1
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Meng L, Hu Y, Li W, Zhou Z, Cui S, Wang M, Chen Z, Wu Q. Molecular Chain Rearrangement-Induced In Situ Formation of Nanofibers for Improving the Strength and Toughness of Hydrogels. ACS APPLIED MATERIALS & INTERFACES 2024; 16:53007-53021. [PMID: 39303004 DOI: 10.1021/acsami.4c13362] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/22/2024]
Abstract
Although poly(vinyl alcohol) (PVA) hydrogel has high elasticity and is suitable for cartilage tissue engineering, it is difficult to have both high strength and toughness. In this study, a simple and universal strategy is proposed to prepare strong and tough PVA hydrogels by in situ forming nanofibers on the original network structure induced by a molecular chain rearrangement. Quenching-tempering alteratively in ethanol and water several times is carried out to strengthen PVA hydrogels (PVA-Etn hydrogels) due to the advantages of noncovalent bonds in adjustability and reversibility. The results show that, after three quenching-tempering cycles, PVA-Et3 hydrogel with water content up to 79 wt % shows comprehensive improved mechanical properties. The compression modulus, tensile modulus, fracture strength, tensile strain, and tear energy of the PVA-Et3 hydrogel are 270, 250, 260, 130, and 180% of the initial PVA hydrogel, respectively. The improved mechanical properties of the PVA-Et3 hydrogel are attributed to the strong cross-linked PVA chains and hydrogen bond-reinforced nanofibers. This study not only provides a simple and efficient solution for the preparation of strong and tough polymer scaffolds in tissue engineering but also provides new insights for understanding the mechanism of improving the mechanical properties of polymer hydrogels by adjusting the molecular structure.
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Affiliation(s)
- Lihui Meng
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Yanru Hu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Wenchao Li
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Zilin Zhou
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Shuojie Cui
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Meng Wang
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
| | - Zebin Chen
- Center of Hepato-Pancreato-Biliary Surgery, The First Affiliated Hospital, Sun Yat-sen University, Guangzhou 510080, P. R. China
| | - Qingzhi Wu
- State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan 430070, P. R. China
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2
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Huang L, Li H, Wen S, Xia P, Zeng F, Peng C, Yang J, Tan Y, Liu J, Jiang L, Wang J. Control nucleation for strong and tough crystalline hydrogels with high water content. Nat Commun 2024; 15:7777. [PMID: 39237555 PMCID: PMC11377714 DOI: 10.1038/s41467-024-52264-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 09/02/2024] [Indexed: 09/07/2024] Open
Abstract
Hydrogels, provided that they integrate strength and toughness at desired high content of water, promise in load-bearing tissues such as articular cartilage, ligaments, tendons. Many developed strategies impart hydrogels with some mechanical properties akin to natural tissues, but compromise water content. Herein, a strategy deprotonation-complexation-reprotonation is proposed to prepare polyvinyl alcohol hydrogels with water content as high as ~80% and favorable mechanical properties, including tensile strength of 7.4 MPa, elongation of around 1350%, and fracture toughness of 12.4 kJ m-2. The key to water holding yet improved mechanical properties lies in controllable nucleation for refinement of crystalline morphology. With nearly constant water content, mechanical properties of as-prepared hydrogels are successfully tailored by tuning crystal nuclei density via deprotonation degree and their distribution uniformity via complexation temperature. This work provides a nucleation concept to design robust hydrogels with desired water content, holding implications for practical application in tissue engineering.
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Affiliation(s)
- Limei Huang
- College of Materials Science and Engineering, Hunan University, Changsha, China
| | - Hao Li
- Institute of Laser Manufacturing, Henan Academy of Sciences, Zhengzhou, China
| | - Shunxi Wen
- College of Materials Science and Engineering, Hunan University, Changsha, China
| | - Penghui Xia
- College of Materials Science and Engineering, Hunan University, Changsha, China
| | - Fanzhan Zeng
- College of Materials Science and Engineering, Hunan University, Changsha, China
| | - Chaoyi Peng
- Zhuzhou Times New Material Technology CO., LTD., Zhuzhou, China
| | - Jun Yang
- Zhuzhou Times New Material Technology CO., LTD., Zhuzhou, China
| | - Yun Tan
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Ji Liu
- Department of Mechanical and Energy Engineering, Southern University of Science and Technology, Shenzhen, China
| | - Lei Jiang
- CAS Key Laboratory of Bio-Inspired Materials and Interface Sciences, Technical Institute of Physics and Chemistry Chinese, Academy of Sciences, Beijing, China
| | - Jianfeng Wang
- College of Materials Science and Engineering, Hunan University, Changsha, China.
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3
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Bercea M. Recent Advances in Poly(vinyl alcohol)-Based Hydrogels. Polymers (Basel) 2024; 16:2021. [PMID: 39065336 PMCID: PMC11281164 DOI: 10.3390/polym16142021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2024] [Revised: 07/11/2024] [Accepted: 07/12/2024] [Indexed: 07/28/2024] Open
Abstract
Poly(vinyl alcohol) (PVA) is a versatile synthetic polymer, used for the design of hydrogels, porous membranes and films. Its solubility in water, film- and hydrogel-forming capabilities, non-toxicity, crystallinity and excellent mechanical properties, chemical inertness and stability towards biological fluids, superior oxygen and gas barrier properties, good printability and availability (relatively low production cost) are the main aspects that make PVA suitable for a variety of applications, from biomedical and pharmaceutical uses to sensing devices, packaging materials or wastewater treatment. However, pure PVA materials present low stability in water, limited flexibility and poor biocompatibility and biodegradability, which restrict its use alone in various applications. PVA mixed with other synthetic polymers or biomolecules (polysaccharides, proteins, peptides, amino acids etc.), as well as with inorganic/organic compounds, generates a wide variety of materials in which PVA's shortcomings are considerably improved, and new functionalities are obtained. Also, PVA's chemical transformation brings new features and opens the door for new and unexpected uses. The present review is focused on recent advances in PVA-based hydrogels.
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Affiliation(s)
- Maria Bercea
- "Petru Poni" Institute of Macromolecular Chemistry, 41-A Grigore Ghica Voda Alley, 700487 Iasi, Romania
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4
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García Verdugo K, Salazar Salas BM, Chan LHC, Rodríguez Félix DE, Quiroz Castillo JM, Castillo Castro TD. Nanocomposite Hydrogels Based on Poly(vinyl alcohol) and Carbon Nanotubes for NIR-Light Triggered Drug Delivery. ACS OMEGA 2024; 9:11860-11869. [PMID: 38496922 PMCID: PMC10938584 DOI: 10.1021/acsomega.3c09609] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/01/2023] [Revised: 01/29/2024] [Accepted: 02/12/2024] [Indexed: 03/19/2024]
Abstract
Photothermal nanocomposite hydrogels are promising materials for remotely triggering drug delivery by near-infrared (NIR) radiation stimuli. In this work, a novel hydrogel based on poly(vinyl alcohol), poly(vinyl methyl ether-alt-maleic acid), poly(vinyl methyl ether), and functionalized multiwalled carbon nanotubes (MWCNT-f) was prepared by the freeze/thaw method. A comparative characterization of materials (with and without MWCNT-f) was carried out by infrared spectroscopy, differential scanning calorimetry, scanning electron microscopy, mechanical assays, swelling kinetics measurements, and photothermal analysis under NIR irradiation. Hydrophilic chemotherapeutic 5-fluorouracil (5-FU) and hydrophobic ibuprofen drugs were independently loaded into hydrogels, and the drug release profiles were obtained under passive and NIR-irradiation conditions. The concentration-dependent cytotoxicity of materials was studied in vitro using noncancerous cells and cancer cells. Notable changes in the microstructure and physicochemical properties of hydrogels were observed by adding a low content (0.2 wt %) of MWCNT-f. The cumulative release amounts of 5-FU and ibuprofen from the hydrogel containing MWCNT-f were significantly increased by 21 and 39%, respectively, through the application of short-term NIR irradiation pulses. Appropriate concentrations of the nanocomposite hydrogel loaded with 5-FU produced cytotoxicity in cancer cells without affecting noncancerous cells. The overall properties of the MWCNT-f-containing hydrogel and its photothermal behavior make it an attractive material to promote the release of hydrophilic and hydrophobic drugs, depending on the treatment requirements.
