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首页> 外文期刊>RSC Advances >Synergy of graphene oxide-silver nanocomposite and amphiphilic co-polymer F127 on antibacterial properties and permeability of PVDF membrane
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Synergy of graphene oxide-silver nanocomposite and amphiphilic co-polymer F127 on antibacterial properties and permeability of PVDF membrane

机译：石墨烯氧化银纳米复合材料和两亲性共聚物F127对PVDF膜的抗菌性能和渗透性的协同作用

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摘要

A graphene oxide-silver (GO-Ag) nanocomposite was formed by in situ reduction in the casting solution and was employed to decorate polyvinylidene fluoride (PVDF) membrane, together with amphiphilic copolymer F127. The finger-like macro-voids morphology and surface roughness of modified membranes were presented by SEM and AFM microscopy. The FTIR spectrum and XPS analysis confirmed that the hydrophilic component contributed to the membrane wettability and permeability, while the graphene oxide-silver nanocomposite was conductive to membrane antimicrobial activity. Results indicated that under the comprehensive optimal conditions the prepared membranes possessed pure water flux of 269 L m(-2) h(-1) and BSA rejection ratio of 98.2%, the dynamic contact angles ranged from 60.5 degrees to 10 degrees within 80 s and the inhibition zone sizes against E. coli and S. aureus were 3 mm and 2 mm, respectively. Overall, the permeability, hydrophilicity and antibiofouling of modified membranes were regulated by the synergism between multifunctional modifier GO-Ag and F127 in a controllable blending-reaction modification process.
机译：通过原位减少浇铸溶液形成石墨烯 - 银（GO-AG）纳米复合材料，用来装饰聚偏二氟乙烯（PVDF）膜，与两亲硅共聚物F127一起装饰。通过SEM和AFM显微镜提出了改性膜的指状宏观空隙形态和表面粗糙度。 FTIR光谱和XPS分析证实了亲水组分有助于膜润湿性和渗透性，而石墨烯 - 银纳米复合材料导致膜抗微生物活性。结果表明，在综合最优条件下，制备的膜具有269升（-2）H（-1）和BSA排斥比为98.2％的纯水通量，在80秒内的动态接触角范围为60.5度至10度而抑制区对大肠杆菌和金黄色葡萄球菌的尺寸分别为3mm和2mm。总体而言，通过多功能改性剂Go-Ag和F127在可控共混的反应改性过程中的协同作用调节改性膜的渗透性，亲水性和抗困难。

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  • 来源
    《RSC Advances》 |2016年第102期|共10页
  • 作者

    Chen Gui-E; Wu Qiong; Sun Wei-Guang; Xu Zhen-Liang; Xu Sun-Jie; Zhu Wei-Wei; Zheng Xiao-Peng;

  • 作者单位

    Shanghai Inst Technol Sch Chem &

    Environm Engn 100 Haiquan Rd Shanghai 201418 Peoples R China;

    Shanghai Inst Technol Sch Chem &

    Environm Engn 100 Haiquan Rd Shanghai 201418 Peoples R China;

    Shanghai Inst Technol Sch Chem &

    Environm Engn 100 Haiquan Rd Shanghai 201418 Peoples R China;

    East China Univ Sci &

    Technol Chem Res Ctr Membrane Sci &

    Engn R&

    D Lab State Key Lab Chem Engn 130 Meilong Rd Shanghai 200237 Peoples R China;

    Shanghai Inst Technol Sch Chem &

    Environm Engn 100 Haiquan Rd Shanghai 201418 Peoples R China;

    Shanghai Inst Technol Sch Chem &

    Environm Engn 100 Haiquan Rd Shanghai 201418 Peoples R China;

    Shanghai Inst Technol Sch Chem &

    Environm Engn 100 Haiquan Rd Shanghai 201418 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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