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时间:2020-06-05
《醚化支链淀粉的制备及其上浆性能研究.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、择噍熙技术第42卷第7期【22】Co~onTextileTechnology2014年7月醚化支链淀粉的制备及其上浆性能研究尹爱萍闫怀义张小勇梁五明陈菲(1.忻州师范学院,山西忻州,034000;2.山西云河集团公司,山西忻州,034000)摘要:探讨醚化支链淀粉的上浆性能。以玉米淀粉提取的支链淀粉为原料,以环氧乙烷为醚化剂,制备了醚化支链淀粉。测定了玉米淀粉、支链淀粉、醚化支链淀粉的糊化温度、黏度、黏度热稳定性、冻融稳定性及浆膜性能,并用玉米淀粉、支链淀粉、醚化支链淀粉浆液进行了上浆试验。结果表明:醚化支链淀粉的糊化温度较低、黏度较小、黏度热稳定性较好;其浆膜性能优于玉米原淀粉和支链
2、淀粉;醚化支链淀粉浆液在纯棉纱线和涤棉纱线的上浆效果均优于玉米淀粉和支链淀粉浆液。认为醚化支链淀粉更适宜作涤棉纱线上浆剂。关键词:玉米淀粉;醚化支链淀粉;糊化温度;黏度;析水率;浆纱强伸性中图分类号:TS103.846.1文献标志码:A文章编号:1001-7415(2014)07-0022-04ManufactureandSizingPropertyResearchofEtherifiedBranchedChainStarchYinAipingYanHuaiyiZhangXiaoyongLiangWumingChenFei(1.XinzhouTeachersUniversity,Sha
3、nxiXinzhou,034000;2.ShanxiYunheGroupCo.,Ltd.,ShanxiXinzhou,034000)AbstractSizingpropertyresearchofetherifiedbranchedchainstarchwasdiscussed.Branchedchainstarchex-tractedfromeo13'lstarchwasusedasmaterial,ethyleneoxidewasusedasetherificationagent,etherifiedbranchedchainstarchwasmanufactured.Proper
4、tiesofcornstarch,branchedchainstarch,etherifiedbranchedchainstarchweretestedincludinggelatinizationtemperature,viscosity,viscositythermalstability,freeze—thawstabilityandsizedfilmproperty.Sizingtestsweredoneforcornstarch,branchedchainstarch,etherifiedbranchedchainstarch.Theresultshowsthatge-lati
5、nizationtemperatureofetherifiedbranchedchainstarchislower,theviscosityisless,viscositythermalstabilityisbet—ter.Thesizedfilmpropertyofetherifiedbranchedchainstarchisbetterthanthatofcornstarchandbranchedchainstarch.Sizeeffectofpurecottonyarnandpolyestercottonblendedyarnsizedbyetherifiedbranchedch
6、ainstarchisbet—terthanthatofcornstarchandbranchedchainstarch.ItisconsideredthatetherifledbranchedchainstarchiSmuchmoresuitabletobeusedassizingagentforpolyestercottonblendedyarn.KeyWordsCornStarch,EtherifiedBranchedChainStarch,GelatinizationTemperature,Viscosity,WaterSepara—tingProportion,SizedYa
7、rnStrengthandElongation各种酯化变性淀粉作为涤棉纱的上浆剂已受到各界广泛关注_l引,但醚化支链淀粉作为涤棉纱1试验的上浆剂却少有研究。醚化淀粉同其他变性淀粉一样,具有黏度热稳定性高、黏着力强、抗冻融稳1.1试验原料与仪器定性好的特点。因此,为了给纺织行业提供更多试验原料:T/C65/3513tex纱,C19.5tex可供选择的变性淀粉浆料,采用玉米淀粉自制了纱,PVA1799,精制玉米淀粉J。醚化支链淀粉,分析了该淀粉的浆
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