TY - JOUR
T1 - Effect of interfaces on the crystallization behavior of PDMS
AU - Dollase, T.
AU - Wilhelm, M.
AU - Spiess, H. W.
AU - Yagen, Y.
AU - Yerushalmi-Rozen, R.
AU - Gottlieb, M.
N1 - Funding Information:
We would like to thank Profs. J. Baschnagel, G. Strobl, B. Cabane, and I. Szleifer for illuminating discussions, and Prof. Y. Cohen for his remarks. We also thank Mettler Toledo, and especially Dr. R. Riesen for discussing instrumental aspects with us. We would like to express our gratitude to T. Wagner for synthesizing the PDMS 16K. TD acknowledges a fellowship from the MINERVA foundation. This work was funded through the Infrastructure Research Program of the Israel Ministry of Science and Culture (grant no. 8625), and the United States-Israel Binational Science Foundation (BSF 2000124).
PY - 2003/4/1
Y1 - 2003/4/1
N2 - The reversible thermal behavior of a non-entangled semicrystalline polymer, poly(dimethylsiloxane), PDMS, was investigated in the presence of sub-micron particles. Filled polymer systems of this type are characterized by a large surface-to-volume ratio but lack the external confinement that is typical for a thin film geometry. Differential-scanning calorimetry (DSC) measurements indicate that the presence of the nanometric solid additives enhances the crystallization rate as compared to native PDMS melts. Different types of additives and surface interactions resulted in a similar effect, suggesting that the origin of the enhanced crystallinity is non-specific. The effect is attributed to entropic interactions in the boundary layer.
AB - The reversible thermal behavior of a non-entangled semicrystalline polymer, poly(dimethylsiloxane), PDMS, was investigated in the presence of sub-micron particles. Filled polymer systems of this type are characterized by a large surface-to-volume ratio but lack the external confinement that is typical for a thin film geometry. Differential-scanning calorimetry (DSC) measurements indicate that the presence of the nanometric solid additives enhances the crystallization rate as compared to native PDMS melts. Different types of additives and surface interactions resulted in a similar effect, suggesting that the origin of the enhanced crystallinity is non-specific. The effect is attributed to entropic interactions in the boundary layer.
KW - Polymer crystallization
KW - Surface effects in polymers
UR - http://www.scopus.com/inward/record.url?scp=0037375401&partnerID=8YFLogxK
U2 - 10.1023/A:1022174712707
DO - 10.1023/A:1022174712707
M3 - Article
AN - SCOPUS:0037375401
SN - 0927-7056
VL - 11
SP - 199
EP - 209
JO - Interface Science
JF - Interface Science
IS - 2
ER -