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Affiliation(s)
- Karla
F. García Verdugo
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Hermosillo CP 83000, Mexico
| | - Brianda M. Salazar Salas
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Hermosillo CP 83000, Mexico
| | | | - Dora E. Rodríguez Félix
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Hermosillo CP 83000, Mexico
| | - Jesús M. Quiroz Castillo
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Hermosillo CP 83000, Mexico
| | - Teresa del Castillo Castro
- Departamento
de Investigación en Polímeros y Materiales, Universidad de Sonora, Hermosillo CP 83000, Mexico
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5
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Kang DH, Wang S, Goh M, Park J, Na H, Lee WJ, Kim Y, Rahman MS, Tae G, Yoon MH. Synthesis of Superabsorbent Hydrogels with Predefined Geometries and Controlled Swelling Properties for Versatile 3D Cell Culture Scaffolds. ACS APPLIED MATERIALS & INTERFACES 2024; 16:3031-3041. [PMID: 38224063 DOI: 10.1021/acsami.3c11999] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/16/2024]
Abstract
This research presents a simple but general method to prepare water-soluble-polymer-based superabsorbent hydrogels with predefined microscale geometries and controlled swelling properties. Unlike conventional hydrogel preparation methods based on bulk solution-phase cross-linking, poly(vinyl alcohol) is homogeneously mixed with polymer-based cross-linkers in the solution phase and thermally cross-linked in the solid phase after drying; the degree of cross-linking is modulated by controlling the cross-linker concentration, pH, and/or thermal annealing conditions. After the shape definition process, cross-linked films or electrospun nanofibers are treated with sulfuric acid to weaken hydrogen bonds and introduce sulfate functionality in polymer crystallites. The resultant superabsorbent hydrogels exhibit an isotropic expansion of the predefined geometry and tunable swelling properties. Particularly, hydrogel microfibers exhibit excellent optical transparency, good biocompatibility, large porosity, and controlled cell adhesion, leading to versatile 3D cell culture scaffolds that not only support immortalized cell lines and primary neurons but also enable stiffness-modulated cell adhesion studies.
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Affiliation(s)
- Dong-Hee Kang
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Sungrok Wang
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - MeeiChyn Goh
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Jaeil Park
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Hyeonjun Na
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Won-June Lee
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Young Kim
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Md Saifur Rahman
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Giyoong Tae
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
| | - Myung-Han Yoon
- School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 123 Cheomdangwagi-ro, Buk-gu, Gwangju 61005, Republic of Korea
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6
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Yang X, Xu L, Wang C, Wu J, Zhu B, Meng X, Qiu D. Reinforcing Hydrogel by Nonsolvent-Quenching-Facilitated In Situ Nanofibrosis. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2303728. [PMID: 37448332 DOI: 10.1002/adma.202303728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/23/2023] [Accepted: 07/12/2023] [Indexed: 07/15/2023]
Abstract
Nanofibrous hydrogels are pervasive in load-bearing soft tissues, which are believed to be key to their extraordinary mechanical properties. Enlighted by this phenomenon, a novel reinforcing strategy for polymeric hydrogels is proposed, where polymer segments in the hydrogels are induced to form nanofibers in situ by bolstering their controllable aggregation at the nanoscale level. Poly(vinyl alcohol) hydrogels are chosen to demonstrate the virtue of this strategy. A nonsolvent-quenching step is introduced into the conventional solvent-exchange hydrogel preparation approach, which readily promotes the formation of nanofibrous hydrogels in the following solvent-tempering process. The resultant nanofibrous hydrogels demonstrate significantly improved mechanical properties and swelling resistance, compared to the conventional solvent-exchange hydrogels with identical compositions. This work validates the hypothesis that bundling polymer chains to form nanofibers can lead to nanofibrous hydrogels with remarkably enhanced mechanical performances, which may open a new horizon for single-component hydrogel reinforcement.
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Affiliation(s)
- Xule Yang
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Liju Xu
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chen Wang
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jilin Wu
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Bin Zhu
- Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - Xiaohui Meng
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Dong Qiu
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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7
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Pires T, Oliveira AS, Marques AC, Salema-Oom M, Figueiredo-Pina CG, Silva D, Serro AP. Effects of Non-Conventional Sterilisation Methods on PBO-Reinforced PVA Hydrogels for Cartilage Replacement. Gels 2022; 8:640. [PMID: 36286141 PMCID: PMC9601823 DOI: 10.3390/gels8100640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Revised: 10/01/2022] [Accepted: 10/05/2022] [Indexed: 11/04/2022] Open
Abstract
Articular cartilage (AC) degradation is a recurrent pathology that affects millions of people worldwide. Polyvinyl alcohol (PVA) hydrogels have been widely explored for AC replacement. However, their mechanical performance is generally inadequate, and these materials need to be reinforced. Moreover, to be used in a clinical setting, such materials must undergo effective sterilisation. In this work, a PVA hydrogel reinforced with poly(p-phenylene-2,6-benzobisoxazole) (PBO) nanofibres was submitted to three non-conventional sterilisation methods: microwave (MW), high hydrostatic pressure (HHP), and plasma (PM), in order to evaluate their impact on the properties of the material. Sterilisation was achieved in all cases. Properties such as water content and hydrophilicity were not affected. FTIR analysis indicated some changes in crystallinity and/or crosslinking in all cases. MW was revealed to be the most suitable method, since, unlike to PM and HHP, it led to a general improvement of the materials' properties: increasing the hardness, stiffness (both in tensile and compression), and shear modulus, and also leading to a decrease in the coefficient of friction against porcine cartilage. Furthermore, the samples remained non-irritant and non-cytotoxic. Moreover, this method allows terminal sterilisation in a short time (3 min) and using accessible equipment.
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Affiliation(s)
- Tomás Pires
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Andreia Sofia Oliveira
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
- Instituto de Engenharia Mecânica (IDMEC), Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais 1, 1049-001 Lisbon, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz, Quinta da Granja, Monte da Caparica, 2829-511 Caparica, Portugal
| | - Ana Clara Marques
- CERENA, DEQ, Instituto Superior Técnico, Universidade de Lisboa, Avenida Rovisco Pais, 1049-001 Lisboa, Portugal
| | - Madalena Salema-Oom
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz, Quinta da Granja, Monte da Caparica, 2829-511 Caparica, Portugal
| | - Célio G. Figueiredo-Pina
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz, Quinta da Granja, Monte da Caparica, 2829-511 Caparica, Portugal
- CDP2T, Escola Superior de Tecnologia de Setúbal, Instituto Politécnico de Setúbal, 2910-761 Setúbal, Portugal
- CeFEMA, Instituto Superior Técnico, Universidade de Lisboa, 1049-001 Lisbon, Portugal
| | - Diana Silva
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
| | - Ana Paula Serro
- Centro de Química Estrutural (CQE), Institute of Molecular Sciences, Departamento de Engenharia Química, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001 Lisbon, Portugal
- Centro de Investigação Interdisciplinar Egas Moniz (CiiEM), Instituto Universitário Egas Moniz, Quinta da Granja, Monte da Caparica, 2829-511 Caparica, Portugal
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8
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Kight E, Alfaro R, Gadila SKG, Chang S, Evans D, Embers M, Haselton F. Direct Capture and Early Detection of Lyme Disease Spirochete in Skin with a Microneedle Patch. BIOSENSORS 2022; 12:819. [PMID: 36290956 PMCID: PMC9599122 DOI: 10.3390/bios12100819] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Revised: 09/24/2022] [Accepted: 09/28/2022] [Indexed: 06/16/2023]
Abstract
Borrelia burgdorferi sensu lato family of spirochetes causes Lyme disease (LD) in animals and humans. As geographic territory of ticks expands across the globe, surveillance measures are needed to measure transmission rates and provide early risk testing of suspected bites. The current standard testing of LD uses an indirect two-step serological assay that detects host immune reactivity. Early detection remains a challenge because the host antibody response develops several weeks after infection. A microneedle (MN) device was developed to sample interstitial fluid (ISF) and capture spirochetes directly from skin. After sampling, the MN patch is easily dissolved in water or TE buffer, and the presence of spirochete DNA is detected by PCR. Performance was tested by spiking porcine ear skin with inactivated Borrelia burgdorferi, which had an approximate recovery of 80% of spirochetes. With further development, this simple direct PCR method could be a transformative approach for early detection of the causative agent of Lyme disease and enable rapid treatment to patients when infection is early, and numbers of systemic spirochetes are low.
