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Preparation and Characterization of Heat Sensitive Color‐developing Microcapsules
Author(s) -
BA Xinwu,
AN Puying,
LU Shuang,
LIU Guangtian
Publication year - 2009
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.200990193
Subject(s) - chemistry , polyurethane , polymerization , chemical engineering , characterization (materials science) , particle size , particle size distribution , particle (ecology) , surface roughness , colloid , polymer chemistry , composite material , nanotechnology , polymer , organic chemistry , materials science , oceanography , geology , engineering
Heat sensitive color‐developing polyurethane microcapsules containing leucocompounds were prepared by interfacial polymerization. The effects of three determinative process parameters on the particle size distributions, surface morphologies, and heat sensitive color‐developing behavior of the microcapsules were investigated. As a result, the polyurethane microcapsules with a narrower distribution, rounder shape and better heat sensitive color‐developing property were prepared with increasing of the protective colloid content, emulsifying rate and emulsifier content. This was related with the surface roughness of the microcapsules.