首页 | 本学科首页   官方微博 | 高级检索  
     


Physical and Thermal Analysis of the Degradation of Poly(3-Hydroxybutyrate-co-4-Hydroxybutyrate) Coated Paper in a Constructed Soil Medium
Authors:Koffi L. Dagnon  Christopher Thellen  Jo Ann Ratto  Nandika A. D’Souza
Affiliation:(1) Department of Materials Science and Engineering, University of North Texas, P.O. Box 305310, Denton, TX 76203, USA;(2) Present address: Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Rd, Cleveland, OH 44106, USA;(3) Advanced Materials Engineering Team, U.S. Army Natick Soldier Research, Development and Engineering Center, Natick, MA, USA;
Abstract:The degradation of poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P(3HB-co-4HB)) coated brown Kraft paper and its components in a constructed soil environment was investigated. Soil burial tests were carried out over 8 weeks. Weight loss measurements, photographic analysis, environmental scanning electron microscopy (ESEM), dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC) were conducted to assess the physical, structural, mechanical and thermal behavior before and after the soil burial test. Paper showed the highest physical degradation and weight loss. With respect to the control samples, the stiffness of the partially degraded samples decreased. The overall crystallinity of the biopolymer and the coated paper was affected significantly by burial. The pure biopolymer’s weight loss was substantially enhanced when coated on paper. This result reveals a possible increased microbial population in the coated paper relative to the pure biopolymer.
Keywords:
本文献已被 SpringerLink 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号