1
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Zhai N, Wang B. Preparation of fast-swelling porous superabsorbent hydrogels with high saline water absorbency under pressure by foaming and post surface crosslinking. Sci Rep 2023; 13:13815. [PMID: 37620516 PMCID: PMC10449836 DOI: 10.1038/s41598-023-40563-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2023] [Accepted: 08/13/2023] [Indexed: 08/26/2023] Open
Abstract
Superabsorbent hydrogels have wide applications in many fields because of their unique water absorbing performance. In spite of decades of research about superabsorbent hydrogels, high water absorbency under pressure and fast-swelling are still challenging and highly desired for their applications in hygienic products and others. Here, we report preparation of fast-swelling porous starch-g-poly(acrylic acid)/poly(vinyl alcohol) superabsorbent hydrogels with high saline water absorbency under pressure by foaming and post surface crosslinking. 2,2'-Azobis(2-amidinopropane) dihydrochloride (AIBA) was used as a new porogen instead of conventional porogens like NaHCO3. Post surface crosslinking of the hydrogel was achieved using glycerol via the esterification reaction. AIBA is a better porogen than NaHCO3 regarding porosity and swelling performance of the hydrogels, and its content has great influences on structure and swelling performance of the hydrogels including water absorbency and swelling rate. Also, the surface crosslinking using glycerol can significantly enhance the saline water absorbency under pressure (2 kPa) but at the sacrifice of the swelling rate. Consequently, the hydrogels show high water absorbencies for deionized water (560 g/g), 0.9 wt% NaCl solution (58 g/g), 0.9 wt% NaCl solution under 2 kPa pressure (28 g/g) and fast-swelling (31 s to achieve a highly swelling state).
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Affiliation(s)
- Naihua Zhai
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China.
| | - Baogui Wang
- College of Chemistry and Pharmaceutical Sciences, Qingdao Agricultural University, Qingdao, 266109, People's Republic of China
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2
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Prouvé E, Rémy M, Feuillie C, Molinari M, Chevallier P, Drouin B, Laroche G, Durrieu MC. Interplay of matrix stiffness and stress relaxation in directing osteogenic differentiation of mesenchymal stem cells. Biomater Sci 2022; 10:4978-4996. [PMID: 35801706 DOI: 10.1039/d2bm00485b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The aim of this study is to investigate the impact of the stiffness and stress relaxation of poly(acrylamide-co-acrylic acid) hydrogels on the osteogenic differentiation of human mesenchymal stem cells (hMSCs). Varying the amount of the crosslinker and the ratio between the monomers enabled the obtainment of hydrogels with controlled mechanical properties, as characterized using unconfined compression and atomic force microscopy (AFM). Subsequently, the surface of the hydrogels was functionalized with a mimetic peptide of the BMP-2 protein, in order to favor the osteogenic differentiation of hMSCs. Finally, hMSCs were cultured on the hydrogels with different stiffness and stress relaxation: 15 kPa - 15%, 60 kPa - 15%, 140 kPa - 15%, 100 kPa - 30%, and 140 kPa - 70%. The cells on hydrogels with stiffnesses from 60 kPa to 140 kPa presented a star-like shape, typical of osteocytes, which has only been reported by our group for two-dimensional substrates. Then, the extent of hMSC differentiation was evaluated by using immunofluorescence and by quantifying the expression of both osteoblast markers (Runx-2 and osteopontin) and osteocyte markers (E11, DMP1, and sclerostin). It was found that a stiffness of 60 kPa led to a higher expression of osteocyte markers as compared to stiffnesses of 15 and 140 kPa. Finally, the strongest expression of osteoblast and osteocyte differentiation markers was observed for the hydrogel with a high relaxation of 70% and a stiffness of 140 kPa.