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Affiliation(s)
- Emily Kight
- Biomedical Engineering, Vanderbilt University, Nashville, TN 37211, USA
| | - Rosana Alfaro
- Biomedical Engineering, Vanderbilt University, Nashville, TN 37211, USA
| | - Shiva Kumar Goud Gadila
- Division of Immunology, Tulane National Primate Research Center, Tulane University Health Sciences, Covington, LA 70433, USA
| | - Shuang Chang
- Biomedical Engineering, Vanderbilt University, Nashville, TN 37211, USA
| | - David Evans
- Biomedical Engineering, Vanderbilt University, Nashville, TN 37211, USA
| | - Monica Embers
- Division of Immunology, Tulane National Primate Research Center, Tulane University Health Sciences, Covington, LA 70433, USA
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9
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Chen WT, Zeng L, Li P, Liu Y, Huang JL, Guo H, Rao P, Li WH. Convenient hydrogel adhesion with crystalline zones. J IND ENG CHEM 2022. [DOI: 10.1016/j.jiec.2022.09.053] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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10
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Nagakawa Y, Fujita S, Yunoki S, Tsuchiya T, Suye SI, Kinoshita K, Sasaki M, Itoi T. Characterization and preliminary in vivo evaluation of a self-expandable hydrogel stent with anisotropic swelling behavior and endoscopic deliverability for use in biliary drainage. J Mater Chem B 2022; 10:4375-4385. [PMID: 35274668 DOI: 10.1039/d2tb00104g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
We demonstrate the potential of a novel self-expandable biliary stent comprised of poly(vinyl alcohol) (PVA) hydrogel with anisotropic swelling behavior and endoscopic deliverability in vivo, using a porcine stent model. The mechanism underlying the anisotropic swelling behavior and endoscopic deliverability (i.e., flexibility) was investigated by scanning electron microscopy (SEM), small-angle X-ray scattering (SAXS), evaluation of the water content and swelling ratio, and three-point bending tests. The in vivo experiment using a porcine stent model indicated that the tube-shaped PVA hydrogel could effectively expand the biliary tract, without disturbing bile flow. SEM and SAXS showed that PVA hydrogels prepared by drying under extension showed structural orientation along the extension axis, leading to anisotropic swelling. The water content of the PVA hydrogel was found to be crucial for maintaining flexibility as well as endoscopic deliverability. In conclusion, this study demonstrated the novel concept of using a hydrogel stent as a self-expandable biliary stent.
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Affiliation(s)
- Yoshiyasu Nagakawa
- Biotechnology Group, Tokyo Metropolitan Industrial Technology Research Institute, 2-4-10, Aomi, Koto-ku, Tokyo, 135-0064, Japan. .,Department of Frontier Fiber Technology and Sciences, Graduate School of Engineering University of Fukui, 3-9-1, Bunkyo, Fukui, 910-8507, Japan.
| | - Satoshi Fujita
- Department of Frontier Fiber Technology and Sciences, Graduate School of Engineering University of Fukui, 3-9-1, Bunkyo, Fukui, 910-8507, Japan. .,Life Science Innovation Center, University of Fukui, 3-9-1, Bunkyo, Fukui, 910-8507, Japan
| | - Shunji Yunoki
- Biotechnology Group, Tokyo Metropolitan Industrial Technology Research Institute, 2-4-10, Aomi, Koto-ku, Tokyo, 135-0064, Japan.
| | - Takayoshi Tsuchiya
- Department of Gastroenterology and Hepatology, Tokyo Medical University, 6-7-1, Nishishinjuku, Shinjuku-ku, Tokyo, Japan
| | - Shin-Ichiro Suye
- Department of Frontier Fiber Technology and Sciences, Graduate School of Engineering University of Fukui, 3-9-1, Bunkyo, Fukui, 910-8507, Japan. .,Life Science Innovation Center, University of Fukui, 3-9-1, Bunkyo, Fukui, 910-8507, Japan
| | - Kenji Kinoshita
- Industrial Analysis and Inspection Technology Group, Tokyo Metropolitan Industrial Technology Research Institute, 2-4-10, Aomi, Koto-ku, Tokyo, 135-0064, Japan
| | - Motoki Sasaki
- Division of Research and Development for Minimally Invasive Treatment, Cancer Center Keio University School of Medicine, 35, Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan
| | - Takao Itoi
- Department of Gastroenterology and Hepatology, Tokyo Medical University, 6-7-1, Nishishinjuku, Shinjuku-ku, Tokyo, Japan
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11
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Enhancing clinical applications of PVA hydrogel by blending with collagen hydrolysate and silk sericin. JOURNAL OF POLYMER RESEARCH 2022. [DOI: 10.1007/s10965-022-02965-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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12
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Li P, Liu Y, Wang Z, Xiao X, Meng G, Wang X, Guo HL, Guo H. Dry-regulated hydrogels with anisotropic mechanical performance and ionic conductivity. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2021.08.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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13
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Morphology and mechanical property of quenched poly(L-lactide)/N,N-dimethylacetamide gels. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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14
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Li H, Feng J, Wang Y, Liu G, Chen X, Fu L. Instant and Multiple DNA Extraction Method by Microneedle Patch for Rapid and on-Site Detection of Food Allergen-Encoding Genes. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2021; 69:6879-6887. [PMID: 34105975 DOI: 10.1021/acs.jafc.1c01077] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
DNA-based detection methods are highly promising for risk assessment in the food sector, such as tracing the existence of food allergens. However, due to the complexity of food matrices, cumbersome protocols are often needed to isolate the DNA components, which hinder the achievement of rapid and on-site detection. Herein, an instant and multiple DNA extraction method was developed based on the poly(vinyl alcohol) microneedle (MN) patch. With simple press and peel-off operations within 1 min, samples suitable for DNA-based analysis such as polymerase chain reaction (PCR) could be collected. By further combining with the recombinase polymerase amplification assay, rapid screening of the allergenic risks in complex samples such as shrimp ball and cheesecake could be achieved within 30 min. The MN-based DNA extraction method not only was a potential alternative to the traditional DNA extraction method but provided a transformative approach in realizing rapid, on-site detection of foodborne hazards in collaborating with fast DNA-based assays.
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Affiliation(s)
- Huan Li
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, P. R. China
| | - Jiesi Feng
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, P. R. China
| | - Yanbo Wang
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, P. R. China
| | - Guangming Liu
- College of Food and Biological Engineering, Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources, Jimei University, Xiamen 361021, P. R. China
| | - Xiaojing Chen
- College of Electrical and Electronic Engineering, Wenzhou University, Wenzhou 325035, P. R. China
| | - Linglin Fu
- Food Safety Key Laboratory of Zhejiang Province, School of Food Science and Biotechnology, Zhejiang Gongshang University, Hangzhou 310018, P. R. China
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15
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Liu Y, Wang W, Gu K, Yao J, Shao Z, Chen X. Poly(vinyl alcohol) Hydrogels with Integrated Toughness, Conductivity, and Freezing Tolerance Based on Ionic Liquid/Water Binary Solvent Systems. ACS APPLIED MATERIALS & INTERFACES 2021; 13:29008-29020. [PMID: 34121382 DOI: 10.1021/acsami.1c09006] [Citation(s) in RCA: 31] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In recent years, ionic conductive hydrogels have shown great potential for application in flexible sensors, energy storage devices, and actuators. However, developing facile and effective methods for fabricating such hydrogels remains a great challenge, especially for hydrogels that retain their properties in extreme environmental conditions, such as at subzero temperatures or storage in open-air conditions. Herein, a water-miscible ionic liquid (IL), such as 1-ethyl-3-methylimidazolium acetate (EMImAc), was introduced to form an IL/water binary solvent system for poly(vinyl alcohol) (PVA) to create ionic conductive PVA hydrogels. The physically crosslinked PVA/EMImAc/H2O hydrogels showed better mechanical properties and transparency than the traditional PVA hydrogel prepared by the freeze-thaw method due to the formation of homogeneous and small PVA microcrystals in the EMImAc/H2O binary solvent system. More importantly, the PVA/EMImAc/H2O hydrogel exhibited significant anti-freezing and water-retaining properties because of the presence of the IL. The hydrogels remained flexible and conductive at temperatures as low as -50 °C and retained more than 90% of their weight after storage in open-air conditions for 2 weeks. In addition, the thermal stability of the hydrogel could be increased to 95 °C through the addition of Mg(II) ions. A multimodal sensor based on the PVA/EMImAc/H2O/Mg(II) hydrogel showed high sensitivity and a quick response to changes in pressure, strain, and temperature, with both long-term stability and a wide working temperature range. This study may open a new route for the fabrication of functional PVA-based hydrogel electrolytes and provide a practical pathway for their use in multifunctional electronic and sensory device applications.
