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Shen Z, Zhang C, Wang T, Xu J. Advances in Functional Hydrogel Wound Dressings: A Review. Polymers (Basel) 2023; 15:polym15092000. [PMID: 37177148 PMCID: PMC10180742 DOI: 10.3390/polym15092000] [Citation(s) in RCA: 9] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Revised: 04/20/2023] [Accepted: 04/21/2023] [Indexed: 05/15/2023] Open
Abstract
One of the most advanced, promising, and commercially viable research issues in the world of hydrogel dressing is gaining functionality to achieve improved therapeutic impact or even intelligent wound repair. In addition to the merits of ordinary hydrogel dressings, functional hydrogel dressings can adjust their chemical/physical properties to satisfy different wound types, carry out the corresponding reactions to actively create a healing environment conducive to wound repair, and can also control drug release to provide a long-lasting benefit. Although a lot of in-depth research has been conducted over the last few decades, very few studies have been properly summarized. In order to give researchers a basic blueprint for designing functional hydrogel dressings and to motivate them to develop ever-more intelligent wound dressings, we summarized the development of functional hydrogel dressings in recent years, as well as the current situation and future trends, in light of their preparation mechanisms and functional effects.
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Affiliation(s)
- Zihao Shen
- Aulin College, Northeast Forestry University, Harbin 150040, China
| | - Chenrui Zhang
- Aulin College, Northeast Forestry University, Harbin 150040, China
| | - Ting Wang
- Aulin College, Northeast Forestry University, Harbin 150040, China
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, China
| | - Juan Xu
- National Research Institute for Family Planning, Haidian District, No. 12, Da Hui Si Road, Beijing 100081, China
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Wu J, Wu X, Yang F, Liu X, Meng F, Ma Q, Che Y. Multiply cross-linked poly(vinyl alcohol)/cellulose nanofiber composite ionic conductive hydrogels for strain sensors. Int J Biol Macromol 2023; 225:1119-1128. [PMID: 36414077 DOI: 10.1016/j.ijbiomac.2022.11.173] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Revised: 10/08/2022] [Accepted: 11/17/2022] [Indexed: 11/21/2022]
Abstract
Building multiple chemical crosslinks is an effective strategy to improve mechanical properties and to diversify final application of polysaccharide nanoparticles reinforced poly(vinyl alcohol) (PVA) physical hydrogels. In this work, PVA/cellulose nanofibers (CNFs) were used as composite substrate to fabricate ionic conductive hydrogels for strain sensor. Three types of characteristic crosslinks, including chemical crosslinking via boronic ester covalent bonds only, and with additional metal coordination bonding, as well as coexistence of physical crosslinks via PVA crystallites and aforementioned two kinds of chemical crosslinks, were constructed. The sample with triple crosslinks has superior mechanical strength and resistance to fatigue, and the polydopamine/Fe3+ ratio act as key to tune final performance because double-network structure prefers to form as Fe3+ is superfluous, while dual-crosslink one forms in the case of insufficient Fe3+. As-optimized ionic conductive hydrogel is suitable as strain sensor for probing human motions. This work provides an interesting insight into the network structure and property regulation for PVA/CNF composite hydrogels with multiple crosslinks.
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Affiliation(s)
- Jianzhen Wu
- Marine College, Shandong University (Weihai), Wenhua West Rd., Weihai, Shandong Province, 264209, PR China
| | - Xiuzhicheng Wu
- Marine College, Shandong University (Weihai), Wenhua West Rd., Weihai, Shandong Province, 264209, PR China
| | - Fujian Yang
- Marine College, Shandong University (Weihai), Wenhua West Rd., Weihai, Shandong Province, 264209, PR China
| | - Xiaonan Liu
- Marine College, Shandong University (Weihai), Wenhua West Rd., Weihai, Shandong Province, 264209, PR China
| | - Fanjun Meng
- Marine College, Shandong University (Weihai), Wenhua West Rd., Weihai, Shandong Province, 264209, PR China
| | - Qinglin Ma
- Marine College, Shandong University (Weihai), Wenhua West Rd., Weihai, Shandong Province, 264209, PR China
| | - Yuju Che
- Marine College, Shandong University (Weihai), Wenhua West Rd., Weihai, Shandong Province, 264209, PR China.
