离子液体[Amim]Cl中玉米秸秆纤维素的溶解再生性能

Dissolution and regeneration of maize straw cellulose in ionic liquid Cl

以玉米秸秆为原料,在离子液体1-烯丙基-3-甲基咪唑氯盐([Amim]Cl)中制得了玉米秸秆纤维素再生膜。通过FTIR、XRD、SEM和TGA等测试方法对玉米秸秆纤维素及其再生膜进行了表征。结果表明,经过酸碱法处理的玉米秸秆纤维素可直接溶解在目标离子液体中,再生前后秸秆纤维素发生了从Ⅰ到Ⅱ的晶型转变;再生膜具有致密均匀的结构且呈现优异的热稳定性;离子液体可以多次循环利用。

Regenerated cellulose membrane was prepared from dissolved maize straw cellulose in ionic liquid 1-allyl-3-methylimidazolium chloride （[Amim]C1）. Dissolved maize straw cellulose and regenerated membrane were charaeterized by the FTIR, XRD, SEM and TGA. It was shown that the acid-base treated cellulose exhibited membrane showed recycled. maize straw could directly dissolve in ionic liquid [Amim]C1 and maize straw a crystal transformation from I to II after its regeneration. The regeneration a dense structure and good thermal stability, and ionic liquid [Amim]C1 could be