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Affiliation(s)
- Emilie Prouvé
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, 1065 Avenue de la médecine, Québec G1V 0A6, Canada. .,Axe médecine régénératrice, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Hôpital St-François d'Assise, 10 rue de l'Espinay, Québec G1L 3L5, Canada.,Université de Bordeaux, Chimie et Biologie des Membranes et Nano-Objets (UMR5248 CBMN), Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.,CNRS, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.,Bordeaux INP, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.
| | - Murielle Rémy
- Université de Bordeaux, Chimie et Biologie des Membranes et Nano-Objets (UMR5248 CBMN), Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.,CNRS, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.,Bordeaux INP, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.
| | - Cécile Feuillie
- Université de Bordeaux, Chimie et Biologie des Membranes et Nano-Objets (UMR5248 CBMN), Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.,CNRS, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.,Bordeaux INP, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.
| | - Michael Molinari
- Université de Bordeaux, Chimie et Biologie des Membranes et Nano-Objets (UMR5248 CBMN), Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.,CNRS, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.,Bordeaux INP, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.
| | - Pascale Chevallier
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, 1065 Avenue de la médecine, Québec G1V 0A6, Canada. .,Axe médecine régénératrice, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Hôpital St-François d'Assise, 10 rue de l'Espinay, Québec G1L 3L5, Canada
| | - Bernard Drouin
- Axe médecine régénératrice, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Hôpital St-François d'Assise, 10 rue de l'Espinay, Québec G1L 3L5, Canada
| | - Gaétan Laroche
- Laboratoire d'Ingénierie de Surface, Centre de Recherche sur les Matériaux Avancés, Département de Génie des Mines, de la Métallurgie et des Matériaux, Université Laval, 1065 Avenue de la médecine, Québec G1V 0A6, Canada. .,Axe médecine régénératrice, Centre de Recherche du Centre Hospitalier Universitaire de Québec, Hôpital St-François d'Assise, 10 rue de l'Espinay, Québec G1L 3L5, Canada
| | - Marie-Christine Durrieu
- Université de Bordeaux, Chimie et Biologie des Membranes et Nano-Objets (UMR5248 CBMN), Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.,CNRS, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.,Bordeaux INP, CBMN UMR5248, Allée Geoffroy Saint Hilaire - Bât B14, 33600 Pessac, France.
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3
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Kwon YR, Kim HC, Kim JS, Chang Y, Park H, Kim DH. Itaconic acid‐based superabsorbent polymer with high gel strength and biocompatibility. POLYM INT 2022. [DOI: 10.1002/pi.6367] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Yong Rok Kwon
- Materials & Component Convergence R&D Department Korea Institute of Industrial Technology (KITECH), 143, Hanggaul‐ro, Sangnok‐gu, Ansansi Gyeonggi‐do 15588 Republic of Korea
- Department of Material Chemical Engineering Hanyang University, 55, Hanggaul‐ro, Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
| | - Hae Chan Kim
- Materials & Component Convergence R&D Department Korea Institute of Industrial Technology (KITECH), 143, Hanggaul‐ro, Sangnok‐gu, Ansansi Gyeonggi‐do 15588 Republic of Korea
- Department of Material Chemical Engineering Hanyang University, 55, Hanggaul‐ro, Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
| | - Jung Soo Kim
- Materials & Component Convergence R&D Department Korea Institute of Industrial Technology (KITECH), 143, Hanggaul‐ro, Sangnok‐gu, Ansansi Gyeonggi‐do 15588 Republic of Korea
| | - Young‐Wook Chang
- Department of Material Chemical Engineering Hanyang University, 55, Hanggaul‐ro, Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
| | - Hansoo Park
- School of Integrative Engineering, College of Engineering, Chung‐Ang University, 84, Heukseok‐ro, Dongjak‐gu Seoul 06974 Republic of Korea
| | - Dong Hyun Kim
- Materials & Component Convergence R&D Department Korea Institute of Industrial Technology (KITECH), 143, Hanggaul‐ro, Sangnok‐gu, Ansansi Gyeonggi‐do 15588 Republic of Korea
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4
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Fengler C, Spange S, Sommer M, Wilhelm M. Synthesis of Superabsorbent Poly(vinylamine) Core–Shell Particles Monitored by Time-Domain NMR. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c02008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christian Fengler
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstr. 18, 76131 Karlsruhe, Germany
| | - Stefan Spange
- Institute for Chemistry, Polymer Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Michael Sommer
