金属离子对纤维素碱性降解影响的初步研究  

Elementary Study on the Effect of Metal Ions on the Alkaline Degradation of Cellulose

作　　者：丁文慧[1] 李群[1] 

机构地区：[1]天津市制浆造纸重点实验室天津科技大学材料科学与化学工程学院,天津300457

出　　处：《天津科技大学学报》2011年第1期27-30,共4页Journal of Tianjin University of Science & Technology

基　　金：国家自然科学基金资助项目(20676101)

摘　　要：以纤维素二糖、微晶纤维素及脱脂棉作为纤维素模型物,分别考察K+、Mg2+和Ca2+对纤维素碱性降解性能的影响.结果表明:金属离子的种类、用量及反应时间均会影响纤维素的碱性降解.K+对纤维素碱性降解有促进作用,Mg2+和Ca2+则会抑制纤维素碱性降解反应;并且随着金属离子用量的增加及反应时间的延长,K+的促进作用及Mg2+、Ca2+的抑制作用愈加明显.With cellobiose,microcrystal cellulose（MCC）and absorbent cotton cellulose as model materials of celluloset,he effect of K＋,Mg2＋,Ca2＋ on the cellulose alkaline degradation in different conditions was studied.The results showed that the types,dosages and reaction time of metal ions had a great effect on the alkaline degradation of cellulose.K＋ promoted cellulose alkaline degradation while Mg2＋ and Ca2＋ inhibited the alkaline degradation of cellulose.With the increase of the dosage of metal ions and the prolonging of reaction time,the promotion function of K＋ and the inhibition effects of Mg2＋ and Ca2＋ on the alkaline degradation of cellulose became more significant.

关 键 词：金属离子 纤维素 碱性降解 

分 类 号：TS711[轻工技术与工程—制浆造纸工程]