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Takeno H, Shikano R, Kikuchi R. Mechanical Performance of Corn Starch/Poly(Vinyl Alcohol) Composite Hydrogels Reinforced by Inorganic Nanoparticles and Cellulose Nanofibers. Gels 2022; 8:gels8080514. [PMID: 36005115 PMCID: PMC9407065 DOI: 10.3390/gels8080514] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 08/12/2022] [Accepted: 08/17/2022] [Indexed: 11/16/2022] Open
Abstract
We investigated the mechanical properties of corn starch (CS)/poly(vinyl alcohol) (PVA)/borax hydrogels reinforced by clay platelets, silica (SiO2) nanospheres, or cellulose nanofibers (CNFs). The effects of these reinforcing agents on the tensile properties of the hydrogels were quite different; the fracture stress of SiO2/CS/PVA/borax composite hydrogels increased with SiO2 concentration, whereas that of clay/CS/PVA/borax composite hydrogels was high at a low clay concentration but low at high clay concentrations; for CNF/CS/PVA/borax composite hydrogels, although the elastic modulus was highly enhanced by adding CNF, the fracture stress was very low because of the stress relaxation during the elongation. This result came from differences in the dispersibility of each filler and the reinforcing ability. These composite hydrogels were constructed by multi-crosslinking, such as hydrogen bonding between CS and PVA, CS and PVA crystals, complexation between borate and PVA (partly CS), and the crosslinking between each filler and polymer. The self-healing ability of SiO2 and clay composite hydrogels was examined. As a result, the SiO2/CS/PVA/borax composite hydrogels possessed an excellent self-healing ability, whereas the clay/CS/PVA/borax composite hydrogels had a poor self-healing ability.
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Affiliation(s)
- Hiroyuki Takeno
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Gunma, Japan
- Gunma University Center for Food Science and Wellness, 4-2 Aramaki, Maebashi 371-8510, Gunma, Japan
- Correspondence:
| | - Rina Shikano
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Gunma, Japan
| | - Rin Kikuchi
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Gunma, Japan
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Zhang W, Wang Y, Wu D. Mapping hierarchical networks of poly(vinyl alcohol)/cellulose nanofiber composite hydrogels via viscoelastic probes. Carbohydr Polym 2022; 288:119372. [PMID: 35450634 DOI: 10.1016/j.carbpol.2022.119372] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2022] [Revised: 03/03/2022] [Accepted: 03/15/2022] [Indexed: 11/02/2022]
Abstract
Discriminating the roles of different networks in the multiply cross-linked hydrogels is vital to optimize their overall performance. Poly(vinyl alcohol)/cellulose nanofiber composite hydrogels were used as template for the study. Three types of characteristic networks, including chemical network cross-linked with boronic ester bonds, physical network cross-linked with microcrystallites, and coexistence of these two networks, were constructed in the system, and the viscoelastic responses were used to detect the characteristic relaxation behavior of those networks. The physical network is more sensitive to stress-induced deformation, whereas the chemical network more sensitive to strain-induced one. The former has lower level of viscous dissipation and higher level of elastic storage as compared to the latter, and dominates linear viscoelasticity of hydrogels as the two networks coexist. Their synergistic effect can be well defined by the scaling behavior of hysteretic work. This work proposes an interesting method of probing networks in the multiply cross-linked hydrogels.
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Affiliation(s)
- Wenting Zhang
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China
| | - Yuankun Wang
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China
| | - Defeng Wu
- School of Chemistry & Chemical Engineering, Yangzhou University, Yangzhou, Jiangsu Province 225002, PR China; Provincial Key Laboratories of Environmental Materials & Engineering, Yangzhou, Jiangsu Province 225002, PR China.
