1-丁基-3-甲基咪唑氯離子液體的制備與粘膠纖維素溶解性能的研究.pdf

1、青島大學(xué)碩士學(xué)位論文1丁基3甲基咪唑氯離子液體的制備與粘膠纖維素溶解性能的研究姓名：高轉(zhuǎn)轉(zhuǎn)申請學(xué)位級別：碩士專業(yè)：材料學(xué)指導(dǎo)教師：郭憲英20090607AbstractCelluloseisthemostabundantregenerativematerial，andderivitizedproductshavemanyimportantapplications，butcelluloseconsistsofpolydisperselin

2、earglucosepolymerchainswhichformhydrogenbondedsupramolecularstructurescelluloseisinsolublemostcommonorganicliquids，thesolventswhichcandissolvewithcellulosealsoarebadlyforenvironmentSOthenovelandgreensolventl—butyl3methyl

3、imidazoliumchloridesalts[BMIM]CIforcelluloseisveryimportantInthisresearch，ionicliquidsof[BMIM]C!derivedfrom卜methyimidazoleandlchlorobutanewassynthesizedinmicrowaveovenwithlowpowerandshorttimeAtthesamesystem，1chlorobutane

4、：lmethyimidazole=12：1iSthebestmolarratioTheconversionisover95％Thestructureof【BMIM]C1wascharacterizedbyinfraredspectra(1R)，hydrogenlnuclearmagneticresonance(1HNMR)carbon13nuclearmagneticresonance(”CNMR)andelementanalysisI

5、nthispaperrthreedifferentcellulosewithoutanypretreatmentwerereadilydissolvedin[BMIM]C!heatinginamicrowaveovenDissolutionratesisoven20％，andbeformedasaviscousandcoloredsolutionIntheresearch，wediscussedthepossibledissolutio

6、nmechanismThedissolutioncelluloseWaSprecipitatedinthemixtureofwaterandethan01Intheresearch，theinitialmatrialsandregeneratedcellulosewerecharacterizedbyinfraredspectra(IR)，scanningelectronmicroscopy(SEM)，differentialscann

7、ingcalorimetry(DSC)，thermogravimetricanalysis(TGA)，X—raydiffraction(XRD)Theresultsshowedthat【BMIM]CIcanbeusedasnonderivatizingsolventsforcelluloseThecellulosecandissolvedin【BMIM]CIabsolutelyTheregeneratedsampleexhibitsal

8、oweronsettemperaturefordecomposition，butgivesahighercharyieldThedecompositionrateiS6％8％1nthispaper，Wealsodiscussedthatchitinandcellulosewithchitindissolvedin【BMIM]CIKeyword：Ionicliquids；Cellulose；microwave；dissolution；ch