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CarbohydratePolymers117(2015)524–536
ContentslistsavailableatScienceDirect
Carbohydrate
Polymers
journalhomepage:www.elsevier.com/locate/carbpolReview
Glycerophosphate-basedchitosanthermosensitivehydrogels
andtheirbiomedicalapplications
HuiYunZhoua,∗,LingJuanJianga,c,PeiPeiCaoa,JunBoLia,XiGuangChenb,∗∗
aChemicalEngineering&PharmaceuticsCollege,HenanUniversityofScienceandTechnology,263KaiyuanRoad,Luoyang,471023,PRChinabCollegeofMarineLifeScience,OceanUniversityofChina,5YushanRoad,Qingdao,266003,PRChinacLiaoningHaiscoPharmaceuticalCo.,Ltd.,PRChina
articleinfo
Articlehistory:Received7May2014Receivedinrevisedform24September2014Accepted25September2014Availableonline19October2014
Chemicalcompoundsstudiedinthisarticle:Chitosan(PubChemCID:71853)␣-glycerophosphate(PubChemCID:14754)-glycerophosphate(PubChemCID:6101544)aceticacid(PubChemCID:176)lacticacid(PubChemCID:612)
Keywords:Chitosan-Glycerophosphate␣-GlycerophosphateThermosensitivehydrogelDrugdeliveryTissueengineeringabstract
Chitosanisnon-toxic,biocompatibleandbiodegradablepolysaccharidecomposedofglucosamineandderivedbydeacetylationofchitin.Chitosanthermosensitivehydrogelhasbeendevelopedtoformagelinsitu,precludingtheneedforsurgicalimplantation.Inthisreview,therecentadvancesinchitosanther-mosensitivehydrogelsbasedondifferentglycerophosphatearesummarized.Thehydrogelispreparedwithchitosanand-glycerophosphateor␣-glycerophosphatewhichisliquidatroomtemperatureandtransitsintogelastemperatureincreases.Thegelationmechanismmayinvolvemultipleinteractionsbetweenchitosan,glycerophosphate,andwater.Thesolutionbehavior,rheologicalandphysicochemicalproperties,andgelationprocessofthehydrogelareaffectednotonlybythemoleculeweight,deacetyla-tiondegree,andconcentrationofchitosan,butalsobythekindandconcentrationofglycerophosphate.Thepropertiesandthethree-dimensionalnetworksofthehydrogelofferthemwideapplicationsinbiomedicalfieldincludinglocaldrugdeliveryandtissueengineering.©2014ElsevierLtd.Allrightsreserved.
Contents
1.Introduction.........................................................................................................................................5252.Chitosan/-glycerophosphatehydrogels...........................................................................................................5252.1.Developmentprocessandgelationmechanism............................................................................................5252.2.Preparationandproperties..................................................................................................................5283.Chitosan/␣-glycerophosphatehydrogels.........................................................................................................5303.1.Developmentprocessandgelatinizemechanism...........................................................................................5303.2.Preparationandproperties..................................................................................................................5304.Biomedicalapplicationsofchitosan/glycerophosphatebasedhydrogels..........................................................................5314.1.Localdrugdelivery..........................................................................................................................5314.2.Tissueengineeringapplications.............................................................................................................5325.Conclusion...........................................................................................................................................534Acknowledgments..................................................................................................................................534References...........................................................................................................................................534
∗Correspondingauthor.Tel.:+86037964231914.∗∗Correspondingauthor.Tel.:+86053282032586;fax:+86053282032586.E-mailaddresses:hyzhou@haust.edu.cn(H.Y.Zhou),xgchen@ouc.edu.cn(X.G.Chen).
http://dx.doi.org/10.1016/j.carbpol.2014.09.0940144-8617/©2014ElsevierLtd.Allrightsreserved.H.Y.Zhouetal./CarbohydratePolymers117(2015)524–536525
1.Introduction
Hydrogelsarecomposedofthree-dimensionalpolymer
networksthathaveahighnumberofhydrophilicgroups.The
hydrogelscanabsorblargequantitiesofwaterandwillneither
disintegratenordissolve.Fullyswollenhydrogelsaresoft,pliable,
andlowinterfacialtensionwithwaterorbiologicalfluids.The
highwatercontentofhydrogelrendersitcompatiblewithmost
livingtissueandtheviscoelasticnatureofhydrogelminimizes
damagetothesurroundingtissuewhenitisimplantedinthe