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Takeno H, Suto N. Robust and Highly Stretchable Chitosan Nanofiber/Alumina-Coated Silica/Carboxylated Poly (Vinyl Alcohol)/Borax Composite Hydrogels Constructed by Multiple Crosslinking. Gels 2021; 8:6. [PMID: 35049541 PMCID: PMC8774304 DOI: 10.3390/gels8010006] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Revised: 12/19/2021] [Accepted: 12/20/2021] [Indexed: 11/22/2022] Open
Abstract
We investigated the mechanical and structural properties of composite hydrogels composed of chitosan nanofiber (ChsNF), positively charged alumina-coated silica (ac-SiO2) nanoparticles, carboxylated poly (vinyl alcohol) (cPVA), and borax. ChsNF/cPVA/borax hydrogels without ac-SiO2 exhibited high Young's modulus but poor elongation, whereas cPVA/ac-SiO2/borax hydrogels without ChsNF had moderate Young's modulus but high elongation. ChsNF/ac-SiO2/cPVA/borax hydrogels using both ChsNF and ac-SiO2 as reinforcement agents exhibited high extensibility (930%) and high Young's modulus beyond 1 MPa at a high ac-SiO2 concentration. The network was formed by multiple crosslinking such as the complexation between borate and cPVA, the ionic complexation between ac-SiO2 and cPVA, and the hydrogen bond between ChsNF and cPVA. Structural analysis by synchrotron small-angle X-ray scattering revealed that the nanostructural inhomogeneity in ChsNF/ac-SiO2/cPVA/borax hydrogel was suppressed compared to those of the ChsNF/cPVA/borax and cPVA/ac-SiO2/borax hydrogels.
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Affiliation(s)
- Hiroyuki Takeno
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Japan;
- Center for Food Science and Wellness, Gunma University, 4-2 Aramaki, Maebashi 371-8510, Japan
| | - Nagisa Suto
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, Kiryu 376-8515, Japan;
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Bujok S, Konefał M, Konefał R, Nevoralová M, Bednarz S, Mielczarek K, Beneš H. Insight into the aqueous Laponite® nanodispersions for self-assembled poly(itaconic acid) nanocomposite hydrogels: The effect of multivalent phosphate dispersants. J Colloid Interface Sci 2021; 610:1-12. [PMID: 34922067 DOI: 10.1016/j.jcis.2021.12.055] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/20/2021] [Revised: 08/31/2021] [Accepted: 12/08/2021] [Indexed: 10/19/2022]
Abstract
HYPOTHESIS We hypothesize, that physical network between Laponite® nanoparticles and high molecular weight polyelectrolyte formed by mixing of Laponite® nanodispersion (containing multivalent phosphate dispersant) and polyelectrolyte solution is strongly influenced by the type and content of dispersant, which forms electric double layer (EDL) closely to the Laponite® edges. Thus, optimum dispersant concentration is necessary to overcome clay-clay interactions (excellent clay delamination), but should not be exceeded, what would result in the EDL compression and weakening of attractions forming clay-polyelectrolyte network. Thus, deeper investigation of Laponite® nanodispersions is highly demanded since it would enable to better design the self-assembled clay-polyelectrolyte hydrogels. EXPERIMENTS To study clay interparticle interactions in the presence of various multivalent phosphates, complementary methods providing wide nanodispersion characterization have been applied: zeta potential measurement and SAXS technique (electrostatic interactions), oscillatory rheology (nanodispersion physical state) and NMR experiments (ion immobilization degree). FINDINGS It was found that multivalent phosphates induce and tune strength of clay-polyelectrolyte interactions forming hydrogel network in terms of varying EDL on the Laponite® edges. Moreover, phosphate dispersing efficiency depends on the molecular size, chemical structure, and valence of the anion; its potential as efficient dispersant for hydrogel preparation can be evaluated by estimation of anion charge density.
