壳聚糖分子量对合NMA-HTCC改性棉织物抗皱效果的影响分析研究 生物技术专业VIP专享VIP免费

壳聚糖分子量对合成NMA-HTCC改性棉织物抗皱效果的影响摘要：棉织物是被广泛用于服装制作、家居用品的重要天然纺织材料。这种材料优点主要在于具有极高的柔韧性，具有极强的生物降解性，具有优良的亲肤性和吸潮吸湿性。这些特性为棉织物的使用带来了更广泛的前景。但是与此同时，这种材料也易变形霉变，易起皱。因此，对于这种织物来说，需要对其进行功能处理，才能更好地将其利用与日常生活当中。其中，壳聚糖分子对于改性功能会起到很明显的的促进作用，这种分子降解性高、生物相容性好，吸附性强，因此也被广泛应用于各种领域，如纺织制药、环保医药等等。但是与此同时，壳聚糖存在一定的弊端，其仅溶于酸性溶剂，而不溶于水和常见的有机溶剂。其纤维不可与化学键交联，因此，在真正利用壳聚糖的过程当中，还需要进行一步化学改性来改变其相应的化学特性本文将三种不相同分子量（2万、5万、10万）的壳聚糖分别合成反应性壳聚糖季铵盐NMA-HTCC，然后进行抗皱处理，开展正交试验，然后探索其溶液浓度、分子量、温度等特性对抗皱性能的影响，并比较三种不同分子量壳聚糖合成的NMA-HTCC对棉织物整理的抗皱效果，从而为棉织物的功能改性提供理论依据。实验结果表明，NMA-HTCC在高温状态下，可以与棉纤维结合，生成强共价键。从此限制大分子链之间的滑移，进一步改善其织物性能。并且在本文试验中当壳聚糖分子量为2.0×104，处理温度为60℃，NMA-HTCC浓度为6g/L时，对于棉织物抗皱性能处理效果最佳。关键词：分子量；壳聚糖；棉织物；NMA-HTCC；抗皱EffectofMolecularWeightofChitosanWrinklResistanceofNMA-HTCCModifiedCottonFabricAbstract:Cottonfabricisanaturaltextilematerialwidelyusedingarmentmakingandhouseholdgoods.Theadvantagesofthismateriallieinitshighflexibility,strongbiodegradability,excellentskinaffinityandmoistureabsorption.Thesecharacteristicsbringmoreextensiveprospectsfortheuseofcottonfabrics.Butatthesametime,thismaterialisalsopronetodeformation,mildewandwrinkle.Therefore,forthiskindoffabric,itneedsfunctionaltreatment,inordertomakebetteruseofitanddailylife.Amongthem,chitosanmoleculecanplayanobviousroleinpromotingthemodificationfunction.Thismoleculehashighdegradation,goodbiocompatibilityandstrongadsorption,soitisalsowidelyusedinvariousfields,suchastextilepharmaceuticals,environmentalmedicineandsoon.Butatthesametime,chitosanhassomedrawbacks,itisonlysolubleinacidsolvents,butnotinwaterandcommonorganicsolvents.Itsfiberscannotbecrosslinkedwithchemicalbonds.Therefore,intheprocessofrealutilizationofchitosan,one-stepchemicalmodificationisneededtochangeitscorrespondingchemicalproperties.Inthispaper,reactivechitosanquaternaryammoniumsaltNMA-HTCCwassynthesizedfromthreekindsofchitosanwithdifferentmolecularweights(20,000,50,000,100,000).Afterwrinkleresistancetreatment,orthogonalexperimentswerecarriedout.Thentheeffectsofsolutionconcentration,molecularweightandtemperatureonwrinkleresistancewereexplored.ThewrinkleresistanceeffectsofNMA-HTCCsynthesizedfromthreekindsofchitosanwithdifferentmolecularweightsoncottonfabricfinishingwerecompared.Itprovidestheoreticalbasisforfunctionalmodificationofcottonfabrics.TheexperimentalresultsshowthatNMA-HTCCcancombinewithcottonfiberstoformstrongcovalentbondsathightemperature.Fromthenon,theslipbetweenmacromolecularchainswaslimitedandthefabricpropertieswerefurtherimproved.Whenthemolecularweightofchitosanis2.0x104,thetreatmenttemperatureis60CandtheconcentrationofNMA-HTCCis6g/L,thewrinkleresistanceofcottonfabricisthebest.Keywords:Molecularweight;Chitosan;Cottonfabric;NMA-HTCC;Wrinkleresistance目录摘要…………………………………………………………………………………ⅠAbstra...