| 聚乙烯醇缓释膜缓释性能的初步研究 |
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| 引用本文： | 郝喜海,史翠平,孙淼,李慧敏. 聚乙烯醇缓释膜缓释性能的初步研究[J]. 塑料科技, 2012, 40(1): 76-79 |
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| 作者姓名： | 郝喜海 史翠平 孙淼 李慧敏 |
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| 作者单位： | 湖南工业大学包装与材料工程学院,湖南株洲,412007 |
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| 摘 要： | 采用部分醇解级和完全醇解级的聚乙烯醇(PVA)混合物制备了PVA缓释膜,研究了缓释膜的缓释机理。以I(1788)含量的增大,缓释膜的缓释速率逐渐增大;缓释膜的厚度越小,其缓释速率越大;当PVA BM-I(1788)蒸馏水为载体,初步测定了PVA缓释膜的透水速率。探讨了PVA缓释膜缓释速率的影响因素,测定了PVA缓释膜的溶胀率以及溶解失重率,并对其稳定性进行了初步研究。结果表明:随着部分醇解级PVA BM-含量为30%时,缓释膜的溶胀率达到最大;缓释膜的稳定性良好,能够较长时间保持其缓释性能。
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| 关 键 词： | 聚乙烯醇 缓释膜 缓释机理 稳定性 |
Preliminary Study on Slow-release Performance of PVA Slowrelease Film |
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| Hao Xihai , Shi Cuiping , Sun Miao , Li Huimin. Preliminary Study on Slow-release Performance of PVA Slowrelease Film[J]. Plastics Science and Technology, 2012, 40(1): 76-79 |
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| Authors: | Hao Xihai Shi Cuiping Sun Miao Li Huimin |
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| Affiliation: | College of Packaging and Materials Engineering,Hunan University of Technology,Zhuzhou 42007,China |
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| Abstract: | The PVA slow-release film was prepared from the blend of partial alcoholysis PVA and complete alcoholysis PVA.The slow-release mechanism of the slow-release film was studied.The water permeation rate of PVA slow-release film was preliminarily determined by taking distilled water as carrier.The influence factors of slow-release rate of PVA slow-release film were discussed.The swelling rate and soluble weight loss rate of PVA slow-release film were also determined.The stability of PVA slow-release film was preliminarily investigated.The results show that the slow-release rate increases with the increase of the content of partial alcoholysis PVA BM-I(1788);the slow-release rate increases with the decrease of film thickness;when PVA BM-I(1788) content is 30%,the swelling rate of the slow-release film reaches the maximum value;PVA slow-release film has good stability,the slow-release property of which can be kept for a long time. |
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| Keywords: | PVA Slow-release film Slow-release mechanism Stability |
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