Citation: Xiao-Ji Ye, Zhuo-Xi Ma, Yi-Xi Song, Jia-Jia Huang, Min-Zhi Rong, Ming-Qiu Zhang. SbF₅-loaded microcapsules for ultrafast self-healing of polymer[J]. Chinese Chemical Letters, ;2014, 25(12): 1565-1568. doi: 10.1016/j.cclet.2014.07.002 shu

SbF₅-loaded microcapsules for ultrafast self-healing of polymer

1.
Key Laboratory for Polymeric Composite and Functional Materials of Ministry of Education, GD HPPC Lab, School of Chemistry and Chemical Engineering, Sun Yat-sen University, Guangzhou 510275, China

Corresponding author: Ming-Qiu Zhang,
Received Date: 22 May 2014
Available Online: 1 July 2014
Fund Project: the Science and Technology Program of Guangdong Province (Nos. 2010B010800021, 2010A011300004, 2011A091102001 and S2013020013029) (No. 20090171110026)

To accelerate self-healing speed of epoxy materials, epoxy-SbF₅ cure was introduced into the healing chemistry. Due to the high activity of SbF₅, a milder SbF₅-ethanol complex with improved processability was prepared, but it was still quite active and cannot be encapsulated by conventional encapsulation techniques like in situ polymerization. Accordingly, a novel route was proposed. Hollow silica microcapsules were firstly synthesized via sol-gel technique, which were then steeped in ethanol solution of SbF₅-ethanol complex under vacuum, allowing infiltration of the latter into the capsules. The optimal formulation for creating the hollow silica capsules was studied in detail. Moreover, the results of optical pyrometry demonstrated that the encapsulated chemical retained its high reactivity toward the epoxy.
- Sol-gel,
- Microencapsulation,
- Lewis acid,
- Self-healing
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通讯作者: 陈斌, bchen63@163.com

SbF₅-loaded microcapsules for ultrafast self-healing of polymer