Biodegradation of the Films of PP, PHBV and Its Blend in Soil

被引：43
作者：
Goncalves, S. P. C. [1 ]
Martins-Franchetti, S. M. [1 ]
Chinaglia, D. L. [2 ]
机构：
[1] Sao Paulo State Univ, UNESP, Dept Biochem & Microbiol, Rio Claro, SP, Brazil
[2] Sao Paulo State Univ, UNESP, Dept Phys, Rio Claro, SP, Brazil
来源：
JOURNAL OF POLYMERS AND THE ENVIRONMENT | 2009年 / 17卷 / 04期
关键词：
Biodegradation; Blend; FTIR; DSC; X-Ray; THERMAL-ANALYSIS; POLYPROPYLENE; CRYSTALLIZATION; MORPHOLOGY;
D O I：
10.1007/s10924-009-0150-y
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Films of poly(hydroxybutyrate-co-hydroxyvalerate) (PHBV) and poly(propylene) (PP), PP/PHBV (4:1), blends were prepared by melt-pressing and investigated with respect to their microbial degradation in soil after 120 days. Biodegradation of the films was evaluated by Fourier transform infrared spectroscopy, scanning electron microscopy, differential scanning calorimetry, and X-ray diffraction. The biodegradation and/or bioerosion of the PP/PHBV blend was attributed to microbiological attack, with major changes occurring at the interphases of the homopolymers. The PHBV film was more strongly biodegraded in soil, decomposing completely in 30 days, while PP film presented changes in amorphous and interface phase, which affected the morphology.
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收藏
页码：280 / 285
页数：6
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