壳聚糖和聚甲基丙烯酸甲酯接枝碳纳米管的合成、表征及稳定性。

Synthesis, characterization and stability of chitosan and poly(methyl methacrylate) grafted carbon nanotubes.

机构信息

Cooperative Agricultural Research Center, Prairie View A&M University, Prairie View, TX 77446, USA.

出版信息

Spectrochim Acta A Mol Biomol Spectrosc. 2012 Oct;96:380-6. doi: 10.1016/j.saa.2012.05.042. Epub 2012 May 29.

DOI:10.1016/j.saa.2012.05.042

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC3455141/

Abstract

The single walled carbon nanotubes (CNTs) were effectively functionalized through grafting with chitosan (CTS) and poly(methyl methacrylate) (PMMA). Prior to grafting reaction, the carboxylated SWNCTs (SWNCTs-COOH) were obtained by treating pristine CNTs with a mixture of 3:1 (v/v) H(2)SO(4) and HNO(3), and the successive treatment of SWNCTs-COOH with SOCl(2) yielded the acylated CNTs (CNTs-COCl). The functionalized derivatives of CNTs were characterized using Fourier transform infrared spectroscopy, thermogravimetric analysis, atomic force microscopy, scanning electron microscopy and transmission electron microscopy. Both CTS and PMMA grafted CNTs showed better dispersability in acetic acid and tetrahydrofuran, in addition to higher stability in solution.

摘要

单壁碳纳米管（SWNTs）通过与壳聚糖（CTS）和聚甲基丙烯酸甲酯（PMMA）接枝得到有效功能化。在接枝反应之前，通过将原始 CNT 用 3:1（v/v）H2SO4和 HNO3 的混合物处理，得到羧基化 SWNTs（SWNTs-COOH），然后用 SOCl2对 SWNTs-COOH 进行连续处理得到酰化 CNT（CNTs-COCl）。通过傅里叶变换红外光谱、热重分析、原子力显微镜、扫描电子显微镜和透射电子显微镜对 CNTs 的功能化衍生物进行了表征。CTS 和 PMMA 接枝的 CNTs 在乙酸和四氢呋喃中显示出更好的分散性，并且在溶液中具有更高的稳定性。

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