A_a-B_b-C_c型氢键体系的网络结构参数  

Structural Parameters of A_a-B_b-C_c Type Hydrogen Bonding Networks

作　　者：姚宁[1] 

机构地区：[1]廊坊师范学院物理与电子信息学院,河北廊坊065000

出　　处：《山西大学学报（自然科学版）》2011年第3期438-441,共4页Journal of Shanxi University(Natural Science Edition)

基　　金：河北省教育厅科学研究计划项目(Z2010162);廊坊市科学技术研究与发展指导计划项目(2007050202);廊坊师范学院科研项目(LSZQ200604)

摘　　要：利用高分子反应统计理论对氢键溶液的模型体系进行研究,给出了Aa-Bb-Cc型氢键溶液体系在凝胶点后的溶胶分子数、悬吊链节数、弹性有效链节数、有效交联点数和弹性有效链数等各结构参数的计算方案,并对A2-B3-C2型氢键溶液体系进行了相应的数值计算.结果显示溶胶中的链节数随着反应程度的增加而逐渐减少,网络中弹性有效链数、弹性有效链节数和有效交联点数都是随着反应程度的增加而逐渐增加,而悬吊链节数是先随反应程度的增加而增加,然后随反应程度的增加减小,表明网络结构在逐渐趋于紧致.进一步分析可得知给体的活性对凝胶点后的氢键体系的网络结构有一定影响,这为控制氢键网络的结构提供了可能的方法.Based on the statistical theory of polymer reaction,the hydrogen bonding solution model system is investigated.As far as the A2-B3-C2 type hydrogen bonding solution is concerned,the results show that with the increase of extent of reaction,the number of molecules in sol region decreases,while the numbers of elastic effective chains and their structural units increase as well as effective cross-linkages.Interestingly,the number of dangling structural units firstly increases and then decreases with the increase of extent of reaction.These results indicate that the structure of cluster tends to be compact with the increase of extent of reaction as expection.In addition,the non-equal reactivity of proton-donors is taken into accounted in the calculation,and the result shows that it also has significant effect on the hydrogen bonded networks.

关 键 词：氢键网络 结构参数 溶胶-凝胶相变 

分 类 号：N55[自然科学总论]