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双酚S型杂萘联苯共聚醚砜膜材料的合成与性能研究

作者：张瑛楠，王旭，徐培琦，王浩，徐树刚，张守海，蹇锡高

单位：大连理工大学化工学院, 辽宁省高性能树脂材料专业技术创新中心, 辽宁省高分子科学与工程重点实验室, 大连市膜材料与膜过程重点实验室, 大连 116024

关键词：杂萘联苯共聚醚砜；合成；聚合物膜；中空纤维膜

DOI号：

分类号： TQ324.8

出版年,卷(期):页码： 2023,43(5):37-43

摘要：

以4-(4-羟基苯基)-2,3-二氮杂萘-1-酮、双酚S和4,4'-二氯二苯砜为原料，采用亲核缩聚法合成了一系列双酚S型杂萘联苯共聚醚砜(PPESS)。通过核磁共振、红外与X射线衍射光谱表征了PPESS的结构。测试了PPESS的特性粘度、分子量、溶解性、亲水性和拉伸性能，采用示差扫描量热法和热失重分析法对PPESS的热性能进行了分析。采用干湿相转化法将PPESS制成中空纤维膜，考察了二氮杂萘酮结构单元含量对膜渗透选择性的影响。结果表明：PPESS的玻璃化温度介于249-288 ℃，5%热失重温度介于449-518 ℃且PPESS的热性能随二氮杂萘酮结构单元含量的增加而增强。此外，随着该结构单元含量的增加，膜的纯水通量增加，而牛血清蛋白(BSA)截留率变化不大；PPESS-80膜的纯水通量为51.8 L -2 h-1，BSA截留率为97.2%。

A series of bisphenol S type copoly(phthalazinone ether sulfone) (PPESS) were synthesized from (4-(4'-hydroxylphenyl)-2,3-phthalazin-1-one, bisphenol S, and 4,4'-dichlorodiphenyl sulfone. The structure of PPESS were characterized by nuclear magnetic resonance, infrared spectra, and X-ray diffraction spectra. Intrinsic viscosity, molecular weight, solubility, hydrophilicity, and tensile properties of PPESS were investigated. Thermal performance of PPESS were analyzed using differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA). The PPESS hollow fiber membranes were prepared by dry-wet phase conversion, and the effect of the proportion of phthalazinone moieties on the membrane permeability selectivity was investigated. The results show that the glass transition temperature (Tg) of PPESS was in the range of 249-288 ℃, the 5% mass-loss temperature (T5%) was in the range of 449-518 ℃, and the thermal performance increases with the increase of the proportion of phthalazinone moiety in PPESS. In addition, the water flux of the membranes increase with the increase of the proportion of phthalazinone moiety in PPESS, while the bovine serum protein (BSA) retention rate does not change significantly; PPESS-80 membrane has the best permeation selectivity, with pure water flux of 51.8 L-2 h-1 and BSA retention rate of 97.2%.

基金项目：

基金项目：国家自然科学基金委创新研究群体项目(22021005)；中央高校基本科研业务费专项资金资助(DUT22LAB605)

作者简介：

张瑛楠（1998-），女，山东潍坊人，硕士，从事高性能高分子膜材料研究

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