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Long S, Chen F, Ren H, Hu Y, Chen C, Huang Y, Li X. Ion-Cross-Linked Hybrid Photochromic Hydrogels with Enhanced Mechanical Properties and Shape Memory Behaviour. Polymers (Basel) 2024; 16:1031. [PMID: 38674950 PMCID: PMC11054056 DOI: 10.3390/polym16081031] [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: 02/25/2024] [Revised: 04/04/2024] [Accepted: 04/05/2024] [Indexed: 04/28/2024] Open
Abstract
Shape-shifting polymers usually require not only reversible stimuli-responsive ability, but also strong mechanical properties. A novel shape-shifting photochromic hydrogel system was designed and fabricated by embedding hydrophobic spiropyran (SP) into double polymeric network (DN) through micellar copolymerisation. Here, sodium alginate (Alg) and poly acrylate-co-methyl acrylate-co-spiropyran (P(SA-co-MA-co-SPMA)) were employed as the first network and the second network, respectively, to realise high mechanical strength. After being soaked in the CaCl2 solution, the carboxyl groups in the system underwent metal complexation with Ca2+ to enhance the hydrogel. Moreover, after the hydrogel was exposed to UV-light, the closed isomer of spiropyran in the hydrogel network could be converted into an open zwitterionic isomer merocyanine (MC), which was considered to interact with Ca2+ ions. Interestingly, Ca2+ and UV-light responsive programmable shape of the copolymer hydrogel could recover to its original form via immersion in pure water. Given its excellent metal ion and UV light stimuli-responsive and mechanical properties, the hydrogel has potential applications in the field of soft actuators.
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Affiliation(s)
- Shijun Long
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China; (S.L.); (F.C.); (H.R.); (Y.H.)
- Hubei Longzhong Laboratory, Xiangyang 441000, China
- New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, China
| | - Fan Chen
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China; (S.L.); (F.C.); (H.R.); (Y.H.)
| | - Han Ren
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China; (S.L.); (F.C.); (H.R.); (Y.H.)
| | - Yali Hu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China; (S.L.); (F.C.); (H.R.); (Y.H.)
| | - Chao Chen
- Hubei Key Laboratory of Polymer Materials, Hubei University, Wuhan 430062, China
| | - Yiwan Huang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China; (S.L.); (F.C.); (H.R.); (Y.H.)
- Hubei Longzhong Laboratory, Xiangyang 441000, China
| | - Xuefeng Li
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China; (S.L.); (F.C.); (H.R.); (Y.H.)
- Hubei Longzhong Laboratory, Xiangyang 441000, China
- New Materials and Green Manufacturing Talent Introduction and Innovation Demonstration Base, Hubei University of Technology, Wuhan 430068, China
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2
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Petelinšek N, Mommer S. Tough Hydrogels for Load-Bearing Applications. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2307404. [PMID: 38225751 DOI: 10.1002/advs.202307404] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Revised: 12/08/2023] [Indexed: 01/17/2024]
Abstract
Tough hydrogels have emerged as a promising class of materials to target load-bearing applications, where the material has to resist multiple cycles of extreme mechanical impact. A variety of chemical interactions and network architectures are used to enhance the mechanical properties and fracture mechanics of hydrogels making them stiffer and tougher. In recent years, the mechanical properties of tough, high-performance hydrogels have been benchmarked, however, this is often incomplete as important variables like water content are largely ignored. In this review, the aim is to clarify the reported mechanical properties of state-of-the-art tough hydrogels by providing a comprehensive library of fracture and mechanical property data. First, common methods for mechanical characterization of such high-performance hydrogels are introduced. Then, various modes of energy dissipation to obtain tough hydrogels are discussed and used to categorize the individual datasets helping to asses the material's (fracture) mechanical properties. Finally, current applications are considered, tough high-performance hydrogels are compared with existing materials, and promising future opportunities are discussed.
