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Cao X, Cao Q, Zhang T, Ji W, Muhammad U, Chen J, Wei Y. Hydrophobically Associated Hydrogel for High Sensitivity and Resolution of an Interdigital Electrode Pressure Sensor. Biomacromolecules 2024; 25:143-154. [PMID: 38054613 DOI: 10.1021/acs.biomac.3c00884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Hydrogel-based flexible strain sensors have been known for their excellent ability to convert different motions of humans into electrical signals, thus enabling real-time monitoring of various human health parameters. In this work, a composite hydrogel with hydrophobic association and hybrid cross-linking was fabricated by using polyacrylamide (PAm), surfactant sodium dodecyl sulfate (SDS), lauryl methacrylate (LMA), and polypyrrole (PPy). The dynamic dissociation-conjugation among LMA, SDS, and PPy could dissipate energy to improve the toughness of hydrogels. The SDS/PPy/LMPAm composite hydrogel with a toughness of 1.44 MJ/m3, tensile fracture stress of 345 kPa, tensile strain of 1021%, and electrical conductivity of 0.57 S/m was obtained. Furthermore, an interdigital electrode flexible pressure sensor was designed to replace the bipolar electrode flexible pressure sensor, which greatly improved the sensitivity and resolution of the pressure sensor. The SDS/PPy/LMPAm composite hydrogel-based interdigital electrode flexible pressure sensor showed extraordinary stability and identified different hand gestures as well as monitored the pulse signal of humans. Moreover, the characteristic systolic and diastolic peaks were clearly observed. The pulse frequency (65 times/min) and the radial artery augmentation index (0.57) were calculated, which are very important in evaluating the arterial vessel wall and function of human arteries.
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Affiliation(s)
- Xuan Cao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road East, Chaoyang District, Beijing 100029, P. R. China
| | - Qinglong Cao
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road East, Chaoyang District, Beijing 100029, P. R. China
| | - Taoyi Zhang
- Sinopec Beijing Research Institute of Chemical Industry, 14 North Third Ring Road East, Chaoyang District, Beijing 100014, China
| | - Wenxi Ji
- Sinopec Beijing Research Institute of Chemical Industry, 14 North Third Ring Road East, Chaoyang District, Beijing 100014, China
| | - Usman Muhammad
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road East, Chaoyang District, Beijing 100029, P. R. China
| | - Jing Chen
- Sinopec Beijing Research Institute of Chemical Industry, 14 North Third Ring Road East, Chaoyang District, Beijing 100014, China
| | - Yun Wei
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, 15 North Third Ring Road East, Chaoyang District, Beijing 100029, P. R. China
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2
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Kumar M, Kumar D, Garg Y, Mahmood S, Chopra S, Bhatia A. Marine-derived polysaccharides and their therapeutic potential in wound healing application - A review. Int J Biol Macromol 2023; 253:127331. [PMID: 37820901 DOI: 10.1016/j.ijbiomac.2023.127331] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 10/04/2023] [Accepted: 10/07/2023] [Indexed: 10/13/2023]
Abstract
Polysaccharides originating from marine sources have been studied as potential material for use in wound dressings because of their desirable characteristics of biocompatibility, biodegradability, and low toxicity. Marine-derived polysaccharides used as wound dressing, provide several benefits such as promoting wound healing by providing a moist environment that facilitates cell migration and proliferation. They can also act as a barrier against external contaminants and provide a protective layer to prevent further damage to the wound. Research studies have shown that marine-derived polysaccharides can be used to develop different types of wound dressings such as hydrogels, films, and fibres. These dressings can be personalised to meet specific requirements based on the type and severity of the wound. For instance, hydrogels can be used for deep wounds to provide a moist environment, while films can be used for superficial wounds to provide a protective barrier. Additionally, these polysaccharides can be modified to improve their properties, such as enhancing their mechanical strength or increasing their ability to release bioactive molecules that can promote wound healing. Overall, marine-derived polysaccharides show great promise for developing effective and safe wound dressings for various wound types.
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Affiliation(s)
- Mohit Kumar
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda 151001, Punjab, India
| | - Devesh Kumar
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda 151001, Punjab, India
| | - Yogesh Garg
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda 151001, Punjab, India
| | - Syed Mahmood
- Department of Pharmaceutical Technology, Faculty of Pharmacy, Universiti Malaya, 50603 Kuala Lumpur, Malaysia
| | - Shruti Chopra
- Amity Institute of Pharmacy, Amity University, Noida, Uttar Pradesh 201313, India
| | - Amit Bhatia
- Department of Pharmaceutical Sciences and Technology, Maharaja Ranjit Singh Punjab Technical University (MRSPTU), Bathinda 151001, Punjab, India.
