文章摘要
杨连利.聚乙烯醇-海藻酸钠/累托石纳米复合膜结构及性能研究[J].包装工程,2011,32(3):5-8.
YANG Lian-li.Study of Structure and Property of Polyvinyl Alcohol-sodium Alginate/Na-Rectorite Nanofilm[J].Packaging Engineering,2011,32(3):5-8.
聚乙烯醇-海藻酸钠/累托石纳米复合膜结构及性能研究
Study of Structure and Property of Polyvinyl Alcohol-sodium Alginate/Na-Rectorite Nanofilm
投稿时间:2010-10-08  修订日期:2011-02-10
DOI:
中文关键词: 海藻酸钠  聚乙烯醇  钠化累托石  插层机理  性能
英文关键词: SA  PVA  Na+REC  intercalation mechanism  property
基金项目:陕西省教育厅资助项目 (2010JK900) ; 咸阳师范学院资助项目 (10XSYK103)
作者单位
杨连利 咸阳 师范学院, 咸阳 712000 
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中文摘要:
      用水溶液法制备环保型聚乙烯醇(PVA)-海藻酸钠(SA)/钠化累托石(N a +REC) 复合膜,通过 XRD 及TEM 分析了复合膜结构及插层机理,研究其透光性、力学性能、气液阻隔性及热性能。 实验结果表明,添加少量 PVA 可与 SA 和 N a +REC 形成插层纳米复合膜,其中 PVA 添加量为 SA 质量的1 0%时,所制得复合膜PVA 1 0 - SA /N a +REC 2插层效果最好,与SA /N a +REC 2复合膜相比,拉伸强度提高4 2.2%,断裂伸长率提高3 5.4%,在3 6~2 3 0 ℃范围内失重率降低3.4 8%,且有良好的透光性及汽液阻隔性。
英文摘要:
      Polyvinyl alcohol (PVA)-sodium alginate (SA)/Na-rectorite (Na+REC) nanofilm were prepared by water solution processing. The structure and intercalation mechanism were analyzed by using XRD and TEM. The transmittance, mechanical properties, gas or liquid barrier properties as well as thermal properties were systematically investigated. It was found that introduction of a small amount of PVA can show evident positive effect on intercalation; the intercalation effect and properties of composites of 10% PVA are optimal; the tensile strength, elongation at break for PVA10-SA/Na+REC2 are 42.2%, 35.4% higher than those of SA/Na+REC2, respectively. The weight lose of the composite sample in 36 ℃ to 230 ℃ range is 3.48% lower than that of SA/Na+REC2 and the film have excellent transmission of light and gas or liquid barrier properties.
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