Qi Xian-Ming, Liu Shi-Yun, Chu Fang-Bing, Pang Shuai, Liang Yan-Ru, Guan Ying, Peng Feng, Sun Run-Cang
Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China.
School of Forestry and Landscape Architecture, Anhui Agricultural University, Hefei 230036, China.
Materials (Basel). 2015 Dec 23;9(1):4. doi: 10.3390/ma9010004.
Utilization of hemicelluloses from biomass energy is an important approach to explore renewable resources. A convenient, quick, and inexpensive method for the preparation of blended films from quaternized hemicelluloses (QH) and carboxymethyl cellulose (CMC) was introduced into this study. QH and CMC solution were first mixed to form homogeneous suspension, and then were dried under vacuum to fabricate the blended films. The FT-IR and XRD results indicated that the linkage between QH and CMC was due to the hydrogen bonding and electrostatic interaction. From the results of mechanical properties and water vapor permeability (WVP), the tensile strength of the blended films increased with the QH/CMC content ratio increasing in appropriate range, and the WVP of the blended films decreased. The maximum value of tensile strength of blend film achieved was 27.4 MPa. In addition, the transmittances of the blended films increased with the decreasing of QH/CMC content ratio. When the weight ratio (QH: CMC) was 1:1.5, the blend film showed the best light transmittance (45%). All the results suggested that the blended films could be used in areas of application in the coating and packaging fields from the good tensile strength, transmittance, and low WVP.
利用生物质能源中的半纤维素是探索可再生资源的重要途径。本研究引入了一种便捷、快速且廉价的方法，用于制备季铵化半纤维素（QH）和羧甲基纤维素（CMC）的共混膜。首先将QH和CMC溶液混合形成均匀悬浮液，然后在真空下干燥以制备共混膜。傅里叶变换红外光谱（FT-IR）和X射线衍射（XRD）结果表明，QH与CMC之间的连接是由于氢键和静电相互作用。从力学性能和水蒸气透过率（WVP）的结果来看，在适当范围内，共混膜的拉伸强度随QH/CMC含量比的增加而提高，而共混膜的WVP则降低。共混膜的拉伸强度最大值达到27.4MPa。此外，共混膜的透光率随QH/CMC含量比的降低而增加。当重量比（QH:CMC）为1:1.5时，共混膜表现出最佳的透光率（45%）。所有结果表明，由于具有良好的拉伸强度、透光率和低WVP，共混膜可用于涂层和包装领域的应用。
