Chemical modification and plasma-induced grafting of pyrolitic lignin. Evaluation of the reinforcing effect on lignin/poly(L-lactide) composites

被引：34

作者：

Dick, Teo Atz ^{[1
]}

Couve, Joel ^{[1
]}

Gimello, Olinda ^{[1
]}

Mas, Andre ^{[1
]}

Robin, Jean-Jacques ^{[1
]}

机构：

[1] Univ Montpellier, CNRS, Inst Charles Gerhardt Montpellier,UMR 5253, ENSCM UM Equipe Ingn & Architectures Macromol, CC 1702,Pl Eugene Bataillon, F-34095 Montpellier 5, France

来源：

POLYMER | 2017年 / 118卷

关键词：

Lignin; Polylactide; Plasma; WATER-INSOLUBLE FRACTION; MECHANICAL-PROPERTIES; POLY(LACTIC ACID); PYROLYTIC LIGNIN; MICROCRYSTALLINE CELLULOSE; POLYPROPYLENE COMPOSITES; MULTIPHASE MATERIALS; POLY(L-LACTIC ACID); SURFACE-PROPERTIES; MASS-SPECTROMETRY;

D O I：

10.1016/j.polymer.2017.04.036

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Pyrolitic lignin was modified through two methods. First, it was grafted with polylactide chains via a solvent-free process by ring-opening polymerization of L-lactide using calcium hydride as a catalyst. The efficiency of grafting was determined by infra-red, nuclear magnetic resonance and time-of-flight secondary ion mass spectrometry analyses. Then, lignin particles were oxygen plasma-treated and immersed in L-lactide solution. Infra-red and X-ray photoelectron spectroscopy revealed that chains bearing ester groups similar to that of lactide were covalently grafted onto the lignin. Composite cast films based on poly(L-lactide) matrix containing ungrafted lignin (lignin/PLLA), chemically-grafted lignin copolymer (PLA-g-lignin/PLLA) and plasma-treated lignin (plasma-treated lignin/PLLA) were investigated. Differential scanning calorimetry and dynamical mechanical analyses revealed that plasma treated lignin preserved the crystalline structure of PLLA matrix and had a significant reinforcing effect compared with lignin and PLA-g-lignin. Results were compared with literature data. (C) 2017 Elsevier Ltd. All rights reserved.

引用

页码：280 / 296

页数：17

共 60 条

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