共查询到19条相似文献,搜索用时 234 毫秒
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综述了微胶囊技术近几年的应用发展,描述了界面聚合法、原位聚合法、复合凝聚法等几种常用微胶囊制备技术,以及微胶囊应用技术近几年在实际研究中的作用。着重介绍了微胶囊在纺织后整理、印花、染色中的作用。通过几种研究技术的比较和在各个领域应用的综述,找出微胶囊技术在纺织领域应用中的注意事项和它本身存在的技术局限性,并对微胶囊技术的未来进行了展望。 相似文献
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微胶囊技术在胶黏剂中的应用 总被引:2,自引:0,他引:2
概述了微胶囊的发展历程和结构特征,综述了微胶囊的制备原理及方法,对三种制备微胶囊的方法-化学法、相分离法和物理法进行了比较.介绍了微胶囊的应用及其最新研究进展.用在胶黏剂领域的微胶囊技术进步很快,特别在微胶囊的设计方面,现在可以根据用途提供种类繁多的胶黏剂,以前无法解决的问题,现在通过微胶囊结构的设计,可以得到圆满解决.讨论了微胶囊制备技术在胶黏剂领域的应用,主要探讨了微胶囊厌氧胶黏剂、微胶囊压敏胶黏剂和微胶囊环氧树脂胶黏剂的制备和应用,展望了微胶囊胶黏剂的应用前景. 相似文献
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介绍了微胶囊和脂质体两类包载技术的发展现状及其在化妆品中的应用和制备方法。概述了提高微胶囊、脂质体的稳定性和包封率及其对应用环境、化妆品中其它组分的耐受力,开发新型的微胶囊、脂质体产品的途径。扩大应用范围、实现工业化生产是未来包载技术的发展方向。 相似文献
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近年来,微胶囊技术在生物医药、化工、食品等行业得到了广泛应用和发展.以液中干燥法制备阿司匹林微胶囊,研究了微胶囊的形成过程、表观形貌、粒度及其体外释放行为.研究结果表明,阿司匹林微胶囊形成过程中,乙基纤维素分散成球,继而在各微球表面析出,微球越来越细密,表面空洞减小,最终形成完整的微胶囊.微胶囊表面致密、光滑,有少量细小的孔洞,多数呈球形,但粒度不均匀,有不规则杂片存在.粒度基本呈正态分布,平均粒径为1 445 nm.随着制备微胶囊过程中阿司匹林原料药加入量的增加,微胶囊成品的实际载药量增加,但其包覆率却随之减小.在体外释放初始阶段,微胶囊中阿司匹林的释放较快,继而释放速率减慢呈缓慢上升趋势.加入少量药品制备的微胶囊中阿司匹林释放速度较大. 相似文献
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Fei Song Yannan Li Bo Wang Xiaojun Shen Hui Wang Rui Li Qiuyu Xia 《Journal of the American Oil Chemists' Society》2022,99(4):353-364
Camellia seed oil (CSO) is one of the richest sources of oleic acid (75–80%) and it is considered to provide beneficial health effects to humans. However, its susceptibility to oxidative degradation prevents its widespread use in the food industry. This study was aimed to improve the stability of camellia seed oil by microencapsulation. CSO was microencapsulated using whey protein concentrate (WPC) and maltodextrin (MD) or starch sodium octenylsuccinate (SSOS) as wall materials. The produced oil-in-water emulsion was subsequently dehydrated to produce microcapsule powder using spray and freeze drying techniques, respectively. Various characteristics of oil-in-water emulsion and final microcapsule powder including particle size distribution, encapsulation efficiency, morphology, rheological properties of reconstituted emulsions, in vitro digestion behavior and oxidative stability were determined to investigate the effect of wall material composition and drying method on these microcapsule powder characteristics. The spray-dried powder had significantly higher bulk density and smoother surface compared to freeze-dried powder while the freeze-dried CSO microcapsule powder with WPC/SSOS as wall material had the highest encapsulation efficiency and the lowest surface oil. The subsequent in vitro digestion test suggested the microencapsulated CSO could be successfully controlled-released in the simulated gastric (10.28–13.03%) and the subsequent intestinal fluid (72.89–89.61%). Oxidative stability of camellia seed oil was significantly improved by microencapsulation. The freeze dried CSO microcapsule powder in WPC/SSOS wall material exhibited highest encapsulation efficiency (95.17%) and best oxidative stability (peroxide value and p-anisidine values of 3.57 meq/kg oil and 3.01, respectively, during the 45 days storage at 25°C. 相似文献
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高阻尼微胶囊/环氧树脂复合材料的制备及性能 总被引:1,自引:0,他引:1
以不同含量和粒径的微胶囊制备了微胶囊/环氧树脂复合材料,采用动态力学热分析仪,通过双悬臂梁测试方法在变温(-40~150℃)和变频(1~200Hz)条件下对其阻尼性能进行了研究。结果表明:微胶囊含量、粒径以及囊芯液体的黏度对复合材料的阻尼性能有显著影响。在相同含量下,随着微胶囊粒径和囊芯液体黏度的增大,复合材料阻尼性能不断提高。微胶囊的加入提高了复合材料低频下的阻尼性能。 相似文献
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