Thermoplastic elastomer gels. I. Effects of composition and processing on morphology and gel behavior

Electromechanical Response of Nanostructured Polymer Systems with no Mechanical Pre‐Strain

“…The macromolecules used to produce the ENPs under investigation included three polystyrene-block-poly(ethylene-co-butylene)-block-polystyrene (SEBS) triblock copolymers differing in molecular weight but having comparable composition ( [19][20][21] ), the SEBS75 concentrations ranged from 25 to 50 wt.-% in 5 wt.-% increments. For comparison, the concentration of ENPs containing either SEBS161 or SEBS217 was 30 wt.-%.…”

“…For comparison, the concentration of ENPs containing either SEBS161 or SEBS217 was 30 wt.-%. Once these physical copolymer gels were generated, they were compression-molded at 180 8C and then slowly cooled to ambient temperature, [19] yielding elastomeric films measuring 0.5-0.6 mm thick. Electrical actuation of the resultant films was assessed at 0% pre-strain unless otherwise stated.…”

The relationship between mechanical properties and ballistic penetration depth in a viscoelastic gel

“…TPEGs are typically composed of a triblock copolymer with glassy, or crystalline, end blocks separated by a rubbery midblock and swollen with a midblock-selective solvent ( Fig. 1) (Laurer et al, 1998a(Laurer et al, , 1998bMowery et al, 1997). Above the glass transition temperature of the glassy block the material can flow.…”

Ternary Gels of a Polymer Blend and a Recycled Oil: Their Use as Bitumen Modifiers

“…From small-angle X-ray and neutron scattering measurements it is inferred that, in the general case of triblock copolymers, glassy micelles stabilize the gel, acting as physical crosslinks for the rubbery matrix containing the oil. [25,26] Therefore, this type of network is assumed to be the origin of gels based on copolymers similar to SBS, such as polystyrene-block-poly[ethylene-co-(1,2-butylene)]-blockpolystyrene (SEBS) [13] and poly(methyl methacrylate)-block-polybutadiene-block-poly(methyl methacrylate) (MBM). [15] A comparison of the effect of temperature on the elastic modulus and loss tangent of both binary gels, SBS/oil and EVA/oil, with ternary (1:1 SBS-EVA)/oil gels is shown in Figure 2.…”