简介：自己组装在自然占优势并且从自然学习将导致biofunctional材料。由弹力素的蛋白质启发了，我们在忍受重复VPGAG的肽的弹力素的超分子的hydrogel上在这研究报导了。粘弹性性质，nanostructures的形态学，并且在自我装配的nanostructure的芳香的叠被电流测定，传播电子显微镜(TEM)，和荧光显微镜分别地描绘。gelator的biocompatibility被MTT试金也证明。尽管超分子的hydrogel没能展出象弹力素一样的高弹性，thixotropichydrogel可能在房间文化的领域里为应用有潜力，控制药版本，等等。

简介：柱体hydrogel在几何学简单并且容易综合，广泛地因此被用来调查hydrogel的胀大/缩小的不稳定性，许多不稳定性模式在文学被积累。不过，这种唯一的配置的不稳定性模式形成的机制充分远离是被理解。我们使用了并且延长，并且执行了抑制柱体hydrogel的胀大导致稳定性的线性不安分析聚合物胶化的最近发达的非线性的理论进圆柱的坐标。我们导出压力和联系平衡方程的增长明确的表达。我们为不稳定性的发作获得了批评条件并且在hydrogel的稳定性图上在细节探查了各种各样的参数的效果。稳定性图的变化的物理意思也被解释。

简介：(丙烯酸的酸)Chitosan-poly，hydrogel与Eu3+结合了被激进的溶液聚合准备。可被细菌破坏的chitosan，N，N-methylen-diacrylamide，和钾过硫酸盐分别地被用作基本材料，cross-linking代理人，和开始者。结构和hydrogel的热性质被红外线的spectrometry，X光检查衍射，扫描电子显微镜学，和微分扫描热量测定描绘。肿的性质并且荧光灯性能也被描绘。结果证明稀土元素在聚合以后由于化学契约的形成在hydrogel介绍了唯一的分发。hydrogel的玻璃转变温度显著地减少了，它可能更加拓宽它的有弹性的申请的范围。而且，特征荧光灯Eu3+的排放在hydrogel被观察，它优秀光表演是指示的。

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简介：为软织物重建得到一种新支架材料，我们通过混合crosslinked准备了XLHA-PNIPAAm和XLHA-MC血管注射剂hydrogels哈(XLHA)并且二温度敏感的材料poly在降级不同(N-isopropylacrylamide)(PNIPAAm)并且methylcellulose(MC)分别地。我们测试了injectablility，酶的biodegradability，温度敏感，结构cytotoxicity和二血管注射剂hydrogels的溶血。我们的研究成功地获得了XLHA-PNIPAAm血管注射剂hydrogel的准备条件，并且验证了那补充说非可能减解的材料PNIPAAm能推迟降级哈更有效地比可能减解的材料MC。与5kGy剂量放射准备的PNIPAAm，MBAAm/NIPAAm(M/M)=0.015，单体concentration=3%与最慢酶的biodegradability生产了XLHA-PNIPAAm。DSC结果证明XLHA-PNIPAAm的温度敏感比XLHA-MC的更稳定。二合成hydrogels在cytotoxicity和溶血测试被限制，XLHA-PNIPAAmhydrogel的biocompatibility比XLHA-MChydrogel更好出现了。

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简介：现在的学习为胰岛素的控制版本在综合瞄准thermosensitivehydrogel。根据一个修改方法，hydroxybutylchitosan(HBC)hydrogel拥有了热敏感被准备它能在25T上形成hydrogel在

简介：DearSir,IamDrKatrinaA.Mears,fromtheDepartmentofOphthalmologyandVisualSciences,UniversityofIowaCarverCollegeofMedicine,200HawkinsDrive,IowaCity,Iowa,USA.Iwishtopresentacaseofendophthalmitissecondarytoglobepenetrationfromahydrogelscleralbucklewhich,tothebestofourknowledge,isthefirstreportedcase

