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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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蓖麻油基泡沫塑料生物降解分子机制初探
DOI: 10.3724/SP.J.1105.2014.13321, PP. 276-285
Keywords: 蓖麻油,泡沫塑料,生物降解,分子机制
Abstract:
综合运用实验室模拟土埋、缸法埋置、微生物培养和脂肪酶催化水解等方法，对蓖麻油基泡沫塑料及其树脂材料的生物降解性能开展了系统研究，试图揭示此类材料生物降解过程的分子机制.土埋降解实验前后的分子结构表征初步证明了在此过程中微生物攻击的主要位点是酯基；而缸埋法测量CO2放出量的实验表明，土埋降解的最终产物主要为CO2.进一步利用培养黑曲霉的实验，证明微生物主要选择植物油分子作为其生长的碳源.在脂肪酶的作用下，蓖麻油、马来酸化蓖麻油酯及其泡沫塑料均可发生水解反应，产生脂肪酸.以上几种方法得到的结论较为吻合，不但从不同角度证实了蓖麻油基泡沫塑料具备生物降解性能，而且还初步揭示了这类材料生物降解过程的分子机制.
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