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3
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Yan X, Yu J, Zhang Y, Jia Y, Chen K, Chen Q, Zhang X, Feng H, Feng C, Zhang D. Construction and Properties of High-Toughness Soft-Soft Interfaces Based on the Adhesion of Natural Polyphenols. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2023; 39:16261-16271. [PMID: 37945037 DOI: 10.1021/acs.langmuir.3c01610] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2023]
Abstract
Artificial joint replacement is the most effective way to treat osteoarthritis. However, these artificial joints are too stiff with high interfacial contact stress and poor surface lubrication, resulting in stress shielding and severe wear and tear lead to an extremely high failure rate. At present, hydrogels are considered the most promising substitute for artificial joint prostheses owing to their good biocompatibility, adjustable mechanical properties, and excellent flexibility. Nevertheless, a traditional single-layer hydrogel has poor bearing capacity and lubrication, which are far from the properties of natural articular cartilage. The high strength and low friction properties of natural articular cartilage are based on its own multilayer fibrous structure. Therefore, by simulating the multilayer structure of natural cartilage, a bilayer bionic cartilage hydrogel was prepared; that is, the upper hydrogel realized excellent lubrication and the lower hydrogel realized high load-bearing capacity. However, the interface binding of bilayer hydrogels is a challenge at present. Therefore, the interfacial adhesion of the bilayer hydrogel is improved by adding tannic acid (TA) based on the adhesion of the natural polyphenol structure. The average interfacial toughness reaches 3650 J/m2, and the average interfacial shear force reaches 800 kPa. In the preparation of the bilayer hydrogel, taking advantage of the coordination reaction between TA and metal cations, Fe3+ is further added to endow the bilayer hydrogel with excellent mechanical properties and good sliding friction performance. Therefore, this work opens up a new way to construct cartilage-like materials with high toughness and a soft-soft interface.
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Affiliation(s)
- Xiaodong Yan
- School of Materials Science and Physics, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
| | - Jia Yu
- School of Materials Science and Physics, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
| | - Yitong Zhang
- School of Materials Science and Physics, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
| | - Yuchen Jia
- School of Materials Science and Physics, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
| | - Kai Chen
- School of Materials Science and Physics, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Qin Chen
- School of Materials Science and Physics, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
| | - Xinyue Zhang
- School of Materials Science and Physics, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
| | - Haiyan Feng
- School of Materials Science and Physics, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
| | - Cunao Feng
- School of Materials Science and Physics, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
| | - Dekun Zhang
- School of Materials Science and Physics, School of Chemical Engineering and Technology, China University of Mining and Technology, Xuzhou 221116, China
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Li K, Zhu Y, Zhang Q, Shi Y, Yan T, Lu X, Sun H, Li T, Li Z, Shi X, Han D. Interstitial Injection of Hydrogels with High-Mechanical Conductivity Relieves Muscle Atrophy Induced by Nerve Injury. Adv Healthc Mater 2023; 12:e2202707. [PMID: 37409443 DOI: 10.1002/adhm.202202707] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 06/13/2023] [Accepted: 06/24/2023] [Indexed: 07/07/2023]
Abstract
Injectable hydrogels have been extensively used in tissue engineering where high mechanical properties are key for their functionality at sites of high physiological stress. In this study, an injectable, conductive hydrogel is developed exhibiting remarkable mechanical strength that can withstand a pressure of 500 kPa (85% deformation rate) and display good fatigue resistance, electrical conductivity, and tissue adhesion. A stable covalent cross-linked network with a slip-ring structure by threading amino β-cyclodextrin is formed onto the chain of a four-armed (polyethylene glycol) amino group, and then reacted with the four-armed (polyethylene glycol) maleimide under physiological conditions. The addition of silver nanowires enhances the hydrogel's electrical conductivity, enabling it to act as a good conductor in vivo. The hydrogel is injected into the fascial space, and the results show that the weight and muscle tone of the atrophied gastrocnemius muscle improve, subsequently alleviating muscle atrophy. Overall, this study provides a simple method for the preparation of a conductive hydrogel with high mechanical properties. In addition, the interstitial injection provides a strategy for the use of hydrogels in vivo.
