Investigation of the graft length impact on the interfacial toughness in a cellulose/poly(ε-caprolactone) bilayer laminate

被引：36

作者：

Lonnberg, Hanna ^{[1
]}

Fogelstrom, Linda ^{[1
]}

Zhou, Qi ^{[1
]}

Hult, Anders ^{[1
]}

Berglund, Lars ^{[1
]}

Malmstrom, Eva ^{[1
]}

机构：

[1] Royal Inst Technol, SE-10044 Stockholm, Sweden

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2011年 / 71卷 / 01期

关键词：

Microfibrillated cellulose grafted with polycaprolactone; Polymer-matrix composites; Laminate; Wood; Interfacial strength; Delamination; RING-OPENING POLYMERIZATION; COMPOSITE-MATERIALS; CELLULOSE FIBERS; POLY(EPSILON-CAPROLACTONE); NANOFIBERS; POLYMERS; FRACTURE;

D O I：

10.1016/j.compscitech.2010.09.007

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

Interfacial adhesion between immiscible cellulose-polymer interfaces is a crucial property for fibrous biocomposites. To tailor the interfacial adhesion, the grafting of polymers from cellulose films was studied using ring-opening polymerization of epsilon-caprolactone. The poly(epsilon-caprolactone) (PCL) grafted cellulose was analyzed with FTIR, AFM and via water CA measurements. The graft length was varied by the addition of a free initiator, enabling tailoring of the interfacial toughness. Films of microfibrillated cellulose were grafted with PCL and hot-pressed together with a PCL-film to form a bilayer laminate. Interfacial peeling toughness correlates very strongly with PCL degree of polymerization (DP). PCL grafts form physical entanglements in the PCL matrix and promote significant plastic deformation in the PCL bulk, thus increasing interfacial peeling energy. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：9 / 12

页数：4

共 18 条

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