Surface segregation in polymer blends due to stiffness disparity

Journal Article · Tue Mar 15 04:00:00 EST 1994 · Journal of Chemical Physics

DOI:https://doi.org/10.1063/1.466252· OSTI ID:142588

Yethiraj, A ^[1]; Kumar, S; Hariharan, A ^[2]; Schweizer, K S ^[3]

---

1. Theoretical Chemistry Institute and Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706 (United States)
2. Department of Materials Science and Engineering, Pennsylvania State University, University Park, Pennsylvania 16802 (United States)
3. Departments of Materials Science and Engineering and Chemistry, University of Illinois, Urbana, Illinois 61801 (United States)

The entropy-driven surface segregation of polymer blends is investigated via computer simulations and integral equation theory. The model system is composed of a binary blend at a hard wall where one of the components of the blend is stiffer than the other. It is found that, at meltlike densities relevant to experiments, both simulations and microscopic theory predict the segments of the stiffer chains segregate to the surface.

• Research Organization: University of Illinois
• DOE Contract Number: FG02-91ER45439
• OSTI ID: 142588
• Journal Information: Journal of Chemical Physics, Journal Name: Journal of Chemical Physics Journal Issue: 6 Vol. 100; ISSN JCPSA6; ISSN 0021-9606
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BINARY MIXTURES
CHAINS
COMPUTERIZED SIMULATION
DENSITY
ENTROPY
HARDNESS
INTEGRAL EQUATIONS
POLYMERS
SEGREGATION
SURFACE PROPERTIES
WALLS