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采用NaBH4对杂萘联苯聚芳醚砜酮(PPESK)支撑膜进行羟基化亲水改性，通过间苯二胺和均苯三甲酰氯的界面聚合反应制备复合膜。利用傅里叶变换红外光谱仪(FT-IR)、水接触角仪、扫描电子显微镜(SEM)和X射线光电子能谱仪(XPS)研究羟基化改性对膜表面的形貌结构、原子组成的影响，并测定复合膜对2 000 mg·L-1 Na_2SO4水溶液的分离性能。结果表明：羟基化改性的PPESK-OH支撑膜的亲水性增强；PPESK-OH复合膜的聚酰胺层的交联度较高；PPESK-OH复合膜和PPESK复合膜的脱盐率接近，PPESK-OH复合膜的水通量较PPESK复合膜增大了约38%。
Abstract：Poly(phthalazinone ether sulfone ketone)(PPESK) substrate membrane was hydroxylated with NaBH4. The composite membrane was prepared via the traditional interfacial polymerization of m-phenylenediamine(MPD) and trimethylene chloride(TMC). FT-IR, water contact angle goniometer, SEM and XPS were applied to characterize the surface morphology and elements distribution of the membranes. The hydrophilicity of PPESK-OH substrate membrane was enhanced by the presence of hydroxyl group reduced from carbonyl group. The cross-linking degree in polyamide(PA) layer of PPESK-OH composite was greater than that of PPESK composite membrane. For 2 000 mg·L-1 Na_2SO4 aqueous solution, the salt rejection of the PPESK-OH composite was almost the same as that of the PPESK composite membrane, the flux of the former was increased by 38%.
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基本信息:
DOI：10.13353/j.issn.1004.9533.20220339
中图分类号:TQ051.893
引用信息:
[1]邹宇阳,李战胜,赵思雨,等.羟基化PPESK复合膜的制备及性能研究[J].化学工业与工程,2023,40(03):13-19.DOI:10.13353/j.issn.1004.9533.20220339.
基金信息:
辽宁省“兴辽英才”项目科技创新领军人才(XLYC1802073); 大连市顶尖及领军人才项目(2019RD08)
2022-11-23
2022-11-23
2022-11-23