- Institute for Chemistry, Polymer Chemistry, Chemnitz University of Technology, Straße der Nationen 62, 09111 Chemnitz, Germany
| | - Manfred Wilhelm
- Institute for Chemical Technology and Polymer Chemistry, Karlsruhe Institute of Technology, Engesserstr. 18, 76131 Karlsruhe, Germany
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5
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Chung H, Oh S, Shin HW, Lee Y, Lee H, Seok SH. Matrix Stiffening Enhances DNCB-Induced IL-6 Secretion in Keratinocytes Through Activation of ERK and PI3K/Akt Pathway. Front Immunol 2021; 12:759992. [PMID: 34858412 PMCID: PMC8631934 DOI: 10.3389/fimmu.2021.759992] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/17/2021] [Accepted: 10/28/2021] [Indexed: 12/04/2022] Open
Abstract
Matrix stiffness, a critical physical property of the cellular environment, is implicated in epidermal homeostasis. In particular, matrix stiffening during the pathological progression of skin diseases appears to contribute to cellular responses of keratinocytes. However, it has not yet elucidated the molecular mechanism underlying matrix-stiffness-mediated signaling in coordination with chemical stimuli during inflammation and its effect on proinflammatory cytokine production. In this study, we demonstrated that keratinocytes adapt to matrix stiffening by increasing cell–matrix adhesion via actin cytoskeleton remodeling. Specifically, mechanosensing and signal transduction are coupled with chemical stimuli to regulate cytokine production, and interleukin-6 (IL-6) production is elevated in keratinocytes on stiffer substrates in response to 2,4-dinitrochlorobenzene. We demonstrated that β1 integrin and focal adhesion kinase (FAK) expression were enhanced with increasing stiffness and activation of ERK and the PI3K/Akt pathway was involved in stiffening-mediated IL-6 production. Collectively, our results reveal the critical role of matrix stiffening in modulating the proinflammatory response of keratinocytes, with important clinical implications for skin diseases accompanied by pathological matrix stiffening.
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Affiliation(s)
- Hyewon Chung
- Macrophages Laboratory, Department of Microbiology and Immunology, Institute of Endemic Disease, College of Medicine, Seoul National University, Seoul, South Korea
| | - Seunghee Oh
- School of Mechanical Engineering, Yonsei University, Seoul, South Korea.,Global Technology Center, Samsung Electronics, Co., Ltd., Suwon, South Korea
| | - Hyun-Woo Shin
- Obstructive Upper airway Research (OUaR) Laboratory, Department of Pharmacology, Seoul National University College of Medicine, Seoul, South Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
| | - Yunam Lee
- School of Mechanical Engineering, Yonsei University, Seoul, South Korea
| | - Hyungsuk Lee
- School of Mechanical Engineering, Yonsei University, Seoul, South Korea
| | - Seung Hyeok Seok
- Macrophages Laboratory, Department of Microbiology and Immunology, Institute of Endemic Disease, College of Medicine, Seoul National University, Seoul, South Korea.,Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, South Korea
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6
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Venkatachalam D, Kaliappa S. Superabsorbent polymers: A state-of-art review on their classification, synthesis, physicochemical properties, and applications. REV CHEM ENG 2021. [DOI: 10.1515/revce-2020-0102] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
Superabsorbent polymers (SAP) and modified natural polymer hydrogels are widely and increasingly used in agriculture, health care textiles, effluent treatment, drug delivery, tissue engineering, civil concrete structure, etc. However, not many comprehensive reviews are available on this class of novel polymers. A review covering all the viable applications of SAP will be highly useful for researchers, industry persons, and medical, healthcare, and agricultural purposes. Hence, an attempt has been made to review SAPs with reference to their classifications, synthesis, modification by crosslinking, and physicochemical characterization such as morphology, swellability, thermal and mechanical properties, lifetime prediction, thermodynamics of swelling, absorption, release and transport kinetics, quantification of hydrophilic groups, etc. Besides, the possible methods of fine-tuning their structures for improving their absorption capacity, fast absorption kinetics, mechanical strength, controlled release features, etc. were also addressed to widen their uses. This review has also highlighted the biodegradability, commercial viability and market potential of SAPs, SAP composites, the feasibility of using biomass as raw materials for SAP production, etc. The challenges and future prospects of SAP, their safety, and environmental issues are also discussed.
