文献类型：期刊文献

英文题名：Improving Fire-Retardant, Mechanical and Crystallinity Properties of Polylactide Using a Bioderived Schiff Base-Containing Polyphosphonate

作者：Xue, Yijiao[2] Zhang, Tianchen[2] Tian, Linfeng[2] Feng, Jiabing[3] Song, Fei[1] Pan, Zheng[2] Liu, Xiaohuan[4] Zhang, Meng[2] Zhou, Yonghong[2] Song, Pingan[5,6]

第一作者：Xue, Yijiao

机构：[1] Nanjing Forestry University, China; [2] Institute of Chemical Industry of Forest Products, Chinese Academy of Forestry [CAF], Nanjing, 210042, China; [3] China-Australia Institute for Advanced Materials and Manufacturing, Jiaxing University, Jiaxing, 314001, China; [4] Zhejiang Provincial Key Laboratory of Plant Evolutionary Ecology and Conservation, School of Life Sciences, Taizhou University, Taizhou, 318000, China; [5] Centre for Future Materials, University of Southern Queensland, Springfield, 4300, Australia; [6] School of Agriculture and Environmental Science, University of Southern Queensland, Springfield, 4300, Australia

年份：2023

外文期刊名：SSRN

收录：EI(收录号：20230148794)

语种：英文

外文关键词：Addition reactions - Additives - Carbonization - Crosslinking - Fires - Polyesters

摘要：To expand the practical application and realize sustainable development, it is urgent to develop advanced polylactide composites with fire retardancy and mechanically-strong properties by utilizing bio-derived additives. Unfortunately, such desired performance portfolio is still unsatisfactory due to unclear mechanism and improper design strategy. In this paper, a novel bio-derived polyphosphonate containing Schiff base (PVP) was prepared by a two-step method of condensation and addition reactions. By incorporating only 0.5 wt% PVP, the LOI value of PLA is increased to 32.5 vol% as well as achieving a UL-94 V-0 rating. Such superior fire retardancy is ascribed to the physical barrier effect of char residue, which arising from the cyclability of Schiff base and catalytic carbonization of polyphosphonate. Due to the crosslinking reaction between PLA and PVP and nucleating effect of PVP in the PLA matrix, the mechanical strength of PLA is increased by 10.2% with addition of 1.0 wt% PVP. This study provides a feasible way for designing bio-derived fire retardants to simultaneously improving the fire retardancy and mechanical strength of PLA, thus is expected to expand the practical application of PLA materials. ? 2023, The Authors. All rights reserved.