表面活性剂与纳米颗粒协同稳定Pickering有机硅乳液的制备及其应用性能  

Preparetion and application of silicones Pickering emulsion synergistically stabilized with surfactant and nanoparticles

作　　者：范奥运 沈军炎 杨雷[1,2] 李剑浩 张志坚 FAN Aoyun;SHEN Junyan;YANG Lei;LI Jianhao;ZHANG Zhijian(College of Textile Science and Engineering(International Institute of Silk),Zhejiang Sci-Tech University,Hangzhou,Zhejiang 310018,China;Zhejiang Provincial Innovation Center of Modern Textile Technology(Jianhu Laboratory),Shaoxing,Zhejiang 312033,China;Zhejiang Kefeng Silicone Co.,Ltd.,Jiaxing,Zhejiang 314423,China;Zhejiang Prance Chemical Co.,Ltd.,Shaoxing,Zhejiang 312033,China)

机构地区：[1]浙江理工大学纺织科学与工程学院(国际丝绸学院),浙江杭州310018 [2]浙江省现代纺织技术创新中心(鉴湖实验室),浙江绍兴312033 [3]浙江科峰有机硅股份有限公司,浙江嘉兴314423 [4]浙江普朗思化学有限公司,浙江绍兴312033

出　　处：《纺织学报》2024年第1期136-145,共10页Journal of Textile Research

基　　金：海宁市科技计划工业项目(2022001);浙江省现代纺织技术创新中心(鉴湖实验室)定向项目(CXZX2022005HD,CXZX2022006HD)。

摘　　要：针对目前有机硅平滑剂乳液往往存在分散稳定性差或高剂量表面活性剂引起的应用性能降低等问题,以聚丙烯酸异辛酯的共聚物胶乳(PEHA)为Pickering颗粒,协同表面活性剂,用于制备“油/水”Pickering有机硅乳液,并将其用于织物后整理。考察了PEHA粒径、表面亲水改性及PEHA质量分数对有机硅乳液分散稳定性的影响,通过对整理残液化学需氧量(COD)和整理织物表面摩擦因数的研究,考察了表面活性剂与Pickering纳米颗粒协同稳定对有机硅乳液应用性能的影响。结果表明:PEHA颗粒吸附在有机硅液滴的表面,形成机械阻隔,提升有机硅乳液的分散稳定性,180 nm的PEHA颗粒的稳定效率最佳,90 nm时的稳定效率最差;表面亲水改性能显著提高PEHA稳定乳液的效率,在质量分数仅为10%时,即可实现乳液稳定;最佳稳定方案可使表面活性剂质量分数降低60%以上;浸轧整理织物时,相比表面活性剂独自稳定的体系,Pickering体系吸附织物效率更高,整理后残液的COD值降低63%,整理织物表面静、动摩擦因数分别降低至0.51与0.49,即“Pickering/表面活性剂”协同稳定有机硅乳液具有良好的应用性能。Objective Silicones having low surface energy,excellent lubricity,thermal stability,and hydrophobicity,are widely used as finishing agentsfor endowing the finished fabrics with softness,fluffiness,smoothness,as well as other special features.Silicones must be pre-homogenized into emulsions before application.However,higher emulsion stability means higher content of surfactantsfor even more than 50%of the silicone mass.Consequently,the higher content of surfactant not only increases the cost of emulsion production but also hinders the silicone adsorption onto the fabrics,resulting in the low efficiency of these additives.While the high concentration of additive residues causes COD to increase in the working liquid,the processing burden of contaminated water treatment also got increased.Hence,it is extremely urgent to develop a highly efficient and feasible stabilization system for silicones.Method Isooctyl acrylate(EHA)and hydrophilically modified isooctyl acrylate(HPEHA)copolymer latex particles were prepared by semi-continuous seed emulsion polymerization,which were used as Pickering particles.A series of silicone oil/water(O/W)emulsions dosage co-stabilized by Pickering particles were prepared,aiming at development of stabization system with reduced dosage of surfactants.The Pickering particle co-stabilized emulsions were adopted to finish fabrics.The influence of philically modified isooctyl acrylate(PEHA)particle size,dosage,and surface hydrophilic modification on the dispersion stability of the emulsions,as well as Pickering particles on the surface friction coefficientsof the finished fabrics and COD values of wastewater,were investigated.Results PEHA and the hydrophilically modified PEHA(HPEHA)latex were dried in the first stage.The resulted latex films were analyzed with infrared spectrometer and video contact angle measuring instrument.The resultsdemonstrated the successful hydrophilic modification of PEHA.In order to obtain a stable emulsion,the dosage of surfactant to stabilize the emulsion was as high

关 键 词：有机硅乳液 Pickering乳液 化学需氧量 后整理剂 摩擦因数 织物整理 

分 类 号：TS195.2[轻工技术与工程—纺织化学与染整工程]