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20127164BME&ClinMed,July2012,Vol.16,No.4-PVA1,2,1,2,3,1,2,1,2:2012-05-3117:18:··:-(PVA)。(0%、5%、10%、15%、20%)5-PVA,,/PVA。-PVA。-PVA;(DSC)2,65℃~72℃、222℃~225℃;;X(XRD)20°;24g/g;1400g/(m2·24h);,15d80%;0~1。-PVA,。:;;;:R318.01:1009-7090(2012)04-0309-05:A:1.,610065;2.,610043;3.,610065:2012-03-11;:2012-03-29:(1986-),,,,。:(10GGYB345SW-023):(1956-),,,,,。E-mail:dwh5607@263.net。C,。Preparationofcollagen-polyvinylalcoholcompositehydrogelsWUXia1,2,DANNian-hua1,2,LINHai3,HUYang1,2,DANWei-hua1,2(1.DepartmentofBiomassandLeatherEngineering,SichuanUniversity,Chengdu610065,Sichuan,China;2.TheResearchCenterofBiomedicineEngineering,SichuanUniversity,Chengdu610043,Sichuan,China;3.TheNationalResearchCenterofBiomaterialsEngineering,Chengdu610065,Sichuan,China)Correspondingauthor:DANWei-hua.E-mail:dwh5607@263.netAbstract:ObjectiveToobtaincollagen-polyvinylalcohol(PVA)compositehydrogelsbyrepeatedfreezing-thawingprocedure.MethodsTheoptimumproportionofcollagen/PVAwasachievedbypreparing5groupsofhydrogelsamples(0%,5%,10%,15%,20%)withdifferentratiosofcollagentoPVAaswellascharacterizingthephysicalandchemicalfeatures.Thecytotoxicityoftheoptimumcollagen/PVAcompositehydrogelwasthenevaluated.ResultsAmidebandsweredetectedinthecollagen/PVAcompositehydrogelaccordingtotheinfra-redspectra,while2absorptionpeaksappearedindifferentialscanningcalorimetry(DSC)curvesthatwere65℃-72℃and222℃-225℃,respectively.Scanningelectronmicroscope(SEM)demonstratedtheporousstructureofthehydrogel,andX-raydiffraction(XRD)showedapeakat20°.Themaximalswellingcapacitywas24g/gandthemaximumwatervaportransmissionratewas1400g/(m2·24h).Thedegradationpercentagereachedto80%in15days,hadgooddegradationability.Thecytotoxicityscoreofthebiomaterialwasgrade0-1.ConclusionAsakindofsurfacewounddressing,thecollagen/PVAcompositehydrogelisexhibitingprosperingapplicationprospects,thehealingabilityandotherbiocompatibilitywillbeevaluatedinthefuture.Keywords:collagen;hydrogels;biologicalproperty;dressing,。,,,[1],,。(polyvinylalcohol,PVA)。,[2]。,,。PVA,、,,。11.1:(84-1A)(309--DOI:10.13339/j.cnki.sglc.2012.04.02420127164BME&ClinMed,July2012,Vol.16,No.4);(FA2004N)();(Freeze6)(Labconco);(scanningelectronmicroscope,SEM)();(MultimomodeTMSPA)(Veeco);CO2(SANYO);(BIO.RAD)。:();PVA(1977)();1-(3-)-3-[1-ethyl-3-(3-dimethylaminopropyl)carbo-diimidehydrochloride,EDC]();N-(N-hydroxysuccinimide,NHS)();L929();();(methylthiazolyltetrazolium,MTT)(Amresco)。1.21.2.1-PVA1.2.1.1PVA[3]PVA5,60℃,2%(triethylamine,TEA),75℃;PVA,4.5h。,,20%NaOH,PVA;、0.2mol/LHCl、,。