基于乙基纤维素构建缓释型NaCl微胶囊及性能研究  

Construction and performance of sustained-release NaCl microcapsules based on ethyl cellulose

作　　者：白雪 郭彦强 熊涛 向豪 秦妞妞 陈亚芍[1] BAI Xue;GUO Yan-qiang;XIONG Tao;XIANG Hao;QIN Niu-niu;CHEN Ya-shao(Key Laboratory of Applied Surface and Colloid Chemistry,Ministry of Education,School of Chemistry & ChemicalEngineering,Shaanxi Normal University,Xi’an 710119,China;Xi’an Highway Institute,Xi’an 710065,China)

机构地区：[1]陕西师范大学化学化工学院,应用表面与胶体化学教育部重点实验室,陕西西安710119 [2]西安公路研究院,陕西西安710065

出　　处：《应用化工》2020年第12期3055-3059,3063,共6页Applied Chemical Industry

基　　金：陕西省重点研发计划项目(2018GY-117)。

摘　　要：以氯化钠为囊芯材料,乙基纤维素(EC)为微胶囊壁材,通过乳化-溶剂挥发法制备缓释型融雪剂NaCl/EC微胶囊。利用扫描电子显微镜(SEM)、X射线能谱仪(EDS)、热分析仪(TG)和电导率仪对NaCl/EC微胶囊的微观形貌、包封效能和缓释性能进行表征,考察微胶囊形成参数(搅拌速度、溶剂挥发温度、NaCl掺量)对缓释性能的影响。结果表明,在搅拌速度400 r/min,溶剂挥发温度30℃,NaCl与EC质量比为2∶1的优化条件下,制得的NaCl/EC微胶囊产物呈规则球形,分散均匀,表面光滑,缓释效果较好。Sustained-release snowmelt agent,NaCl/EC microcapsule,was prepared by emulsifier-solvent evaporation method with NaCl as the core material and ethyl cellulose(EC)as the microcapsule wall material.The micro-morphology,encapsulation efficiency,and sustained-release performance of NaCl/EC microcapsule were determined and measured by scanning electron microscope(SEM),X-ray energy spectrometer(EDS),thermogravimetric analyzer(TG),and conductivity meter,respectively.The influence of stirring speed,solvent volatilization temperature,and NaCl content on sustained-release were investigated.The results showed that the NaCl/EC microcapsules were formed with regular spherical,excellent dispersion,good sustained-release effect under the stirring speed of 400 r/min,30℃,and mass ratio of 2∶1(NaCl to EC).

关 键 词：乙基纤维素 微胶囊 缓释 融雪剂 

分 类 号：O647.11[理学—物理化学] O647.2[理学—化学]