Yuhao Jiang, Jialan Yao, Chengfei Zhu*
Journal of Renewable Materials, Vol.10, No.1, pp. 135-148, 2022, DOI:10.32604/jrm.2021.016304
Abstract Poly(urea-formaldehyde) (PUF) microcapsules were prepared by in-situ polymerization with four different processes in this paper. The chemical composition, surface morphology, particle size distribution, and thermal stability were characterized by FTIR, SEM, particle size analyzer, and TGA, respectively. The results demonstrated
that the agglomeration of the PUF microcapsules was related to the agglomeration of the emulsion particles
caused by the changes of emulsion interface during the shell polymerization. Due to the slow deposition of
the shell material, the PUF microcapsules with the core-shell structure prepared by the process with ammonium
chloride as the last additive showed good dispersibility with an average… More >
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