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Affiliation(s)
- Dhanapal Venkatachalam
- Department of Chemistry , Bannari Amman Institute of Technology , Sathyamangalam , 638 401 , Erode Dt , Tamil Nadu , India
| | - Subramanian Kaliappa
- Biopolymer and Biomaterial Synthesis and Analytical Testing Lab, Department of Biotechnology , Bannari Amman Institute of Technology , Sathyamangalam , 638 401 , Erode Dt , Tamil Nadu , India
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7
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Well-defined organic–inorganic core–shell structure IPN-P(AA-co-AM) polymer spheres by modified suspension polymerization. JOURNAL OF POLYMER RESEARCH 2021. [DOI: 10.1007/s10965-021-02620-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Alsaid Y, Wu S, Wu D, Du Y, Shi L, Khodambashi R, Rico R, Hua M, Yan Y, Zhao Y, Aukes D, He X. Tunable Sponge-Like Hierarchically Porous Hydrogels with Simultaneously Enhanced Diffusivity and Mechanical Properties. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2021; 33:e2008235. [PMID: 33829563 DOI: 10.1002/adma.202008235] [Citation(s) in RCA: 42] [Impact Index Per Article: 14.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/07/2020] [Revised: 02/07/2021] [Indexed: 06/12/2023]
Abstract
Crosslinked polymers and gels are important in soft robotics, solar vapor generation, energy storage, drug delivery, catalysis, and biosensing. However, their attractive mass transport and volume-changing abilities are diffusion-limited, requiring miniaturization to avoid slow response. Typical approaches to improving diffusion in hydrogels sacrifice mechanical properties by increasing porosity or limit the total volumetric flux by directionally confining the pores. Despite tremendous efforts, simultaneous enhancement of diffusion and mechanical properties remains a long-standing challenge hindering broader practical applications of hydrogels. In this work, cononsolvency photopolymerization is developed as a universal approach to overcome this swelling-mechanical property trade-off. The as-synthesized poly(N-isopropylacrylamide) hydrogel, as an exemplary system, presents a unique open porous network with continuous microchannels, leading to record-high volumetric (de)swelling speeds, almost an order of magnitude higher than reported previously. This swelling enhancement comes with a simultaneous improvement in Young's modulus and toughness over conventional hydrogels fabricated in pure solvents. The resulting fast mass transport enables in-air operation of the hydrogel via rapid water replenishment and ultrafast actuation. The method is compatible with 3D printing. The generalizability is demonstrated by extending the technique to poly(N-tertbutylacrylamide-co-polyacrylamide) and polyacrylamide hydrogels, non-temperature-responsive polymer systems, validating the present hypothesis that cononsolvency is a generic phenomenon driven by competitive adsorption.
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Affiliation(s)
- Yousif Alsaid
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90 095, USA
| | - Shuwang Wu
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90 095, USA
| | - Dong Wu
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90 095, USA
| | - Yingjie Du
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90 095, USA
| | - Lingxia Shi
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90 095, USA
| | - Roozbeh Khodambashi
- The Polytechnic School, Fulton School of Engineering, Arizona State University, Mesa, AZ, 85 212, USA
| | - Rossana Rico
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90 095, USA
| | - Mutian Hua
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90 095, USA
| | - Yichen Yan
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90 095, USA
| | - Yusen Zhao
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90 095, USA
| | - Daniel Aukes
- The Polytechnic School, Fulton School of Engineering, Arizona State University, Mesa, AZ, 85 212, USA
| | - Ximin He
- Department of Materials Science and Engineering, University of California, Los Angeles, Los Angeles, CA, 90 095, USA
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9
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Weberová Z, Šourková H, Antoň J, Vacková T, Špatenka P. New Method for Optimization of Polymer Powder Plasma Treatment for Composite Materials. Polymers (Basel) 2021; 13:polym13060965. [PMID: 33809870 PMCID: PMC8004110 DOI: 10.3390/polym13060965] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2021] [Revised: 03/14/2021] [Accepted: 03/18/2021] [Indexed: 12/11/2022] Open
Abstract
This paper describes a newly developed testing method for determination of the adhesivity of a film sintered from thermoplastic powder. This method is based on the modified EN 15337 standard. Application of this method enables an effective development of thermoplastic composites with enhanced adhesion between reinforcement and matrix and/or high-quality joints between plastics and dissimilar materials. The proposed method was successfully tested on a series of polyethylene powders treated in the oxygen atmosphere for 0–1200 s. Adhesion to metal and glass substrates in dependence on treatment conditions is described along with powder wettability and X-ray photoelectron spectroscopy analysis. The results show an increase in adhesion to metal by 580% and to glass by 1670% for the longest treatment time, compared to a nontreated powder. Sintering of treated powders revealed a strong influence of treatment time on the melting process. The XPS analysis confirmed the formation of new oxygen groups (C–O, C=O, O–C=O). The method reveals a specific behavior of powders based on treatment conditions, which is crucial for the optimization of plasma treatment for the improved adhesion, applicability of polymer powders, and a development of composite materials.
