Mechanical properties of kenaf fibers and kenaf/PLA composites

被引：484

作者：

Ochi, Shinji ^{[1
]}

机构：

[1] Miyagi Natl Coll Technol, Dept Mech Engn, Natori, Miyagi 9811239, Japan

来源：

MECHANICS OF MATERIALS | 2008年 / 40卷 / 4-5期

关键词：

biodegradable composites; natural fiber; kenaf; PLA; strength; biodegradability;

D O I：

10.1016/j.mechmat.2007.10.006

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This paper describes the cultivation of kenaf and application to biodegradable composite materials. The unidirectional biodegradable composite materials were made from kenaf fibers and an emulsion-type PLA resin. Thermal analysis of kenaf fibers revealed that tensile strength of kenaf fibers decreased when kept at 180 degrees C for 60 min. Therefore, biodegradable composites were fabricated at a molding temperature of 160 degrees C. The unidirectional fiber-reinforced composites showed tensile and flexural strengths of 223 MPa and 254 MPa, respectively. Moreover, tensile and flexural strength and elastic moduli of the kenaf fiber-reinforced composites increased linearly up to a fiber content of 50%. The biodegradability of kenaf/PLA composites was examined for four weeks using a garbage-processing machine. Experimental results showed that the weight of composites decreased 38% after four weeks of composting. (c) 2007 Elsevier Ltd. All rights reserved.

引用

页码：446 / 452

页数：7

共 12 条

[11] Structural biocomposites from flax - Part I: Effect of bio-technical fibre modification on composite properties [J].

Stuart, T ;

Liu, Q ;

Hughes, M ;

McCall, RD ;

Sharma, HSS ;

Norton, A .

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING, 2006, 37 (03) :393-404

[12] THE KINETICS OF CELLULOSE FIBER DEGRADATION AND CORRELATION WITH SOME TENSILE PROPERTIES [J].

TESTA, G ;

SARDELLA, A ;

ROSSI, E ;

BOZZI, C ;

SEVES, A .

ACTA POLYMERICA, 1994, 45 (01) :47-49

← 1 2 →