Mechanical and Water Vapor Barrier Properties of Bagasse Hemicellulose-based Films
Mechanical and Water Vapor Barrier Properties of Bagasse Hemicellulose-based Films
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DOI：
10.15376/biores.11.2.4226-4236
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发表时间：
2016-03
期刊：
影响因子：
1.5
通讯作者：
Y. Liu;Bing Sun;Zhong-le Wang;Y. Ni
中科院分区：
文献类型：
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作者：
Y. Liu;Bing Sun;Zhong-le Wang;Y. Ni
研究了蔗渣半纤维素的成膜性能及其在包装中的应用潜力。在各种半纤维素浓度、壳聚糖/甘油量（基于半纤维素的量）和温度下制备膜。随后通过测量它们的机械和水蒸气阻隔性能来评价这些。在较高的半纤维素浓度下获得具有较高拉伸强度的蔗渣半纤维素基膜。扫描电子显微镜图像显示基于甘蔗渣半纤维素的膜不具有尺寸小于1微米的孔，表明半纤维素与膜中存在的其它组分之间的相容性。此外，当干燥温度从25 °C增加到55 °C时，膜的拉伸强度、伸长率和水蒸气阻隔性分别增加约124%、115%和48%。这些结果表明，甘蔗渣半纤维素可以用作具有良好阻隔性和机械性能的膜的部分原料。
The film-forming ability of bagasse hemicellulose and its potential for packaging were investigated in terms of its mechanical and water vapor barrier properties. The films were prepared under various hemicellulose concentrations, chitosan/glycerol amounts (based on the amount of hemicellulose), and temperatures. These were subsequently evaluated by measurement of their mechanical and water vapor barrier properties. Bagasse hemicellulose-based films with higher tensile strengths were obtained at higher hemicellulose concentrations. Scanning electron microscope images showed that the bagasse hemicellulose-based films did not have pores less than one micron in size, suggesting compatibility between the hemicelluloses and the other components present in the films. Moreover, the tensile strength, elongation, and water vapor barrier of the film increased by approximately 124%, 115%, and 48%, respectively, when the drying temperature increased from 25 to 55 °C. These results indicate that the bagasse hemicellulose can be used as part of the raw material for films with good barrier and mechanical properties.