zhu Zhiyong,Yang Xiaomin,et al.Temperature-sensitive porous membrane production through radiation co-grafting of NIPAAm on/in PVDF porous membrane[J].Radiation Physics and Chemistry,2007,76:707-713.
[6] 谢锐.温度响应与分子识别型智能核孔膜的制备与性能研究[D].成都:四川大学,2007.
[7] 谢锐,褚良银,陈文梅,等.聚N-异丙基丙烯酰胺接枝核孔膜微观结构及温敏响应特性[J].化工学报,2005,56(11):2212-221.
[8] Li P F,Ju X J,Chu L Y,et al.Thermo-responsive membranes with cross-linked poly(N-isopropyl-acrylamide) hydrogels inside porous substrates[J].Chemical Engineering and Technology,2006,29(11):1333-1339.
[9] 丁孟贤.聚酰亚胺-化学、结构与性能的关系及材料[M].北京:科学出版社,2006,1-75.
[10] 杨婷婷,周竹欣,张艺,等.光致发光聚酰亚胺研究进展[J].高分子学报,2017(3):411-428.
[11] 张永明.聚酰亚胺薄膜的渗透性研究及应用进展[J].中国胶黏剂,2016(5):51-55.
[12] 李越,高会元,李媛媛,等.聚酰亚胺基CO2分离膜的研究进展[J].化工新型材料,2015,43(9):27-29.
[13] 卢汝烽,胡继文,张干伟,等.一种以聚酰亚胺为主链的分子刷合成与表征[J].高分子学报,2012(3):239-249.
[14] Chen B K,Chiu T M,Tsay S Y.Synthesis and characterization of polyimide/silica hybrid nanocomposites[J].Journal of Applied Polymer Science,2004,94(1):382-393.
[15] Sun J,Hu J,Liu G,et al.Efficient synthesis of well-defined amphiphilic cylindrical brushes polymer with high grafting density:interfacial & ldquo;click & rdquo;chemistry approach[J].Journal of Polymer Science Part A Polymer Chemistry,2011,49(5):1282-1288.
[16] 虞鑫海.含酚羟基聚酰亚胺薄膜的研制[J].绝缘材料,2009,42(5):1-10.
[17] 汪称意,赵辉鹏,李光,等.一种高可溶、高光学透明含氟聚酰亚胺的合成与表征[J].化学学报,2010,68(5):449-452.
基金资助
山西省科技厅重大专项计划项目(MJH2016-04);山西省科技厅青年项目基金(201601D202032)
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