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SANS Studies of the Configurations of Single Chains in Heterogeneous Block Copolymers

Published online by Cambridge University Press:  26 February 2011

C. V. Berney ,
P. Cheng ,
P. Kofinas  and
R. E. Cohen
C. V. Berney
Affiliation:
Massachusetts Institute of Technology Cambridge, MA 02139
P. Cheng
Affiliation:
Massachusetts Institute of Technology Cambridge, MA 02139
P. Kofinas
Affiliation:
Massachusetts Institute of Technology Cambridge, MA 02139
R. E. Cohen
Affiliation:
Massachusetts Institute of Technology Cambridge, MA 02139
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Abstract

Small-angle neutron scattering studies of polystyrene-polybutadiene diblock copolymers of spherical morphology are discussed, with emphasis on the effect of this morphology on the spatial organization of the polymer chains. Three particular cases are examined: (i) the distribution within the matrix of added (matrix) homopolymer, (ii) the distribution within the spherical microdomains of added (microdomain) homopolymer, and (iii) isotopic effects occurring in the B domains when a B-deuterated diblock SBd is blended with a normal sample SB. Deviations from ideal mixing are found in all three cases.

Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 79: Symposium F – Scattering, Deformation and Fracture in Polymers , 1986 , 175
Copyright
Copyright © Materials Research Society 1987

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