羟基化PPESK复合膜的制备及性能研究

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摘要采用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 Na₂SO₄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%。

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	邹宇阳
	李战胜
	赵思雨
	张守海
	蹇锡高

关键词：杂萘联苯聚芳醚砜酮羟基化改性复合膜

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 Na₂SO₄ 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%.

Keywords： poly(phthalazinone ether sulfone ketone) hydroxylation modification composite membrane

Received 2022-05-18;

Fund: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)。

About author: 邹宇阳(1996-),男,硕士研究生,现从事功能高分子膜材料及分离膜研究。

引用本文:

邹宇阳, 李战胜, 赵思雨, 张守海, 蹇锡高.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(3): 13-19

ZOU Yuyang, LI Zhansheng, ZHAO Siyu, ZHANG Shouhai, JIAN Xigao.Preparation and performance of hydroxylated PPESK composite membrane[J]. Chemcial Industry and Engineering, 2023,40(3): 13-19

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