文章基本信息

标题：Study on the Performances of PLLA/CaSiO3 Composites
本地全文：下载
作者：Qiuhe Zhang ; Lisha Zhao ; Ting Deng 等
期刊名称：E3S Web of Conferences
印刷版ISSN：2267-1242
电子版ISSN：2267-1242
出版年度：2021
卷号：236
页码：2037
DOI：10.1051/e3sconf/202123602037
出版社：EDP Sciences
摘要：In the current work, calcium silicate (CaSiO3) was blended with the poly (L-lactic acid) (PLLA) to prepare the PLLA/CaSiO3 composites, and the crystallization process, melting process and thermal decomposition behavior of PLLA/CaSiO3 composites were studied. The promoting effect of CaSiO3 on the crystallization of PLLA was proved by the melt-crystallization, and the CaSiO3 content was a crucial factor to the crystallization behavior of PLLA. The crystallization temperature significantly affected the melting behavior of PLLA, and the double melting peaks degenerated into the single melting peak with the increasing of crystallization temperature from 90 °C to 130 °C. Additionally, for a given PLLA/CaSiO3 sample, the different melting processes in heating after the melt-crystallization results from the different heating rates, and the appearance of the cold-crystallization peak indicated the medium nucleation capacity of CaSiO3. The presence of CaSiO3 decreased the onset thermal decomposition temperature of PLLA, and this effect depended on the competitive relationship of the poor compatibility of PLLA with CaSiO3 and the content of CaSiO3 with high thermal stability.
其他摘要：In the current work, calcium silicate (CaSiO3) was blended with the poly (L-lactic acid) (PLLA) to prepare the PLLA/CaSiO3 composites, and the crystallization process, melting process and thermal decomposition behavior of PLLA/CaSiO3 composites were studied. The promoting effect of CaSiO3 on the crystallization of PLLA was proved by the melt-crystallization, and the CaSiO3 content was a crucial factor to the crystallization behavior of PLLA. The crystallization temperature significantly affected the melting behavior of PLLA, and the double melting peaks degenerated into the single melting peak with the increasing of crystallization temperature from 90 °C to 130 °C. Additionally, for a given PLLA/CaSiO3 sample, the different melting processes in heating after the melt-crystallization results from the different heating rates, and the appearance of the cold-crystallization peak indicated the medium nucleation capacity of CaSiO3. The presence of CaSiO3 decreased the onset thermal decomposition temperature of PLLA, and this effect depended on the competitive relationship of the poor compatibility of PLLA with CaSiO3 and the content of CaSiO3 with high thermal stability.