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首页> 外文会议>Characterization of minerals, metals, and materials 2018 >Evaluation of Microcapsules of PBSL/MMT-K and PBSL/OMMT-K Nanocomposites
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Evaluation of Microcapsules of PBSL/MMT-K and PBSL/OMMT-K Nanocomposites

机译：PBSL / MMT-K和PBSL / OMMT-K纳米复合材料微胶囊的评价

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摘要

Biodegradable polymer microcapsules have been used as a control sustained release system with many applications. Studies reveal that the incorporation of nanoparticles improves matrix properties, even more so if the clay is modified. The objective of this work was to compare microcapsules of poly (succinate-co-butylene lactate) (PBSL) reinforced with Brazilian clay, composed of smectites and kaolinite, in its natural (MMT/K) and modified (O-MMT/K) forms. Nanocomposites and microcapsules were synthesized by emulsification-diffusion of solvent and solvent diffusion methods. Its characterization was then performed by scanning electron microscopy (SEM), stereomicroscopy and wide-angle X-ray diffraction (XRD). The results reported corroborate that PBSL/OMMT-K form an intercalated montmorillonite and kaolinite nanostructure, capable of generating uniform spherical microcapsules with diameter values smaller than that of PBSL/ MMT-K, reaching 5-10 urn. DRX indicates that there was a real change in the clay structure. The incorporation of modified clay showed an improvement in surface quality and the strength of microcapsules, making it possible to produce smaller sizes.
机译：可生物降解的聚合物微胶囊已被用作具有许多应用的控制缓释系统。研究表明，纳米粒子的引入改善了基体性能，如果对粘土进行了改性，则更是如此。这项工作的目的是比较天然（MMT / K）和改性（O-MMT / K）的由蒙脱石和高岭石组成的巴西粘土增强的聚（琥珀酸-共-丁烯酸乳酸）微囊（PBSL）形式。通过溶剂的乳化扩散和溶剂扩散法合成了纳米复合材料和微胶囊。然后通过扫描电子显微镜（SEM），体视显微镜和广角X射线衍射（XRD）对其进行表征。结果报道证实，PBSL / OMMT-K形成了层状蒙脱土和高岭石的纳米结构，能够生成直径小于PBSL / MMT-K的均匀球形微囊，达到5-10微米。 DRX表明粘土结构发生了真正的变化。改性粘土的掺入显示出表面质量和微胶囊强度的改善，使得可以生产更小的尺寸。

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  • 来源
  • 会议地点 Phoenix(US)
  • 作者

    B. B. Michel; F. R. Valenzuela-Diaz; H. Wiebeck; W. S. Hui; M. G. Silva-Valenzuela;

  • 作者单位

    Metallurgic and Materials Engineer Department, Polytechnic School of University of Sao Paulo, Avenida Prof. Mello Moraes, 2463, Sao Paulo, SP 05508-030, Brazil;

    Metallurgic and Materials Engineer Department, Polytechnic School of University of Sao Paulo, Avenida Prof. Mello Moraes, 2463, Sao Paulo, SP 05508-030, Brazil;

    Metallurgic and Materials Engineer Department, Polytechnic School of University of Sao Paulo, Avenida Prof. Mello Moraes, 2463, Sao Paulo, SP 05508-030, Brazil;

    Metallurgic and Materials Engineer Department, Polytechnic School of University of Sao Paulo, Avenida Prof. Mello Moraes, 2463, Sao Paulo, SP 05508-030, Brazil;

    Metallurgic and Materials Engineer Department, Polytechnic School of University of Sao Paulo, Avenida Prof. Mello Moraes, 2463, Sao Paulo, SP 05508-030, Brazil,Naturals and Humans Science Centers, Federal University of ABC, Avenida dos Estados, 5001. Santo Andre, SP 09210-580, Brazil;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Microcapsule; Nanocomposite; PBSL; Organoclay;

    机译：微胶囊；纳米复合材料PBSL;有机粘土;

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