|
Keywords
|
Styrene–methyl methacrylate copolymer, solubility, diffusivity, n-pentane, suspension
polymerization
|
|
Abstract
|
In this work, styrene–methyl methacrylate copolymer particles were synthesized by
suspension polymerization process with different copolymer compositions. A system
was designed to measure the solubility and diffusivity of n-pentane in the synthesized
copolymers. The designed system consisted of the self-sealing cell equipped to the
pressure and temperature controllers. The synthesized copolymer particles were
impregnated by n-pentane and their expansion were recorded visually. Furthermore,
the solubility and diffusivity of n-pentane in copolymer particles were measured by the
same apparatus. The effect of different foaming conditions on the solubility and diffusivity
of n-pentane in the samples were examined. It was concluded that the sorption
pressure and temperature have contradictory effects on the solubility and diffusivity of
n-pentane in styrene–methyl methacrylate copolymers at different sorption pressures.
It was concluded that with methyl methacrylate content increment in copolymer,
the diffusivity and dissolved n-pentane content in copolymer were reduced.
|