1.2.1.2-PVAPVA,,10%;60℃,90℃,。NHS,EDC;1,,25℃±1℃,4.5h;,,。20g,9cm,10~12h,1~2h,10,。1.2.2-PVA(1):,2cm-1,16。(2)(differentialscanningcalo-rimetry,DSC):-20℃~250℃,。(3)SEM:SEM。(4)X(X-raydiffraction,XRD):2θ5°~40°。(5):,10mL,25℃,20min,,,;,,3。(1),-PVA,-PVA,:SR=Wt-W0W0(1):Wtt;W0。(6):YY-T0471.2-20042。(7):-PVA,,10mL10%H2O2,37℃,3;3d1,2d1,,,60℃,,(2),(%)=(-)/×100%。(2)1.2.3-PVA:MTT[4]-PVA。-PVA1640,37℃、5%CO224h。L929,,96,37℃、5%CO224h。,(6),1646,。1、2、3d,MTT(20μL),37℃、5%1-PVATable1Componentratioofeachcollagen-PVAcompositehydrogel/%C00C55C1010C1515C2020310--20127164BME&ClinMed,July2012,Vol.16,No.4CO24h,,200μL10min。490nm,(3)(relativeprolif-erationrate,RGR),RGR(%)=×100%(3)22.1-PVA2.1.1-PVA-PVA,,,。1-PVA,1,-PVAPVA,。13400cm-1-OH,1653~1090cm-1,,。2.1.22,-PVA2,165℃~72℃,;2222℃~225℃,-PVAPVA。-PVA。2.1.33,-PVA,10,C20-PVA,24g/g。,,、。,-PVA,,-PVA。,-PVA。2.1.44,-PVA,50~100μm。,,。,。2.1.5X-PVAXRD,20°(5),[3,5]。,X;-PVAPVA,,,-PVAXRDPVA。2.1.6-PVA37℃,10%,(6),1400g/(m2·24h)。2.1.7-PVA15d6664626058565452504846444240/%/cm-1300020001000C5C0C10C15C202826242220181614121086420Q/g/g01503004506007509001050120013501500165018001950/minC20C10C15C5C0DSC/mV/mg邙0.0-0.2-0.4-0.6-0.8-1.0-1.2/℃050100150200:72.1℃:71.9℃:65.6℃:77.6℃:223.6℃:225.0℃:226.6℃:221.9℃[1][2][1]C5,sd1[2]C10,sd1[3]C15,sd1[4]C20,sd1DSCDSCDSCDSC3-PVAFigure3Swellingkineticsfittingcurvesofcollagen-PVAcompositehydrogels2-PVADSCFigure2DSCcurvesofcollagen-PVAcompositehydrogels1-PVAFigure1Infra-redspectraofcollagen-PVAcompositehydrogels311--20127164BME&ClinMed,July2012,Vol.16,No.47。7,8d,,40%~50%;,,,12C0、C15C20-PVA80%,15C10-PVA80%。2.2-PVA,,,。RGR,,100%,1,,(2)。,[6]。,,,,-PVARGR,(8)。3、,,、[7]。10090807060504030/%/d2468101214C0C5C10C15C202000160012008004000/g/(m2·24h)C0C5C10C15C204003002001000/2θ510152025303540C10C0C202RGRTable2RGRcytotoxicitybetweenexperimentalandcontrolgroupRGR/%1d3d5d100.00100.00100.00—C0107.17117.9396.89C10107.49131.68119.325-PVAXRDFigure5XRDpatternsofcollagen-PVAcompositehydrogels4-PVASEM(A:C10SEM;B:C20SEM)Figure4Imagesofcollagen-PVAcompositehydrogelsbySEM(A:C10;B:C20)6-PVAFigure6Watervaportransmissionrateofcollagen-PVAcompositehydrogels7-PVAH2O2Figure7Degradationcurveofcollagen-PVAcompositehydrog-elsinH2O2solutionAB312--20127164BME&ClinMed,July2012,Vol.16,No.4,。,[8]。PVA:,;,;,,;,;[9]。PVA,:-PVA,PVA,PVA,,。,。PVA,。-PVA。,,。,。,C101400g/(m2·24h),-PVA。,。:C10C0RGR,。-PVAL929,RGR,,,,。-PVA,,。:[1]QINYi-min.Functionwounddressings[M].Beijing:ChinaText-ile&ApparelPress,2007:17-19.[.[M].:,2007:17-19.][2]YoshiiaF,ZhanshanbY,IsobeeK,
本文标题:胶原-PVA复合水凝胶的制备-吴霞
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