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Preparation and characterization of novel polyamide paraffin MEPCM by interfacial polymerization technique
Author(s) -
Wei Ju,
Li Zhenzhong,
Liu Ling,
Liu Xiang
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.37681
Subject(s) - polyamide , thermogravimetric analysis , materials science , interfacial polymerization , differential scanning calorimetry , liquid paraffin , chemical engineering , scanning electron microscope , polymer chemistry , polymerization , phase change material , acetone , monomer , composite material , polymer , chemistry , organic chemistry , thermal , physics , meteorology , engineering , thermodynamics
A novel polyamide‐paraffin microencapsulated phase change material (MEPCM) was prepared by interfacial polymerization technique using 1,3,5‐benzenetricarbonyl chloride (TMC) and ethylenediamine as monomers and 30# paraffin as core material. Morphology, chemical composition, thermal properties of the MEPCM were studied by scanning electron micrograph, FT‐IR spectrum, differential scanning calorimeter analysis and thermogravimetric analysis. The solvent resistances of the MEPCM were also studied by observing the morphology changes of the MEPCM under optical microscope. Results indicate that the MEPCMs prepared under optimal conditions have spherical shape with average diameter of 6.4 µm, and the polyamide shell has successfully packaged the paraffin core. The MEPCM has a high efficiency in storing and releasing heat. The latent heat is 121.7 J/g and the microencapsulation ratio is 87%, 5% weight loss temperature is 260°C. The MEPCM is stable in H 2 SO 4 solution (ω = 0.98), NaOH solution (ω = 0.40), ethanol, acetone, ether, dimethylformamide while can be destroyed by ZnCl 2 solution (ω = 0.60). © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci, 2013