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Affiliation(s)
- Kai Li
- College of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Yuting Zhu
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Qiang Zhang
- Hebei Key Laboratory of Nanobiotechnology, Yanshan University, Qinhuangdao, 066004, China
| | - Yahong Shi
- College of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Tun Yan
- College of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Xi Lu
- College of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Huizhen Sun
- College of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Tingting Li
- College of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Zhongxian Li
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
| | - Xiaoli Shi
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Dong Han
- College of Life Science, Beijing University of Chinese Medicine, Beijing, 100029, China
- CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
- School of Future Technology, University of Chinese Academy of Sciences, Beijing, 100049, China
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5
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Mondal AK, Uddin MT, Sujan SMA, Tang Z, Alemu D, Begum HA, Li J, Huang F, Ni Y. Preparation of lignin-based hydrogels, their properties and applications. Int J Biol Macromol 2023; 245:125580. [PMID: 37379941 DOI: 10.1016/j.ijbiomac.2023.125580] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2023] [Revised: 06/12/2023] [Accepted: 06/24/2023] [Indexed: 06/30/2023]
Abstract
Polymers obtained from biomass are a concerning alternative to petro-based polymers because of their low cost of manufacturing, biocompatibility, ecofriendly and biodegradability. Lignin as the second richest and the only polyaromatics bio-polymer in plant which has been most studied for the numerous applications in different fields. But, in the past decade, the exploitation of lignin for the preparation of new smart materials with improved properties has been broadly sought, because lignin valorization plays one of the primary challenging issues of the pulp and paper industry and lignocellulosic biorefinery. Although, well suited chemical structure of lignin comprises of many functional hydrophilic and active groups, such as phenolic hydroxyls, carboxyls and methoxyls, which provides a great potential to be applied in the preparation of biodegradable hydrogels. In this review, lignin hydrogel is covered with preparation strategies, properties and applications. This review reports some important properties, such as mechanical, adhesive, self-healing, conductive, antibacterial and antifreezing properties were then discussed. Furthermore, herein also reviewed the current applications of lignin hydrogel, including dye adsorption, smart materials for stimuli sensitive, wearable electronics for biomedical applications and flexible supercapacitors. Overall, this review covers recent progresses regarding lignin-based hydrogel and constitutes a timely review of this promising material.
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Affiliation(s)
- Ajoy Kanti Mondal
- Leather Research Institute, Bangladesh Council of Scientific and Industrial Research, Savar, Dhaka 1350, Bangladesh.
| | - Md Tushar Uddin
- Leather Research Institute, Bangladesh Council of Scientific and Industrial Research, Savar, Dhaka 1350, Bangladesh
| | - S M A Sujan
- Leather Research Institute, Bangladesh Council of Scientific and Industrial Research, Savar, Dhaka 1350, Bangladesh
| | - Zuwu Tang
- School of Materials and Environmental Engineering, Fujian Polytechnic Normal University, No.1, Campus New Village, Longjiang Street, Fuzhou 350300, China
| | - Digafe Alemu
- College of Biological and Chemical Engineering, Department of Biotechnology, Addis Ababa Science and Technology University, Addis Ababa 16417, Ethiopia
| | - Hosne Ara Begum
- Department of Chemistry, University of Dhaka, Dhaka 1000, Bangladesh
| | - Jianguo Li
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, Fujian, China
| | - Fang Huang
- College of Material Engineering, Fujian Agriculture and Forestry University, Fuzhou 350108, Fujian, China
| | - Yonghao Ni
- Department of Chemical and Biomedical Engineering, University of Maine, Orono, ME 04469, USA
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6
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Chen Q, Yan X, Chen K, Feng C, Wang D, Li X, Zhao X, Chai Z, Wang Q, Zhang D, Zeng H. Electrospun fibrous membrane reinforced hydrogels with preferable mechanical and tribological performance as cartilage substitutes. J Mater Chem B 2023; 11:1713-1724. [PMID: 36723224 DOI: 10.1039/d2tb02511f] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
Hydrogels have attracted much attention as cartilage substitutes due to their human tissue-like characteristics. However, developing cartilage substitutes require the combination of high mechanical strength and low friction. Despite great success in tough hydrogels, this combination was hardly realized. Inspired by the natural cartilage, electrospun fibrous membrane reinforced hydrogels with superior mechanical properties and low friction coefficient were designed using electrospinning, freeze-thawing, and annealing techniques. An ordered fibrous membrane was first constructed by electrospinning, in which the tensile strength and modulus have been improved successfully. Then the PVA/PAA/GO hydrogel was modified layer-by-layer by the multilayer ordered electrospun membrane of PVA/PAA/GO. The ordered fibrous membrane significantly enhanced the mechanical strength and friction properties in a manner that mimicked the collagen fibrils in the cartilage. When the number of the membranes was 4, the mechanical properties of the fibrous membrane reinforced hydrogel is maximized, which can be compared to natural cartilage, which can achieve a tensile strength of 13.7 ± 1.5 MPa, tensile modulus of 27.5 ± 3.2 MPa, compressive strength of 12.32 ± 1.35 MPa, compressive modulus of 20.35 ± 2.50 MPa. The ordered fibrous membrane endows the hydrogel with a higher tearing energy of 39.16 ± 4.05 KJ m-2, which is the 5 times that of pure hydrogel (7.74 ± 0.86 KJ m-2). In addition, the friction coefficient of the fibrous membrane reinforced hydrogel is as low as 0.039, 2 times smaller than that of the hydrogel without addition of the fibrous membrane. Therefore, such hydrogels had excellent mechanical properties and tribological properties, which could be widely used in tissue engineering such as in cartilage replacement.
