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The surface area of bulk poly(vinyl chloride)
Author(s) -
Salovey R.,
Cortellucci R.,
Roaldi A.
Publication year - 1974
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760140207
Subject(s) - vinyl chloride , materials science , porosimetry , scanning electron microscope , porosity , adsorption , polyvinyl chloride , polymerization , analytical chemistry (journal) , specific surface area , chemical engineering , composite material , polymer chemistry , chromatography , porous medium , copolymer , chemistry , polymer , organic chemistry , catalysis , engineering
The porosity of poly (vinyl chloride) (PVC) resin particles produced in bulk polymerization is sensitive to polymerization conditions. Using scanning electron microscopy, 60μ spherical beads of PVC are shown to be composed of loosely packed 1μ spherical subparticles. This complex morphology is characterized by a variability in surface area. The surface area of bulk PVC materials can be measured by a chromatographic technique. The elution time of n‐octane as a probe molecule on PVC packed columns is simply related to PVC surface area. At approximately constant particle size (measured by Coulter counter and optical microscopy), surface areas measured by argon adsorption are correlated to chromatographic elution times. The bulk density, plastisol viscosity and pore volume (from mercury penetration porosimetry) are determined and related to specific surface area.