spihnts纳米复合凝胶材料制备和性能研究

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1、广东工业大学硕士学位论文resuRshowedthat50％weightlossofpuresoybeanproteingelisobservedat371．95℃，while50％weightlossofSPI-HNTsllanocompositedgelisat393．16℃．AdditionofHNTsimprovedthethermalstabilityofcompositedgel．ThepictureofSEMshowedthatpuresoyproteingelpresentauniformsing

2、le-phasestructure；compositedgeladdedwithafewamountofHNTspresentatwo-phasedistributionstructure，andHNTsnanotubesdispersedinthematrixofSPIuniformly；thefmestructureshowedalittledifferentatdifferentratioofm(HNTs)：m(SPI)．Thesectionmorphologyofgelafterinfrareddryin

3、gwasmoresmooththanthatafterthedrumwinddryingandvacuumdrying．Therheologicalpropertiesofthegelwereinvestigated，andtheeffectofchemicalcrosslinkingagentglutaraldehyde(GTA)andtheamountofHNTsontherheologicalpropertiesofgelswerealsodiscussed．Theresultshowedelasticmo

4、dulus(G')ofGTAcrosslinkedSPI--HNTsgelWashigherthanthatofSPI··HNTscompoundwithoutGTA．Whiletangentlossangle(tan6)ofGTAcrosslinkedSPI-HNTsgelWaslessthanthatofSPI-HNTscompoundwithoutGTA；thereasonisthatcrosslinkingfunctionofGTAenhancingtheanti-macrostrainofgelsnet

5、works；theamountofHNTsingelsalsoaffecttheelasticmodulus(G．)andtangentlossangle(tan6)，becausetheappropriateamountofHNTsaddedadjustedtheinteractionintro—andbetweenSPIandHNTsmolecules．BycomparingtherheologicalpropertiesandFTIRspectrumofSPI-HNTsnanocompoundwithout

6、GTAcrosslinkingandwithGTAcrosslinking，theresultsshowedthatthecompositedhydrogenbondingisformedandthesecondarynetworkisestablishedbetweenhalloysitenanotubesandsoybeanprotein．TheSPI-HNTsnanocompositedgelwithdrug—loadedWasobtainedinphy’sicalabsorptionmethodbyimm

7、ersinginthedrugsolution．Thedrug—releasedpropertiesofthegelswerediscussed．Theresultsshowthattheaccumulativereleaseratio(CR)ofthegelisfastinthefirst，thenslowindifferentbuffer(pH1．7，pH4．4andpH7．2)，andtheaccumulativereleaseratio(CR)Washigherinacidmedium(pHI．7andp

8、H4．4)thaninpH7．2buffer；theaccumulativereleaseratio(CR)ofgelswithdrug—loadedwhichareobtainedindifferentCHDconcentrationdecreasewithf、，Abstractincreaseofm(HNTs)：m(SPI)．niSmayberelevantwitht