E3S Web Conf.
Volume 236, 20213rd International Conference on Energy Resources and Sustainable Development (ICERSD 2020)
|Number of page(s)||4|
|Section||New Energy Technology and Clean Energy Production and Transformation|
|Published online||09 February 2021|
Study on the Performances of PLLA/CaSiO3 Composites
1 Chongqing Key Laboratory of Environmental Materials & Remediation Technologies, Chongqing University of Arts and Sciences, Chongqing-402160, P.R. China
2 College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, Chongqing-402160, P.R. China
* Corresponding author:email@example.com
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.
© The Authors, published by EDP Sciences 2021
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