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Robins LI, Contreras L, Clark A, Kim KT, Nedelea AG, Gullickson G, Maddocks SE, Williams JF. Modification of Superabsorbent Polymer Granules and Fibers for Antimicrobial Efficacy and Malodor Control. ACS OMEGA 2024; 9:10201-10206. [PMID: 38463253 PMCID: PMC10918649 DOI: 10.1021/acsomega.3c07164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2023] [Revised: 02/02/2024] [Accepted: 02/08/2024] [Indexed: 03/12/2024]
Abstract
Superabsorbent polymer (SAP) granules, typically used in personal care devices such as diapers, incontinence devices, hygiene pads, and wound dressings, and granular particles of zeolite and bentonite were each subjected to modification by exposure to solutions of 1-chloro-2,2,5,5-tetramethyl-4-imidazolidinone (MC) in ethanol at room temperature. The air-dried granules showed newly acquired properties attributable to the presence of active chlorine (Cl+). The treated particles effectively oxidized the malodorant 3-mercapto-3-methylbutanol (3M3MB). MC-treated granules inactivated urease, a microbial exoenzyme commonly involved in ammonia production. Modified SAP granules and superabsorbent fibers (SAFs) showed powerful antibacterial activity in an in vitro chronic wound model. The results suggest that processing of SAP granules and SAFs by this simple method at an industrial scale could add value to their widespread use in a variety of personal hygiene devices and specifically to the improvement of chronic wound care.
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Affiliation(s)
- Lori I. Robins
- Physical
Sciences Division, University of Washington
Bothell, Bothell, Washington 98011, United States
| | - Luis Contreras
- Elson
S. Floyd College of Medicine, Washington
State University, Spokane, Washington 99163, United States
| | - Andrew Clark
- Physical
Sciences Division, University of Washington
Bothell, Bothell, Washington 98011, United States
| | - Kyoung-Tae Kim
- Division
of Engineering and Mathematics, University
of Washington Bothell, Bothell, Washington 98011, United States
| | - Andreea-Gabriela Nedelea
- Microbiology
& Infection Research Group, Cardiff School of Sport and Health
Sciences, Cardiff Metropolitan University, Cardiff CF5 2YB, U.K.
| | - Glen Gullickson
- Physical
Sciences Division, University of Washington
Bothell, Bothell, Washington 98011, United States
| | - Sarah E. Maddocks
- Microbiology
& Infection Research Group, Cardiff School of Sport and Health
Sciences, Cardiff Metropolitan University, Cardiff CF5 2YB, U.K.
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