MOLECULAR ACTUATOR OF GEL WITH CONTROL SYSTEM INVOLVING IONS AND SOLVENT TRANSFER

1.以聚乙烯醇和2-丙烯酰胺-2-甲基丙烷磺酸为原料，进行了互穿网络致动器膜凝胶的分子设计，并对膜的物理化学结构与物理性能（水化结构、溶胀性）之间的关系进行了研究.膜弯曲机理的分析膜在电场中向阴极弯曲，膜的弯曲性能用电场强度、离子基团含量、本文研究了外电解质溶液浓度和膜厚度对膜弯曲过程的影响，并对膜弯曲过程中的离子传递和膜内应力分布进行了研究。对膜弯曲过程中的弯曲机理进行了阐述，发现膜的弯曲模式是由Donnan平衡引起的膜内离子的时空分布决定的.基于Donnan平衡理论对快速弯曲系统进行了优化设计，发现Donnan比是快速弯曲系统设计中的一个重要参数，并根据弹性理论建立了理论模型，较好地模拟了薄膜的弯曲模式。

1. MOLECULAR DESIGN OF GEL FOR ACTUATORMEMBRANE GEL WITH INTERPENETRATE NETWORK WAS DEVELOPED FROM POLY (VINYL ALCOHOL) AND 2-ACRYLAMIDE-2-METHYLPROPANE SULFONIC ACID.THE RELATIONSHIP BETWEEN PHYSICOCHEMICAL STRUCTURE OF THE MEMBRANE AND PHYSICAL PROPERTY (HYDRATION STRUCTURE,SWELLING) WERE ELUCIDATED.2. ANALYSIS OF BENDING MECHANISM IN THE MEMBRANETHE MEMBRANE BENT TOWARD CATHODE IN AN ELECTRIC FIELD.THE BENDING PROPERTY OF THE MEMBRANE WAS INVESTIGATED IN TERMS OF FIELD INTENSITY,IONIC GROUP CONTENT,CONCENTRATION OF OUTER ELECTROLYTE SOLUTION AND MEMBRANE THICKNESS.A ELECTROLYTIC CELL WITH 5 COMPARTMENTS WAS NEWLY DEVELOPED TO ELUCIDATE BOTH IONIC TRANSFER AND STRESS DISTRIBUTION INSIDE THE MEMBRANE IN THE BENDING PROCESS.THE DYNAMICS OF IONS AND THE MECHANICAL MECHANISM OF BENDING IN THE BENDING PROCESS WERE CLARIFIED.IT WAS FOUND THAT THE BENDING PATTERN WAS DETERMINED BY THE SPATIOTEMPORAL DISTRIBUTION OF IONS INSIDE THE MEMBRANE,WHICH IS INDUCED BY DONNAN EQUILIBRIUM.3. OPTIMIZATION OF THE BENDING SYSTEM FOR QUICK RESPONSEOPTIMIZATION OF THE SYSTEM FOR QUICK BENDING WAS PERFORMED BASED ON THE DONNAN EQUILIBRIUM THEORY.THE DONNAN RATIO WAS FOUND TO BE A EFFECTIVE PARAMETER IN THE DESIGN OF THE SYSTEM FOR QUICK BENDING.THEORETICAL MODEL WAS DEVELOPED BASED ON THE ELASTIC THEORY AND THE BENDING PATTERN ON TEH MEMBRANE WAS SIMULATED BY THE MODEL FAIRY WELL.