One-Pot Synthesis of Composite Nano-Capsules with Paraffin as Core and PMMA-SiO₂ as Shell by Interfacial Hydrolysis and Polymerization

Abstract:

Nano-capsules with organic-inorganic composite PMMA-SiO2 as the shell and paraffin as the core have been largely and rapidly synthesized by the cooperative reaction of interfacial hydrolysis and polymerization. Ammonium persulfate as the initiator and catalyst was used to make the polymerization and hydrolysis process occurring simultaneously and to improve the uniformity and controllability of capsule morphology. The prepared homogeneous core-shell structures of capsules with the grain size around 100 nm have small volume change and stable thermodynamic characteristics. The cooperative reactions of polymerization and hydrolysis process provide a convenient and efficient method for preparing homogeneous and stable organic-inorganic composite capsules.

• Periodical: Materials Science Forum (Volume 722)
• Pages: 71-75
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.722.71
• Online since: June 2012
• Authors: Xiao Lin Wu, Rong Sun, Peng Li Zhu, Ruxu Du
• Keywords: Nano-Capsules, Phase Change Materials (PCM), Phase Transition, PMMA-SiO₂

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