Study of the grafting copolymerization modification of caprolactam onto hardwood pulp fiber: Effects on the physical properties of the grafted pulp，2009先进纤维与聚合物材料国际学术会议（ICAFPM，10.21-10.24，上海）-中国聚合物网,论文下载

Study of the grafting copolymerization modification of caprolactam onto hardwood pulp fiber: Effects on the physical properties of the grafted pulp

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hardwood pulp caprolactam grafting copolymerization grafting ratio
physical properties

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676K

所属学科：

分子表征

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2009先进纤维与聚合物材料国际学术会议（ICAFPM，10.21-10.24，上海）

简介：

Theeffectsofgraftingonbleachedhardwoodpulpwithcaprolactaminanalkalineaqueousmedium,withpotassiumpersulphate/sodiumbisulfiteasinitiatorsystem,werestudiedinthispaper.Boththegraftingratioandthemodifiedpulppropertiesofthegraftingcopolymerizationprocesshadbeendetermined.Andtherelevancebetweenthemodifiedeffectsandmaintechnologicalparameterssuchasdosageofmainchemicals(monomer,initiator,sodiumhydroxide),reactiontimeandtemperaturewerediscussed.Theoptimummodificationtechnologyconditionswereasbelow:themonomerconcentrationwas0.44mol/L,thepotassiumpersulfateconcentrationwas14.8mmol/L,themassratioofpotassiumpersulfatetosodiumbisulfitewas1.25,thereactiontemperaturewas50℃,andthereactiontimewas3hours.Theresultsshowedthatahighergraftingratioof28.2%couldbereachedundertheoptimizedmodificationconditions,andthephysicalstrengthperformancesofthemodifiedpulpsuchastensileindex,burstingindexandtearingindexcouldbeimprovedsignificantlywiththeoptimummodificationconditions.Butthebrightnessofpulpwasreducedsomewhat.ThestructureofthecopolymerwascharacterizedbyFT-IR,whichverifiedthatcaprolactamhadbeengraftedontothehardwoodpulpsuccessfully.

作者：

WANG Lijun, HAN Qing, XIU Huijuan, XIE Yimin

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2010-03-22 16:16:20

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