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Suspended emulsion, a new process for vinyl chloride polymerization: Morphology control through surface active additives
Author(s) -
Vindevoghel Ph.,
Nogues P.,
Guyot A.
Publication year - 1994
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1994.070521305
Subject(s) - chemical engineering , emulsion polymerization , polymer , monomer , polymerization , emulsion , materials science , polymer chemistry , pulmonary surfactant , phase (matter) , particle (ecology) , agglomerate , particle size , particle size distribution , morphology (biology) , chemistry , organic chemistry , composite material , oceanography , engineering , geology , biology , genetics
Abstract Suspended emulsion is a new polymerization process in which a water phase containing the initiator is suspended in an organic phase containing the monomer; the polymer formed is insoluble in both the organic and water phase. The final morphology of the polymer is a powder of grains (around 100–300 microns) formed with agglomerates of primary particles (around 1 micron). This article describes the effects of small amounts of either suspending agents (water‐soluble polymers) or surfactants. These effects concern mainly the morphology (grain and particle size), but also the polymerization kinetics. A rather homogeneous distribution of grains and particles inside the grain may be obtained by using a cellulosic polymer as the suspending agent and an anionic surfactant such as sodium dodecyl sulfate. © 1994 John Wiley & Sons, Inc.