Preparation of PVP-PVA-exfoliated graphite cross-linked composite hydrogels for the incorporation of small tin nanoparticles

被引：19

作者：

Delbecq, Frederic ^{[1
]}

Kono, Fumihiko ^{[2
]}

Kawai, Takeshi ^{[2
]}

机构：

[1] NIMS, Tsukuba, Ibaraki 3050044, Japan

[2] Tokyo Univ Sci, Dept Ind Chem, Shinjuku Ku, Tokyo 1628601, Japan

来源：

EUROPEAN POLYMER JOURNAL | 2013年 / 49卷 / 09期

关键词：

Exfoliated graphite; Poly(vinyl pyrrolidone) hydrogel; Composite; Swelling; Tin nanoparticles; POLY(VINYL ALCOHOL); CARTILAGE; RADIATION; GRAPHENE; ALGINATE;

D O I：

10.1016/j.eurpolymj.2013.06.014

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The direct exfoliation of graphite was achieved in water using water-soluble poly(vinyl pyrrolidone) (PVP) and poly(vinyl alcohol) (PVA). Prepared wrapped graphene dispersion was employed for the synthesis of chemically cross-linked PVP/PVA/exfoliated graphite (G) composite hydrogels. The swelling behaviour of these hydrogels was studied in aqueous solution of stannous chloride, followed by treatment in a bath of sodium borohydride (NaBH4). The previous PVP/PVA-graphene aqueous dispersion was analyzed by UV-Visible and Raman spectroscopy. The morphology of the composite hydrogels was observed by field-emission scanning electron microscopy (FE-SEM). The successive modifications of the composite hydrogels, in particular the incorporation of tin nanoparticles (SnNPs) were monitored by (FT-IR) Fourier transform-infrared spectroscopy. The size and shape of the incorporated SnNPs were controlled by transmission electron microscopy (TEM). (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：2654 / 2659

页数：6

共 36 条

[1] Stable Aqueous Dispersions of Noncovalently Functionalized Graphene from Graphite and their Multifunctional High-Performance Applications [J].