Nanocomposites based on poly-d,l-lactide and multiwall carbon nanotubes

Biomolecular engineering Pub Date : 2007-02-01 DOI:10.1016/j.bioeng.2006.05.021

L.P. Krul , A.I. Volozhyn , D.A. Belov , N.A. Poloiko , A.S. Artushkevich , S.A. Zhdanok , A.P. Solntsev , A.V. Krauklis , I.A. Zhukova

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引用次数: 22

Abstract

A possibility of poly-d,l-lactide modification by multiwall carbon nanotubes (MWCNT) has been shown. MWCNT were prepared from methane-air mixture upon atmospheric pressure without catalyst on high voltage atmospheric pressure discharge plasma set-up. According to scanning and transmission electronic microscope data carbon nanotubes diameters were within 12–60 nm. Quantities of MWCNT incorporated did not exceed 0.5%. Nanocomposites were obtained by sonification of mixture of a poly-d,l-lactide solution in chloroform and MWCNT followed by film casting on glass substrates. Tensile strength and thermomechanical properties of the dried composite films were investigated.

Introduction of MWCNT into poly-d,l-lactide has been shown to cause the enhanced polymer stability to thermal oxidative destruction. Taking into account the results obtained one could anticipate that implants from nanocomposites of poly-d,l-lactide with MWCNT would be dispersed in a living organism more slowly as compared to implants from pure poly-d,l-lactide without additives.

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聚d、l-丙交酯和多壁碳纳米管的纳米复合材料

多壁碳纳米管(MWCNT)修饰聚d -l -丙交酯的可能性已经被证明。在高压常压放电等离子体装置上，以甲烷-空气混合物为原料，在无催化剂的常压条件下制备MWCNT。扫描电镜和透射电镜数据显示，碳纳米管的直径在12 ~ 60 nm之间。MWCNT掺入量不超过0.5%。将聚d -l -丙交酯溶液与MWCNT混合在氯仿中进行超声处理，然后在玻璃基板上浇铸薄膜，得到纳米复合材料。研究了干燥后复合薄膜的拉伸强度和热力学性能。在聚d -l -丙交酯中引入MWCNT已被证明可以增强聚合物的热氧化破坏稳定性。考虑到获得的结果，我们可以预测，与不添加添加剂的纯聚d -l -丙交酯相比，由聚d -l -丙交酯与MWCNT组成的纳米复合材料制成的植入物在生物体中的分散速度要慢得多。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Biomolecular engineering

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