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Affiliation(s)
- Zuzana Weberová
- Correspondence: (Z.W.); (P.Š.); Tel.: +420-607-516-901 (Z.W.)
| | | | | | | | - Petr Špatenka
- Correspondence: (Z.W.); (P.Š.); Tel.: +420-607-516-901 (Z.W.)
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10
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Kim S, Kim M, Koh WG. Preparation of Surface-Reinforced Superabsorbent Polymer Hydrogel Microspheres via Incorporation of In Situ Synthesized Silver Nanoparticles. Polymers (Basel) 2021; 13:902. [PMID: 33804248 PMCID: PMC7999066 DOI: 10.3390/polym13060902] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/16/2021] [Revised: 03/04/2021] [Accepted: 03/11/2021] [Indexed: 11/16/2022] Open
Abstract
Superabsorbent polymer (SAP) particles are primarily applied for absorbing and storing liquids. Here, poly (acrylic acid) (PAA)-based SAP microspheres incorporated with silver nanoparticles (AgNPs) are prepared as an effort to maintain microsphere shape during swelling and minimize gel blocking. PAA-based SAP spheres are synthesized via inverse suspension polymerization. AgNPs are formed within SAP spheres through in situ reduction of silver nitrate (AgNO3), using polyvinylpyrrolidone as the reducing agent. The formation of AgNPs within SAP was observed via techniques such as scanning electron microscopy, ultraviolet-visible spectroscopy, thermogravimetric analysis, X-ray photoelectron spectroscopy and transmission electron microscopy. Energy dispersive spectroscopy analyses reveal that thin and dense layers of AgNPs are formed on the outer regions of the SAP spheres at higher concentrations of AgNO3. The water absorbency capacity decreases on increasing the amount of incorporated silver nanoparticles; however, it is comparable with that of commercially available surface-crosslinked SAP particles. Finally, micro-computerized tomography (micro-CT) study revealed that AgNP-incorporated SAP spheres maintained their shapes during swelling and exhibit higher void fractions in the packed gel bed, minimizing gel blocking and improving fluid permeability.
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Affiliation(s)
| | | | - Won-Gun Koh
- Department of Chemical and Biomolecular Engineering, Yonsei University, Seoul 03722, Korea; (S.K.); (M.K.)
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11
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Kim JS, Kim DH, Lee YS. The Influence of Monomer Composition and Surface-CrossLinking Condition on Biodegradation and Gel Strength of Super Absorbent Polymer. Polymers (Basel) 2021; 13:polym13040663. [PMID: 33672256 PMCID: PMC7927004 DOI: 10.3390/polym13040663] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2020] [Revised: 02/11/2021] [Accepted: 02/16/2021] [Indexed: 11/28/2022] Open
Abstract
In this study, a superabsorbent polymer (SAP) comprising poly (IA-co-cellulose-co-VSA-co-AA; ICVA) core-SAP (CSAP) was synthesized through radical polymerization using itaconic acid (IA), acrylic acid (AA), cellulose, and vinyl sulfonic acid (VSA) as monomers. The absorption performances and relative biodegradability of various compositions prepared by adjusting the amounts of cellulose and VSA with constant IA and AA content were compared. Increasing the cellulose content in CSAP contributed to improved biodegradation of the surface-crosslinked SAP (SSAP) and gel strength, although the free absorbency (FA) and centrifuge retention capacity (CRC) decreased. Increasing the VSA content resulted in strong anionicity, which enables the absorption of large amounts of water. Surface-crosslinking technology was applied to the CSAP synthesized with the optimal composition ratio to increase its absorption performance and gel strength. Improved performance of the synthesized SSAP (a CRC of 30.4 g/g, absorbency under load (AUL) of 23.3 g/g, and permeability of 55 s) was achieved by selecting the optimal surface-crosslinking treatment time and the amount of distilled water in the surface-crosslinking solution: as the latter was increased in the surface-crosslinking solution, the AUL and permeability of the SSAP were improved, and its biodegradability was found to be 54% compared to the 100% biodegradable cellulose hydrogel in the control group.
