%0 Journal Article
%T 高韧性ALG-Ca/PAM双网络水凝胶的制备与表征<br>Preparation and characterization of high toughness ALG-Ca/PAM double network hydrogel
%A 孙健翔
%A 谭佩欣
%A 冯小丽
%A 容建华
%J 四川大学学报 (自然科学版)
%D 2015
%X 分别以海藻酸钙和聚丙烯酰胺为刚性和柔性凝胶网络制备具有良好力学性能的双网络水凝胶. 在刚性海藻酸钙（ALG Ca）网络形成过程中，络合在EDTA中的Ca？？？？2+？？缓慢释放后与海藻酸中古罗糖醛酸（G单元）络合形成离子交联而得到均匀的海藻酸钙凝胶，丙烯酰胺（AM）在少量化学交联剂作用下共价交联形成柔性凝胶网络（PAM）. 考察了两个网络的相对含量和交联程度对水凝胶的力学性能的影响. 结果表明，采用缓慢释放钙离子的方式，当ALG/AM质量比为0？？2，BIS/AM质量比为0？？002，Ca？？？？2+？？/COO 摩尔比为0？？6，凝胶的力学性能最佳.<br>The double network hydrogel with superior mechanical properties was prepared by rigid calcium alginate network and flexible polyacrylamide network？？During the formation of rigid calcium alginate (ALG Ca) network，Ca？？？？2+？？ released from the EDTA Ca and then complexed with guluronic acid (G Unit) in the alginate forming ionically crosslinked and uniform alginate gel？？The flexible polyacrylamide network (PAM) was formed by covalent crosslinking with the small amount of chemical cross linking agent？？The effects of relative content of the two networks and the degree of crosslinking on the mechanical properties of the hydrogel were investigated？？The results showed that in a manner of releasing calcium ions from the EDTA Ca，optimum mechanical properties of the gel are obtained when the ALG/AM mass ratio is 0？？2，BIS / AM mass ratio is 0？？002 and Ca？？？？2 +？？ / COO？？？？-？？ molar ratio is 0？？6
%K 双网络 高分子水凝胶 海藻酸钙 聚丙烯酰胺 高韧性&lt
%K br&gt
%K Double network Hydrogels Alginate Polyacrylamide High toughness
%U http://science.ijournals.cn/jsunature_cn/ch/reader/view_abstract.aspx?file_no=20153031&flag=1