Core-Shell Polymeric Microcapsules with Superior Thermal and Solvent Stability

被引：86

作者：

Kang, Sen ^{[1
]}

Baginska, Marta ^{[2
]}

White, Scott R. ^{[2
]}

Sottos, Nancy R. ^{[1
]}

机构：

[1] Univ Illinois, Dept Mat Sci & Engn, Beckman Inst Adv Sci & Technol, Urbana, IL 61801 USA

[2] Univ Illinois, Dept Aerosp Engn, Beckman Inst Adv Sci & Technol, Urbana, IL 61801 USA

来源：

ACS APPLIED MATERIALS & INTERFACES | 2015年 / 7卷 / 20期

关键词：

microcapsules; polydopamine; thermal stability; solvent stability; MULTIFUNCTIONAL COATINGS; COMPOSITES; CHEMISTRY; CAPSULES;

D O I：

10.1021/acsami.5b02169

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A protective polydopamine (PDA) coating is applied to core-shell microcapsule surfaces by the polymerization of dopamine monomers. A neutral aqueous solution and the addition of an oxidant (i.e., ammonium persulfate) are crucial for microcapsule survival and the initiation of PDA polymerization, respectively. The resulting PDA coating is a dense and uniform layer approximately 50 nm thick. The PDA protective coating significantly increases capsule stability at an elevated temperature (180 degrees C) and in a variety of organic solvents and acidic/basic solutions that otherwise lead to deflation and loss of the core content of uncoated microcapsules.

引用

页码：10952 / 10956

页数：5

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