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Affiliation(s)
- Jung Soo Kim
- Department of Packaging, Yonsei University, Wonju 26493, Korea;
- Human Convergence Technology R&D Departments, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea;
| | - Dong Hyun Kim
- Human Convergence Technology R&D Departments, Korea Institute of Industrial Technology (KITECH), Ansan 15588, Korea;
| | - Youn Suk Lee
- Department of Packaging, Yonsei University, Wonju 26493, Korea;
- Correspondence: ; Tel.: +82-33-760-2395
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12
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Preparation and characterization of superabsorbent polymers (SAPs) surface-crosslinked with polycations. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104774] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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13
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Recent Developments and Future Challenges of Hydrogels as Draw Solutes in Forward Osmosis Process. WATER 2020. [DOI: 10.3390/w12030692] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Forward osmosis (FO) has been recently regarded as a promising water treatment technology due to its lower energy consumption and lower membrane fouling propensity compared to the reverse osmosis (RO). The absence of suitable draw solute constraints the wide-range application of the FO. Hydrogels are three-dimensional hydrophilic polymer networks that can absorb a huge amount of water. Particularly, stimuli-responsive polymer hydrogels can undergo a reversible volume change or solution-gel phase transition in response to external environmental stimuli, including temperature, light, pressure, solvent composition, and pH. These intrinsic properties indicate the lowest regeneration cost of draw solutes compared to the thermal method and other membrane processes. This review aims to introduce the research progress on hydrogels as draw solutes, clarify the existing problems and point out the further research direction.
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14
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Oh S, Nguyen QD, Chung KH, Lee H. Bundling of Collagen Fibrils Using Sodium Sulfate for Biomimetic Cell Culturing. ACS OMEGA 2020; 5:3444-3452. [PMID: 32118158 PMCID: PMC7045499 DOI: 10.1021/acsomega.9b03704] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2019] [Accepted: 01/31/2020] [Indexed: 06/10/2023]
Abstract
Collagen is the most abundant extracellular matrix protein. The concentrations, structural arrangement, and directionality of collagen depend on the type of tissue. Thick fibril bundles of collagen are observed in most collagenous tissues, including connective tissues, bones, and tendons, indicating that they play a critical role in many cell functions. In this study, we developed a new method to regulate collagen bundling without altering the protein concentration, temperature, or pH by using sodium sulfate to replicate bundled collagen fibrils found in vivo. Microstructure analysis revealed that both the thickness of the fibril bundles and the pore size of the matrix increased with the amount of sodium sulfate. In contrast, there was no significant change in the bulk mechanical stiffness of the collagen matrix. The modified collagen bundle matrix was used to investigate the responses of human cervical cancer cells by mimicking the extracellular environments of a tumor. Compared to the normal collagen matrix, cells on the collagen bundle matrix exhibited significant changes in morphology, with a reduced cell perimeter and aspect ratio. The cell motility, which was analyzed in terms of the speed of migration and mean squared displacement, decreased for the collagen bundle matrix. Additionally, the critical time taken for the peak turning angle to converge to 90° decreased, indicating that the migration direction was regulated by geometric cues provided by collagen bundles rather than by the intrinsic cell persistence. The experimental results imply that collagen bundles play an important role in determining the magnitude and direction in cancer cell migration. The proposed method of extracellular matrix modification can be applied to investigate various cellular behaviors in both physiological and pathological environments.
