A novel phosphorus-containing poly(lactic acid) toward its flame retardation

被引：124

作者：

Wang, De-Yi ^{[1
]}

Song, Yan-Peng ^{[1
]}

Lin, Ling ^{[1
]}

Wang, Xiu-Li ^{[1
]}

Wang, Yu-Zhong ^{[1
]}

机构：

[1] Sichuan Univ, Ctr Degradat & Flame Retardant Polymer Mat, Coll Chem, State Key Lab Polymer Mat Engn,Natl Engn Lab Ecof, Chengdu 610064, Peoples R China

来源：

POLYMER | 2011年 / 52卷 / 02期

基金：

美国国家科学基金会;

关键词：

Flame retardance; Poly(lactic acid); Chain extension; FLAMMABILITY; CALORIMETER; POLYMERS;

D O I：

10.1016/j.polymer.2010.11.023

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

An inherently flame-retardant poly(lactic acid) (PLA) was synthesized via the chain-extending reactions of dihydroxyl terminated pre-poly(lactic acid) (pre-PLA), which was synthesized by direct polycondensation of L-lactic acid using 1,4-butanediol as initiator and stannous chloride (SnCl2) as catalyst, using ethyl phosphorodichloridate as chain extender. The resulting phosphorus-containing poly(lactic acid) (PPLA) was characterized by gel permeation chromatography (GPC), H-1 and P-31 nuclear magnetic resonance (H-1, P-31 NMR) and homonuclear correlation spectroscopy (COSY) and inductively coupled plasma-mass (ICP). A comprehensive flame retardant property of PPLA was evaluated by microscale combustion calorimetry (MCC), limiting oxygen index (LOI), vertical burning test (UL-94) and cone calorimeter test (CCT). PPLA has excellent flame retardancy and also can be used as a flame retardant for commercial PLA. Only 5 wt.% of PPLA added into PLA can obtain good flame retardant properties. As the content of PPLA is further increased to 10 wt%, PLA can have much better flame retardancy (LOI = 35 and UL-94 V-0 rating), lower peak heat release rate (pHRR) and longer ignition time (TTI) than neat PLA. All those results mean that this novel approach to impart flame retardancy to PLA is very effective. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：233 / 238

页数：6

共 20 条

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