交联型聚芳醚砜两亲嵌段聚合物的合成与表征  

Synthesis and characterization of crosslinked poly(arylene ether sulfone)amphiphilic block copolymers

作　　者：何瑞[1] 周建魁[1] 严石静[2] 李立忠[1] 申凤善[3] 李香丹[1] 

机构地区：[1]中南民族大学化学与材料科学学院,湖北武汉430074 [2]华南理工大学材料科学与工程学院,广东广州510641 [3]延边大学理学院,吉林延吉133002

出　　处：《分子科学学报》2015年第3期182-188,共7页Journal of Molecular Science

基　　金：国家自然科学基金资助项目(51243005)

摘　　要：首先分别合成了主链上含有查尔酮结构的疏水段和侧链上含有叔胺的亲水段,然后通过疏水段与亲水段的末端缩合反应合成了一系列光敏性聚芳醚砜两亲嵌段聚合物,其结构和热性能分别通过1 H NMR,FT-IR,UV-Vis光谱,TGA和万能力学试验机等进行表征测试.该两亲性嵌段聚合物具有良好的溶解性、热稳性、力学性能和光敏性,在紫外光谱322nm处有最大吸收峰,在常温下经紫外光照射,分子链之间发生[2+2]环加成反应,聚合物分子之间形成交联结构,最大交联度可达到64%.Firstly,we synthesized hydrophobic and hydrophilic oligomers containing chalcone structure on the main chain and tertiary amine groups on the side chain,respectively.Then,a series of photocrosslinkable poly（arylene ether sulfone）amphiphilic block copolymers were synthesized by condensation reaction between the end groups.The structures and properties of polymers were characterized by 1H-NMR,FT-IR,UV-Vis,TGA and mechanical properties test.The block copolymers showed excellent solubility,good thermal stability,robust mechanical strength and excellent photosensitiveness.They also exhibited a maximum absorption peak at 322 nm in UV-Vis spectra.The[2＋2]cyclization reaction occurred between the molecular chains to form a crosslinked structure under UV-irradiation at room temperature,and the maximum crosslinking degree could reach up to 64%.

关 键 词：叔胺 嵌段 聚芳醚砜 交联结构 

分 类 号：O630[理学—高分子化学]