| 摘要: |
| 目的 研究聚乙烯醇（ PVA）水溶性包装薄膜的生物降解性。 方法 通过培养、筛选、分离、纯化等工序， 获得其中降解效率最高的菌株， 并对PVA的降解效果进行研究。 同时通过控制变量法和正交实验，研究PVA水溶性包装薄膜组分中各种助剂对其降解性的影响。 结果 青霉菌对PVA水溶性包装薄膜的降解性效果最为明显； PVA水溶性包装薄膜组分中各种助剂含量在一定质量浓度下对PVA的降解效果有促进作用。 结论 丙三醇的质量分数为1.7%，十二烷基硫酸钠的质量分数为1.2%，吐温的质量分数为1.4%时，青霉菌对PVA降解效果最为明显。 |
| 关键词: PVA水溶性包装薄膜，青霉菌， PVA降解 |
| DOI： |
| 分类号:X798 |
| 基金项目: |
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| Study of water-soluble polyvinyl (PVA) alcohol packaging film biodegradability |
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HAO Xi-hai, PENG Xiao
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Hunan University of Technology, Zhuzhou 412007, China
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| Abstract: |
| Objective To study the biodegradable of packaging film of water-soluble polyvinyl alcohol (PVA). Methods Through the process of training, screening, isolating and purifying of different types of bacterial strains, the research is to gain the strain with the highest degradation efficiency and observe its degradation effect on PVA. The research also studies the effect of additives on the degradation of PVA packaging film with the methods of controlling variable and orthogonal experiment. Results The strain of Penicillium has the strongest ability in the degradation of water-soluble PVA packaging film. Content of various additives in the polyvinyl alcohol (PVA) water soluble packaging film has role in promoting effect on PVA degradation at a certain concentration. Conclusion The degradation effect is most obvious when the content of glycerol, sodium dodecyl sulfate and Tween are1.7%, 1.2% and1.4%, respectively. |
| Key words: water-soluble polyvinyl alcohol (PVA) packaging film Penicillium PVA degradation |
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