Viscoelastic properties of cross-linked polyvinyl alcohol and surface-oxidized cellulose whisker hydrogels

被引：0
作者：
Albert Mihranyan
机构：
[1] Uppsala University,Nanotechnology and Functional Materials, Department of Engineering Sciences
来源：
Cellulose | 2013年 / 20卷
关键词：
Microcrystalline cellulose; Whiskers; Polyvinyl alcohol; Cross-linking; Cryogels;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Reinforcement of polyvinyl alcohol (PVA) hydrogels was achieved by direct chemical cross-linking of surface modified microcrystalline cellulose (MCC) whiskers with PVA. In order to produce hydrogels, the MCC whiskers were first obtained by TEMPO-mediated oxidation of the cellulose substrate and ultrasonication followed by direct cross-linking to PVA (Mw 98,000) via forming acetal bonds and freeze–thawing. The viscoelastic properties of the produced hydrogels were clearly improved following the chemical cross-linking, featuring values for viscous and elastic moduli G′ and G″ on the order of 10 kPa, which is particularly interesting for biomedical orthopedic applications.
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页码：1369 / 1376
页数：7
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  • [1] Abitbol T(2011)Reinforcement with cellulose nanocrystals of poly(vinyl alcohol) hydrogels prepared by cyclic freezing and thawing Soft Matter 7 2373-1313
  • [2] Johnstone T(2011)Poly(vinyl alcohol) physical hydrogels: new vista on a long serving biomaterial Macromol Biosci 11 1293-501
  • [3] Quinn TM(2008)Rheological characterization of photopolymerized poly(vinylalcohol) hydrogels for potential use in nucleus pulposus replacement J Biomed Mat Res A 86A 494-1457
  • [4] Gray DG(2012)A review of polyvinyl alcohol and its uses in cartilage and orthopedic applications J Biomed Mater Res B Appl Biomater 100 1451-75
  • [5] Alves MH(1995)Evaluation of poly(vinyl alcohol) hydrogels as a component of hybrid artificial tissues J Mater Sci Mater Med 6 71-1925
  • [6] Jensen BEB(1992)Transparent poly(vinil alcohol) hydrogel with high water content and high strength Macromol Chem 193 1913-830
  • [7] Smith AAA(1996)Oxidation of primary alcohol groups of naturally occurring polysaccharides with 2,2,6,6-tetramethyl-1-piperidine oxoammonium ion Carbohydr Chem 15 819-780
  • [8] Zelikin AN(2007)Effects of solvent dehydration on creep resistance of poly(vinyl alcohol) hydrogel Biomaterials 28 772-1174
  • [9] Bader RA(1996)On the use of stable organic nitroxyl radicals for the oxidation of primary and secondary alcohols Synthesis 10 1153-578
  • [10] Rochefort WE(2011)Effect of stereoregularity and molecular weight on the mechanical properties of poly(vinyl alcohol) hydrogel J Appl Polym Sci 120 573-687
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