Thermotropic Polypeptides. VIII. Anomalous Phase Behavior in Low Molecular-Weight Poly(.GAMMA.-octadecyl L-glutamate).

1992 ◽  
Vol 24 (7) ◽  
pp. 709-713 ◽  
Author(s):  
Junji Watanabe ◽  
Yoshimasa Takashina
Keyword(s):  
Molecular Weight ◽  
Phase Behavior ◽  
Low Molecular Weight

Order−Disorder Transition, Microdomain Structure, and Phase Behavior in Binary Mixtures of Low Molecular Weight Polystyrene-block-polyisoprene Copolymers

1997 ◽  
Vol 30 (19) ◽  
pp. 5832-5842 ◽  
Author(s):  
Daisuke Yamaguchi ◽  
Takeji Hashimoto ◽  
Chang Dae Han ◽  
Deog Man Baek ◽  
Jin Kon Kim ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Phase Behavior ◽  
Binary Mixtures ◽  
Low Molecular Weight ◽  
Disorder Transition ◽  
Microdomain Structure

Phase Behavior of Binary Blends of High Molecular Weight Diblock Copolymers with a Low Molecular Weight Triblock

2008 ◽  
Vol 41 (15) ◽  
pp. 5785-5792 ◽  
Author(s):  
Rafal A. Mickiewicz ◽  
Eleftherios Ntoukas ◽  
Apostolos Avgeropoulos ◽  
Edwin L. Thomas
Keyword(s):  
Molecular Weight ◽  
Phase Behavior ◽  
High Molecular Weight ◽  
Diblock Copolymers ◽  
Low Molecular Weight ◽  
Binary Blends

Phase Behavior of Triblock Copolymers upon Incorporation of Non-Parent, Midblock-Associating Additives

1996 ◽  
Vol 461 ◽  
Author(s):  
J. H. Laurer ◽  
J. F. Mulling ◽  
R. Bukovnik ◽  
R. J. Spontak
Keyword(s):  
Molecular Weight ◽  
Block Copolymer ◽  
Phase Behavior ◽  
Triblock Copolymer ◽  
Triblock Copolymers ◽  
Thermoplastic Elastomer ◽  
Low Molecular Weight ◽  
Repulsive Interactions

ABSTRACTAddition of a block-selective homopolymer to a microphase-ordered block copolymer is known to result in preferential swelling of the chemically compatible microdomain. In this work, we examine the miscibility between a triblock copolymer and a relatively low-molecular-weight, chemically dissimilar, midblock-associating homopolymer and demonstrate that the homopolymer molecules residing in the swollen midblock matrix self-assemble to avoid repulsive interactions with neighboring microdomains. We extend this investigation to include systems composed of a very low-molecular-weight, midblock-associating additive (an oil). At high oil concentrations, the glassy copolymer endblocks micellize, resulting in the formation of a thermoplastic elastomer gel.

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