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Preparation and Characterization of High Content Paraffin Wax Microcapsules and Micro/Nanocapsules with Poly Methyl Methacrylate Shell by Suspension‐Like Polymerization
Author(s) -
Zhang Jiaojiao,
Zhao Tianbo,
Chai Yuqiao,
Wang Lili
Publication year - 2017
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.201600631
Subject(s) - nanocapsules , differential scanning calorimetry , paraffin wax , thermal stability , particle size , chemical engineering , suspension polymerization , chemistry , methyl methacrylate , polymerization , in situ polymerization , materials science , polymer chemistry , composite material , wax , polymer , nanoparticle , nanotechnology , organic chemistry , physics , engineering , thermodynamics
The suspension‐like polymerization method is used to obtain poly methyl methacrylate ( PMMA )/paraffin wax microcapsules and micro/nanocapsules with high core content. Particle size distribution ( PSD ) analysis indicates that the average particle size of microcapsules is 94 µm, and the size of micro/nanocapsules ranges in 0.1‐19 µm. Differential scanning calorimetry ( DSC ) and thermalgravimetric analysis ( TGA ) results show that the fabricated paraffin contents in microcapsules and micro/nanocapsules are as high as 89.5 wt% and 80.2 wt%, respectively with good thermal stability. Thermal cycling tests justify that both the microcapsules and micro/ nanocapsules have good thermal reliability with respect to the changes in their thermal properties after 1000 thermal cycling. This work provides a novel method to prepare microcapsules and micro/nanocapsules with high core content which may benefit further study on thermal energy storage.