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Affiliation(s)
- Qin Chen
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China.
| | - Xiaodong Yan
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China.
| | - Kai Chen
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China. .,State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China.,State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Cunao Feng
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China.
| | - Dagang Wang
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China.
| | - Xiaowei Li
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China.
| | - Xiaoduo Zhao
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 730000, China
| | - Zhimin Chai
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Qingliang Wang
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China.
| | - Dekun Zhang
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou 221116, China.
| | - Hongbo Zeng
- Department of Chemical and Materials Engineering, University of Alberta, Edmonton, Alberta T6G 1H9, Canada
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Yu JY, Moon SE, Kim JH, Kang SM. Ultrasensitive and Highly Stretchable Multiple-Crosslinked Ionic Hydrogel Sensors with Long-Term Stability. NANO-MICRO LETTERS 2023; 15:51. [PMID: 36790572 PMCID: PMC9931967 DOI: 10.1007/s40820-023-01015-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Accepted: 12/26/2022] [Indexed: 06/18/2023]
Abstract
Flexible hydrogels are receiving significant attention for their application in wearable sensors. However, most hydrogel materials exhibit weak and one-time adhesion, low sensitivity, ice crystallization, water evaporation, and poor self-recovery, thereby limiting their application as sensors. These issues are only partly addressed in previous studies. Herein, a multiple-crosslinked poly(2-(methacryloyloxy)ethyl)dimethyl-(3-sulfopropyl)ammonium hydroxide-co-acrylamide) (P(SBMA-co-AAm)) multifunctional hydrogel is prepared via a one-pot synthesis method to overcome the aforementioned limitations. Specifically, ions, glycerol, and 2-(methacryloyloxy)ethyl)dimethyl-(3-sulfopropyl)ammonium hydroxide are incorporated to reduce the freezing point and improve the moisture retention ability. The proposed hydrogel is superior to existing hydrogels because it exhibits good stretchability (a strain of 2900%), self-healing properties, and transparency through effective energy dissipation in its dynamic crosslinked network. Further, 2-(methacryloyloxy)ethyl)dimethyl-(3-sulfopropyl)ammonium hydroxide as a zwitterion monomer results in an excellent gauge factor of 43.4 at strains of 1300-1600% by improving the ion transportability and achieving a strong adhesion of 20.9 kPa owing to the dipole-dipole moment. The proposed hydrogel is promising for next-generation biomedical applications, such as soft robots, and health monitoring.
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Affiliation(s)
- Jin-Young Yu
- Department of Mechanical Engineering, Chungnam National University, Daejeon, 34134, Korea
| | - Seung Eon Moon
- Emerging Nano-Materials Research Section, Electronics and Telecommunications Research Institute, Daejeon, 305-700, Republic of Korea
| | - Jeong Hun Kim
- Emerging Nano-Materials Research Section, Electronics and Telecommunications Research Institute, Daejeon, 305-700, Republic of Korea.
| | - Seong Min Kang
- Department of Mechanical Engineering, Chungnam National University, Daejeon, 34134, Korea.
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State of the Art of Hydrogel Wound Dressings Developed by Ionizing Radiation. Gels 2023; 9:gels9010055. [PMID: 36661821 PMCID: PMC9858288 DOI: 10.3390/gels9010055] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/05/2023] [Accepted: 01/09/2023] [Indexed: 01/12/2023] Open
Abstract
The development of an ideal hydrogel wound dressing with excellent characteristics is currently a significant demand in wound therapy. The ideal hydrogel wound dressing must provide a moist environment between the wound and the dressing, promote wound healing, absorb excess exudate and toxins, be completely sterile, and not adhere to the wound. The evolution and current status of research on hydrogel wound dressings obtained exclusively through production by ionizing radiation are discussed in this paper review, along with the preparation methods, properties, standard characterization techniques, and their applications in wound dressing. First, we described the methods for synthesizing hydrogel wound dressings with ionizing radiation. Then, standard methods of characterization of hydrogel wound dressings such as gel fraction, swelling degree, sol-gel analysis, rheological properties, morphology, moisture retention capability, and water vapor transmission rate have been investigated. In the end, specific attention was paid to the drug release, antibacterial performance, and cytotoxicity of hydrogels. Moreover, the application of hydrogel in regenerative medicine as wound healing dressing was covered.