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Affiliation(s)
- Yizhuo Liu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Laboratory of Advanced Materials, Fudan University, 220 Handan Road, Shanghai 200433, People's Republic of China
| | - Wenqi Wang
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Laboratory of Advanced Materials, Fudan University, 220 Handan Road, Shanghai 200433, People's Republic of China
| | - Kai Gu
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Laboratory of Advanced Materials, Fudan University, 220 Handan Road, Shanghai 200433, People's Republic of China
| | - Jinrong Yao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Laboratory of Advanced Materials, Fudan University, 220 Handan Road, Shanghai 200433, People's Republic of China
| | - Zhengzhong Shao
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Laboratory of Advanced Materials, Fudan University, 220 Handan Road, Shanghai 200433, People's Republic of China
| | - Xin Chen
- State Key Laboratory of Molecular Engineering of Polymers, Department of Macromolecular Science, Shanghai Stomatological Hospital, Laboratory of Advanced Materials, Fudan University, 220 Handan Road, Shanghai 200433, People's Republic of China
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16
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Molyneaux K, Wnek MD, Craig SEL, Vincent J, Rucker I, Wnek GE, Brady-Kalnay SM. Physically-cross-linked poly(vinyl alcohol) cell culture plate coatings facilitate preservation of cell-cell interactions, spheroid formation, and stemness. J Biomed Mater Res B Appl Biomater 2021; 109:1744-1753. [PMID: 33847464 DOI: 10.1002/jbm.b.34832] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 02/21/2021] [Accepted: 03/14/2021] [Indexed: 12/19/2022]
Abstract
We employed aqueous solutions of highly-hydrolyzed (>99+%) poly(vinyl alcohol), PVA, to coat plastic dishes as a method to efficiently induce three-dimensional (3D) culturing of cells. The coatings were prepared by simple evaporation of 3 wt/vol% solutions of PVA in water and require no additional processing steps after air drying under sterile conditions. The coating allows spheroids to form in solution. Spheroid formation is usually preferable to two-dimensional (2D) culturing as it creates a more realistic ex vivo model of some human tissues and tumors. Using PVA-coated cell culture plates, we demonstrated that we can grow reproducibly sized spheroids using several human glioma cell lines, including LN229, U87 MG, and Gli36, and the embryonic kidney cell line, 293T. Spheroids formed on PVA-coated plates grow as well as on other commercially-available, low-attachment plates, and have excellent optical imaging properties. As spheroids, LN229 cells express markers of cancer stem cells. Finally, we confirmed that spheroids generated on PVA-coated plates are sensitive to molecular perturbations, as increased expression of the cell adhesion molecule PTPμ significantly increased the size of spheroids. The PVA hydrogel layer is an effective tool for creating a more realistic ex vivo culture system than traditional 2D culture and can be used to generate cell spheroids for potential application in drug screening and personalized medicine for diseases such as cancer.
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Affiliation(s)
- Kathleen Molyneaux
- Department of Molecular Biology & Microbiology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Maria D Wnek
- Department of Molecular Biology & Microbiology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Sonya E L Craig
- Department of Molecular Biology & Microbiology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Jason Vincent
- Department of Molecular Biology & Microbiology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Imani Rucker
- Department of Molecular Biology & Microbiology, Case Western Reserve University, Cleveland, Ohio, USA
| | - Gary E Wnek
- Department of Macromolecular Science and Engineering, Case Western Reserve University, Cleveland, Ohio, USA
| | - Susann M Brady-Kalnay
- Department of Molecular Biology & Microbiology, Case Western Reserve University, Cleveland, Ohio, USA
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17
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Xu L, Gao S, Guo Q, Wang C, Qiao Y, Qiu D. A Solvent-Exchange Strategy to Regulate Noncovalent Interactions for Strong and Antiswelling Hydrogels. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2020; 32:e2004579. [PMID: 33169449 DOI: 10.1002/adma.202004579] [Citation(s) in RCA: 104] [Impact Index Per Article: 26.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 10/10/2020] [Indexed: 06/11/2023]
Abstract
Physical hydrogels from existing polymers consisting of noncovalent interacting networks are highly desired due to their well-controlled compositions and environmental friendliness; and therefore, applied as adhesives, artificial tissues, and soft machines. Nevertheless, these gels have suffered from weak mechanical strength and low water resistance. Current methodologies used to fabricate these hydrogels mainly involve the freezing-thawing process (cryogels), which are complicated in preparation and short in adjustment of polymer conformation. Here, taking the merits of noncovalent bonds in adjustability and reversibility, a solvent-exchange strategy is developed to construct a class of exogels. Based on the exchange from a good solvent subsequently to a poor one, the intra- and interpolymer interactions are initially suppressed and then recovered, resulting in dissolving and cross-linking to polymers, respectively. Key to this approach is the good solvent, which favors of a stretched polymer conformation to homogenize the network, forming cross-linked hydrogel networks with remarkable stiffness, toughness, antiswelling properties, and thus underwater adhesive performance. The exogels highlight a facile but highly effective strategy of turning the solvent and consequently the noncovalent interactions to achieve the rational design of enhanced hydrogels and hydrogel-based soft materials.
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Affiliation(s)
- Liju Xu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Shan Gao
- Department of Orthopedics, Peking University Third Hospital, Beijing, 100191, China
| | - Qirui Guo
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Chen Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Yan Qiao
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Dong Qiu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing, 100049, China
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18
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Nagakawa Y, Kato M, Suye SI, Fujita S. Fabrication of tough, anisotropic, chemical-crosslinker-free poly(vinyl alcohol) nanofibrous cryogels via electrospinning. RSC Adv 2020; 10:38045-38054. [PMID: 35515152 PMCID: PMC9057196 DOI: 10.1039/d0ra07322a] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/26/2020] [Accepted: 10/09/2020] [Indexed: 12/18/2022] Open
Abstract
PVA hydrogels with anisotropic structures have many biomedical applications; however, the hydrophilicity of PVA nanofibers degrades their mechanical properties, and the residual unreacted chemical crosslinkers are disadvantageous for medical use. Therefore, maintaining the stability of aqueous solutions without using crosslinkers is essential while synthesizing electrospun anisotropic PVA nanofibers. Herein, we developed a novel fabrication method for synthesizing tough, anisotropic, and chemical-crosslinker-free nanofibrous cryogels composed of poly(vinyl alcohol) (PVA) and glycerol (Gly) via electrospinning in conjunction with freeze-thawing treatment. Wide-angle X-ray diffraction, attenuated total reflection Fourier-transform infrared spectroscopy, and differential scanning calorimetry analysis revealed an enhanced crystallinity of the PVA and hydrogen bonds in the PVA/Gly nanofibers after freeze-thawing, thereby leading to improved stability of the PVA/Gly nanofiber in water. The scanning electron microscopy observation and tensile tests revealed that the addition of Gly improved both the orientation and the mechanical properties. The values of the toughness parallel and vertical to the fiber axis direction were 4.20 ± 0.63 MPa and 2.17 ± 0.27 MPa, respectively, thus revealing the anisotropy of this mechanical property. The PVA/Gly nanofibrous cryogel consisted of physically crosslinked biocompatible materials featuring toughness and mechanical anisotropy, which are favorable for medical applications including tissue engineering.
