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《一种具有酸碱指示功能的蚕丝织物的制备与性能表征.pdf》由会员上传分享,免费在线阅读,更多相关内容在应用文档-天天文库。
1、2014,40(1):0081—0084ISSN0257—4799;CN32—1115/SE—mail:CYKE@chinajourna1.net.ca一种具有酸碱指示功能的蚕丝织物的制备与性能表征应建维章淑娟余志成(浙江理工大学材料与纺织学院,杭州310018;浙江理工大学生态染整技术教育部工程研究中心,杭州310018)摘要利用花青素的酸碱变色特性研制具有酸碱指示功能的新型蚕丝织物。依据相似相溶原理从紫土豆中提取天然染料,通过紫外一可见光吸收光谱判断紫土豆天然染料属于花青素。利用提取的紫土豆天然染料与明矾同浴媒染的方法,制备具有酸碱指示功能的蚕丝织物。对织物
2、性能的测试结果表明:蚕丝织物在pH3~10的酸、碱溶液中呈现出良好的变色效果,依次呈粉红色、浅粉色、粉紫色、紫色、暗蓝色、暗绿色,颜色变化在60~75s内达到稳定;蚕丝织物在pH为3.0、5.0、8.0的缓冲溶液中循环处理2次,色相值(H)基本稳定。研究结果提示,借助金属媒染剂可使紫土豆天然染料与蚕丝纤维形成配位作用,从而制备出具有酸碱指示功能的新型蚕丝织物。关键词紫土豆天然染料;花青素;媒染;蚕丝织物;变色;酸碱度中图分类号TS193.21;TS146文献标识码B文章编号0257—4799(2014)01—0081—04PreparationandProper
3、tyCharacterizationofaNovelSilkFabricSensitivetopHValueYINGJian—WeiZHANGShu—Juan’YUZhi—Cheng'(CollegeofMaterialsandTextiles,ZhejiangSci-TechUniversity,Hangzhou310018,China;EngineeringResearchCenterforEco—Dyeing&FinishingofTextiles,MinistryofEducation,ZhejiangSci—TechUniversity,Hangzho
4、u310018,China)AbstractAnoveltypeofsilkfabricabletoindicatepHvaluewaspreparedbyutilizingthecolorchangingpropertyofanthocyaninunderdifferentpHvalues.Accordingtothelikedissolveslikeprinciple.anaturaldyewasextractedfrOmpurplepotatoandwasjudgedasanthocyaninbasedonitsmolecularstructureobse
5、rvedbyUV—visibleabsorptionspec—trometrydetermination.Thenaturaldyeofpurplepotatoandalumweremordantedinthesamedyeingbathforprepara—tionofthenovelsilkfabric.PropertycharacterizatiOnshowedthatthenovelsilkfabrichadgoodcolorchangingeffectinsolutionswithpHvaluesrangingfrOm3to10.AsthepHvalu
6、eincreased,colorofthefabricchangedfrOmpink,lightpink,pinkandpurple,purple,darkbluetodarkgreengradualy.Thecolorchangingwasstabilizedwithin60to75sec—endsHuevalue(H)ofthefabricwassubstantiallystableaftertworoundsofcyclictreatmentinbuffersolutionswithpHvalueof3.0,5.0and8.0respectively.Th
7、eresultssuggestthat,withthehelpofmetalmordant,coordinationbetweennaturaldyeofpurplepotatoandsilkfiberscanbeestablishedandthenovelsilkfabricabletoindicatepHvaluecanthusbeprepared.KeywordsPurplepotatonaturaldye;Anthocyanin;Mordant;Silkfabric;Colorchange;pHvalue土豆(purplepotato)是茄科茄属1年生草
8、本植收稿日期:2013—
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