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Affiliation(s)
- Nika Petelinšek
- Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, Zurich, 8092, Switzerland
| | - Stefan Mommer
- Macromolecular Engineering Laboratory, Department of Mechanical and Process Engineering, ETH Zurich, Sonneggstrasse 3, Zurich, 8092, Switzerland
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3
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Varadarajan A, Badani Prado RM, Elmore K, Mishra S, Kundu S. Effects of concentration of hydrophobic component and swelling in saline solutions on mechanical properties of a stretchable hydrogel. SOFT MATTER 2024; 20:869-876. [PMID: 38170915 DOI: 10.1039/d3sm01215h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2024]
Abstract
An elastic biopolymer, resilin possesses exceptional qualities such as high stretchability and resilience. Such attributes are utilized in nature by many species for mechanical energy storage to facilitate movement. The properties of resilin are attributed to the balanced combination of hydrophilic and hydrophobic segments. To mimic the properties of resilin, we developed a hydrogel system composed of hydrophilic acrylic acid (AAc) and methacrylamide (MAM) chains and hydrophobic poly(propylene glycol diacrylate) (PPGDA) chains. The gel was produced through free-radical polymerization in 0.8 M NaCl solutions using KPS as an initiator. In these gels, AAc and MAM can form hydrogen bonds, whereas the association between PPGDA chains can lead to hydrophobic domains. The PPGDA concentration affects the level of hydrogen bonding and gel mechanical properties. Tensile experiments revealed that the elastic modulus increased with a higher PPGDA concentration. Retraction experiments demonstrated increased velocity and acceleration when released from a stretched state with increasing PPGDA concentration. Swelling and deswelling of gels in saline solutions led to a change in mechanical properties and retraction behavior. This study shows that the stretchability and resilience of these hydrogels can be adjusted by changing the concentration of hydrophobic components.
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Affiliation(s)
- Anandavalli Varadarajan
- Dave C Swalm School of Chemical Engineering, Mississippi State University, MS State, MS, 39762, USA.
| | - Rosa Maria Badani Prado
- Dave C Swalm School of Chemical Engineering, Mississippi State University, MS State, MS, 39762, USA.
| | - Katherine Elmore
- Dave C Swalm School of Chemical Engineering, Mississippi State University, MS State, MS, 39762, USA.
| | - Satish Mishra
- Dave C Swalm School of Chemical Engineering, Mississippi State University, MS State, MS, 39762, USA.
| | - Santanu Kundu
- Dave C Swalm School of Chemical Engineering, Mississippi State University, MS State, MS, 39762, USA.
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Jiang J, Xu S, Ma H, Li C, Huang Z. Photoresponsive hydrogel-based soft robot: A review. Mater Today Bio 2023; 20:100657. [PMID: 37229213 PMCID: PMC10205512 DOI: 10.1016/j.mtbio.2023.100657] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2023] [Revised: 04/13/2023] [Accepted: 05/03/2023] [Indexed: 05/27/2023] Open
Abstract
Soft robots have received a lot of attention because of their great human-robot interaction and environmental adaptability. Most soft robots are currently limited in their applications due to wired drives. Photoresponsive soft robotics is one of the most effective ways to promote wireless soft drives. Among the many soft robotics materials, photoresponsive hydrogels have received a lot of attention due to their good biocompatibility, ductility, and excellent photoresponse properties. This paper visualizes and analyzes the research hotspots in the field of hydrogels using the literature analysis tool Citespace, demonstrating that photoresponsive hydrogel technology is currently a key research direction. Therefore, this paper summarizes the current state of research on photoresponsive hydrogels in terms of photochemical and photothermal response mechanisms. The progress of the application of photoresponsive hydrogels in soft robots is highlighted based on bilayer, gradient, orientation, and patterned structures. Finally, the main factors influencing its application at this stage are discussed, including the development directions and insights. Advancement in photoresponsive hydrogel technology is crucial for its application in the field of soft robotics. The advantages and disadvantages of different preparation methods and structures should be considered in different application scenarios to select the best design scheme.
