摘要
采用聚乙二醇(PEG)对间苯二甲胺(MXDA)固化的TDE-85环氧树脂体系进行改性,制备了亲水性形状记忆环氧树脂,结合微形貌构筑和热响应方式对树脂表面浸润性进行智能调控.结果表明,PEG的引入有效地增加了TDE-85环氧树脂的亲水性.PEG的最佳含量为20%(质量分数)时,树脂表面的接触角为54°,实现了环氧树脂从原始TDE-85/MXDA固化体系表面的疏水性(接触角为108°)到TDE-85/MXDA/PEG固化体系表面亲水性的转变;改性后树脂的玻璃化转变温度Tg为71℃,形状固定率和回复率分别为96.10%和99.97%,表明得到的树脂具有良好的形状记忆性能.进一步采用模板法在树脂表面构筑了微阵列结构,基于形状记忆效应,通过对表面微阵列形态的控制,实现了环氧树脂表面介于亲水性(接触角为51°)与超亲水性(接触角为0°)间的可逆浸润性智能调控.
A hydrophilie shape memory epoxy resin was prepared by introducing polyethylene glycol（PEG） into the 4,5-epoxy cyclohexane-1,2-2-phthalate glycidyl ester（TDE-85） epoxy/m-phenylenediamine（MXDA） system, meanwhile, its surface wettability could be controlled by changing its pillar structure under external thermal-stimuli. The result shows that the introduction of PEG effectively increases the hydrophilicity of TDE-85 epoxy resin, and the optimal amount of PEG is 20% （mass fraction）. In this condition, the water contact angle is about 54°, indicating the realization of wetting conversion from the original hydrophobic TOE- 85 epoxy resin/MXDA curing system（water contact angle is about 108°） to the hydrophilie TDE-85/MXDA/ PEG system. TheTg of the obtained material is 71℃, and its shape fixed ratio and recovery ratio are 96. 10% and 99.97%, respectively, meaning that the obtained material has a good shape memory property. The micropillars onto the surface by the template method, reversible wetting switching between the hydrophilieity（51 °） and the superhydrophilicity（0~） can be realized based on the shaoe memorv ability.
作者
钱艺豪
张东杰
成中军
康红军
刘宇艳
QIAN Yihao;ZHANG Dongjie;CHENG Zhongjun;KANG Hongjun;LIU Yuyan(Key Laboratory of Critical Materials Technology for New Energy Conversion and Storage,Ministry of Industry and Information Techz~ology,School of Chemistry and Chemical Engineering;Academy of Fundamental and Interdisciplinary Sciences,Harbin Institute of Technology,Harbin 150001,China)
出处
《高等学校化学学报》
SCIE
EI
CAS
CSCD
北大核心
2018年第8期1823-1828,共6页
Chemical Journal of Chinese Universities
基金
国家自然科学基金(批准号:51573035
21674030)资助~~
关键词
环氧树脂
亲水性
微形貌
形状记忆
浸润性调控
聚乙二醇
Epoxy resin
Hydrophilieity
Mierostructure
Shape memory
Reversible wetting control
Polyethylene glycol
