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首页> 外文期刊>Reactive & Functional Polymers >Hydrophilic and anti-fouling PVDF blend ultrafiltration membranes using polyacryloylmorpholine-based triblock copolymers as amphiphilic modifiers
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Hydrophilic and anti-fouling PVDF blend ultrafiltration membranes using polyacryloylmorpholine-based triblock copolymers as amphiphilic modifiers

机译：使用聚丙烯酰霉卟啉基三嵌段共聚物的亲水性和抗结垢PVDF混合超滤膜作为两亲性改性剂

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摘要

To fabricate hydrophilic and anti-fouling PVDF ultrafiltration membrane, a kind of tailor-made symmetrical amphiphilic triblock copolymer, polyacryloylmorpholine-b-poly (methyl methacrylate)-b-polyacryloylmorpholine (PACMO-b-PMMA-b-PACMO, termed as PAMA), was prepared via RAFT polymerization and employed as an in situ surface segregation modifier. FTIR, H-1 NMR, and GPC were used to verify the well-defined chemical structure of PAMA. The hydrophilic PACMO segments of PAMA were enriched on the surface of membrane skin and interior pores as confirmed by ATR-FTIR, XPS, EDX, and water contact angle tests, endowing the blend membranes with outstanding hydrophilicity. The different cross-sectional and surface morphologies of the PVDF/PAMA blend membranes indicated that the introduction of PAMA modifiers could manipulate membrane structure due to their strong pore-forming ability. Compared with the pure PVDF membrane, PVDF/PAMA blend membranes showed higher permeability for water (28.1 times higher), excellent rejection for bovine serum albumin (up to 98.3%), and enhanced fouling resistance with a higher flux recovery ratio (up to 98.1%). Therefore, the approach of in situ surface segregation employed the RAFT mediated well-defined amphiphilic PAMA triblock copolymer modifiers for the preparation of anti-fouling PVDF membranes showed a great potential in water purification.
机译：用于制造亲水性和防污PVDF超滤膜，一种量身定制的对称两亲性三嵌段共聚物，聚丙烯酰氯-B-聚（甲基丙烯酸甲酯）-B-聚丙烯酰基 - 聚丙烯酰甲络合物（PACMO-B-PMMA-B-PACMO称为PAMA） ，通过筏聚合制备并用作原位表面偏析改性剂。 FTIR，H-1 NMR和GPC用于验证PAMA的明确定义的化学结构。 PAMA的亲水性PAMMO区段在膜皮肤和内部孔表面上富集，如ATR-FTIR，XPS，EDX和水接触角测试所证实，赋予了具有卓越亲水性的共混膜。 PVDF / PAMA混合物膜的不同横截面和表面形态表明，引入PAMA改性剂可以由于其孔隙形成能力而操纵膜结构。与纯PVDF膜相比，PVDF / PAMA混合物膜显示出较高的水渗透性（28.1倍），对牛血清白蛋白的优异排斥（高达98.3％），并提高焊剂回收率较高的污垢抗性（高达98.1 ％）。因此，原位表面偏析的方法采用筏介导的介导的明确定义的两亲性帕马克罗克共聚物改性剂，用于制备抗污染PVDF膜的水净化潜力。

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  • 来源
    《Reactive & Functional Polymers》 |2019年第6期|92-101|共10页
  • 作者

    Zhao Junqiang; Han Hongrui; Wang Qiqi; Yan Chengyou; Li Dongyang; Yang Jing; Feng Xia; Yang Ning; Zhao Yiping; Chen Li;

  • 作者单位

    Tianjin Polytech Univ Sch Mat Sci & Engn Natl Ctr Int Joint Res Separat Membranes State Key Lab Separat Membranes & Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci & Engn Natl Ctr Int Joint Res Separat Membranes State Key Lab Separat Membranes & Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci & Engn Natl Ctr Int Joint Res Separat Membranes State Key Lab Separat Membranes & Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci & Engn Natl Ctr Int Joint Res Separat Membranes State Key Lab Separat Membranes & Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci & Engn Natl Ctr Int Joint Res Separat Membranes State Key Lab Separat Membranes & Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci & Engn Natl Ctr Int Joint Res Separat Membranes State Key Lab Separat Membranes & Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci & Engn Natl Ctr Int Joint Res Separat Membranes State Key Lab Separat Membranes & Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci & Engn Natl Ctr Int Joint Res Separat Membranes State Key Lab Separat Membranes & Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci & Engn Natl Ctr Int Joint Res Separat Membranes State Key Lab Separat Membranes & Membrane Proc Tianjin 300387 Peoples R China;

    Tianjin Polytech Univ Sch Mat Sci & Engn Natl Ctr Int Joint Res Separat Membranes State Key Lab Separat Membranes & Membrane Proc Tianjin 300387 Peoples R China|Tianjin Univ Technol Sch Mat Sci & Engn Tianjin 300384 Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Anti-fouling PVDF membrane; Amphiphilic triblock copolymer; Polyacryloylmorpholine; Blend modification;

    机译：防污PVDF膜;两亲三嵌段共聚物;聚丙烯酰丙酮;混合改性;

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