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Affiliation(s)
- Jingang Jiang
- Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, Heilongjiang, PR China
| | - Shuainan Xu
- Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, Heilongjiang, PR China
| | - Hongyuan Ma
- Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, Heilongjiang, PR China
- Harbin Branch of Taili Communication Technology Limited, China Electronics Technology Group Corporation, Harbin, 150080, Heilongjiang, PR China
| | - Changpeng Li
- Key Laboratory of Advanced Manufacturing and Intelligent Technology, Ministry of Education, Harbin University of Science and Technology, Harbin, 150080, Heilongjiang, PR China
| | - Zhiyuan Huang
- State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150001, Heilongjiang, PR China
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Wang Y, Zhu L, Kong X, Lu H, Wang C, Huang Y, Wu M. Fabrication of an ion-enhanced low-temperature tolerant graphene/PAA/KCl hydrogel and its application for skin sensors. NANOSCALE 2023; 15:5938-5947. [PMID: 36883225 DOI: 10.1039/d2nr04803e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Flexible sensors based on conductive hydrogels show great potential in wearable displays and smart devices. However, a water-based hydrogel inevitably freezes or loses its conductivity under extremely cold temperatures, leading to inadequate fulfillment of sensor performance. Herein, a well-designed strategy is proposed for fabricating a low-temperature-tolerant water-based hydrogel for sensor applications. By immersing a multi-crosslinking graphene(GO)/polyacrylic acid (PAA)-Fe3+ hydrogel into a KCl solution, an ion-enhanced conductive (GO/PAA/KCl) hydrogel is obtained with excellent conductivity (24.4 S m-1 at 20 °C; 16.2 S m-1 at -20 °C; 0.8 S m-1 at -80 °C) and outstanding antifreezing properties. The conductive hydrogel also possesses good mechanical properties with a fracture stress of 2.65 MPa and an elongation at break of 1511% and maintains its flexibility even at -35 °C. Then, a strain sensor is assembled to monitor the human motion at 20 °C and the movement of a wooden mannequin at -20 °C. Under both conditions, the sensor presents high sensitivity (GF = 8.66 at 20 °C, 7.93 at -20 °C) and good durability (300 cycles under 100% strain). Consequently, the anti-freezing ion-enhanced hydrogel will meet the needs of flexible sensors designed for intelligent robots, health monitoring, etc., which have to work in cold regions or extreme climates.
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Affiliation(s)
- Yaoyao Wang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China.
- Center of Materials Science and Optoelectronics Engineering, University of the Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing, 100049, China
| | - Longhang Zhu
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China.
- Center of Materials Science and Optoelectronics Engineering, University of the Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing, 100049, China
| | - XiangYu Kong
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China.
| | - Haimei Lu
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China.
- Center of Materials Science and Optoelectronics Engineering, University of the Chinese Academy of Sciences, 19 A Yuquan Rd, Shijingshan District, Beijing, 100049, China
| | - Chao Wang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China.
| | - Yong Huang
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China.
| | - Min Wu
- Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, 29 Zhongguancun East Road, Haidian District, Beijing 100190, China.
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6
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Lu Y, Zhu X, Hu C, Li P, Zhao M, Lu J, Xia G. A fucoidan-gelatin wound dressing accelerates wound healing by enhancing antibacterial and anti-inflammatory activities. Int J Biol Macromol 2022; 223:36-48. [PMID: 36336154 DOI: 10.1016/j.ijbiomac.2022.10.255] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2022] [Revised: 10/26/2022] [Accepted: 10/27/2022] [Indexed: 11/06/2022]
Abstract
Microbial infections and the slow regression of inflammation are major impediments to wound healing. Herein, a tilapia fish skin gelatin-fucose gum-tannic acid (Gel&Fuc-TA) hydrogel wound dressing (Gel&Fuc-TA) was designed to promote wound healing by mixing and reacting tannic acid (TA) with tilapia fish skin gelatin (Gel) and fucoidan (Fuc). Gel&Fuc-TA hydrogel has a good network structure as well as swelling and release properties, and shows excellent antibacterial, antioxidant, cell compatibility, and hemostatic properties. Gel&Fuc-TA hydrogel can promote the expression of vascular endothelial growth factor (VEGF), platelet endothelial cell adhesion molecule-1 (CD-31), and alpha-smooth muscle actin (α-SMA), enhance collagen deposition, and accelerate wound repair. Gel&Fuc-TA hydrogel can change the wound microbiome, reduce wound microbiome colonization, and decrease the expression of microbiome-related proinflammatory factors, such as lipopolysaccharide (LPS), Toll-like receptor 2 (TLR2), and Toll-like receptor 4 (TLR4). Gel&Fuc-TA hydrogel effectively regulates the conversion of wound macrophages to the M2 (anti-inflammatory phenotype) phenotype, decreases the expression of interleukin-6 (IL-6), interleukin-1β (IL-1β) and tumor necrosis factor-alpha (TNF-α), and increases the expression of arginase-1 (Arg-1), interleukin-10 (IL-10) and transforming growth factor-beta (TGF-β), thereby reducing the inflammatory response. In summary, Gel&Fuc-TA hydrogel prepared using a rational green cross-linking reaction can effectively accelerate wound healing.
