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Facile and efficient isocyanate microencapsulation via SDBS/PVP synergetic emulsion
Journal of Applied Polymer Science ( IF 2.7 ) Pub Date : 2019-06-04 , DOI: 10.1002/app.48045
Wei Lu 1, 2, 3 , Qingwei Meng 4 , Chuanrui Qin 1, 2 , Jinliang Li 1, 2 , Guansheng Qi 1, 2, 3 , Biao Kong 1, 2, 3 , Zhenglong He 1, 2, 3
Affiliation  

A binary emulsion system via combination of sodium dodecylbenzenesulfonate (SDBS) and polyvinyl pyrrolidone (PVP) was employed to prepare microcapsules containing isophorone diisocyanate. The effect of different concentrations of SDBS and PVP on the size and distribution of capsules was investigated. The results showed that uniform and size‐controllable capsules were synthesized by synergistic function of SDBS and PVP. Characteristics of capsule were studied by optical microscopy, Fourier transform infrared spectrometry, scanning electron microscopy, thermal gravimetric analysis, and 1H NMR. The results revealed that the core content and yield of the spherical capsules were approximately 65.7 and 79 wt %, respectively, at the capsule diameter of ~115 μm. The residue core content of microcapsules was approximately 44.7 wt % after immersion in water for 10 days. And its self‐healing epoxy coatings showed excellent corrosion resistance performance after accelerated corrosion tests. These results exhibited the feasibility and great application prospect of the multiemulsifiers system in the microcapsule synthesis process. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48045.

中文翻译:

通过SDBS / PVP协同乳液轻松高效地进行异氰酸酯微囊化

通过十二烷基苯磺酸钠(SDBS)和聚乙烯吡咯烷酮(PVP)的组合的二元乳液体系来制备含有异佛尔酮二异氰酸酯的微胶囊。研究了不同浓度的SDBS和PVP对胶囊大小和分布的影响。结果表明,通过SDBS和PVP的协同作用,可以合成均匀且大小可控的胶囊。通过光学显微镜,傅里叶变换红外光谱,扫描电子显微镜,热重分析和1对胶囊的特性进行了研究。1 H NMR。结果表明,在直径约115μm的胶囊中,球形胶囊的芯含量和产率分别约为65.7%和79 wt%。浸入水中10天后,微胶囊的残留核心含量为约44.7重量%。在加速腐蚀试验后,其自修复环氧涂料具有出色的抗腐蚀性能。这些结果显示了该多乳化剂体系在微胶囊合成过程中的可行性和广阔的应用前景。分级为4 +©2019 Wiley Periodicals,Inc.J.Appl。Polym。科学 2019136,48045。
更新日期:2019-06-04
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