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9
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Tang Y, Wang H, Liu S, Pu L, Hu X, Ding J, Xu G, Xu W, Xiang S, Yuan Z. A review of protein hydrogels: Protein assembly mechanisms, properties, and biological applications. Colloids Surf B Biointerfaces 2022. [DOI: 10.1016/j.colsurfb.2022.112973] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Chen Q, Zhang X, Chen K, Feng C, Wang D, Qi J, Li X, Zhao X, Chai Z, Zhang D. Bilayer Hydrogels with Low Friction and High Load-Bearing Capacity by Mimicking the Oriented Hierarchical Structure of Cartilage. ACS APPLIED MATERIALS & INTERFACES 2022; 14:52347-52358. [PMID: 36349936 DOI: 10.1021/acsami.2c13641] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Natural articular cartilages exhibit extraordinary lubricating properties and excellent load-bearing capacity based on their penetrated surface lubricated biomacromolecules and gradient-oriented hierarchical structure. Hydrogels are considered as the most promising cartilage replacement materials due to their excellent flexibility, good biocompatibility, and low friction coefficient. However, the construction of high-strength, low-friction hydrogels to mimic cartilage is still a great challenge. Here, inspired by the structure and functions of natural articular cartilage, anisotropic hydrogels with horizontal and vertical orientation structure were constructed layer by layer and bonded with each other, successfully developing a bilayer oriented heterogeneous hydrogel with a high load-bearing capacity, low friction, and excellent fatigue resistance. The bilayer hydrogel exhibited a high compressive strength of 5.21 ± 0.45 MPa and a compressive modulus of 4.06 ± 0.31 MPa due to the enhancement mechanism of the anisotropic structure within the bottom anisotropic hydrogel. Moreover, based on the synergistic effect of the high load-bearing capacity of the bottom layer and the lubrication of the surface layer, the bilayer hydrogel possesses excellent biotribological properties in hard/soft (0.032) and soft/soft (0.028) contact, which is close to that of natural cartilage. It is worth noting that the bilayer oriented heterogeneous hydrogel is able to withstand repeated loading without fatigue crack. Therefore, this work could open up a new avenue for constructing cartilage-like materials with both high strength and low friction.
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Affiliation(s)
- Qin Chen
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou221116, China
| | - Xinyue Zhang
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou221116, China
| | - Kai Chen
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou221116, China
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou730000, China
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing100084, China
| | - Cunao Feng
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou221116, China
| | - Dagang Wang
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou221116, China
| | - Jianwei Qi
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou221116, China
| | - Xiaowei Li
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou221116, China
| | - Xiaoduo Zhao
- State Key Laboratory of Solid Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou730000, China
| | - Zhimin Chai
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing100084, China
| | - Dekun Zhang
- School of Chemical Engineering and Technology, School of Materials Science and Physics, School of Mechatronic Engineering, China University of Mining and Technology, Xuzhou221116, China
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11
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High-strength, tough, and anti-swelling Schiff base hydrogels with fluorescent encryption writing, solvent response and double shape memory functions. Eur Polym J 2022. [DOI: 10.1016/j.eurpolymj.2022.111487] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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12
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Chen X, Qi S, Yan D. Reversible cross-linking facilitates the formation of critical nucleus in binary polymer blends. J Chem Phys 2022; 156:124903. [PMID: 35364867 DOI: 10.1063/5.0086136] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
Using self-consistent field theory, we study the effect of reversible cross-linking on the nucleation behavior of a binary polymer blend where only one of the components is able to form cross-links. To control the total number of cross-links and their distribution, we introduce a position-dependent cross-linking probability function that is characterized mainly by two parameters, the magnitude and the width. In the weakly cross-linked region, where the product of the magnitude and width, I, is small, the nucleation behavior is classical-like and the profile of the free energy excess is unimodal. In contrast, in the strongly cross-linked region, the profile of the free energy excess becomes bimodal, and the free energy minimum specifies a metastable nucleus. In a certain I, the free energy barrier for the metastable nucleus turns to be negative, which means it becomes more stable. In both cases, the free energy barrier of the critical nucleus is lower than that without cross-linking, indicating that cross-linking always facilitates nucleation although the dynamic behavior may be different when a metastable nucleus is involved during the nucleation process. The free energy analysis demonstrates that the interaction energy rather than the entropy is responsible for the properties of the critical nucleus. Our study provides an easy alternative way for the control of the nucleation behavior and may attract practical interest.