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Affiliation(s)
- Yapeng Lu
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Key Laboratory of Seafood Processing of Haikou, College of Food Science and Engineering, Hainan University, Hainan 570228, China
| | - Xiaopeng Zhu
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Key Laboratory of Seafood Processing of Haikou, College of Food Science and Engineering, Hainan University, Hainan 570228, China
| | - Chao Hu
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Key Laboratory of Seafood Processing of Haikou, College of Food Science and Engineering, Hainan University, Hainan 570228, China
| | - Peng Li
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Key Laboratory of Seafood Processing of Haikou, College of Food Science and Engineering, Hainan University, Hainan 570228, China
| | - Meihui Zhao
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Key Laboratory of Seafood Processing of Haikou, College of Food Science and Engineering, Hainan University, Hainan 570228, China
| | - Jinfeng Lu
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Key Laboratory of Seafood Processing of Haikou, College of Food Science and Engineering, Hainan University, Hainan 570228, China
| | - Guanghua Xia
- Hainan Engineering Research Center of Aquatic Resources Efficient Utilization in South China Sea, Key Laboratory of Food Nutrition and Functional Food of Hainan Province, Key Laboratory of Seafood Processing of Haikou, College of Food Science and Engineering, Hainan University, Hainan 570228, China; Collaborative Innovation Center of Provincial and Ministerial Co-Construction for Marine Food Deep Processing, Dalian Polytechnic University, Dalian 116034, China.
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7
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Chen C, Zheng N, Wu W, Tang M, Feng W, Zhang W, Li X, Jiang Y, Pang J, Min D, Fu L. Self-Adhesive and Conductive Dual-Network Polyacrylamide Hydrogels Reinforced by Aminated Lignin, Dopamine, and Biomass Carbon Aerogel for Ultrasensitive Pressure Sensor. ACS APPLIED MATERIALS & INTERFACES 2022; 14:54127-54140. [PMID: 36413754 DOI: 10.1021/acsami.2c12914] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Conductive hydrogels have attracted extensive interest owing to its potential in soft robotics, electronic skin, and human monitoring. However, insufficient mechanical properties, lower adhesivity, and unsatisfactory conductivity seriously hinder potential applications in this emerging field. Herein, a highly elastic conductive hydrogel with a combination of favorable mechanical properties, self-adhesiveness, and excellent electrical performance was achieved by the synergistic effect of aminated lignin (AL), polydopamine (PDA), polyacrylamide (PAM) chains, and biomass carbon aerogel (C-SPF). In detail, AL was applied to induce slow oxidative polymerization of DA for preparing the sticky hydrogel containing PDA. Then, C-SPF carbon aerogel was used as a matrix to construct a dual-network structured composite hydrogel by combining with the hydrogels derived from PDA, AL, and PAM. The as-prepared conductive hydrogel displayed excellent mechanical performance, strong adhesive strength, and repeatable adhesivity. The prepared hydrogel-based pressure sensor possessed fast response (0.6 s loading and 0.8 s unloading stress time), high response (maximum RCR = 1.8 × 104), wide working pressure range (from 0 to 240.0 kPa), and excellent durability (stable 500 compression cycles with 30% deformation). In addition, the prepared sensor also displayed ultrahigh sensitivity (170 kPa-1), which was near 4 orders of magnitude higher than the conventional lignin-modified PAM hydrogels. The multiple interactions between hydrogel components and the mechanical properties of hydrogel were also verified by molecular dynamics investigation. Moreover, the excellent cytocompatibility and antibacterial activity of this composite hydrogel ensured high potential in various applications such as human/machine interaction, artificial intelligence, personal healthcare, and wearable devices.
