Enhancement of Mechanical Properties of ABA Triblock Copolymer-Based Elastomers by Incorporating Partial Cross-Links on the Soft Bridge Chains

2021 ◽  
Author(s):  
Isamu Kawarazaki ◽  
Mikihiro Hayashi
Keyword(s):  
Mechanical Properties ◽  
Triblock Copolymer ◽  
Cross Links ◽  
Aba Triblock Copolymer

scholarly journals Controlling nanostructure and mechanical properties in triblock copolymer/monomer blends via reaction-induced phase transitions

Soft Matter ◽  
2021 ◽  
Author(s):  
Vincent M. Torres ◽  
Jacob A. LaNasa ◽  
Bryan D. Vogt ◽  
Robert J. Hickey
Keyword(s):  
Mechanical Properties ◽  
Phase Transitions ◽  
Triblock Copolymer ◽  
Polymer Grafting ◽  
Aba Triblock Copolymer ◽  
Grafting From

In situ polymer grafting from the mid-block of an ABA triblock copolymer leads to morphology transitions and enhanced mechanical properties.

Functionalization of triblock copolymer elastomers by cross-linking the end blocks via trans-N-alkylation-based exchangeable bonds

2020 ◽  
Vol 11 (10) ◽  
pp. 1713-1719 ◽  
Author(s):  
Mikihiro Hayashi ◽  
Lei Chen
Keyword(s):  
Triblock Copolymer ◽  
Cross Linking ◽  
Cross Links ◽  
Aba Triblock Copolymer

Functionalization of ABA triblock copolymer-based materials is achieved by incorporating dynamic covalent bonded cross-links via trans-N-alkylation in glassy A block domains.

Sticky ends in a self-assembling ABA triblock copolymer: the role of ureas in stimuli-responsive hydrogels

2019 ◽  
Vol 4 (1) ◽  
pp. 91-102 ◽  
Author(s):  
Ryan T. Shafranek ◽  
Joel D. Leger ◽  
Song Zhang ◽  
Munira Khalil ◽  
Xiaodan Gu ◽  
...  
Keyword(s):  
Self Assembly ◽  
Viscoelastic Properties ◽  
Triblock Copolymer ◽  
Thermal Response ◽  
Stimuli Responsive ◽  
Self Assembling ◽  
Polymeric Hydrogels ◽  
Aba Triblock Copolymer ◽  
Responsive Hydrogels

Directed self-assembly in polymeric hydrogels allows tunability of thermal response and viscoelastic properties.

Association and physical gelation of ABA triblock copolymer in selective solvent

Polymer ◽  
2003 ◽  
Vol 44 (18) ◽  
pp. 5303-5310 ◽  
Author(s):  
Katsuhiro Inomata ◽  
Daisuke Nakanishi ◽  
Ai Banno ◽  
Eiji Nakanishi ◽  
Yosuke Abe ◽  
...  
Keyword(s):  
Triblock Copolymer ◽  
Selective Solvent ◽  
Physical Gelation ◽  
Aba Triblock Copolymer

scholarly journals Decoupling of Mechanical and Transport Properties in Organogels via Solvent Variation

Gels ◽  
2021 ◽  
Vol 7 (2) ◽  
pp. 61
Author(s):  
Kenneth P. Mineart ◽  
Cameron Hong ◽  
Lucas A. Rankin
Keyword(s):  
Mechanical Properties ◽  
Mechanical Behavior ◽  
Transdermal Drug Delivery ◽  
Triblock Copolymer ◽  
Polymer Concentration ◽  
Mineral Oil ◽  
Solute Diffusion ◽  
Oil Viscosity ◽  
Chain Entanglement ◽  
Mineral Oils

Organogels have recently been considered as materials for transdermal drug delivery media, wherein their transport and mechanical properties are among the most important considerations. Transport through organogels has only recently been investigated and findings highlight an inextricable link between gels’ transport and mechanical properties based upon the formulated polymer concentration. Here, organogels composed of styrenic triblock copolymer and different aliphatic mineral oils, each with a unique dynamic viscosity, are characterized in terms of their quasi-static uniaxial mechanical behavior and the internal diffusion of two unique solute penetrants. Mechanical testing results indicate that variation of mineral oil viscosity does not affect gel mechanical behavior. This likely stems from negligible changes in the interactions between mineral oils and the block copolymer, which leads to consistent crosslinked network structure and chain entanglement (at a fixed polymer concentration). Conversely, results from diffusion experiments highlight that two penetrants—oleic acid (OA) and aggregated aerosol-OT (AOT)—diffuse through gels at a rate inversely proportional to mineral oil viscosity. The inverse dependence is theoretically supported by the hydrodynamic model of solute diffusion through gels. Collectively, our results show that organogel solvent variation can be used as a design parameter to tailor solute transport through gels while maintaining fixed mechanical properties.

Structural Development and Adhesion of Acrylic ABA Triblock Copolymer Gels

1999 ◽  
Vol 32 (21) ◽  
pp. 7251-7262 ◽  
Author(s):  
Cynthia M. Flanigan ◽  
Alfred J. Crosby ◽  
Kenneth R. Shull
Keyword(s):  
Triblock Copolymer ◽  
Structural Development ◽  
Copolymer Gels ◽  
Aba Triblock Copolymer
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