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Enhanced properties of poly(vinyl alcohol) composite films with functionalized graphene

机译：具有官能化石墨烯的聚（乙烯醇）复合膜的增强性能

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摘要

Three types of poly(vinyl alcohol) (PVA) composite films containing graphene oxide (GO), reduced graphene oxide (RGO) and novel sulfonated graphene oxide (SRGO) as a filler were successfully prepared by a simple solution casting. The structure and properties of graphene-based PVA composites films were investigated. The results showed that the properties of the polymer composites films were sensitive to the structure of graphene. GO acted as the best reinforcing filler to enhance the mechanical property of PVA because it has many oxygen functional groups which could enhance the interfacial interactions through the formation of hydrogen bonds with PVA chains. The tensile strength and modulus of the resulting PVA/GO composites could reach 280 MPa and 13.5 GPa, respectively. RGO could improve the dielectric properties of PVA and the electrical conductivities were increased by similar to 10(11) orders of magnitude in the composites with 50 wt% of filler loadings as compared to that of neat PVA. SRGO could enhance the mechanical and dielectric properties of PVA simultaneously. The mechanical properties of PVA could be efficiently improved due to the strong interaction between the -SO3H groups on the SRGO sheets and PVA chains. The tensile strength and modulus of the resulting PVA/SRGO composites could reach 252 MPa and 8.5 GPa, respectively. Although the conductivity values of PVA/SRGO composites were less than those of the PVA/RGO composites, they were still increased by similar to 10(10) orders of magnitude in the composites with 50 wt% of filler loadings as compared to that of neat PVA. These results demonstrated that PVA films with enhancement in the mechanical and electronic properties can be fabricated with proper modified graphene.
机译：通过简单的溶液浇铸成功地制备了含有石墨烯（GO），含有石墨烯（RGO）和新型磺化石墨烯氧化物（SRGO）的三种类型的聚（乙烯醇）复合膜。研究了基于石墨烯的PVA复合膜的结构和性质。结果表明，聚合物复合材料膜的性质对石墨烯结构敏感。持续作为最佳的增强填料，以增强PVA的力学性质，因为它具有许多氧官能团，可以通过形成氢键与PVA链来增强界面相互作用。所得PVA / GO复合材料的拉伸强度和模量分别可以达到280MPa和13.5GPa。 Rgo可以改善PVA的电介质特性，并且通过与整齐PVA相比，在复合材料中，在复合材料中，在复合材料中增加了电导率的介电性能。与整洁的PVA相比，具有50wt％的填料载荷的10％（11）个级。 SRGO可以同时增强PVA的机械和介电性能。由于SRO片材和PVA链中的-SO3H基团之间的强相互作用，PVA的机械性能可以有效地改善。所得PVA / SRGO复合材料的拉伸强度和模量分别可以达到252MPa和8.5GPa。尽管PVA / SRGO复合材料的电导率小于PVA / RGO复合材料的电导率，但它们仍然在复合材料中与具有50wt％的填充载荷的复合材料中的10（10）个级相比，但与整洁相比PVA。这些结果表明，具有机械和电子性质的增强的PVA薄膜可以用适当的修饰石墨烯制造。

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  • 来源
    《RSC Advances》 |2015年第118期|共8页
  • 作者

    Mo Shenbin; Peng Li; Yuan Chunqiu; Zhao Chunyan; Tang Wei; Ma Cunliang; Shen Jiaxin; Yang Wenbin; Yu Youhai; Min Yong; Epstein Arthur J.;

  • 作者单位

    Nanjing Univ Posts &

    Telecommun Inst Adv Mat Nanjing 210046 Jiangsu Peoples R China;

    Yancheng Addit Mfg Technol Co Ltd Yancheng 224005 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Inst Adv Mat Nanjing 210046 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Inst Adv Mat Nanjing 210046 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Inst Adv Mat Nanjing 210046 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Inst Adv Mat Nanjing 210046 Jiangsu Peoples R China;

    Nanjing Univ Posts &

    Telecommun Inst Adv Mat Nanjing 210046 Jiangsu Peoples R China;

    Yancheng Addit Mfg Technol Co Ltd Yancheng 224005 Jiangsu Peoples R China;

    Chinese Acad Sci Xian Inst Opt &

    Precis Mech Xian 710119 Peoples R China;

    Nanjing Univ Posts &

    Telecommun Inst Adv Mat Nanjing 210046 Jiangsu Peoples R China;

    Chinese Acad Sci Xian Inst Opt &

    Precis Mech Xian 710119 Peoples R China;

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  • 正文语种 eng
  • 中图分类 化学;
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