Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/81656
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dc.contributor.authorKumar, Ben_US
dc.contributor.authorNoor, Nen_US
dc.contributor.authorThakur, Sen_US
dc.contributor.authorPan, Nen_US
dc.contributor.authorNarayana, Hen_US
dc.contributor.authorYan, Scen_US
dc.contributor.authorWang, Fen_US
dc.contributor.authorShah, Pen_US
dc.date.accessioned2020-02-10T12:28:27Z-
dc.date.available2020-02-10T12:28:27Z-
dc.date.issued2019-
dc.identifier.citationACS omega, 24 Sept. 2019, v. 4, no. 13, p. 15348-15358en_US
dc.identifier.issn2470-1343-
dc.identifier.urihttp://hdl.handle.net/10397/81656-
dc.description.abstractShape memory polymers (SMPs) are an exciting class of stimuli-responsive smart materials that demonstrate reactive and reversible changes in mechanical property, usually by switching between different states due to external stimuli. We report on the development of a polyurethane-based SMP foam for effective pressure redistribution that demonstrates controllable changes in dynamic pressure redistribution capability at a low transition temperature (similar to 24 degrees C)-ideally suited to matching modulations in body contact pressure for dynamic pressure relief (e.g., for alleviation or pressure ulcer effects). The resultant SMP material has been extensively characterized by a series of tests including stress-strain testing, compression testing, dynamic mechanical analysis, optical microscopy, UV-visible absorbance spectroscopy, variable-temperature areal pressure distribution, Fourier transform infrared spectroscopy, Raman spectroscopy, X-ray diffraction, differential scanning calorimetry, dynamic thermogravimetric analysis, and H-1 nuclear magnetic resonance spectroscopy. The foam system exhibits high responsivity when tested for plantar pressure modulation with significant potential in pressure ulcers treatment. Efficient pressure redistribution (similar to 80% reduction in interface pressure), high stress response (similar to 30% applied stress is stored in fixity and released on recovery), and excellent deformation recovery (similar to 100%) are demonstrated in addition to significant cycling ability without performance loss. By providing highly effective pressure redistribution and modulation when in contact with the body's surface, this SMP foam offers novel mechanisms for alleviating the risk of pressure ulcers.en_US
dc.description.sponsorshipInstitute of Textiles and Clothingen_US
dc.description.sponsorshipSchool of Nursingen_US
dc.description.sponsorshipUniveristy Research Facility in Chemical and Environmental Analysisen_US
dc.language.isoenen_US
dc.publisherAmerican Chemical Societyen_US
dc.relation.ispartofACS omegaen_US
dc.rightsCopyright © 2019 American Chemical Societyen_US
dc.rightsThis is an open access article published under an ACS AuthorChoice License (https://pubs.acs.org/page/policy/authorchoice_termsofuse.html), which permitscopying and redistribution of the article or any adaptations for non-commercial purpose.en_US
dc.rightsThe following publication Kumar, B., Noor, N., Thakur, S., Pan, N., Narayana, H., Yan, S. C., . . . Shah, P. (2019). Shape memory polyurethane-based smart polymer substrates for physiologically responsive, dynamic pressure (Re)distribution. ACS Omega, 4(13), 15348-15358 is available at https://dx.doi.org/10.1021/acsomega.9b01167en_US
dc.titleShape memory polyurethane-based smart polymer substrates for physiologically responsive, dynamic pressure (Re)distributionen_US
dc.typeJournal/Magazine Articleen_US
dc.identifier.spage15348-
dc.identifier.epage15358-
dc.identifier.volume4-
dc.identifier.issue13-
dc.identifier.doi10.1021/acsomega.9b01167-
dc.identifier.isiWOS:000488852700003-
dc.description.validate202002 bcrc-
dc.description.oapublished_final-
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