TY - JOUR
T1 - Morphological differences in semicrystalline polymers
T2 - Implications for local dynamics and chain diffusion
AU - Yao, Y. F.
AU - Graf, R.
AU - Spiess, H. W.
AU - Lippits, D. R.
AU - Rastogi, S.
PY - 2007/12/26
Y1 - 2007/12/26
N2 - Morphological differences in semicrystalline polymers due to different crystallization conditions have implications for the chain motion. The local dynamics in the noncrystalline regions of solution-crystallized linear polyethylene is lower than in a melt-crystallized sample, but the opposite is observed for chain diffusion between noncrystalline and crystalline regions. The activation enthalpy for chain diffusion, however, is the same, indicating that entropic differences in the noncrystalline regions strongly influence the chain diffusion of the same polymer in different morphologies.
AB - Morphological differences in semicrystalline polymers due to different crystallization conditions have implications for the chain motion. The local dynamics in the noncrystalline regions of solution-crystallized linear polyethylene is lower than in a melt-crystallized sample, but the opposite is observed for chain diffusion between noncrystalline and crystalline regions. The activation enthalpy for chain diffusion, however, is the same, indicating that entropic differences in the noncrystalline regions strongly influence the chain diffusion of the same polymer in different morphologies.
UR - https://www.scopus.com/pages/publications/37649010494
U2 - 10.1103/PhysRevE.76.060801
DO - 10.1103/PhysRevE.76.060801
M3 - 文章
AN - SCOPUS:37649010494
SN - 1539-3755
VL - 76
JO - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
JF - Physical Review E - Statistical, Nonlinear, and Soft Matter Physics
IS - 6
M1 - 060801
ER -