己二酸
聚酯纤维
热重分析
聚丁二酸丁二醇酯
生物降解
材料科学
差示扫描量热法
结晶度
化学工程
傅里叶变换红外光谱
凝胶渗透色谱法
高分子化学
降级(电信)
核化学
有机化学
复合材料
化学
聚合物
工程类
物理
热力学
电信
计算机科学
作者
Bo Liu,Tonghui Guan,Gang Wu,Ye Fu,Yunxuan Weng
出处
期刊:Polymers
[MDPI AG]
日期:2022-04-08
卷期号:14 (8): 1515-1515
被引量:30
标识
DOI:10.3390/polym14081515
摘要
Poly (butylene adipate-co-terephthalate) (PBAT) and poly (butylene succinate) (PBS) are polyester materials with excellent biodegradability under soil and compost conditions. However, the research on their degradation process in the marine environment is scarce. In this study, a more realistic simulation marine environment with sediment and marine organisms was developed, followed by investigation of the biodegradation behavior of PBAT and PBS mulch in it. The effect of aromatic structure, carboxyl end group content, molecular weight, and inorganic fillers on the degeneration of mulch was characterized by the changes in appearance, chemical structure, thermal properties, and crystallinity via Fourier transform infrared spectroscopy, differential scanning calorimetry, thermogravimetric analysis, gel permeation chromatography, element analysis, and X-ray photoelectron spectroscopy. The molecular weight of polyester blends decreased, while the content of the C-O bond in the composites increased, indicating that the samples indeed degraded. The degradation rate was measured with the CO2 release amount. The aliphatic polyester structure, lower molecular weight, higher carboxyl end group content, and the involvement of inorganic fillers facilitate the disintegration of polyester in the marine environment, which provides an effective method to construct materials with controllable biodegradable performance.
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