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Affiliation(s)
- Xinxiang Chen
- Department of Physics, Beijing Normal University, Beijing 100875, China
| | - Shuanhu Qi
- Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, School of Chemistry, Beihang University, Beijing 100191, China
| | - Dadong Yan
- Department of Physics, Beijing Normal University, Beijing 100875, China
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13
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Xu P, Zong Y, Shang Z, Yao M, Liu P, Li X. Improving the mechanical performance of P(N‐hydroxymethyl acrylamide/acrylic acid/2‐acrylamido‐2‐methylpropanesulfonic acid) hydrogel via hydrophobic modified nanosilica. J Appl Polym Sci 2021. [DOI: 10.1002/app.51987] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pan Xu
- Department of Chemistry and Chemical Engineering University of Science and Technology Beijing Beijing China
| | - Yi Zong
- Department of Chemistry and Chemical Engineering University of Science and Technology Beijing Beijing China
| | - Zhijie Shang
- Department of Chemistry and Chemical Engineering University of Science and Technology Beijing Beijing China
| | - Meiling Yao
- Department of Chemistry and Chemical Engineering University of Science and Technology Beijing Beijing China
| | - Pingde Liu
- Research Institute of Petroleum Exploration and Development PetroChina Beijing China
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Su J, Li J, Liang J, Zhang K, Li J. Hydrogel Preparation Methods and Biomaterials for Wound Dressing. Life (Basel) 2021; 11:life11101016. [PMID: 34685387 PMCID: PMC8540918 DOI: 10.3390/life11101016] [Citation(s) in RCA: 81] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 09/22/2021] [Accepted: 09/23/2021] [Indexed: 12/13/2022] Open
Abstract
Wounds have become one of the causes of death worldwide. The metabolic disorder of the wound microenvironment can lead to a series of serious symptoms, especially chronic wounds that bring great pain to patients, and there is currently no effective and widely used wound dressing. Therefore, it is important to develop new multifunctional wound dressings. Hydrogel is an ideal dressing candidate because of its 3D structure, good permeability, excellent biocompatibility, and ability to provide a moist environment for wound repair, which overcomes the shortcomings of traditional dressings. This article first briefly introduces the skin wound healing process, then the preparation methods of hydrogel dressings and the characteristics of hydrogel wound dressings made of natural biomaterials and synthetic materials are introduced. Finally, the development prospects and challenges of hydrogel wound dressings are discussed.
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Affiliation(s)
- Jingjing Su
- School of Life Science, Zhengzhou University, 100 Science Road, Zhengzhou 450001, China; (J.S.); (J.L.); (J.L.)
| | - Jiankang Li
- School of Life Science, Zhengzhou University, 100 Science Road, Zhengzhou 450001, China; (J.S.); (J.L.); (J.L.)
| | - Jiaheng Liang
- School of Life Science, Zhengzhou University, 100 Science Road, Zhengzhou 450001, China; (J.S.); (J.L.); (J.L.)
| | - Kun Zhang
- School of Life Science, Zhengzhou University, 100 Science Road, Zhengzhou 450001, China; (J.S.); (J.L.); (J.L.)
- Correspondence: (K.Z.); (J.L.); Tel.:+86-185-3995-8495 (K.Z.); +86-185-3995-6211 (J.L.)
| | - Jingan Li
- School of Materials Science and Engineering, Zhengzhou University, 100 Science Road, Zhengzhou 450001, China
- Correspondence: (K.Z.); (J.L.); Tel.:+86-185-3995-8495 (K.Z.); +86-185-3995-6211 (J.L.)
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15
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Roshandel M, Dorkoosh F. Cardiac tissue engineering, biomaterial scaffolds, and their fabrication techniques. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5273] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Marjan Roshandel
- School of Chemical Engineering, College of Engineering University of Tehran Tehran Iran
| | - Farid Dorkoosh
- Department of Pharmaceutics, Faculty of Pharmacy Tehran University of Medical Sciences Tehran Iran
- Medical Biomaterial Research Centre (MBRC) Tehran University of Medical Sciences Tehran Iran
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16
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Modulating the physico-mechanical properties of polyacrylamide/gelatin hydrogels for tissue engineering application. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-021-03592-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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17
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Ding J, Zhang H, Wang W, Zhu Y, Wang Q, Wang A. Synergistic effect of palygorskite nanorods and ion crosslinking to enhance sodium alginate-based hydrogels. Eur Polym J 2021. [DOI: 10.1016/j.eurpolymj.2021.110306] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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18
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19
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A dual-cross-linked hydrogel based on hyaluronic acid/gelatin tethered via tannic acid: mechanical properties’ enhancement and stability control. IRANIAN POLYMER JOURNAL 2021. [DOI: 10.1007/s13726-020-00891-9] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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20
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Prado RMB, Mishra S, Morgan B, Wijayapala R, Hashemnejad SM, Kundu S. Achieving High-Speed Retraction in Stretchable Hydrogels. ACS APPLIED MATERIALS & INTERFACES 2020; 12:40719-40727. [PMID: 32805889 DOI: 10.1021/acsami.0c08132] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Hydrogels mimicking elastomeric biopolymers such as resilin, responsible for power-amplified activities in biological species necessary for locomotion, feeding, and defense have applications in soft robotics and prosthetics. Here, we report a bioinspired hydrogel synthesized through a free-radical polymerization reaction. By maintaining a balance between the hydrophilic and hydrophobic components, we obtain gels with an elastic modulus as high as 100 kPa, stretchability up to 800%, and resilience up to 98%. Such properties enable these gels to catapult projectiles. Furthermore, these gels achieve a retraction velocity of 16 m s-1 with an acceleration of 4 × 103 m s-2 when released from a stretched state, and these values are comparable to those observed in many biological species during a power amplification process. By utilizing and tuning the simple synthetic strategy used here, these gels can be used in soft robotics, prosthetics, and engineered devices where power amplification is desired.
