Journal ArticleDOI
Structural Change Accompanied by Plastic-to-Rubber Transition of SBS Block Copolymers
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TLDR
In this paper, an SBS block copolymer and a blend of the copolymers with homopolystyrene were investigated in regard to the structural change accompaning the plastic-to-rubber transition and the healing process.Abstract:
It was shown that some block copolymers and their blends with corresponding homopolymers exhibit stress softening. When the specimens are stretched beyond the yield point, they become rubbery and exhibit high elasticity and large recoverable deformation, as a result of a breakup of their original rigid structure. Moreover, the deformed specimens heal, in that the properties of the original undeformed specimens are recovered upon removal of applied stress. This effect was attributed to the reformation of the original microdomain structure. In this work, we investigated an SBS block copolymer and a blend of the copolymer with homopolystyrene in regard to the structural change accompaning the plastic-to-rubber transition and the healing process. Electron microscopy and small angle X-ray scattering (SAXS) were used.read more
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Journal ArticleDOI
Directing the self-assembly of block copolymers
TL;DR: A review of block copolymers can be found in this paper, which summarizes existing applications and alignment techniques and provides an outlook toward the future. But, with few exceptions, the alignment methods are general to a specific morphology or set of morphologies.
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Impact of Morphological Orientation in Determining Mechanical Properties in Triblock Copolymer Systems
TL;DR: In this article, several types of orientation techniques are reviewed for block copolymers with spherical, cylindrical, and lamellar morphologies, with emphasis on the clarif...
Journal ArticleDOI
Deformation of Oriented Lamellar Block Copolymer Films
TL;DR: In this paper, the deformation mechanism of a triblock copolymer was studied for a structure of alternating glassy−rubbery layers at different orientations of deformation axis relative to the layer normal.
Journal ArticleDOI
Influence of molecular architecture on morphology and micromechanical behavior of styrene/butadiene block copolymer systems
TL;DR: In this paper, phase behavior and the micromechanical deformation mechanisms active in amorphous styrene/butadiene block copolymers were examined with respect to the molecular architecture.
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Switchable Catalysis Improves the Properties of CO2-Derived Polymers: Poly(cyclohexene carbonate-b-ε-decalactone-b-cyclohexene carbonate) Adhesives, Elastomers, and Toughened Plastics.
Gregory S. Sulley,Georgina L. Gregory,Thomas T. D. Chen,Leticia Peña Carrodeguas,Gemma Trott,Alba Santmarti,Koon-Yang Lee,Nicholas J. Terrill,Charlotte K. Williams +8 more
TL;DR: A new catalytic polymerization process is reported that selectively and efficiently yields degradable ABA-block polymers, incorporating 6–23 wt % CO2, and improves upon the properties of poly(cyclohexene carbonate) and shows good thermal stability, high toughness, and very high elongation at break.