| PLA在受控堆肥条件下的生物降解行为研究 |
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| 引用本文： | 扈蓉,陈丽琼,黄开胜,李思源. PLA在受控堆肥条件下的生物降解行为研究[J]. 塑料科技, 2012, 40(8): 68-71 |
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| 作者姓名： | 扈蓉 陈丽琼 黄开胜 李思源 |
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| 作者单位： | 1. 哈尔滨工业大学深圳研究生院,广东深圳518055;深圳市计量质量检测研究院,广东深圳518131
2. 深圳市计量质量检测研究院,广东深圳,518131 |
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| 摘 要： | 依据ISO 14855的检测方法,研究了聚乳酸(PLA)在受控堆肥条件下的生物降解性能,结果表明:PLA具有良好的生物降解性。在培养土提取液中,以蛋白酶K对PLA膜进行降解,显微镜观察发现,PLA膜表面逐渐被蛋白酶侵蚀;红外光谱研究表明,PLA膜在降解前后的分子结构没有发生很大变化。
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| 关 键 词： | 聚乳酸 堆肥 生物降解 蛋白酶K |
Study on the Biodegradation of PLA under Controlled Composting Conditions |
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| Hu Rong , Chen Liqiong , Huang Kaisheng , Li Siyuan. Study on the Biodegradation of PLA under Controlled Composting Conditions[J]. Plastics Science and Technology, 2012, 40(8): 68-71 |
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| Authors: | Hu Rong Chen Liqiong Huang Kaisheng Li Siyuan |
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| Affiliation: | 1 Harbin Institute of Technology Shenzhen Graduate School,Shenzhen 518055,China 2 Shenzhen Academy of Metrology and Quality Inspection,Shenzhen 518131,China |
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| Abstract: | The biodegradation of polylactic acid(PLA) was studied under controlled composting conditions according to the method of ISO 14855.The results show that: PLA has good biodegradability.The polymer film biodegraded in a compost extract containing proteinase K was investigated.The optical microscopic photographs show that: the surface of PLA film is eroded gradually by proteinase;the infrared spectroscopy results show that: the chemical structure of PLA film before and after biodegraded has no change. |
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| Keywords: | Polylactic acid Compost Biodegradation Proteinase K |
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