scholarly journals Mechanical Properties and Failure Behavior of Physically Assembled Triblock Copolymer Gels with Varying Midblock Length

2019 ◽  
Author(s):  
Satish Mishra ◽  
Rosa M. Badani Prado ◽  
Song Zhang ◽  
Thomas E. Lacy ◽  
Xiaodan Gu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Triblock Copolymer ◽  
Failure Behavior ◽  
Copolymer Gels

scholarly journals The effect of polymer chain length on the mechanical properties of triblock copolymer gels

2014 ◽  
Vol 612 ◽  
pp. 157-161 ◽  
Author(s):  
Tanya L. Chantawansri ◽  
Timothy W. Sirk ◽  
Randy Mrozek ◽  
Joseph L. Lenhart ◽  
Martin Kröger ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Chain Length ◽  
Polymer Chain ◽  
Triblock Copolymer ◽  
Copolymer Gels

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

scholarly journals EFFECT OF PROCESS PARAMETERS ON THE MECHANICAL PROPERTIES AND FAILURE BEHAVIOR OF SPOT WELDED LOW CARBON STEEL

2015 ◽  
Vol 8 ◽  
pp. 1489-1497 ◽  
Author(s):  
Farizah Adliza Ghazali ◽  
◽  
Yupiter H.P. Manurung ◽  
Mohamed Ackiel Mohamed ◽  
Siti Khadijah Alias ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Steel ◽  
Process Parameters ◽  
Low Carbon Steel ◽  
Failure Behavior ◽  
Low Carbon ◽  
Spot Welded

Self-Assembly and Stress Relaxation in Acrylic Triblock Copolymer Gels

2007 ◽  
Vol 40 (4) ◽  
pp. 1218-1226 ◽  
Author(s):  
Michelle E. Seitz ◽  
Wesley R. Burghardt ◽  
K. T. Faber ◽  
Kenneth R. Shull
Keyword(s):  
Stress Relaxation ◽  
Self Assembly ◽  
Triblock Copolymer ◽  
Copolymer Gels

Influence of Morphology on Mechanical Properties under the Combined Use of SEBS and EOr as Elastomer in PP/Elastomer/Filler Ternary Composites

2011 ◽  
Vol 19 (9) ◽  
pp. 725-732
Author(s):  
Shigeki Hikasa ◽  
Kazuya Nagata ◽  
Yoshinobu Nakamura
Keyword(s):  
Mechanical Properties ◽  
Impact Strength ◽  
Triblock Copolymer ◽  
Continuous Phase ◽  
Dispersed Phase ◽  
Impact Properties ◽  
Combined Use ◽  
Poly Ethylene ◽  
Almost All ◽  
The Impact

The influences of combined elastomers on impact properties and morphology of polypropylene (PP)/elastomer/CaCO3 ternary composites were investigated. In the case that polystyrene- block-poly(ethylene-butene)- block-polystyrene triblock copolymer (SEBS) and poly(ethylene- co-octene) (EOR) were used as elastomers, a sea-island structure consisting of EOR dispersed phase and SEBS continuous phase was formed. The elastomer and the CaCO3 particles were separately dispersed in PP matrix. In the case that carboxylated SEBS (C-SEBS) and EOR were used, the C-SEBS particles were dispersed in the EOR particles. Almost all of the CaCO3 particles were dispersed in the PP matrix, although some of the CaCO3 particles were dispersed in the C-SEBS/EOR combined particles. Impact strength improved with an increase of incorporated CaCO3 particles. The effect of elastomer on the impact strength was SEBS ≥ SEBS/EOR > EOR = C-SEBS/EOR > C-SEBS. The morphology formed by elastomer and CaCO3 particles strongly affected the impact properties of the ternary composites.

“Butterfly”-like patterns of triblock copolymer gels as observed by small-angle neutron scattering

1996 ◽  
Vol 34 (16) ◽  
pp. 2739-2745 ◽  
Author(s):  
N. Mischenko ◽  
K. Reynders ◽  
K. Mortensen ◽  
N. Overberg ◽  
H. Reynaers
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Triblock Copolymer ◽  
Copolymer Gels
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