Capsules Made of Cross-Linked Polymers and Liquid Core: Possible Morphologies and Their Estimation on the Basis of Hansen Solubility Parameters
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- 作者：Alexandra Latnikova ; Dmitry O. Grigoriev ; Helmuth M枚hwald ; Dmitry G. Shchukin
- 刊名：The Journal of Physical Chemistry C
- 出版年：2012
- 出版时间：April 12, 2012
- 年：2012
- 卷：116
- 期：14
- 页码：8181-8187
- 全文大小：364K
- 年卷期：v.116,no.14(April 12, 2012)
- ISSN：1932-7455
文摘
The model substance 2-methylbenzothiazole with moderate amphiphilic properties, which is used as liquid corrosion inhibitor, was encapsulated via interfacial polymerization with three types of polymers with high cross-link density: polyurethane, polyurea, and polyamide. The structure of the resulting capsules depends on the type of polymer. Polyurethane and polyurea formed 鈥渃ompact鈥?particles with 2-methylbenzothiazole homogeneously distributed in the polymer matrix, while in the case of polyamide core鈥搒hell structures were formed. 鈥淐ompact鈥?morphologies form due to the high affinity of the liquid capsule component to the polymer; core鈥搒hell morphology is formed when the affinity is low. Application of the Hansen solubility parameters approach allows prediction and control of the morphology of capsules made of cross-linked polymers.