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Application of photopolymer to core‐hair type microgels with various hair length
Author(s) -
Takahashi Takanori,
Watanabe Hiroomi,
Miyagawa Nobukazu,
Takahara Shigeru,
Yamaoka Tsuguo
Publication year - 2002
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/pat.150
Subject(s) - photopolymer , materials science , core (optical fiber) , thixotropy , polymerization , viscosity , moiety , chemical engineering , polymer chemistry , polymer science , composite material , polymer , chemistry , organic chemistry , engineering
The new microgels, called “core‐hair” type microgels, were synthesized. They have a hair moiety consisting of the oxyhexano‐1,7‐diyl ( O ( CH 2 ) 5 C ( O )) group as a spacer and the acryloyl group for polymerization. The hair length depends on the number of spacer units, and affects the viscosity and the thixotropy index of the microgel. These core‐hair microgels show the pseudo‐plastic flow of a non‐Newtonian fluid with moderate to high dispersibility in water or alcoholic solvents. Due to their viscosities and dispersibilities, these core‐hair microgels are useful for photopolymer, e.g . for screen printing. Therefore, these microgels were actually applied to screen printing and confirmed pattern forming on a screen printing plate through water development. We now discuss the relation between the viscosity, the dispersibility, the photosensitivity, and the rate of photopolymerization to the hair length of the microgel. Copyright © 2001 John Wiley & Sons, Ltd.