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Affiliation(s)
- Yoshiyasu Nagakawa
- Biotechnology Group, Tokyo Metropolitan Industrial Technology Research Institute 2-4-10, Aomi Koto-ku Tokyo 135-0064 Japan.,Department of Frontier Fiber Technology and Sciences, Graduate School of Engineering University of Fukui 3-9-1, Bunkyo Fukui 910-8507 Japan
| | - Mikiya Kato
- Department of Frontier Fiber Technology and Sciences, Graduate School of Engineering University of Fukui 3-9-1, Bunkyo Fukui 910-8507 Japan
| | - Shin-Ichiro Suye
- Department of Frontier Fiber Technology and Sciences, Graduate School of Engineering University of Fukui 3-9-1, Bunkyo Fukui 910-8507 Japan .,Life Science Innovation Center, University of Fukui 3-9-1, Bunkyo Fukui 910-8507 Japan
| | - Satoshi Fujita
- Department of Frontier Fiber Technology and Sciences, Graduate School of Engineering University of Fukui 3-9-1, Bunkyo Fukui 910-8507 Japan .,Life Science Innovation Center, University of Fukui 3-9-1, Bunkyo Fukui 910-8507 Japan
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19
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Liao H, Liu Y, Lin S. Exploitation of acetalization process of poly(vinyl alcohol) for the formation of crosslinked poly(vinyl formal) foams. POLYM ENG SCI 2020. [DOI: 10.1002/pen.25449] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Honghui Liao
- The State Key Laboratory of Polymer Materials EngineeringPolymer Research Institute of Sichuan University Chengdu Sichuan People's Republic of China
| | - Yuan Liu
- The State Key Laboratory of Polymer Materials EngineeringPolymer Research Institute of Sichuan University Chengdu Sichuan People's Republic of China
| | - Shudong Lin
- Guangzhou Institute of ChemistryChinese Academy of Sciences Guangzhou People's Republic of China
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20
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Zhao B, Ma W, Zhang P, Zhang Q, Zhong J, Matsuyama H. Permeation and diffusion of nutrient ions in poly (vinyl alcohol) hydrogel membrane. CHEMICAL PAPERS 2020. [DOI: 10.1007/s11696-020-01210-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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21
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Mezhuev YO, Sten’kina MV, Osadchenko SV, Shtil’man MI. Production and Kinetics of Swelling in Water of Biocompatible Branched Polyvinyl Alcohol Films. RUSS J APPL CHEM+ 2020. [DOI: 10.1134/s1070427220020032] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Nagakawa Y, Fujita S, Yunoki S, Tsuchiya T, Suye S, Itoi T. Self‐expandable hydrogel biliary stent design utilizing the swelling property of poly(vinyl alcohol) hydrogel. J Appl Polym Sci 2019. [DOI: 10.1002/app.48851] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Yoshiyasu Nagakawa
- Biotechnology GroupTokyo Metropolitan Industrial Technology Research Institute 2‐4‐10, Aomi, Koto‐ku Tokyo 135‐0064 Japan
- Department of Frontier Fiber Technology and SciencesGraduate School of Engineering, University of Fukui 3‐9‐1, Bunkyo Fukui 910‐8507 Japan
| | - Satoshi Fujita
- Department of Frontier Fiber Technology and SciencesGraduate School of Engineering, University of Fukui 3‐9‐1, Bunkyo Fukui 910‐8507 Japan
- Life Science Innovation CenterUniversity of Fukui 3‐9‐1, Bunkyo Fukui 910‐8507 Japan
| | - Shunji Yunoki
- Biotechnology GroupTokyo Metropolitan Industrial Technology Research Institute 2‐4‐10, Aomi, Koto‐ku Tokyo 135‐0064 Japan
| | - Takayoshi Tsuchiya
- Department of Gastroenterology and HepatologyTokyo Medical University 6‐7‐1, Nishishinjuku, Shinjuku‐ku Tokyo 160‐0023 Japan
| | - Shin‐ichiro Suye
- Department of Frontier Fiber Technology and SciencesGraduate School of Engineering, University of Fukui 3‐9‐1, Bunkyo Fukui 910‐8507 Japan
- Life Science Innovation CenterUniversity of Fukui 3‐9‐1, Bunkyo Fukui 910‐8507 Japan
| | - Takao Itoi
- Department of Gastroenterology and HepatologyTokyo Medical University 6‐7‐1, Nishishinjuku, Shinjuku‐ku Tokyo 160‐0023 Japan
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23
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Zhou H, Xiong D, Tong W, Shi Z, Xiong X. Lubrication behaviors of PVA‐casted LSPEEK hydrogels in artificial cartilage repair. J Appl Polym Sci 2019. [DOI: 10.1002/app.47944] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Huangjie Zhou
- School of Materials Science & EngineeringNanjing University of Science and Technology Nanjing 210094 China
| | - Dangsheng Xiong
- School of Materials Science & EngineeringNanjing University of Science and Technology Nanjing 210094 China
| | - Wei Tong
- School of Materials Science & EngineeringNanjing University of Science and Technology Nanjing 210094 China
| | - Zhibing Shi
- School of Materials Science & EngineeringNanjing University of Science and Technology Nanjing 210094 China
| | - Xiaoya Xiong
- School of Materials Science & EngineeringNanjing University of Science and Technology Nanjing 210094 China
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24
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Bai R, Yang J, Morelle XP, Suo Z. Flaw‐Insensitive Hydrogels under Static and Cyclic Loads. Macromol Rapid Commun 2019; 40:e1800883. [DOI: 10.1002/marc.201800883] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2018] [Revised: 01/21/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Ruobing Bai
- John A. Paulson School of Engineering and Applied SciencesHarvard University Cambridge MA 02138 USA
- Kavli Institute for Bionano Science and TechnologyHarvard University Cambridge MA 02138 USA
| | - Jiawei Yang
- John A. Paulson School of Engineering and Applied SciencesHarvard University Cambridge MA 02138 USA
- Kavli Institute for Bionano Science and TechnologyHarvard University Cambridge MA 02138 USA
| | - Xavier P. Morelle
- John A. Paulson School of Engineering and Applied SciencesHarvard University Cambridge MA 02138 USA
- Kavli Institute for Bionano Science and TechnologyHarvard University Cambridge MA 02138 USA
| | - Zhigang Suo
- John A. Paulson School of Engineering and Applied SciencesHarvard University Cambridge MA 02138 USA
- Kavli Institute for Bionano Science and TechnologyHarvard University Cambridge MA 02138 USA
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25
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Molecular dynamics study of the influence of solvents on the structure and mechanical properties of poly(vinyl alcohol) gels. J Mol Model 2018; 24:325. [DOI: 10.1007/s00894-018-3850-1] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2018] [Accepted: 10/04/2018] [Indexed: 10/28/2022]
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26
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Cui X, Xu S, Su W, Sun Z, Yi Z, Ma X, Chen G, Chen X, Guo B, Li X. Freeze-thaw cycles for biocompatible, mechanically robust scaffolds of human hair keratins. J Biomed Mater Res B Appl Biomater 2018; 107:1452-1461. [PMID: 30339743 DOI: 10.1002/jbm.b.34237] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2018] [Revised: 08/19/2018] [Accepted: 08/23/2018] [Indexed: 02/05/2023]
Abstract
The keratin-based scaffolds are getting more and more attention in the application of tissue engineering. Though various approaches have been considered to improve the physical properties of these scaffolds, few succeeded in achieving the enhanced properties of the pure keratin scaffolds. Due to the presence of -OH, -NH2 , >CO, and -SH on the extracted human hair keratin (HHK), the formation of hydrogen bonds and disulfide bridges could be triggered under certain conditions, leading to the self-cross-linking of HHK materials. Herein, a simple and green strategy was introduced, via freeze-thaw cycles of keratin solutions without addition of extraneous reagents, to obtain the mechanically robust HHK scaffolds. The comparative quantitation of residual -SH among the samples treated with 1, 5, and 9 cycles confirmed the oxidation in the thaw process for forming disulfide bonds. So, the equivalent thaw time was applied in this study, and three groups of the treated samples after 1, 5, and 9 cycles with an appropriate extension thaw time were prepared to solely investigate the effects of physical cross-linking networks, primarily by formation of hydrogen bonds, on the properties of the obtained scaffolds. The systematic assessments including swelling behavior, porosity, thermal analysis, compressive measurement, and microstructural observation confirmed that the repetitive freeze-thaw treatment contributed to mechanically robust scaffolds with good porous interconnectivity. The cell culturing experiments further verified that these HHK scaffolds had desirable cytocompatibility, permitting the proper proliferation, attachment, and infiltration. Accordingly, this study provided a simple and efficient method to obtain biocompatible, mechanically robust keratin scaffolds. © 2018 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater 107B: 1452-1461, 2019.
