The composite hydrogels of polyvinyl alcohol-gellan gum-Ca(2+) with improved network structure and mechanical property.
The composite hydrogels of polyvinyl alcohol (PVA) and gellan gum (GG) are of interesting in the biomaterials application. To improve the structure and mechanical property, in this work, Ca(2+) ion was introduced to crosslink the polymer chain, and the PVA-GG-Ca(2+) hydrogel was formed. By analyzing its structure, mechanical properties, swelling and dehydration kinetics, the effect of molecular interaction on hydrogel structure and properties have been observed. Our result indicates that, as GG is added to hydrogel network, the role of Ca(2+) ion is stand out, it reorganizes the network structure, enhances the mechanical properties, and strengthens the electrolytic and hydrogen bonding interactions in PVA-GG-Ca(2+) hydrogels. These observations will benefit the development of hydrogels in biomaterials application.
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
Fei
F
Wang
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China.
Ying
Y
Wen
College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, China. Electronic address: tcbai@suda.edu.cn.
Tongchun
T
Bai
D001672:Biocompatible Materials / Q000737:chemistry; D002118:Calcium / Q000737:chemistry*; D020100:Hydrogels / Q000737:chemistry*; D006860:Hydrogen Bonding; D007477:Ions / Q000737:chemistry; D011135:Polysaccharides, Bacterial / Q000737:chemistry*; D011142:Polyvinyl Alcohol / Q000737:chemistry*; D012212:Rheology; D017550:Spectroscopy, Fourier Transform Infrared; D013718:Tensile Strength; D014867:Water / Q000737:chemistry; D014961:X-Ray Diffraction
D001672:Biocompatible Materials; D020100:Hydrogels; D007477:Ions; D011135:Polysaccharides, Bacterial; D014867:Water; C048288:gellan gum; D011142:Polyvinyl Alcohol; D002118:Calcium
Dehydration kinetics; Gellan gum; Mechanical property; Polyvinyl alcohol; Structure; Swelling