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Muzika F, Růžička M, Schreiberová L, Schreiber I. Oscillations of pH in the urea–urease system in a membrane reactor. Phys Chem Chem Phys 2019; 21:8619-8622. [DOI: 10.1039/c9cp00630c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Urea–urease reaction in an open reservoir–membrane–reactor system displays regular spontaneous oscillations of pH.
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Affiliation(s)
- František Muzika
- Department of Chemical Engineering, University of Chemistry and Technology, Prague
- 166 28 Praha 6
- Czech Republic
| | - Matěj Růžička
- Department of Chemical Engineering, University of Chemistry and Technology, Prague
- 166 28 Praha 6
- Czech Republic
| | - Lenka Schreiberová
- Department of Chemical Engineering, University of Chemistry and Technology, Prague
- 166 28 Praha 6
- Czech Republic
| | - Igor Schreiber
- Department of Chemical Engineering, University of Chemistry and Technology, Prague
- 166 28 Praha 6
- Czech Republic
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Browe DP, Wood C, Sze MT, White KA, Scott T, Olabisi RM, Freeman JW. Characterization and optimization of actuating poly(ethylene glycol) diacrylate/acrylic acid hydrogels as artificial muscles. POLYMER 2017; 117:331-341. [PMID: 31456596 PMCID: PMC6711618 DOI: 10.1016/j.polymer.2017.04.044] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
Abstract
Large volume deficiencies in skeletal muscle tissue fail to heal with conservative treatments, and improved treatment methods are needed. Tissue engineered scaffolds for skeletal muscle need to mimic the optimal environment for muscle development by providing the proper electric, mechanical, and chemical cues. Electroactive polymers, polymers that change in size or shape in response to an electric field, may be able to provide the optimal environment for muscle growth. In this study, an electroactive polymer made from poly(ethylene glycol) diacrylate (PEGDA) and acrylic acid (AA) is characterized and optimized for movement and biocompatibility. Hydrogel sample thickness, overall polymer concentration, and the ratio of PEGDA to AA were found to significantly impact the actuation response. C2C12 mouse myoblast cells attached and proliferated on hydrogel samples with various ratios of PEGDA to AA. Future experiments will produce hydrogel samples combined with aligned guidance cues in the form of electrospun fibers to provide a favorable environment for muscle development.
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Affiliation(s)
- Daniel P. Browe
- School of Engineering, Biomedical Engineering, Rutgers University, Piscataway, NJ 08854, USA
| | - Caroline Wood
- School of Engineering, Biomedical Engineering, The College of New Jersey, Ewing Township, NJ 08168, USA
| | - Matthew T. Sze
- School of Engineering, Chemical and Biochemical Engineering, Rutgers University, Piscataway, NJ 08854, USA
| | - Kristopher A. White
- School of Engineering, Biomedical Engineering, Rutgers University, Piscataway, NJ 08854, USA
- School of Engineering, Chemical and Biochemical Engineering, Rutgers University, Piscataway, NJ 08854, USA
| | - Tracy Scott
- School of Engineering, Biomedical Engineering, Rutgers University, Piscataway, NJ 08854, USA
| | - Ronke M. Olabisi
- School of Engineering, Biomedical Engineering, Rutgers University, Piscataway, NJ 08854, USA
| | - Joseph W. Freeman
- School of Engineering, Biomedical Engineering, Rutgers University, Piscataway, NJ 08854, USA
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Highly stretchable and self-healing hydrogels based on poly(acrylic acid) and functional POSS. CHINESE JOURNAL OF POLYMER SCIENCE 2015. [DOI: 10.1007/s10118-016-1744-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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