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Affiliation(s)
- Xinxing Cui
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, People's Republic of China
| | - Songmei Xu
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, People's Republic of China
| | - Wen Su
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, People's Republic of China
| | - Zhe Sun
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, People's Republic of China
| | - Zeng Yi
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, People's Republic of China
| | - Xiaomin Ma
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, People's Republic of China
| | - Guangcan Chen
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, People's Republic of China
| | - Xiangyu Chen
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, People's Republic of China
| | - Bo Guo
- Department of Ophthalmology, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China
| | - Xudong Li
- National Engineering Research Center for Biomaterials, Sichuan University, Chengdu, 610064, People's Republic of China
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27
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Yu F, Han X, Zhang K, Dai B, Shen S, Gao X, Teng H, Wang X, Li L, Ju H, Wang W, Zhang J, Jiang Q. Evaluation of a polyvinyl alcohol-alginate based hydrogel for precise 3D bioprinting. J Biomed Mater Res A 2018; 106:2944-2954. [PMID: 30329209 DOI: 10.1002/jbm.a.36483] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2017] [Revised: 04/10/2018] [Accepted: 06/06/2018] [Indexed: 01/25/2023]
Affiliation(s)
- Fei Yu
- Drum Tower of Clinical Medicine, Nanjing Medical University; Nanjing China
- Department of Sports Medicine and Adult Reconstructive Surgery; Drum Tower Hospital affiliated to Medical School of Nanjing University; Nanjing China
| | - Xiao Han
- Department of Sports Medicine and Adult Reconstructive Surgery; Drum Tower Hospital affiliated to Medical School of Nanjing University; Nanjing China
| | - Kaijia Zhang
- Department of Sports Medicine and Adult Reconstructive Surgery; Drum Tower Hospital affiliated to Medical School of Nanjing University; Nanjing China
- Model Animal Research Center; Nanjing University; Nanjing China
| | - Bingyang Dai
- Department of Sports Medicine and Adult Reconstructive Surgery; Drum Tower Hospital affiliated to Medical School of Nanjing University; Nanjing China
- Model Animal Research Center; Nanjing University; Nanjing China
| | - Sheng Shen
- Department of Sports Medicine and Adult Reconstructive Surgery; Drum Tower Hospital affiliated to Medical School of Nanjing University; Nanjing China
| | - Xiang Gao
- Model Animal Research Center; Nanjing University; Nanjing China
| | - Huajian Teng
- Model Animal Research Center; Nanjing University; Nanjing China
| | - Xingsong Wang
- School of Mechanical Engineering; Southeast University; Nanjing China
- Institue of Medical 3D Printing, Nanjing University; Nanjing China
| | - Lan Li
- School of Mechanical Engineering; Southeast University; Nanjing China
- Institue of Medical 3D Printing, Nanjing University; Nanjing China
| | - Huangxian Ju
- School of Chemistry and Chemical Engineering; Nanjing University; Nanjing China
| | - Wei Wang
- Department of Physics; Nanjing University; Nanjing China
| | - Junfeng Zhang
- School of Medicine; Nanjing University; Nanjing China
| | - Qing Jiang
- Drum Tower of Clinical Medicine, Nanjing Medical University; Nanjing China
- Department of Sports Medicine and Adult Reconstructive Surgery; Drum Tower Hospital affiliated to Medical School of Nanjing University; Nanjing China
- Model Animal Research Center; Nanjing University; Nanjing China
- Institue of Medical 3D Printing, Nanjing University; Nanjing China
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28
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Poly(vinyl alcohol)/poly(vinyl pyrrolidone) hydrogels for the cleaning of art. J Colloid Interface Sci 2018; 536:339-348. [PMID: 30380433 DOI: 10.1016/j.jcis.2018.10.025] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2018] [Revised: 10/10/2018] [Accepted: 10/10/2018] [Indexed: 11/22/2022]
Abstract
The cleaning of modern and contemporary paintings is a delicate and challenging operation. Many contemporary paintings exhibit rough, clotted and pitted surfaces, where the removal of soil is difficult. Gels are among the most efficient tools to achieve controlled and efficient cleaning of works of art. However, most gels used in the conservation practice are too rigid to adapt rough surfaces, or too mechanically weak to be removed without leaving polymer residues. Several formulations of physically cross-linked poly(vinyl alcohol) (PVA)-based hydrogels, obtained by cast-drying or freeze-thawing of aqueous polymeric solutions, were formulated and characterized. The viscoelastic properties, porosity, and crystallinity of the gels were studied, along with the behavior of water inside the polymeric network. It was shown that the properties of the gels were improved through blending with poly(vinyl pyrrolidone) (PVP). The most promising gel formulation, in terms of mechanical properties and water retentiveness, was assessed for the removal of soil from an alkyd painting mock-up. A traditional gel, gellan gum, was also tested as a reference system. The effectiveness of soil removal was investigated by 2D Fourier transform infrared (FTIR) microscopy, using a Focal Plane Array (FPA) detector. In conclusion, it was shown that the newly developed formulation grants the residue-free removal of soil from rough and irregular artistic surfaces, overcoming the limits of traditional cleaning methods.
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29
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Shi L, Han Q. Molecular dynamics study of deformation mechanisms of poly(vinyl alcohol) hydrogel. MOLECULAR SIMULATION 2018. [DOI: 10.1080/08927022.2018.1506120] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- Lixin Shi
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, People’s Republic of China
| | - Qiang Han
- School of Civil Engineering and Transportation, South China University of Technology, Guangzhou, People’s Republic of China
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Irreversible Swelling Behavior and Reversible Hysteresis in Chemically Crosslinked Poly(vinyl alcohol) Gels. Gels 2018; 4:gels4020045. [PMID: 30674821 PMCID: PMC6209262 DOI: 10.3390/gels4020045] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Revised: 05/06/2018] [Accepted: 05/14/2018] [Indexed: 11/17/2022] Open
Abstract
We report the swelling properties of chemically crosslinked poly(vinyl alcohol) (PVA) gels with high degrees of polymerization and hydrolysis. Physical crosslinking by microcrystallites was introduced in this chemical PVA gel by a simple dehydration process. The equilibrium swelling ratio was measured in several mixed solvents, which comprised two-components: a good solvent (water or dimethyl sulfoxide (DMSO)), and a poor organic solvent for PVA. In the case of aqueous/organic solvent mixtures subjected to a multiple-sample test, the swelling ratio decreased continuously when the concentration of the organic solvent increased, reaching a collapsed state in the respective pure organic solvents. In the case of DMSO, starting from a swollen state, the swelling ratio rapidly decreased by between 15 and 50 mol % when the concentration of the organic compound increased in a single-sample test. To understand the hysteresis phenomenon, the swelling ratio was measured in a DMSO/acetone mixed solvent, starting from a collapsed state in acetone. The reversibility of swelling in response to successive concentration cycles between DMSO and acetone was examined. As a result, an irreversible swelling behavior was observed in the first cycle, and the swelling ratio in acetone after the first cycle became larger than the initial ratio. Subsequently, the swelling ratio changed reversibly, with a large hysteresis near a specific molar ratio of DMSO/acetone of 60/40. The microstructures were confirmed by Fourier transform infrared spectroscopy during the cycles. The irreversible swelling behavior and hysteresis are discussed in terms of the destruction and re-formation of additional physical crosslinking in the chemical PVA gels.
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31
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Reproduction method for dried biomodels composed of poly (vinyl alcohol) hydrogels. Sci Rep 2018; 8:5754. [PMID: 29636533 PMCID: PMC5893614 DOI: 10.1038/s41598-018-24235-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2017] [Accepted: 03/29/2018] [Indexed: 12/02/2022] Open
Abstract
Models mimicking the realistic geometries and mechanical properties of human tissue are requiring ever-better materials. Biomodels made of poly (vinyl alcohol) are particularly in demand, as they can be used to realistically reproduce the characteristics of blood vessels. The reproducibility of biomodels can be altered due to dehydration that is observed after long periods of usage. In order to improve their usability, one should consider the method used to reproduce them; however, few studies have reported a method reproduce biomodels. This study proposes a novel reproduction method for biomodels that allows them to quickly and easily reproduce their geometric and mechanical properties. Specimens of the dried biomodels were reformed through immersion in temperature-controlled water. Our results show that water at 35 °C can be effective to reproduce both the geometric and mechanical properties of the specimens. X-ray diffraction (XRD) measurements revealed that water immersion can reform the crystal structure of the pre-dried specimens, and images obtained using micro-computed tomography acquisition show that the geometry of the specimens can be reformed by water immersion without introducing any defects. These results indicate that the proposed method can lead to high reproducibility of both the original geometric and mechanical properties of the dried biomodels.
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32
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Sasaki S, Omata S, Murakami T, Nagasawa N, Taguchi M, Suzuki A. Effect of Gamma Ray Irradiation on Friction Property of Poly(vinyl alcohol) Cast-Drying on Freeze-Thawed Hybrid Gel. Gels 2018; 4:E30. [PMID: 30674806 PMCID: PMC6209256 DOI: 10.3390/gels4020030] [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: 02/27/2018] [Revised: 03/26/2018] [Accepted: 03/27/2018] [Indexed: 11/16/2022] Open
Abstract
Poly(vinyl alcohol) (PVA) is a biocompatible polymer with low toxicity. It is possible to prepare physically cross-linked PVA gels having hydrogen bonds without using a cross-linking agent. The newly reported physically cross-linked PVA cast-drying (CD) on freeze-thawed (FT) hybrid gel has an excellent friction property, which is expected to be applied as a candidate material for artificial cartilage. Gamma ray sterilization for clinical applications usually causes additional chemical cross-linking and changes physical properties of gels. In this study, CD on FT hybrid gels were irradiated using gamma rays at a different dose rate and irradiance. The results showed the optimized irradiation conditions for gamma irradiated gels to retain excellent friction characteristics.
