Molecular weight effects on phase behavior of blends of poly(phenylene oxide) with styrenic triblock copolymers

1988 ◽  
Vol 21 (9) ◽  
pp. 2794-2800 ◽  
Author(s):  
P. S. Tucker ◽  
J. W. Barlow ◽  
D. R. Paul
Keyword(s):  
Molecular Weight ◽  
Phase Behavior ◽  
Triblock Copolymers ◽  
Phenylene Oxide

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.

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

Synthesis and thermal properties of triblock copolymers of methyl methacrylate using combination of anionic and controlled radical polymerization: Poly(methyl methacrylate) center block bearing different microstructures

e-Polymers ◽  
2012 ◽  
Vol 12 (1) ◽  
Author(s):  
Zhengji Song ◽  
Carole Pelletier ◽  
Yinghua Qi ◽  
Jasim Ahmed ◽  
Sunil K. Varshney ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Thermal Properties ◽  
Block Copolymers ◽  
Methyl Methacrylate ◽  
Radical Polymerization ◽  
Triblock Copolymers ◽  
Controlled Radical Polymerization ◽  
Alkyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
H Nmr

AbstractABA and/or ABC type triblock copolymers were synthesized by living anionic and controlled radical polymerization in which poly(methyl methacrylate) was used as central block. The structural composition of these block copolymers were determined by 1H NMR. The block length/molecular weight and microstructure of these polymers were measured by SEC. The microstructure of resultant central alkyl methacrylate block can be tailored from highly syndiotactic to highly isotactic structure by varying the solvent and/or initiator. The thermal and rheological properties of center poly(methyl methacrylate) block and poly(styreneb- methyl methacrylate-b- styrene) tri block copolymers were studied in detail.

Complex Phase Behavior and Network Characteristics of Midblock-Solvated Triblock Copolymers as Physically Cross-Linked Soft Materials

2017 ◽  
Vol 9 (46) ◽  
pp. 39940-39944 ◽  
Author(s):  
Sebastian Woloszczuk ◽  
Mohammad O. Tuhin ◽  
Soumya R. Gade ◽  
Melissa A. Pasquinelli ◽  
Michal Banaszak ◽  
...  
Keyword(s):  
Phase Behavior ◽  
Triblock Copolymers ◽  
Soft Materials ◽  
Complex Phase ◽  
Network Characteristics
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