Blend films of O‐carboxymethyl chitosan and cellulose in N‐methylmorpholine‐N‐oxide monohydrate
Blend films of O‐carboxymethyl chitosan and cellulose in N‐methylmorpholine‐N‐oxide monohydrate
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DOI：
10.1002/app.24385
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发表时间：
2006-12
影响因子：
3
通讯作者：
Xupin Zhuang;Xiwang Liu
中科院分区：
文献类型：
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作者：
Xupin Zhuang;Xiwang Liu
为引入N-甲基吗啉-N-氧化物(NMMO)法制备抗菌Lyocell纤维，制备了O-羧甲基壳聚糖(O-CMCs)与纤维素共混膜。将表面平均直径为2.24μm的邻甲基壳聚糖水悬浮液与纤维素共混制得水合物。用该共混液制备了不同O-CMCS含量的共混膜。扫描电子显微镜证实，O-CMCs留在粒子中的纤维素膜中。当O-CMCS含量小于5%时，共混膜的力学性能几乎没有增加，而当O-CMCS含量超过8%时，共混膜的力学性能急剧下降。因此，最佳的O-CMCS含量可以提供良好的抗菌作用和力学性能的结合。
To introduce N-methylmorpholine-N-oxide (NMMO) process to prepare antibacterial lyocell fiber, the blend films of O-carboxymethyl chitosan (O-CMCS) and cellulose were prepared. O-CMCS in aqueous suspension with particles having a surface mean diameter of 2.24 μm was blended with cellulose in NMMO hydrate. The blend films with different O-CMCS content were prepared with the blend solutions. SEM confirmed that O-CMCS remained within the cellulose film in the particle. The mechanical properties of the blend films show little increased value when O-CMCS was less 5%; however, it decreased sharply when O-CMCS was over 8%. Thus, the optimum O-CMCS content may give a good combination of antibacterial action and mechanical properties.