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Affiliation(s)
- Saori Sasaki
- Research Center for Advanced Biomechanics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
- Institute for Material Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
| | - Seiji Omata
- Research Center for Advanced Biomechanics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
- Department of Micro-Nano Mechanical Science and Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, Japan.
| | - Teruo Murakami
- Research Center for Advanced Biomechanics, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka 819-0395, Japan.
- Faculty of Fukuoka Medical Technology, Teikyo University, 6-22 Misaki-machi, Omuta 836-8505, Japan.
| | - Naotsugu Nagasawa
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Watanuki 1233, Takasaki, Gunma 370-1292, Japan.
| | - Mitsumasa Taguchi
- Takasaki Advanced Radiation Research Institute, National Institutes for Quantum and Radiological Science and Technology, Watanuki 1233, Takasaki, Gunma 370-1292, Japan.
| | - Atsushi Suzuki
- Research Institute of Environment and Information Sciences, Yokohama National University, 79-7 Tokiwadai, Hodogaya-ku, Yokohama 240-8501, Japan.
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33
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Liao H, Liu Y, Wang Q, Duan W. Structure and properties of porous poly(vinyl alcohol) hydrogel beads prepared through a physical-chemical crosslinking method. J Appl Polym Sci 2018. [DOI: 10.1002/app.46402] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Honghui Liao
- Polymer Research Institute of Sichuan University; State Key Laboratory of Polymer Materials Engineering; Chengdu 610065 China
| | - Yuan Liu
- Polymer Research Institute of Sichuan University; State Key Laboratory of Polymer Materials Engineering; Chengdu 610065 China
| | - Qi Wang
- Polymer Research Institute of Sichuan University; State Key Laboratory of Polymer Materials Engineering; Chengdu 610065 China
| | - Wenfeng Duan
- State Key Laboratory of Special Functional Waterproof Materials; Beijing 101300 China
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34
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Zhang Z, Wu Y, Wang Z, Zhang X, Zhao Y, Sun L. Electrospinning of Ag Nanowires/polyvinyl alcohol hybrid nanofibers for their antibacterial properties. MATERIALS SCIENCE & ENGINEERING. C, MATERIALS FOR BIOLOGICAL APPLICATIONS 2017; 78:706-714. [DOI: 10.1016/j.msec.2017.04.138] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/28/2016] [Revised: 04/07/2017] [Indexed: 10/19/2022]
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35
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Development of PVA Hydrogels with Superior Lubricity for Artificial Cartilage. RHEOLOGY OF BIOLOGICAL SOFT MATTER 2017. [DOI: 10.1007/978-4-431-56080-7_13] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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36
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Abstract
Hydrogel films used as membranes or coatings are essential components of devices interfaced with biological systems. Their design is greatly challenged by the need to find mild synthesis and processing conditions that preserve their biocompatibility and the integrity of encapsulated compounds. Here, we report an approach to produce hydrogel films spontaneously in aqueous polymer solutions. This method uses the solvent depletion created at the surface of swelling polymer substrates to induce the gelation of a thin layer of polymer solution. Using a biocompatible polymer that self-assembles at high concentration [poly(vinyl alcohol)], hydrogel films were produced within minutes to hours with thicknesses ranging from tens to hundreds of micrometers. A simple model and numerical simulations of mass transport during swelling capture the experiments and predict how film growth depends on the solution composition, substrate geometry, and swelling properties. The versatility of the approach was verified with a variety of swelling substrates and hydrogel-forming solutions. We also demonstrate the potential of this technique by incorporating other solutes such as inorganic particles to fabricate ceramic-hydrogel coatings for bone anchoring and cells to fabricate cell-laden membranes for cell culture or tissue engineering.
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37
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Zhang Y, Zhang J, Chen M, Gong H, Thamphiwatana S, Eckmann L, Gao W, Zhang L. A Bioadhesive Nanoparticle-Hydrogel Hybrid System for Localized Antimicrobial Drug Delivery. ACS APPLIED MATERIALS & INTERFACES 2016; 8:18367-74. [PMID: 27352845 PMCID: PMC4983189 DOI: 10.1021/acsami.6b04858] [Citation(s) in RCA: 70] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
Effective antibacterial treatment at the infection site associated with high shear forces remains challenging, owing largely to the lack of durably adhesive and safe delivery platforms that can enable localized antibiotic accumulation against bacterial colonization. Inspired by delivery systems mimicking marine mussels for adhesion, herein, we developed a bioadhesive nanoparticle-hydrogel hybrid (NP-gel) to enhance localized antimicrobial drug delivery. Antibiotics were loaded into polymeric nanoparticles and then embedded into a 3D hydrogel network that confers adhesion to biological surfaces. The combination of two distinct delivery platforms, namely, nanoparticles and hydrogel, allows the hydrogel network properties to be independently tailored for adhesion while maintaining controlled and prolonged antibiotic release profile from the nanoparticles. The bioadhesive NP-gel developed here showed superior adhesion and antibiotic retention under high shear stress on a bacterial film, a mammalian cell monolayer, and mouse skin tissue. Under a flow environment, the NP-gel inhibited the formation of an Escherichia coli bacterial film. When applied on mouse skin tissue for 7 consecutive days, the NP-gel did not generate any observable skin reaction or toxicity, implying its potential as a safe and effective local delivery platform against microbial infections.
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Affiliation(s)
- Yue Zhang
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
- Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Jianhua Zhang
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
- Department of Polymer Science and Engineering, School of Chemical Engineering and Technology, Tianjin University, Tianjin, 300072, China
| | - Maggie Chen
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
| | - Hua Gong
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
- Institute of Functional Nano & Soft Materials (FUNSOM), Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou, Jiangsu, 215123, China
| | - Soracha Thamphiwatana
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
- Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Lars Eckmann
- Department of Medicine, University of California, San Diego, La Jolla, CA 92093, USA
| | - Weiwei Gao
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
- Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
| | - Liangfang Zhang
- Department of NanoEngineering, University of California, San Diego, La Jolla, CA 92093, USA
- Moores Cancer Center, University of California, San Diego, La Jolla, CA 92093, USA
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38
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Duncan TT, Berrie BH, Weiss RG. Colloidal Properties of Aqueous Poly(vinyl acetate)–Borate Dispersions with Short‐Chain Glycol Ethers. Chemphyschem 2016; 17:2535-44. [DOI: 10.1002/cphc.201600266] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Revised: 05/03/2016] [Indexed: 11/09/2022]
Affiliation(s)
- Teresa T. Duncan
- Department of Chemistry Georgetown University Washington DC 20057-1227 USA
| | - Barbara H. Berrie
- Conservation Division National Gallery of Art Washington DC 20565 USA
| | - Richard G. Weiss
- Department of Chemistry Georgetown University Washington DC 20057-1227 USA
- Institute for Soft Matter Synthesis and Metrology Georgetown University Washington DC 20057-1227 USA
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39
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Clusters of neural stem/progenitor cells cultured on a soft poly(vinyl alcohol) hydrogel crosslinked by gamma irradiation. J Biosci Bioeng 2016; 121:584-90. [DOI: 10.1016/j.jbiosc.2015.09.010] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 09/01/2015] [Accepted: 09/16/2015] [Indexed: 12/15/2022]
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40
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Ito W, Yamaki M, Kawai M, Mitsumata T, Okajima MK, Kaneko T. Extraordinary Swelling of Hydrogels Physically Crosslinked by Megamolecular Chain Sacran. CHEM LETT 2016. [DOI: 10.1246/cl.151125] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Wataru Ito
- Department of Polymer Science and Engineering, Graduate School of Engineering and Science, Yamagata University
| | - Miho Yamaki
- Department of Materials Science and Engineering, Faculty of Engineering, Niigata University
| | - Mika Kawai
- Department of Materials Science and Engineering, Faculty of Engineering, Niigata University
| | - Tetsu Mitsumata
- Department of Materials Science and Engineering, Faculty of Engineering, Niigata University
| | - Maiko K. Okajima
- School of Materials Science, Japan Advanced Institute of Science and Technology
| | - Tatsuo Kaneko
- School of Materials Science, Japan Advanced Institute of Science and Technology
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41
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Evaluation of lubrication properties of hydrogel artificial cartilage materials for joint prosthesis. BIOSURFACE AND BIOTRIBOLOGY 2016. [DOI: 10.1016/j.bsbt.2016.02.005] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
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42
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Frictional properties of physically cross-linked PVA hydrogels as artificial cartilage. BIOSURFACE AND BIOTRIBOLOGY 2016. [DOI: 10.1016/j.bsbt.2016.02.002] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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43
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Sasaki S, Suzuki A. A Novel Method to Control the Elution Behavior of PVA Cast Gels. ACTA ACUST UNITED AC 2015. [DOI: 10.1002/masy.201500058] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Saori Sasaki
- Graduate School of Environment and Information Sciences; Yokohama National University; 79-7 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
| | - Atsushi Suzuki
- Graduate School of Environment and Information Sciences; Yokohama National University; 79-7 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
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44
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Murakami T, Yarimitsu S, Nakashima K, Sakai N, Yamaguchi T, Sawae Y, Suzuki A. Biphasic and boundary lubrication mechanisms in artificial hydrogel cartilage: A review. Proc Inst Mech Eng H 2015; 229:864-78. [DOI: 10.1177/0954411915611160] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Various studies on the application of artificial hydrogel cartilage to cartilage substitutes and artificial joints have been conducted. It is expected in clinical application of artificial hydrogel cartilage that not only soft-elastohydrodynamic lubrication but biphasic, hydration, gel-film and boundary lubrication mechanisms will be effective to sustain extremely low friction and minimal wear in daily activities similar to healthy natural synovial joints with adaptive multimode lubrication. In this review article, the effectiveness of biphasic lubrication and boundary lubrication in hydrogels in thin film condition is focused in relation to the structures and properties of hydrogels. As examples, the tribological behaviors in three kinds of poly(vinyl alcohol) hydrogels with high water content are compared, and the importance of lubrication mechanism in biomimetic artificial hydrogel cartilage is discussed to extend the durability of cartilage substitute.
