淀粉糊液泡沫的制备与粘附性探究.pdfVIP

第47卷第3期 应 用 化 工 Vol.47 No.3 2018年3月 Applied Chemical Industry Mar.2018 淀粉糊液泡沫的制备与粘附性研究 张禅,曹新伟,刘建立,王鸿博,高卫东 (江南大学 生态纺织教育部重点实验室,江苏 无锡 214122) 摘 要:以氧化淀粉为例,建立氧化淀粉糊液泡沫的制备方法,并提出一种淀粉泡沫糊液粘附性能的测试方法,实 现了淀粉糊液泡沫粘附性的客观表征。 讨论了浆料配方、发泡剂浓度和烘燥方式对浆液粘附力的影响。 结果表 明,泡沫浆液对纤维须条的润湿、铺展和吸附是形成粘合的基础;内聚破坏和界面破坏是决定粘合破坏的关键因 素;与单组分氧化淀粉相比,氧化淀粉和固体聚乙烯酰胺复配后糊液泡沫粘附力增加;发泡剂浓度在临界胶束浓度 时,淀粉糊液泡沫的起泡能力、泡沫的稳定性和粘附力最好;相比于热风烘燥,真空冷冻干燥法可以有效提高淀粉 糊液泡沫对纤维须条的粘附性。 关键词:氧化淀粉;发泡剂;泡沫;粘附力 中图分类号:TQ932;TS 101.3 文献标识码:A 文章编号:1671-3206(2018)03-0497-04 Study on preparation and adhesion of starch paste foam ZHANG Chan,CAOXin-wei,LIUJian-li,WANGHong-bo,GAO Wei-dong (Key Laboratory of Eco-Textiles,Ministry of Education,Jiangnan University,Wuxi214122,China) Abstract:Taking oxidized starch as an example,this paper expounds the preparation method of oxidized starch paste foam,and proposesatest methodfor adhesionproperty of starchfoampasteliquid,andreali- zes theobjectivecharacterizationof starchpastefoamadhesion.Theeffectof slurryformula,foamingagent concentration and drying method on slurry adhesion was discussed.The results show that the wetting, spreading and adsorption of the foam slurry on thefiber should be the basisof bonding.Internal cohesion and interfacial destruction are the key factors to determine adhesion failure.Compared with the single- component oxidized starch,theadhesionof thepasteliquidfoamwasincreasedafterthecompoundof oxi- dized starchandsolidpolyethyleneamide.Whentheconcentrationof blowingagentincriticalmicelle,the foaming ability of starch paste liquid foam,the stability of foam and adhesion force are best.Compared with the hot air drying,the vacuum freeze-drying method can effectively i