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Niewiadomski K, Szopa D, Pstrowska K, Wróbel P, Witek-Krowiak A. Comparative Analysis of Crosslinking Methods and Their Impact on the Physicochemical Properties of SA/PVA Hydrogels. MATERIALS (BASEL, SWITZERLAND) 2024; 17:1816. [PMID: 38673173 PMCID: PMC11051402 DOI: 10.3390/ma17081816] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/03/2024] [Accepted: 04/12/2024] [Indexed: 04/28/2024]
Abstract
Hydrogels, versatile materials used in various applications such as medicine, possess properties crucial for their specific applications, significantly influenced by their preparation methods. This study synthesized 18 different types of hydrogels using sodium alginate (SA) and two molecular weights of polyvinyl alcohol (PVA). Crosslinking agents such as aqueous solutions of calcium (Ca2+) and copper (Cu2+) ions and solutions of these ions in boric acid were utilized. The hydrogels were subjected to compression strength tests and drying kinetics analysis. Additionally, six hydrogel variants containing larger PVA particles underwent Fourier-transform infrared spectroscopy (FTIR) and thermogravimetric analysis (TGA) post-drying. Some samples were lyophilized, and their surface morphology was examined using scanning electron microscopy (SEM). The results indicate that the choice of crosslinking method significantly impacts the physicochemical properties of the hydrogels. Crosslinking in solutions with higher concentrations of crosslinking ions enhanced mechanical properties and thermal stability. Conversely, using copper ions instead of calcium resulted in slower drying kinetics and reduced thermal stability. Notably, employing boric acid as a crosslinking agent for hydrogels containing heavier PVA molecules led to considerable improvements in mechanical properties and thermal stability.
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Affiliation(s)
| | | | | | | | - Anna Witek-Krowiak
- Faculty of Chemistry, Wroclaw University of Science and Technology, 27 Wybrzeze Wyspianskiego Street, 50-370 Wroclaw, Poland (D.S.); (P.W.)
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Paula CTB, Leandro A, Pereira P, Coelho JFJ, Fonseca AC, Serra AC. Fast-Gelling Polyethylene Glycol/Polyethyleneimine Hydrogels Degradable by Visible-Light. Macromol Biosci 2024; 24:e2300289. [PMID: 37717210 DOI: 10.1002/mabi.202300289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 09/12/2023] [Indexed: 09/18/2023]
Abstract
The treatment of burn wounds remains a clinical challenge due to the need for repeated dressings changes. Therefore, the development of a dressing system that can be atraumatically removed from the wound bed can be considered a breakthrough and improve treatment times. In this work, the development of an injectable, fast-gelling hydrogel is proposed that can change its mechanical properties when exposed to visible light. The hydrogels are prepared by a "click" amino-yne reaction between poly(ethylene glycol) (PEG) functionalized with propiolic acid and the amino groups of poly(ethyleneimine) (PEI). The hydrogels exhibit a fast gelation time, which can be adjusted by changing the weight percentage and molecular weight of the precursors. They also exhibit good swelling ability and adhesion to living tissues. More importantly, their mechanical properties changed upon irradiation with green light. This loss of properties is achieved by a 1 O2 -mediated mechanism, as confirmed by the degradation of the β-aminoacrylate linker. Moreover, the in vitro cell compatibility results of the hydrogels and their degradation products show good cytocompatibility. Therefore, it is believed that these hydrogels can be considered as materials with great potential for an innovative strategy for the treatment of burn wounds.
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Affiliation(s)
- Carlos T B Paula
- CEMMPRE, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima-Pólo II, Coimbra, 3030-790, Portugal
- IPN, Instituto Pedro Nunes, Associação para a Inovação e Desenvolvimento em Ciência e Tecnologia, Rua Pedro Nunes, Coimbra, 3030-199, Portugal
| | - Ana Leandro
- CEMMPRE, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima-Pólo II, Coimbra, 3030-790, Portugal
| | - Patrícia Pereira
- CEMMPRE, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima-Pólo II, Coimbra, 3030-790, Portugal
- IPN, Instituto Pedro Nunes, Associação para a Inovação e Desenvolvimento em Ciência e Tecnologia, Rua Pedro Nunes, Coimbra, 3030-199, Portugal
| | - Jorge F J Coelho
- CEMMPRE, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima-Pólo II, Coimbra, 3030-790, Portugal
- IPN, Instituto Pedro Nunes, Associação para a Inovação e Desenvolvimento em Ciência e Tecnologia, Rua Pedro Nunes, Coimbra, 3030-199, Portugal
| | - Ana C Fonseca
- CEMMPRE, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima-Pólo II, Coimbra, 3030-790, Portugal
| | - Arménio C Serra
- CEMMPRE, Department of Chemical Engineering, University of Coimbra, Rua Sílvio Lima-Pólo II, Coimbra, 3030-790, Portugal
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Otálora A, Lerma TA, Palencia M. Novel one-pot synthesis of polymeric hydrogels based on isocyanate click chemistry: Structural and functional characterization. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-03331-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Zhu J, Yuan H, Zhang S, Hao X, Lan M. Construction of antifouling and antibacterial polyhexamethylguanidine/chondroitin sulfate coating on polyurethane surface based on polydopamine rapid deposition. J Appl Polym Sci 2022. [DOI: 10.1002/app.53009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jiaqian Zhu
- School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai China
| | - Huihui Yuan
- School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai China
| | - Shunqi Zhang
- School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai China
| | - Xiang Hao
- School of Physical Science and Technology Suzhou University of Science and Technology Suzhou China
| | - Minbo Lan
- School of Chemistry & Molecular Engineering East China University of Science and Technology Shanghai China
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Paula CT, Madeira AB, Pereira P, Branco R, Morais PV, Coelho JF, Fonseca AC, Serra AC. ROS-degradable PEG-based wound dressing films with drug release and antibacterial properties. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111447] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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