| 化学合成聚3-羟基丁酸酯薄膜的生物降解性 |
| 摘要点击 727 全文点击 1360 投稿时间：1997-12-27 |
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| 中文关键词 化学合成 聚3-羟基丁酸酯 生物降解性 降解塑料 担子菌 |
| 英文关键词 chemical synthesis poly(3-hydroxybutyrate) biodegradation degradable plastics basidiomycetes |
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| 中文摘要 |
| 利用土壤埋藏、海水降解、活性污泥及高等真菌降解实验对化学法合成的聚3-羟基丁酸酯(PHB)薄膜进行了生物降解性研究。结果表明,降解PHB薄膜的微生物分布比较广泛；水解作用和酸解作用在PHB生物降解过程中对其失重率影响很小(3.5%以下);液态摇动培养不利于木素降解菌云芝5.48对PHB薄膜的降解(培养至第20d,PHB12和PHB27仅降解17.8%和13.5%);PHB薄膜的结晶度比分子量对其生物降解性影响更大,结晶度增加则生物降解性降低. |
| 英文摘要 |
| The biodegradation of chemically synthesized poly(3-hydroxybutyrate) (PHB) films was studied by the basidiomycetes,activated sludge,soil,and seawater experiments.It was found that PHB-degrading microorganisms are widely distributed in natural environments;hydrolytic and acidic degradation shows little influence on biodegradation rate of PHB film (below 3.5%);the shake culture is unfavourable to the biodegradation of PHB12 and PHB27 for Coriolus versicolor 5.48(degraded 17.8% and 13.5% at the 20th day respectively);the biodegradability of PHB film decreases with an increase in its crystallinity,which has a stronger influence over its biodegradation than the molecular weight. |
