以丙烯酰胺(AM)和海藻酸钠(SA)为功能单体,N,N’-亚甲基双丙烯酰胺(MBA)和CaCl2为交联剂,制备得到化学/离子复合交联术凝胶(CIC型),同时合成出化学交联(CC)、离子交联(IC)和半互穿化学交联(SCC)型水凝胶作为对比,采用紫外可见分光光度计、场发射扫描电镜、称重仪和单纤维强力机对4种水凝胶的透光度、孔洞结构、溶胀行为和力学性能进行了研究.结果表明,CC型水凝胶的吸光度值为0.049,透光性最好,透光性由好及坏顺序为CC＞ SCC＞ CIC＞IC;CIC方式制得的水凝胶吸光度为0.621;最大断裂应力为158.9 kPa,分别是CC型和SCC型水凝胶的5.17倍和1.96倍;最大拉伸倍数和最大溶胀比(MSR)为4.29 g/g和13.70 g/g,分别是IC型水凝胶的9.77倍和12.38倍;场发射扫描电镜结果表明CIC水凝胶具有海绵状规整的微孔结构,是用于替代肌腱组织的理想材料.
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