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Affiliation(s)
- Sonia Bujok
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic.
| | - Magdalena Konefał
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Rafał Konefał
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Martina Nevoralová
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
| | - Szczepan Bednarz
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, Cracow 31-155, Poland
| | - Kacper Mielczarek
- Faculty of Chemical Engineering and Technology, Cracow University of Technology, Warszawska 24, Cracow 31-155, Poland
| | - Hynek Beneš
- Institute of Macromolecular Chemistry, CAS, Heyrovského nám. 2, Prague 6 162 06, Czech Republic
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Takeno H, Aoki Y, Kimura K. Effects of silica and clay nanoparticles on the mechanical properties of poly(vinyl alcohol) nanocomposite hydrogels. Colloids Surf A Physicochem Eng Asp 2021. [DOI: 10.1016/j.colsurfa.2021.127592] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Tessarolli FGC, Souza STS, Gomes AS, Mansur CRE. Influence of polymer structure on the gelation kinetics and gel strength of acrylamide-based copolymers, bentonite and polyethylenimine systems for conformance control of oil reservoirs. J Appl Polym Sci 2019. [DOI: 10.1002/app.47556] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Fernanda G. C. Tessarolli
- Institute of Macromolecules (IMA); Federal University of Rio de Janeiro (UFRJ); Avenue Horácio Macedo, 2030 - Ilha do Fundão, Rio de Janeiro, CEP 21941-598 Brazil
| | - Sara T. S. Souza
- Institute of Macromolecules (IMA); Federal University of Rio de Janeiro (UFRJ); Avenue Horácio Macedo, 2030 - Ilha do Fundão, Rio de Janeiro, CEP 21941-598 Brazil
| | - Ailton S. Gomes
- Institute of Macromolecules (IMA); Federal University of Rio de Janeiro (UFRJ); Avenue Horácio Macedo, 2030 - Ilha do Fundão, Rio de Janeiro, CEP 21941-598 Brazil
| | - Claudia R. E. Mansur
- Institute of Macromolecules (IMA); Federal University of Rio de Janeiro (UFRJ); Avenue Horácio Macedo, 2030 - Ilha do Fundão, Rio de Janeiro, CEP 21941-598 Brazil
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Takeno H, Nakamura A. Effects of molecular mass of polymer on mechanical properties of clay/poly (ethylene oxide) blend hydrogels, and comparison between them and clay/sodium polyacrylate blend hydrogels. Colloid Polym Sci 2019. [DOI: 10.1007/s00396-019-04476-8] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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10
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Furuya T, Koga T. Molecular simulation of structures and mechanical properties of nanocomposite networks consisting of disk-shaped particles and polymers. SOFT MATTER 2018; 14:8293-8305. [PMID: 30272074 DOI: 10.1039/c8sm01437j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We study the structures and the mechanical properties of nanocomposite networks consisting of disk-shaped particles and polymers by a coarse-grained molecular dynamics simulation. The disk-shaped particles and the polymers form tightly cross-linked network structures by the polymer adsorption on the disk-shaped particles and show high mechanical strength. We confirm the significance of the high polymerization degree for the large fracture elongations. Under the uniaxial elongation, at low elongation ratios, the networks maintain the cross-linked structures and indicate the sharp increase of the stress with the elongation. At large elongation ratios, the number of bridge chains decreases by the peeling of the adsorbed polymers from the disk-shaped particles. The decline of the bridge chains suppresses the increment of the stress. The orientation of the disk-shaped particles saturates prior to that of the polymers because of the slow orientation of the non-bridge chains. These results are consistent with reported experimental results.
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Affiliation(s)
- Tsutomu Furuya
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto 615-8510, Japan.
| | - Tsuyoshi Koga
- Department of Polymer Chemistry, Graduate School of Engineering, Kyoto University, Katsura, Kyoto 615-8510, Japan.