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Affiliation(s)
- Seunghee Oh
- School of Mechanical
Engineering, Yonsei University, Seoul 03722, South Korea
- Global Technology Center, Samsung
Electronics, Co., Ltd., Suwon 16677, South Korea
| | - Quang Dang Nguyen
- School of Mechanical Engineering, University of Ulsan, Ulsan 44610, South
Korea
| | - Koo-Hyun Chung
- School of Mechanical Engineering, University of Ulsan, Ulsan 44610, South
Korea
| | - Hyungsuk Lee
- School of Mechanical
Engineering, Yonsei University, Seoul 03722, South Korea
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15
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Kim YJ, Hong SJ, Shin WS, Kwon YR, Lim SH, Kim HC, Kim JS, Kim JW, Kim DH. Preparation of a biodegradable superabsorbent polymer and measurements of changes in absorption properties depending on the type of surface‐crosslinker. POLYM ADVAN TECHNOL 2019. [DOI: 10.1002/pat.4767] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yoo Jin Kim
- Human Convergence Technology GroupKorea Institute of Industrial Technology (KITECH) 143, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
- Department of Bio‐nano EngineeringHanyang University 55, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
| | - Seok Ju Hong
- Human Convergence Technology GroupKorea Institute of Industrial Technology (KITECH) 143, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
- Department of Material Chemical EngineeringHanyang University 55, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
| | - Woo Seung Shin
- Human Convergence Technology GroupKorea Institute of Industrial Technology (KITECH) 143, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
- Department of Material Chemical EngineeringHanyang University 55, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
| | - Yong Rok Kwon
- Human Convergence Technology GroupKorea Institute of Industrial Technology (KITECH) 143, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
- Department of Material Chemical EngineeringHanyang University 55, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
| | - Seung Ho Lim
- Human Convergence Technology GroupKorea Institute of Industrial Technology (KITECH) 143, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
- Department of Material Chemical EngineeringHanyang University 55, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
| | - Hae Chan Kim
- Human Convergence Technology GroupKorea Institute of Industrial Technology (KITECH) 143, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
- Department of Material Chemical EngineeringHanyang University 55, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
| | - Jung Soo Kim
- Human Convergence Technology GroupKorea Institute of Industrial Technology (KITECH) 143, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
- Department of PackagingYonsei University 1, Yeonsedae‐gil Heungeop‐myeon, Wonju‐si Gangwon‐do 26493 Republic of Korea
| | - Jin Woong Kim
- Department of Chemical EngineeringSungkyunkwan University 2066, Seobu‐ro Jangan‐gu, Suwon‐si Gyeonggi‐do 16419 Republic of Korea
| | - Dong Hyun Kim
- Human Convergence Technology GroupKorea Institute of Industrial Technology (KITECH) 143, Hanggaul‐ro Sangnok‐gu, Ansan‐si Gyeonggi‐do 15588 Republic of Korea
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16
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Dabbaghi A, Jahandideh A, Kabiri K, Ramazani A, Zohuriaan-Mehr MJ. The synthesis and incorporation of a star-shaped bio-based modifier in the acrylic acid based superabsorbent: a strategy to enhance the absorbency under load. POLYM-PLAST TECH MAT 2019. [DOI: 10.1080/25740881.2018.1563140] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | - Arash Jahandideh
- Adhesive and Resin Department, Iran Polymer and Petrochemical Institute, Tehran, Iran
| | - Kourosh Kabiri
- Adhesive and Resin Department, Iran Polymer and Petrochemical Institute, Tehran, Iran
- Biomass Conversion Science and Technology (BCST) Division, Iran Polymer and Petrochemical Institute, Tehran, Iran
| | - Ali Ramazani
- Department of Chemistry, University of Zanjan, Zanjan, Iran
| | - Mohammad J. Zohuriaan-Mehr
- Adhesive and Resin Department, Iran Polymer and Petrochemical Institute, Tehran, Iran
- Biomass Conversion Science and Technology (BCST) Division, Iran Polymer and Petrochemical Institute, Tehran, Iran
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