Effect of Preparation Methods on Mechanical Properties of PVA/HA Composite Hydrogel

被引:49
|
作者
Zhang, Dekun [1 ]
Duan, Junjie [1 ]
Wang, Dagang [2 ]
Ge, Shirong [2 ]
机构
[1] China Univ Min & Technol, Sch Mat Sci & Engn, Xuzhou 221116, Peoples R China
[2] China Univ Min & Technol, Sch Mech & Elect Engn, Xuzhou 221116, Peoples R China
基金
中国国家自然科学基金;
关键词
composite hydrogel; HA contents; freezing-thawing cycles; static properties; dynamic properties; POLY(VINYL ALCOHOL); CROSS-LINKING; CARTILAGE; JOINT;
D O I
10.1016/S1672-6529(10)60246-6
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Poly(vinyl alcohol) (PVA) / hydroxyapatite (HA) composite hydrogel specimens were prepared with 15% PVA and 1%, 2%, 3%, 4% and 5% HA by repeated freezing-thawing. The tests of static and dynamic mechanical properties were carried out to discuss the influence of different contents of HA and freezing-thawing cycles on the mechanical properties of PVA/HA composite hydrogel. The results of static mechanical tests showed that the PVA/HA composite hydrogel with 3% and nine freezing-thawing cycles had excellent stress relaxation properties, higher relaxation ratio, lower stress equilibrium value and presented better properties of creep and recovery. The results of dynamic mechanical test showed that the PVA/HA composite hydrogel with nine freezing-thawing cycles had higher storage modulus and loss modulus. so was the PVA/HA composite hydrogel with 3% HA.
引用
收藏
页码:235 / 243
页数:9
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