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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Sodium deoxycholate functionalized graphene and its composites with polyvinyl alcohol
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Sodium deoxycholate functionalized graphene and its composites with polyvinyl alcohol

机译：脱氧胆酸钠官能化石墨烯及其与聚乙烯醇的复合材料

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摘要

Sodium deoxycholate (SDC), a kind of bile derivative, is used to noncovalently functionalize graphene. Stable and high concentration (up to 20 mg ml ~(-1)) of graphene colloid is obtained. The stabilization mechanism is revealed to be hydrophobic interaction, electrostatic repulsion and hydrogen bonding. Single-layer and few-layer graphene are obtained in the colloid. Subsequently, the obtained graphene sheets are incorporated into a polyvinyl alcohol (PVA) matrix by solution casting to fabricate PVA/graphene composites. Morphological observations substantiate the homogeneous dispersion of graphene in the PVA matrix and strong interfacial adhesion between them. Significant improvements in tensile strength and modulus of the composite films are observed.
机译：脱氧胆酸钠（SDC）是一种胆汁衍生物，用于非共价官能化石墨烯。获得稳定且高浓度（最高20 mg ml〜（-1））的石墨烯胶体。揭示出稳定机制是疏水相互作用，静电排斥和氢键。在胶体中获得单层和少层石墨烯。随后，通过溶液流延将获得的石墨烯片材引入聚乙烯醇（PVA）基体中以制造PVA /石墨烯复合材料。形态学观察证实了石墨烯在PVA基质中的均匀分散以及它们之间的强界面粘附性。观察到复合膜的拉伸强度和模量有显着改善。

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