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Poly(amic acid)-clay nacrelike composites prepared by electrophoretic deposition

机译：电泳沉积法制备的聚酰胺酸黏土珍珠质复合材料

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摘要

Poly(amic acid) (PAA)-clay nacrelike composite films have been prepared by electrophoretic deposition of an emulsion of PAA, which was synthesized from pyromellitic dianhydride and 4,4'-dianminodiphenyl ether (ODA), containing various loadings of ODA-modified montmorillonite (MMT). The layered silicate was intercalated through reacting with PAA, and the ordered layered assembly of the PAA-MMT composite films was successfully accomplished, as conformed by Fourier transform infrared analysis and x-ray diffraction. The structural characterization of the films was supported by scanning electron microscopy, which displayed an ordered layered structure. The thermogravimetric analysis showed the content of the ODA-modified clay in PAA-MMT composite films that changed from 14.3 to 32.1 wt% and the improved thermal properties of the composite films. The mechanical properties of the composites were measured by tensile test. It was found that the modulus and strength of the composite films were greatly improved compared to those of the pure polymer film. An increment of about 155% in the modulus and 40% in the tensile strength were obtained from the composite films.
机译：通过电泳沉积由均苯四甲酸二酐和4,4'-双氨基二苯醚（ODA）合成的PAA乳液制备了聚（酰胺酸）（PAA）-粘土珍珠质复合膜，该乳液包含各种载量的ODA改性蒙脱石（MMT）。通过与PAA反应插入层状硅酸盐，并且通过傅立叶变换红外分析和X射线衍射证实，成功地完成了PAA-MMT复合膜的有序层状组装。膜的结构表征由扫描电子显微镜支持，其显示出有序的分层结构。热重分析表明，PAA-MMT复合膜中ODA改性粘土的含量从14.3 wt％变为32.1 wt％，并且复合膜的热性能得到改善。通过拉伸试验测量复合材料的机械性能。发现与纯聚合物膜相比，复合膜的模量和强度大大提高。从复合膜获得模量增加约155％和拉伸强度增加约40％。

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  • 来源
    《Journal of Materials Research》 |2008年第6期|p.1706-1712|共7页
  • 作者

    Chang-An Wang; Bin Long; Wei Lin; Yong Huang; Jialin Sun;

  • 作者单位

    State Key Laboratory of New Ceramics and Fine Processing, Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料学;
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