Biodegradation of compostable plastics in green yard-waste compost environment

被引：34

作者：

Greene, Joseph ^{[1
]}

机构：

[1] Calif State Univ Chico, Dept Mech Engn Mechatron Engn & Mfg Technol, Chico, CA 95929 USA

来源：

JOURNAL OF POLYMERS AND THE ENVIRONMENT | 2007年 / 15卷 / 04期

关键词：

biodegradable; compostable; plastics; ASTM D6400; PLA;

D O I：

10.1007/s10924-007-0068-1

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Compostable plastic materials, produced from polylactic acid (PLA), corn starch, or sugarcane, degraded in a green yard-waste compost environment. The compostable plastics claim to meet ASTM D6400 standards for biodegradation, sustainable plant growth, and eco-toxicity. Biodegradation was measured by disintegration studies over 20 weeks. The commercially available compostable products, made from PLA, sugarcane, or corn starch, biodegraded while in a commercial compost facility with other common yard waste compostable items. The PLA container, cup, and knife completely degraded in 7 weeks at a rate similar to the Avicell micro-cellulose control. The corn starch-based trash bag and sugarcane plate degraded at a similar rate as the Kraft paper control. The three materials degraded between 80% and 90% after 20 weeks.

引用

页码：269 / 273

页数：5