文档介绍：Phase Transitions of Polymer Blends and Block Copolymer
Melts in Thin Films
K. Binder
Institut für Physik, Johannes Gutenberg-Universität Mainz, Staudingerweg 7,
D-55099 Mainz, Germany
e-mail: ******@-
1 Introduction. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
2 Theoretical Methods . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Mean-Field Theory of Phase Separation in Thin Films. . . . . . . . 8
Block Copolymers in the Weak Segregation Limit . . . . . . . . . . 22
Block Copolymers in the Strong Segregation Limit. . . . . . . . . . 37
Survey of Results Obtained with the Self-Consistent Field Theory . . 41
Concepts on Interfaces in Confined Geometry . . . . . . . . . . . . 47
Simulation of Polymer Blends in Thin Films . . . . . . . 51
Simulation of Confined Block Copolymers . . . . . . . . 60
Dynamics of Phase Separation in Films: an Introduction . . . . . . 65
3 Outlook on Pertinent Experimental Results. . . . . . . . . . . . . . 69
Polymer Blends in Thin Film Geometry in Thermal Equilibrium . . 69
Ordering in Thin Films of Block Copolymers . . . . . . . . . . . . . 73
Dynamics of Phase Separation . . . . . . . . . . . . . . . . . . . . . 76
4 Discussion and Conclusions. . . . . . . . . . . . . . . . . . . . . . . 79
5 References . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
1
Introduction
Polymer mixtures and block copolymers in thin film geometry find much recent
attention, both theoretically [1–63] and experimentally [5,7,8,29,64–122]. This
interest arises because of various applications of thin polymer films in materials
science (adhesive properties, lubrication, coatings, etc.) [123,124], but also from
the point of view of basic science: ., from suitable measurements of thin films
of polymer mixtures one can extract information on bulk phase behavior (.
[70,81]), interfacial widths (. [84,125]), and