热致相分离法-溶胶凝胶工艺制备丙烯腈-丙烯酸甲酯共聚物微孔膜

发布时间：2018-03-21 02:43

  本文选题：丙烯腈-丙烯酸甲酯　切入点：热致相分离法　出处：《高分子材料科学与工程》2017年08期 　论文类型：期刊论文

【摘要】：以投料摩尔比为80/20的可熔融丙烯腈-丙烯酸甲酯共聚物(80/20AN-MA)为基体,良溶剂碳酸乙烯酯(EC)和绿色环保的非溶剂三甘醇二乙酸酯(TEGDA)为复配稀释剂,正硅酸乙酯(TEOS)为添加剂,热致相分离法(TIPS)溶胶凝胶工艺制备含有纳米二氧化硅(SiO2)的AN-MA杂化微孔膜。研究了复配稀释剂的配比、共聚物浓度以及添加剂的加入量对微孔膜的结构、孔隙率、亲水性、渗透性和力学性能的影响。结果表明,TIPS法结合溶胶凝胶工艺成功制备了SiO2纳米粒子均匀分布的AN-MA微孔膜。当共聚物质量分数为9%,复配稀释剂中EC与TEGDA的质量比为6/4,TEOS质量分数为5%,凝固浴为25℃水浴时,微孔膜的纯水通量提高了50%,达到120.0L/(m2·h),断裂强度提高了17%,达到3.4 MPa,膜的亲水性也得到了一定提高。
[Abstract]:The meltable acrylonitrile-methyl acrylate copolymer (80 / 20AN-MA) with a molar ratio of 80/20 was used as the matrix, the good solvent ethylene carbonate (ECC) and the green non-solvent triethylene glycol diacetate (TEGDA) as the complex diluent, and the tetraethyl orthosilicate (TEOS) as the additive. AN-MA hybrid microporous membranes containing nano-SiO2) were prepared by thermally induced phase separation (Tips) sol-gel process. The effects of the ratio of complex diluent, copolymer concentration and additive content on the structure, porosity and hydrophilicity of microporous membranes were studied. The effect of permeability and mechanical properties on the permeability and mechanical properties. The results show that AN-MA microporous membrane with uniform distribution of SiO2 nanoparticles has been successfully prepared by tips method and sol-gel process. When the mass fraction of copolymer is 9, the mass ratio of EC to TEGDA in the complex diluent is as follows: 1. When the mass fraction of TEOS is 6 / 4, the mass fraction of TEOS is 5 and the coagulation bath is 25 鈩，

本文编号：1641908