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Affiliation(s)
- Rosa Maria Badani Prado
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, 323 Presidents Circle, Mississippi State, Mississippi 39762, United States
| | - Satish Mishra
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, 323 Presidents Circle, Mississippi State, Mississippi 39762, United States
| | - Buckston Morgan
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, 323 Presidents Circle, Mississippi State, Mississippi 39762, United States
| | - Rangana Wijayapala
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, 323 Presidents Circle, Mississippi State, Mississippi 39762, United States
| | - Seyed Meysam Hashemnejad
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, 323 Presidents Circle, Mississippi State, Mississippi 39762, United States
| | - Santanu Kundu
- Dave C. Swalm School of Chemical Engineering, Mississippi State University, 323 Presidents Circle, Mississippi State, Mississippi 39762, United States
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21
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22
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Dual physically and chemically cross-linked polyelectrolyte nanohydrogels: Compositional and pH-dependent behavior studies. Eur Polym J 2020. [DOI: 10.1016/j.eurpolymj.2019.109398] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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23
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Kumar BYS, Isloor AM, Kumar GCM, Inamuddin, Asiri AM. Nanohydroxyapatite Reinforced Chitosan Composite Hydrogel with Tunable Mechanical and Biological Properties for Cartilage Regeneration. Sci Rep 2019; 9:15957. [PMID: 31685836 PMCID: PMC6828803 DOI: 10.1038/s41598-019-52042-7] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 10/11/2019] [Indexed: 01/09/2023] Open
Abstract
With the continuous quest of developing hydrogel for cartilage regeneration with superior mechanobiological properties are still becoming a challenge. Chitosan (CS) hydrogels are the promising implant materials due to an analogous character of the soft tissue; however, their low mechanical strength and durability together with its lack of integrity with surrounding tissues hinder the load-bearing application. This can be solved by developing a composite chitosan hydrogel reinforced with Hydroxyapatite Nanorods (HANr). The objective of this work is to develop and characterize (physically, chemically, mechanically and biologically) the composite hydrogels loaded with different concentration of hydroxyapatite nanorod. The concentration of hydroxyapatite in the composite hydrogel was optimized and it was found that, reinforcement modifies the hydrogel network by promoting the secondary crosslinking. The compression strength could reach 1.62 ± 0.02 MPa with a significant deformation of 32% and exhibits time-dependent, rapid self-recoverable and fatigue resistant behavior based on the cyclic loading-unloading compression test. The storage modulus value can reach nearly 10 kPa which is needed for the proposed application. Besides, composite hydrogels show an excellent antimicrobial activity against Escherichia coli, Staphylococcus aureus bacteria's and Candida albicans fungi and their cytocompatibility towards L929 mouse fibroblasts provide a potential pathway to developing a composite hydrogel for cartilage regeneration.
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Affiliation(s)
- B Y Santosh Kumar
- Polymer Composites Laboratory, Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, 575 025, India
| | - Arun M Isloor
- Membrane Technology Laboratory, Department of Chemistry, National Institute of Technology Karnataka, Surathkal, Mangalore, 575 025, India.
| | - G C Mohan Kumar
- Polymer Composites Laboratory, Department of Mechanical Engineering, National Institute of Technology Karnataka, Surathkal, Mangalore, 575 025, India.
| | - Inamuddin
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
- Centre of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia.
