TY - JOUR
T1 - Solvent transport in spherical polymer-penetrant systems
AU - Lin, Jenn Sen
AU - Hwang, Chi Chuan
AU - Lin, Chao Ming
AU - Lai, Juin Yih
PY - 2001
Y1 - 2001
N2 - This paper studies the transport phenomenon of solvent-penetrant systems in spherical glassy polymers. This problem involves a moving interface between a glassy region and rubbery region, the solution of which has traditionally proven very difficult. In this paper, the perturbation method is used for the complete time history of the penetrant front for a small range of perturbation control parameter ε. Then, a local similarity numerical simulation is used to expand the results for a large range of ε. Results reveal that interface velocity near time = 0 is constant regardless of sphere dimensions, and that the interface velocity decreases after its initial constant phase, accelerating again as the interface position approaches the center of the sphere. With the proposed technique, the penetration times for different radii can be predicted.
AB - This paper studies the transport phenomenon of solvent-penetrant systems in spherical glassy polymers. This problem involves a moving interface between a glassy region and rubbery region, the solution of which has traditionally proven very difficult. In this paper, the perturbation method is used for the complete time history of the penetrant front for a small range of perturbation control parameter ε. Then, a local similarity numerical simulation is used to expand the results for a large range of ε. Results reveal that interface velocity near time = 0 is constant regardless of sphere dimensions, and that the interface velocity decreases after its initial constant phase, accelerating again as the interface position approaches the center of the sphere. With the proposed technique, the penetration times for different radii can be predicted.
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U2 - 10.1016/S0009-2509(00)00410-3
DO - 10.1016/S0009-2509(00)00410-3
M3 - Article
AN - SCOPUS:0035067243
SN - 0009-2509
VL - 56
SP - 151
EP - 156
JO - Chemical Engineering Science
JF - Chemical Engineering Science
IS - 1
ER -