TY - JOUR
T1 - One-step thiol-isocyanate dispersion polymerization
T2 - Preparation of uniform, cross-linked and functional particles
AU - Tan, Jiaojun
AU - Li, Chunmei
AU - Dan, Shaomin
AU - Li, Hui
AU - Gu, Junwei
AU - Zhang, Baoliang
AU - Zhang, Hepeng
AU - Zhang, Qiuyu
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/11/15
Y1 - 2016/11/15
N2 - Uniform and highly cross-linked particles with functional groups are very useful but difficult to be achieved in traditional dispersion polymerization. Herein, we develop a one-step dispersion polymerization based on thiol-isocyanate reaction to prepare such particles. This polymerization proceeds energy-efficiently at ambient temperature without additional catalyst/initiator or UV treatment, achieves high monomer conversion and has little side reaction. It is demonstrated that particles with size ranging from 1.8 to 8 μm can be fabricated via adjusting the concentration of stabilizer and ratio of monomer/ethanol. The generated thiourethane linkages endow particles with high glass transition temperature (Tg) and uniform networks. In addition, the particles can be intrinsically functionalized and available for further modification due to thiol-isocyanate step-growth mechanism. As an attempt to perform thiol-isocyanate reaction in dispersion polymerization, this method offers feasibility for preparing uniform, functional and highly cross-linked particles in one-step dispersion polymerization.
AB - Uniform and highly cross-linked particles with functional groups are very useful but difficult to be achieved in traditional dispersion polymerization. Herein, we develop a one-step dispersion polymerization based on thiol-isocyanate reaction to prepare such particles. This polymerization proceeds energy-efficiently at ambient temperature without additional catalyst/initiator or UV treatment, achieves high monomer conversion and has little side reaction. It is demonstrated that particles with size ranging from 1.8 to 8 μm can be fabricated via adjusting the concentration of stabilizer and ratio of monomer/ethanol. The generated thiourethane linkages endow particles with high glass transition temperature (Tg) and uniform networks. In addition, the particles can be intrinsically functionalized and available for further modification due to thiol-isocyanate step-growth mechanism. As an attempt to perform thiol-isocyanate reaction in dispersion polymerization, this method offers feasibility for preparing uniform, functional and highly cross-linked particles in one-step dispersion polymerization.
KW - Cross-linked particles
KW - Dispersion polymerization
KW - One-step method
KW - Thiol-isocyanate
UR - http://www.scopus.com/inward/record.url?scp=84976901295&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2016.06.118
DO - 10.1016/j.cej.2016.06.118
M3 - 文章
AN - SCOPUS:84976901295
SN - 1385-8947
VL - 304
SP - 461
EP - 468
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
ER -