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Affiliation(s)
- Teruo Murakami
- Research Center for Advanced Biomechanics, Kyushu University, Fukuoka, Japan
| | - Seido Yarimitsu
- Research Center for Advanced Biomechanics, Kyushu University, Fukuoka, Japan
- Faculty of System Design, Tokyo Metropolitan University, Tokyo, Japan
| | - Kazuhiro Nakashima
- Department of Mechanical Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan
| | - Nobuo Sakai
- Department of Applied Science for Integrated System Engineering, Graduate School of Engineering, Kyushu Institute of Technology, Kitakyushu, Japan
| | - Tetsuo Yamaguchi
- Department of Mechanical Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan
| | - Yoshinori Sawae
- Department of Mechanical Engineering, Faculty of Engineering, Kyushu University, Fukuoka, Japan
| | - Atsushi Suzuki
- Department of Materials Science and Research Institute of Environment and Information Sciences, Yokohama National University, Yokohama, Japan
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45
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Suzuki A, Sasaki S. Swelling and mechanical properties of physically crosslinked poly(vinyl alcohol) hydrogels. Proc Inst Mech Eng H 2015; 229:828-44. [DOI: 10.1177/0954411915615469] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Physically crosslinked poly(vinyl alcohol) gels are versatile biomaterials due to their excellent biocompatibility. In the past decades, physically crosslinked poly(vinyl alcohol) and poly(vinyl alcohol)-based hydrogels have been extensively studied for biomedical applications. However, these materials have not yet been implemented due to their mechanical strength. Physically crosslinked poly(vinyl alcohol) gels consist of a swollen amorphous network of poly(vinyl alcohol) physically crosslinked by microcrystallites. Although the mechanical properties can be improved to some extent by controlling the distribution of microcrystallites on the nano- and micro-scales, enhancing the mechanical properties while maintaining high water content remains very difficult. It may be technologically impossible to significantly improve the mechanical properties while keeping the gel’s high water absorbance ability using conventional fabrication methods. Physical and chemical understandings of the swelling and mechanical properties of physically crosslinked poly(vinyl alcohol) gels are considered here; some promising strategies for their practical applications are presented. This review focuses more on the recent studies on swelling and mechanical properties of poly(vinyl alcohol) hydrogels, prepared using only poly(vinyl alcohol) and pure water with no other chemicals, as potential biomedical materials.
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Affiliation(s)
- Atsushi Suzuki
- Department of Materials Science, Research Institute of Environment and Information Sciences, Yokohama National University, Yokohama, Japan
| | - Saori Sasaki
- Department of Materials Science, Research Institute of Environment and Information Sciences, Yokohama National University, Yokohama, Japan
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46
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Sasaki S, Suzuki A. Factors influencing the swelling and elution properties of poly(vinyl alcohol) cast gels. POLYM ADVAN TECHNOL 2015. [DOI: 10.1002/pat.3643] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Saori Sasaki
- Graduate School of Environment and Information Sciences; Yokohama National University; 79-1 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
| | - Atsushi Suzuki
- Graduate School of Environment and Information Sciences; Yokohama National University; 79-1 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
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47
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Effect of poly(vinyl alcohol) (PVA) wear particles generated in water lubricant on immune response of macrophage. BIOSURFACE AND BIOTRIBOLOGY 2015. [DOI: 10.1016/j.bsbt.2015.02.003] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022] Open
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48
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SASAKI S, YARIMITSU S, MURAKAMI T, SUZUKI A. Effect of Drying on the Frictional Properties of PVA Cast Gel. KOBUNSHI RONBUNSHU 2015. [DOI: 10.1295/koron.2015-0036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Saori SASAKI
- Graduate School of Environment and Information Sciences, Yokohama National University
| | - Seido YARIMITSU
- Research Center for Advanced Biomechanics, Kyushu University
| | - Teruo MURAKAMI
- Research Center for Advanced Biomechanics, Kyushu University
| | - Atsushi SUZUKI
- Graduate School of Environment and Information Sciences, Yokohama National University
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49
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Li C, Vongsvivut J, She X, Li Y, She F, Kong L. New insight into non-isothermal crystallization of PVA-graphene composites. Phys Chem Chem Phys 2014; 16:22145-58. [PMID: 25213676 DOI: 10.1039/c4cp03613a] [Citation(s) in RCA: 44] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The melt crystallization of poly(vinyl alcohol) (PVA) and PVA composites has been a controversial subject due to inconclusive evidence and different opinions for its decomposition during crystallization. Using graphene as a model, the melt crystallization of PVA and PVA-graphene composites occurring during single-cycle and multiple-cycle non-isothermal annealing processes was systematically analyzed using different characterization techniques. The results obtained using single-cycle non-isothermal annealing indicated that the entire crystallization process took place through two main stages. The graphene in the PVA matrix regulates the nucleation and crystal growth manner of the PVA, yet resulting in retardation of the entire crystallization. The FTIR and Raman spectroscopic results particularly demonstrated that the annealing process not only improved the crystallinity but also led to clear decomposition in PVA and PVA-graphene composites, such as the elimination of hydroxyl groups and the production of C=C double bonds. The newly produced C=C double bonds were found to be responsible for the retardation of PVA macromolecule crystallization and the breaking of hydrogen bonds among the hydroxyl groups in the PVA chains. In addition, the morphological observation and multi-cycle non-isothermal crystallization further confirmed the existence of decomposition based on the surface damage as well as decreased crystallization enthalpy and crystallization peak temperature. Therefore, the non-isothermal crystallizations of the pure PVA and the PVA-graphene composites were in fact the combination of non-isothermal crystallization and non-isothermal degradation processes.
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Affiliation(s)
- Chengpeng Li
- Institute for Frontier Materials, Deakin University, Waurn Ponds, Victoria 3216, Australia.
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50
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Noh T, Bando Y, Ota K, Sasaki S, Suzuki A. Tear force of physically crosslinked poly(vinyl alcohol) gels with different submicrometer-scale network structures. J Appl Polym Sci 2014. [DOI: 10.1002/app.41356] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Taegu Noh
- Department of Materials Science and Research Institute of Environment and Information Sciences; Yokohama National University; 79-7 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
| | - Yujiro Bando
- Department of Materials Science and Research Institute of Environment and Information Sciences; Yokohama National University; 79-7 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
| | - Kensuke Ota
- Department of Materials Science and Research Institute of Environment and Information Sciences; Yokohama National University; 79-7 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
| | - Saori Sasaki
- Department of Materials Science and Research Institute of Environment and Information Sciences; Yokohama National University; 79-7 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
| | - Atsushi Suzuki
- Department of Materials Science and Research Institute of Environment and Information Sciences; Yokohama National University; 79-7 Tokiwadai, Hodogaya-ku Yokohama 240-8501 Japan
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