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Hagita K, Shudo Y, Shibayama M. Two-dimensional scattering patterns and stress-strain relation of elongated clay nano composite gels: Molecular dynamics simulation analysis. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.08.047] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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12
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Takeno H, Nagai S. Mechanical Properties and Structures of Clay-Polyelectrolyte Blend Hydrogels. Gels 2018; 4:E71. [PMID: 30674847 PMCID: PMC6209261 DOI: 10.3390/gels4030071] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2018] [Revised: 08/24/2018] [Accepted: 08/27/2018] [Indexed: 11/17/2022] Open
Abstract
Our recent studies have shown that the hydrogels prepared by blending clay, a dispersant of clay, and a polyelectrolyte (sodium polyacrylate (PAAS)) possess excellent mechanical properties. In order to clarify the mechanism of the toughness, we have so far investigated the effects of the composition, molecular mass of the polymer, and kinds of polymers on the mechanical properties. This study has focused upon the mechanical properties and structures of the clay/PAAS gels using three kinds of smectite clay minerals such as synthetic hectorite (laponite XLG), saponite (sumecton-SA), montmorillonite (kunipia-F), whose particle size becomes larger according to the sequence. Laponite/PAAS and sumecton/PAAS gels were quite tough for high compression, whereas kunipia-F/PAAS did not gelate. In comparison between sumecton/PAAS gel and laponite/PAAS gel, the mechanical property of the former gel was poorer than that of the latter gel due to the inhomogeneous distribution of clay platelets in the gel. Synchrotron small-angle X-ray scattering experiments revealed that their clay platelets laid down in the stretching direction under elongation. Furthermore, it was found that sumecton/PAAS gel under elongation was arranged with an interparticle distance of ~6.3 nm in the direction perpendicular to the stretching. Such local ordering under elongation may originate in local aggregation of sumecton platelets in the original state without elongation.
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Affiliation(s)
- Hiroyuki Takeno
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
- Gunma University Center for Food Science and Wellness, 4-2 Aramaki, Maebashi, Gunma 371-8510, Japan.
| | - Shiori Nagai
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University, 1-5-1 Tenjin-cho, Kiryu, Gunma 376-8515, Japan.
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Mechanical, Swelling, and Structural Properties of Mechanically Tough Clay-Sodium Polyacrylate Blend Hydrogels. Gels 2017; 3:gels3010010. [PMID: 30920507 PMCID: PMC6318653 DOI: 10.3390/gels3010010] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2016] [Revised: 02/13/2017] [Accepted: 02/20/2017] [Indexed: 11/17/2022] Open
Abstract
We investigated the mechanical, swelling, and structural properties of mechanically tough clay/sodium polyacrylate (PAAS) hydrogels prepared by simple mixing. The gels had large swelling ratios, reflecting the characteristics of the constituent polymer. The swelling ratios initially increased with the increase of the swelling time, and then attained maximum values. Afterwards, they decreased with an increase of the swelling time and finally became constant. An increase in the clay concentration lead to a decrease in the swelling ratios, whereas an increase in the PAAS concentration lead to an increase in the swelling ratios. Tensile measurements indicated that the toughness for clay/PAAS (Mw = 3.50 × 106) gels was several hundred times larger than that of clay/PAAS (Mw = 5.07 × 105) gels, i.e., the use of ultra-high molecular weight PAAS is essential for fabricating mechanically tough clay/PAAS blend hydrogels. Synchrotron small-angle X-ray scattering (SAXS) results showed that the SAXS intensity measured at small scattering angles decreased with an increase in the clay concentration, indicating that the interparticle interactions were more repulsive at higher concentrations. The decrease of the scattering intensity at high clay concentrations was larger for the clay/PAAS (Mw = 5.07 × 105) gel system than for the clay/PAAS (Mw = 3.50 × 106) gel system.
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