简介：Poly(vinylalcohol)(PVA)/hydroxyapatite(HA)compositehydrogelspecimenswerepreparedwith15%PVAand1%,2%,3%,4%and5%HAbyrepeatedfreezing-thawing.ThetestsofstaticanddynamicmechanicalpropertieswerecarriedouttodiscusstheinfluenceofdifferentcontentsofHAandfreezing-thawingcyclesonthemechanicalpropertiesofPVA/HAcompositehydrogel.TheresultsofstaticmechanicaltestsshowedthatthePVA/HAcompositehydrogelwith3%HAandninefreezing-thawingcycleshadexcellentstressrelaxationproperties,higherrelaxationratio,lowerstressequilibriumvalueandpresentedbetterpropertiesofcreepandrecovery.TheresultsofdynamicmechanicaltestshowedthatthePVA/HAcompositehydrogelwithninefreezing-thawingcycleshadhigherstoragemodulusandlossmodulus,sowasthePVA/HAcompositehydrogelwith3%HA.

简介：Thehydrogelwounddressingbasedonpolyvinylalcohol(PVA)waspreparedbythefreezing-thawingcyclicmethod.Thedehydrationkineticsofpreparedhydrogelswasdeterminedusingtheexperimentalmethodandmathematicalmodelingbasedondiffusionmechanism.TheresultsshowthatthedehydrationrateofPVAhydrogelwounddressinginverselydependsonthehydrogelthicknessaswellaswatercontentofthewound.Ontheotherhand,theinitialwatercontentofhydrogelandtheatmospherichumidityhavelittledirecteffectonthedehydrationrate.Thegoodagreementbetweenexperimentalandmathematicalmodelingresultsinearlystagesofdehydrationprocessshowsthatthepredominatefactordeterminingthedehydrationofthesewounddressingsisdiffusion.

简介：WithN-vinyl-2-pyrrolidone(NVP)anditaconicacid(IA),poly(N-vinyl-2-pyrrolidone/itaconicacid)[P(NVP/IA)]hydrogelwassynthesizedbyfreeradicalsolutionpolymerization.ThestructureofthisP(NVP/IA)wascharacterizedbyIR.Effectsofconcentrationofitaconicacid,amountofcross-linkagent,N,N′-methylene-bis-acrylamide,reactiontemperature,andtimeonpropertiesofswellingratio(SR)ofthehydrogelwereinvestigated.Theresultsshowthatthebestswellingpropertyofthehydrogelisobtainedat50℃and1.5h.pHsensitivityincreasesastheconcentrationofitaconicacidinthehydrogelsystemincreases.Swellingratioofthehydrogeldecreasesastheamountofcross-linkagentincreases.

简介：Poly(vinylalcohol)/hydroxylapatite(PVA/HA)compositehydrogelwaspreparedbyrepeatedfreezingandthawing.Thewaterlosspropertiesoftheresultanthydrogelwereinvestigatedbyusingopticalmicroscope.LongtimeimmersiontestsofPVA/HAcompositehydrogelwerecarriedoutinthedilutedcalfserumsolutiontostudythechangelawsofswellingpropertieswiththefreezing-thawingcyclesandHAcontent.Themicro-morphologiesofPVA/HAcompositehydrogelafterlongtimeimmersionwereobservedbymeansofthehigh-accuracy3Dprofiler.TheresultsshowthattheswellingprocessofPVA/HAcompositehydrogelistheconverseprocessofitswaterloss.LongtimeswellingratiocurvesofPVA/HAcompositehydrogelinthecalfserumsolutionaremanifestedasfourstagesofquickincrease,decrease,slowdecreaseandstablebalance,anditsequilibriumswellingratiodecreaseswiththeincreaseoffreezing-thawingcyclesandHAcontent.ItisrevealedthatthenetworkstructureofthecompositehydrogelimmersedforalongperiodissignificantlyimprovedwiththeincreaseofHAcontent.PerfectnetworkstructuresofPVA/HAcompositehydrogelaswellasfullandequilibriumtissuesafterswellingequilibriumareobtainedwhentheHAcontentis3%andthenumberoffreezing-thawingcyclesis7.