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Triboelectric charge control of polymer microspheres by surface modification using heterocoagulation
Author(s) -
Shiozaki M.,
Tokuno T.
Publication year - 1993
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/pi.4990300213
Subject(s) - triboelectric effect , copolymer , styrene , materials science , methacrylate , polymer , chemical engineering , surface modification , tec , polymer chemistry , emulsion , microsphere , surface charge , methyl methacrylate , chemistry , composite material , ionosphere , physics , astronomy , engineering
Abstract A new technique to control the triboelectric charge (TEC) of polymer microspheres is proposed. Polymer microspheres (PMs) were prepared by three‐component suspension copolymerization of styrene (S), 2‐ethylhexyl methacrylate (EHMA) and dimethylaminoethyl methacrylate (DM). Emulsion particles (EPs) for surface modification were prepared by emulsifier‐free three‐component emulsion copolymerization of S, EHMA and sodium styrene sulfonate (NaSS). PMs were covered with EPs by a process similar to the ‘stepwise heterocoagulation technique’ (Okubo, M., He, Y. & Ichikawa, K., Colloid Polym. Sci. , 269 (1991) 125). The value of TEC of modified microspheres varied from ‐ 30 μC/g to ‐ 60 μC/g with increasing NaSS content of EPs from 3wt% to 6wt%, though unmodified particles had small values of TEC. This fact suggests that the surface modification used can lead to the preparation of particles having a desired TEC.