醇对瓜尔胶高分子水溶液黏度的影响  

Effect of Alcohol upon the Viscosity of Polymer Guar Gum in Aqueous Solution

作　　者：张玲[1] 杨海洋[1] 李化真[1] 朱平平[1] 何平笙[1] 

机构地区：[1]中国科学技术大学高分子科学与工程系,安徽合肥230026

出　　处：《高分子材料科学与工程》2011年第5期39-42,共4页Polymer Materials Science & Engineering

基　　金：高等学校博士学科点专项基金(20040358018)资助课题

摘　　要：测定了异丙醇和乙二醇对瓜尔胶高分子水溶液黏度的影响,发现随着异丙醇的加入,瓜尔胶高分子水溶液的特性黏数逐渐减小,Huggins相互作用参数会逐渐增加;与此相反,随着乙二醇的加入,瓜尔胶高分子水溶液的特性黏数逐渐增加,Huggins相互作用参数却逐渐减小。醇和瓜尔胶高分子之间缔合导致高分子链疏水性质和空间位阻效应的改变,是异丙醇和乙二醇对瓜尔胶高分子水溶液黏度行为影响显著不同的根本原因。Effect of both isopropyl alcohol and ethylene glycol upon the viscosity of polymer guar gum in aqueous solution was measured.It has been found that with the addition of isopropyl alcohol into guar gum solution,the intrinsic viscosity of solution decreases gradually whereas the Huggins parameter kH increases successively.On the other hand,by adding ethylene glycol into guar gum solution,the intrinsic viscosity of solution increases gradually whereas the Huggins parameter kH decreases successively.Our experimental results indicate that both isopropyl alcohol and ethylene glycol associate greatly with guar gum in solution.However,the effect of either isopropyl alcohol or ethylene glycol upon the hydrophobic property and steric hindrance of guar gum is different.As a result,the effect of either isopropyl alcohol or ethylene glycol upon the viscosity behavior of guar gum is different.

关 键 词：瓜尔胶高分子 特性黏数 异丙醇 乙二醇 Huggins相互作用参数 

分 类 号：O631.4[理学—高分子化学]