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首页> 外文期刊>RSC Advances >Covalently-functionalized graphene oxide via introduction of bifunctional phosphorus-containing molecules as an effective flame retardant for polystyrene
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Covalently-functionalized graphene oxide via introduction of bifunctional phosphorus-containing molecules as an effective flame retardant for polystyrene

机译：通过引入含双官能磷的分子作为聚苯乙烯的有效阻燃剂共价官能化的石墨烯氧化物

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摘要

Covalently-functionalized graphene oxide (FGO) was successfully prepared by grafting a novel phosphorus-containing flame retardant, [2-((6-oxidodibenzo[c,e][1,2]oxaphosphinin-6-yl)methoxy)acryloxyethylchlorophosphate, PACP], to graphene oxide (GO). The resulting FGO demonstrated hydrophobicity and stability in polar solvents such as N,N-dimethylformamide (DMF). The reactive vinyl groups of PACP attached to FGO further copolymerized with styrene to produce polystyrene-FGO (PS-FGO) nanocomposites. PS-FGO samples showed obviously improved fire-resistance, thermal behavior and glass transition temperature in comparison with those of neat PS and PS-GO samples, due to the good dispersion of FGO in PS as well as the strong interfacial bonds between FGO and the matrix. In addition, thermogravimetry-Fourier transform infrared (TG-FTIR) results indicated that the evolution of volatile products from PS decomposition was significantly inhibited by the introduction of FGO. Furthermore, scanning electron microscopy (SEM) and FTIR and Raman spectroscopy were employed to investigate the char residue, elaborating the flame-retardance mechanism.
机译：通过嫁接含新的含磷阻燃剂，[2 - （（6-氧化二苯并干细胞[C，E] [1,2]氧磷脂-6-基）甲氧基），成功制备共价官能化的石墨烯氧化物（FPO）。丙烯酰氧基乙基氯磷酸，PACP ]，到石墨烯氧化物（GO）。所得FGO在极性溶剂中显示出疏水性和稳定性，例如N，N-二甲基甲酰胺（DMF）。与FGO附着的PACP的反应性乙烯基，进一步与苯乙烯共聚以产生聚苯乙烯 - FPO（PS-FPO）纳米复合材料。由于FPO在PS和FGO之间的强界面键和FGO与FGO之间的强界面键，显然，PS-FP样品显示出明显改善的耐火性，热行为和玻璃化转变温度和PS-Go-Go样本相比。FGO与FGO之间的强界面键矩阵。此外，热重率 - 傅里叶变换红外（TG-FTIR）结果表明，通过引入FPO，PS分解的挥发性产品的演变显着抑制。此外，采用扫描电子显微镜（SEM）和FTIR和拉曼光谱来研究炭残渣，阐述阻燃机制。

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  • 来源
    《RSC Advances》 |2018年第44期|共8页
  • 作者

    Dai Kang; Sun Shuai; Xu Wenbin; Song Yuan; Deng Zhenzhen; Qian Xiaodong;

  • 作者单位

    Guangdong Univ Technol Sch Environm Sci &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Environm Sci &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Environm Sci &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Environm Sci &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Guangdong Univ Technol Sch Environm Sci &

    Engn Guangzhou 510006 Guangdong Peoples R China;

    Chinese Peoples Armed Police Force Acad Langfang 065000 Heibei Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 化学;
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