TY - GEN
T1 - Microstructure effects on the equilibrium phase behavior of elastomer blends studied by SANS
AU - Han, Charles C.
AU - Sakurai, Shinichi
AU - Jinnai, Hiroshi
AU - Hasegawa, Hirokazu
AU - Hashimoto, Takeji
PY - 1993/1/1
Y1 - 1993/1/1
N2 - In this paper, the basic procedure for using SANS measurements to extract the temperature and compositional dependence of the Xblend(=Xeff) parameter will be discussed. This Xblend is obtained from the scattering structure factor S(q), according to the Random-Phase Approximation, and can also be analyzed by the mean-field random copolymer theory to obtain the temperature and composition dependence of individual monomer pair interactions. In copolymer cases, especially for elastomer (diene) blends and polyolefin blends, this methodology offers a simple straightforward procedure to obtain the phase diagram. With the temperature and composition dependence of the individual pair interaction parameters, this procedure also offers the prediction of the phase diagram and free energy of mixing for polymer pairs with known molecular weight and microstructure characterization.
AB - In this paper, the basic procedure for using SANS measurements to extract the temperature and compositional dependence of the Xblend(=Xeff) parameter will be discussed. This Xblend is obtained from the scattering structure factor S(q), according to the Random-Phase Approximation, and can also be analyzed by the mean-field random copolymer theory to obtain the temperature and composition dependence of individual monomer pair interactions. In copolymer cases, especially for elastomer (diene) blends and polyolefin blends, this methodology offers a simple straightforward procedure to obtain the phase diagram. With the temperature and composition dependence of the individual pair interaction parameters, this procedure also offers the prediction of the phase diagram and free energy of mixing for polymer pairs with known molecular weight and microstructure characterization.
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M3 - Conference contribution
AN - SCOPUS:0027229047
SN - 0841226644
T3 - Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Materials Science and Engineering
SP - 278
EP - 279
BT - Polymeric Materials Science and Engineering, Proceedings of the ACS Division of Polymeric Materials Science and Engineering
PB - Publ by ACS
T2 - Proceedings of the American Chemical Society Division of Polymeric Materials - Science and Engineering
Y2 - 18 April 1993 through 23 April 1993
ER -