@article{turgut_tuhin_toprakci_pasquinelli_spontak_toprakci_2018, title={Thermoplastic Elastomer Systems Containing Carbon Nanofibers as Soft Piezoresistive Sensors}, volume={3}, ISSN={["2470-1343"]}, DOI={10.1021/acsomega.8b01740}, abstractNote={Soft, wearable or printable strain sensors derived from conductive polymer nanocomposites (CPNs) are becoming increasingly ubiquitous in personal-care applications. Common elastomers employed in the fabrication of such piezoresistive CPNs frequently rely on chemically cross-linked polydiene or polysiloxane chemistry, thereby generating relatively inexpensive and reliable sensors that become solid waste upon application termination. Moreover, the shape anisotropy of the incorporated conductive nanoparticles can produce interesting electrical effects due to strain-induced spatial rearrangement. In this study, we investigate the morphological, mechanical, electrical, and electromechanical properties of CPNs generated from thermoplastic elastomer (TPE) triblock copolymer systems containing vapor-grown carbon nanofiber (CNF). Modulus-tunable TPE gels imbibed with a midblock-selective aliphatic oil exhibit well-behaved properties with increasing CNF content, but generally display nonlinear negative piezoresistance at different strain amplitudes and stretch rates due to nanofiber mobility upon CPN strain-cycling. In contrast, a neat TPE possessing low hard-block content yields a distinctive strain-reversible piezoresistive response, as well as low electrical hysteresis, upon cyclic deformation. Unlike their chemically cross-linked analogs, these physically cross-linked and thus environmentally benign CPNs are fully reprocessable by thermal and/or solvent means.}, number={10}, journal={ACS OMEGA}, author={Turgut, Ayse and Tuhin, Mohammad O. and Toprakci, Ozan and Pasquinelli, Melissa A. and Spontak, Richard J. and Toprakci, Hatice A. K.}, year={2018}, month={Oct}, pages={12648–12657} }
 @article{woloszczuk_tuhin_gade_pasquinelli_banaszak_spontak_2017, title={Complex Phase Behavior and Network Characteristics of Midblock-Solvated Triblock Copolymers as Physically Cross-Linked Soft Materials}, volume={9}, ISSN={["1944-8252"]}, DOI={10.1021/acsami.7b14298}, abstractNote={In the presence of a midblock-selective solvent, triblock copolymers not only self-organize but also form a molecular network. Thermoplastic elastomer gels constitute examples of such materials and serve as sealants and adhesives, as well as ballistic, microfluidic, and electroactive media. We perform Monte Carlo and dissipative particle dynamics simulations to investigate the phase behavior and network characteristics of these materials. Of particular interest is the existence of a truncated octahedral morphology that resembles the atomic arrangement of various inorganic species. Both simulation approaches quantify the midblock bridges responsible for network development and thus provide a detailed molecular picture of these composition-tunable soft materials.}, number={46}, journal={ACS APPLIED MATERIALS & INTERFACES}, author={Woloszczuk, Sebastian and Tuhin, Mohammad O. and Gade, Soumya R. and Pasquinelli, Melissa A. and Banaszak, Michal and Spontak, Richard J.}, year={2017}, month={Nov}, pages={39940–39944} }