High-strength nanocomposite based on fibrillated chemi-thermomechanical pulp

被引：64

作者：

Abe, Kentaro ^{[1
]}

Nakatsubo, Fumiaki ^{[2
]}

Yano, Hiroyuki ^{[1
]}

机构：

[1] Kyoto Univ, Res Inst Sustainable Humanosphere, Uji, Kyoto, Japan

[2] Kyoto Univ, Grad Sch Agr, Div Forest & Biomat Sci, Uji, Kyoto, Japan

来源：

COMPOSITES SCIENCE AND TECHNOLOGY | 2009年 / 69卷 / 14期

关键词：

Fibers; Nanocomposite; Cellulose microfibril; Mechanical properties; Scanning electron microscopy (SEM); CELLULOSE NANOFIBERS; COMPOSITES; POLYMERS; LIGNIN;

D O I：

10.1016/j.compscitech.2009.06.015

中图分类号：

TB33 [复合材料];

学科分类号：

摘要：

The incompatibility between cellulose fibers and hydrophobic polymers has presented a major obstacle for the fabrication of composites and nanocomposites. In this study, we applied a one-time grinder treatment to disintegrate chemi-thermomechanical pulp (CTMP) and obtained micro- to nano-meter-sized lamellar or fibrous fragments. The CTMP fragments were composed of cellulose microfibrils with high aspect ratios encased in matrix substances including hydrophobic lignin. Furthermore, we produced compression-molded products from the CTMP fragments by thermally plasticizing lignin without any adhesives or resins. The molded products pressed at 180 degrees C exhibited a plastic-like gloss on the surface and a high bending strength, 221 MPa, which greatly exceeded that of the conventional plant-based binderless boards. The molded products produced here are a novel form of ideal cellulose nanocomposite, which exploited the inherent compatibility between cellulose microfibrils and matrix substances present in CTMP fragments. (C) 2009 Elsevier Ltd. All rights reserved.

引用

页码：2434 / 2437

页数：4

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