Vinicius Oliveira Aguiar, Maria Inês Bruno Tavares
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引用次数: 0
Abstract
In the present work, the development of nanocomposites was carried out by processing the nanofillers viscogel clay B8 and vanadium oxide with the polycaprolactone (PCL) matrix, through a twin-screw extruder. The evaluation of the nanomaterial obtained by X-ray diffraction technique showed that the addition of nanoparticles caused change in the crystallization process and in the crystallinity index, due to the action of them as a nucleating agent. Evaluation of thermogravimetric analysis, it was observed an increase in the thermal stability of nanocomposites containing clay. Analyzing the SEM micrographs, it was observed that there was a good dispersion and distribution of nanofillers in the matrix. The differential scanning calorimetry and X-ray diffraction technique, showed the possibility of nanoparticles are acting as a nucleating agent, in some mixtures there was change in the values of crystallinity index. Through nuclear magnetic resonance analysis, it was evaluated a good homogeneity of the nanofiller in the matrix due to the intermolecular interaction promoting a better dispersion and distribution of the nanoparticle in the polymer.
在本研究中,通过双螺杆挤压机将纳米填料粘胶土 B8 和氧化钒与聚己内酯(PCL)基体一起加工,开发出了纳米复合材料。通过 X 射线衍射技术对获得的纳米材料进行的评估表明,纳米颗粒的加入会改变结晶过程和结晶度指数,这是由于它们起到了成核剂的作用。通过热重分析评估,发现含有粘土的纳米复合材料的热稳定性有所提高。通过分析扫描电镜显微照片,可以发现纳米填料在基体中的分散和分布良好。差示扫描量热法和 X 射线衍射技术表明,纳米粒子有可能充当成核剂,在某些混合物中,结晶度指数值发生了变化。核磁共振分析表明,由于分子间的相互作用促进了纳米粒子在聚合物中更好的分散和分布,基质中的纳米填料具有良好的均匀性。
期刊介绍:
"Polymer Bulletin" is a comprehensive academic journal on polymer science founded in 1988. It was founded under the initiative of the late Mr. Wang Baoren, a famous Chinese chemist and educator. This journal is co-sponsored by the Chinese Chemical Society, the Institute of Chemistry, and the Chinese Academy of Sciences and is supervised by the China Association for Science and Technology. It is a core journal and is publicly distributed at home and abroad.
"Polymer Bulletin" is a monthly magazine with multiple columns, including a project application guide, outlook, review, research papers, highlight reviews, polymer education and teaching, information sharing, interviews, polymer science popularization, etc. The journal is included in the CSCD Chinese Science Citation Database. It serves as the source journal for Chinese scientific and technological paper statistics and the source journal of Peking University's "Overview of Chinese Core Journals."