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文摘
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以离子液体为微晶纤维素(MCC)和聚乙烯醇(PVA)的共溶剂,采用液-固相转变法制备MCC/ PVA共混膜。共混膜经红外光谱(FT-IR)、扫描电镜(SEM)、热重分析(TGA)、接触角测试和拉力试验等表征。FT-IR和SEM分析结果表明,两组分间有很好的相容性,用甲醇做沉淀剂可以制备出孔径均一的纳米共混膜。TGA和力学性能测试结果表明,共混膜具有良好的综合热稳定性、拉伸强度及尺寸稳定性。 |
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其他语种文摘
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A series of microcrystalline cellulose (MCC)/polyvinyl alcohol (PVA) blend membranes were prepared by liquid solid phase inversion method from ionic liquid. The blend membranes were characterized by FT-IR, SEM, TGA and mechanical properties measurement. The FT-IR and SEM experimental results show that thereare good compatibility between MCC and PVA, and the blend membranes have mean nanometer pore-size distribution by methanol. The blend membrane still exhibits lower degree of swelling when PVA content reaches 41.2%. The elongation at break of the blend membrane sharply increases from 20.9% to 71.8% when the mass ratio of MCC/PVA is 10/7, while the tensile strength decreases slightly. Moreover, theblend membranes have good thermal stability. |
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来源
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高分子材料科学与工程
,2013,29(6):157-159,164 【核心库】
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关键词
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纤维素
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聚乙烯醇
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离子液体
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共混膜
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液-固相转变法
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地址
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1.
河北大学化学与环境科学学院, 河北, 保定, 071002
2.
中国科学院化学研究所, 北京, 071002
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-7555 |
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学科
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化学工业 |
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基金
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河北大学博士基金
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保定市科学技术研究与发展指导计划项目
;
国家教育部高等学校博士学科点专项科研基金
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文献收藏号
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CSCD:4867627
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