木质素基聚离子液体膜的制备与应用  

Preparation and Application of Lignin-based Poly(ionic liquid)Membranes

作　　者：杨思卿 许神剑 唐卿涵 缪涵 杨溪[2] 林绍梁[1] YANG Siqing;XU Shenjian;TANG Qinhan;MIAO Han;YANG Xi;LIN Shaoliang(Shanghai Key Laboratory of Advanced Polymeric Materials,School of Materials Science and Engineering,East China University of Science and Technology,Shanghai 200237,China;the Ninth People’s Hospital,School of Medicine,Shanghai JiaoTong University,Shanghai 200011,China)

机构地区：[1]华东理工大学材料科学与工程学院,上海市先进聚合物材料重点实验室,上海200237 [2]上海交通大学医学院附属第九人民医院,上海200011

出　　处：《高等学校化学学报》2024年第10期130-139,共10页Chemical Journal of Chinese Universities

基　　金：国家自然科学基金(批准号:52325308,52203258,52073092);上海市浦江计划项目(批准号:21PJ1402100)资助.

摘　　要：通过原子转移自由基聚合(ATRP)反应制备了不同接枝密度的木质素星形接枝聚丙烯酸共聚物(Ligning-PAA),将Lignin-g-PAA与咪唑鎓聚离子液体(PCMVImTFSI)通过原位静电络合,制备出具有梯度孔结构的木质素基聚离子液体膜(Lignin-PILM).探究了Lignin-g-PAA接枝密度对薄膜的热稳定性、表面形貌和孔径分布的影响,其中,由中度接枝密度的Lignin2-g-PAA_(9)构建的Lignin-PILM存在纳米梯度孔结构,并具有良好的热稳定性.探究了Lignin-g-PAA共聚物含量对薄膜的紫外屏蔽性能的影响,结果表明,Lignin-g-PAA含量越高,薄膜的紫外屏蔽性能和可见光透过率越优异.Lignin star-shaped grafted poly(acrylic acid)copolymers(Lignin-g-PAA)with different grafting densities were synthesized via atom transfer radical polymerization(ATRP),and then electrostatically complexed in situ with imidazolium-based poly(ionic liquid)(PCMVImTFSI)to prepare lignin-based polyelectrolyte membranes(Lignin-PILM)with gradient pore structures.The influence of grafting density of Lignin-g-PAA on the thermal stability,surface morphology,and pore size distribution of the membrane was investigated.Specifically,Lignin-PILM constructed by Lignin2-g-PAA_(9) with moderate grafting density exhibited a gradient nano-pore structure and excellent thermal stability.Subsequently,the effect of Lignin-g-PAA copolymer content on the UV shielding performance of the membrane was explored.The study revealed that higher Lignin-g-PAA content resulted in superior UV shielding capability and visible light transmittance of the membrane.

关 键 词：木质素 接枝聚合物 聚离子液体 多孔膜 紫外屏蔽 

分 类 号：O631[理学—高分子化学]