- Advanced Functional Materials Laboratory, Department of Applied Chemistry, Faculty of Engineering and Technology, Aligarh Muslim University, Aligarh, 202 002, India.
| | - Abdullah M Asiri
- Chemistry Department, Faculty of Science, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
- Centre of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, 21589, Saudi Arabia
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24
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Liu X, Chang M, He B, Meng L, Wang X, Sun R, Ren J, Kong F. A one-pot strategy for preparation of high-strength carboxymethyl xylan-g-poly(acrylic acid) hydrogels with shape memory property. J Colloid Interface Sci 2019; 538:507-518. [DOI: 10.1016/j.jcis.2018.12.023] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2018] [Revised: 12/04/2018] [Accepted: 12/05/2018] [Indexed: 01/09/2023]
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26
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Mohammadzadeh Pakdel P, Peighambardoust SJ. A review on acrylic based hydrogels and their applications in wastewater treatment. JOURNAL OF ENVIRONMENTAL MANAGEMENT 2018; 217:123-143. [PMID: 29602074 DOI: 10.1016/j.jenvman.2018.03.076] [Citation(s) in RCA: 86] [Impact Index Per Article: 14.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2017] [Revised: 02/26/2018] [Accepted: 03/17/2018] [Indexed: 06/08/2023]
Abstract
The acrylic based hydrogels have attracted the attention of many researchers in the field of pollutants adsorption such as dyes and metal cations due to their high swelling and adsorption capacities. This review introduces acrylic based hydrogels and focuses on their adsorption properties. We first described the methods for synthesizing hydrogels. Usual methods of characterization of acrylic based hydrogels such as swelling, adsorption capacity and desorption efficiency of the pollutants have been investigated. In addition, the adsorption isotherm and kinetic models which determine the mechanism of pollutants' adsorption by hydrogels have been introduced and relations that determine the values of thermodynamic parameters which define accomplishment of adsorption process have been investigated. In the following sections, a perfect insight has been provided on natural and synthetic acrylic based hydrogels. The effective parameters of swelling and adsorption by acrylic based hydrogels have been reviewed and the mechanism of pollutant's adsorption by acrylic based hydrogels has been discussed.
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Li X, Zhao Y, Li D, Zhang G, Gao X, Long S. Highly stretchable, tough, and self-recoverable and self-healable dual physically crosslinked hydrogels with synergistic “soft and hard” networks. POLYM ENG SCI 2018. [DOI: 10.1002/pen.24880] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xuefeng Li
- College of Materials and Chemical Engineering, Hubei Provincial Key Laboratory of Green Materials for Light Industry; Hubei University of Technology; Wuhan 430068 People's Republic of China
- College of Materials and Chemical Engineering, Collaborative Innovation Center of Green Light-weight Materials and Processing; Hubei University of Technology; Wuhan 430068 People's Republic of China
| | - Youjiao Zhao
- College of Materials and Chemical Engineering, Hubei Provincial Key Laboratory of Green Materials for Light Industry; Hubei University of Technology; Wuhan 430068 People's Republic of China
| | - Dapeng Li
- Bioengineering Department, College of Engineering; University of Massachusetts Dartmouth; North Dartmouth Massachusetts 02747-2300
| | - Gaowen Zhang
- College of Materials and Chemical Engineering, Hubei Provincial Key Laboratory of Green Materials for Light Industry; Hubei University of Technology; Wuhan 430068 People's Republic of China
| | - Xiang Gao
- College of Materials and Chemical Engineering, Hubei Provincial Key Laboratory of Green Materials for Light Industry; Hubei University of Technology; Wuhan 430068 People's Republic of China
| | - Shijun Long
- College of Materials and Chemical Engineering, Collaborative Innovation Center of Green Light-weight Materials and Processing; Hubei University of Technology; Wuhan 430068 People's Republic of China
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Hu Y, Li Y, Wang D, Zhou W, Dong X, Zhou S, Wang C, Yang Z. Highly flexible polymer-carbon dot-ferric ion nanocomposite hydrogels displaying super stretchability, ultrahigh toughness, good self-recovery and shape memory performance. Eur Polym J 2017. [DOI: 10.1016/j.eurpolymj.2017.08.044] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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29
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Pu W, Jiang F, Chen P, Wei B. A POSS based hydrogel with mechanical robustness, cohesiveness and a rapid self-healing ability by electrostatic interaction. SOFT MATTER 2017; 13:5645-5648. [PMID: 28828421 DOI: 10.1039/c7sm01492a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/07/2023]
Abstract
A molecularly dispersed nano-material called POSS-NH2-AA was synthesized to construct a hybrid hydrogel with a rapid self-healing ability (stress 8 kPa) and excellent mechanical performance (a strain of 4683% and a stress of 37.8 kPa). The hydrogel also exhibits good cohesiveness to materials, such as plastics, glass and iron. The backbone of the POSS makes the hydrogel much stronger than the hydrogel without POSS, which accounts for the improvement in its properties. This process is facile and useful to construct mechanically strong and self-healable materials.
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Affiliation(s)
- Wanfen Pu
- State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, Sichuan, China.
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