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Affiliation(s)
- Changzhou Chen
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Na Zheng
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Weixin Wu
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Mengqi Tang
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Wenyao Feng
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Wei Zhang
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Xiangyu Li
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Yan Jiang
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Jinhui Pang
- State Key Laboratory Base of Eco-chemical Engineering, Qingdao University of Science & Technology, Qingdao266042, China
| | - Douyong Min
- College of Light Industry and Food Engineering, Guangxi University, Guangxi Key Laboratory of Clean Pulp & Papermaking and Pollution Control, Nanning530004, China
| | - Lianhua Fu
- Guangdong Key Laboratory for Biomedical Measurements and Ultrasound Imaging, School of Biomedical Engineering, Health Science Center, Shenzhen University, Shenzhen518060, China
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8
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Lenoch A, Schönhoff M, Cramer C. Modelling viscoelastic relaxation mechanisms in thermorheologically complex Fe(III)-poly(acrylic acid) hydrogels. SOFT MATTER 2022; 18:8467-8475. [PMID: 36317679 DOI: 10.1039/d2sm01122k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/16/2023]
Abstract
Mechanical properties of hydrogels with reversible transition metal-polymer crosslinks can be flexibly tuned depending on the dissociation kinetics of the metal bond. We use rheology to investigate the sol-gel transition of a Fe(III)-poly(acrylic acid) network with varying crosslinker content and model the corresponding mechanical relaxation at different stages of gelation. The system transitions from an unentangled chain regime to a crosslink dissociation dominated regime, where the relaxation is governed by two timescales with different activation energies. To account for the interplay of chain and crosslinker dynamics, a time-temperature-superposition procedure is introduced for both processes separately, thus separating the dynamic processes in these thermorheologically complex dynamic networks. The activation energy of chain relaxation remains unchanged whether or not the chain participates in the network. To model contributions to the dynamic modulus of each process, we combine concepts from fractional viscoelasticity with a generalized Maxwell model, which describes the dynamics of an unentangled chain solution with reversible crosslinks. This allows us to quantify the evolution of viscoelastic parameters in the course of gelation, where we find that the terminal relaxation time of the gels increases less than expected at high crosslinker contents. This result is attributed to a facilitated crosslink exchange mechanism and a lower pH of the gel matrix.
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Affiliation(s)
- Arthur Lenoch
- Center for Soft Nanoscience, University of Muenster, Busso-Peus-Str.10, 48149 Münster, Germany
- Institut für Physikalische Chemie, University of Muenster, Corrensstraße 28/30, 48149 Münster, Germany.
| | - Monika Schönhoff
- Center for Soft Nanoscience, University of Muenster, Busso-Peus-Str.10, 48149 Münster, Germany
- Institut für Physikalische Chemie, University of Muenster, Corrensstraße 28/30, 48149 Münster, Germany.
| | - Cornelia Cramer
- Center for Soft Nanoscience, University of Muenster, Busso-Peus-Str.10, 48149 Münster, Germany
- Institut für Physikalische Chemie, University of Muenster, Corrensstraße 28/30, 48149 Münster, Germany.
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9
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Dalei G, Das S. Polyacrylic acid-based drug delivery systems: A comprehensive review on the state-of-art. J Drug Deliv Sci Technol 2022. [DOI: 10.1016/j.jddst.2022.103988] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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10
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Li Y, Zhou X, Sarkar B, Gagnon-Lafrenais N, Cicoira F. Recent Progress on Self-Healable Conducting Polymers. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2022; 34:e2108932. [PMID: 35043469 DOI: 10.1002/adma.202108932] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 01/07/2022] [Indexed: 06/14/2023]
Abstract
Materials able to regenerate after damage have been the object of investigation since the ancient times. For instance, self-healing concretes, able to resist earthquakes, aging, weather, and seawater have been known since the times of ancient Rome and are still the object of research. During the last decade, there has been an increasing interest in self-healing electronic materials, for applications in electronic skin (E-skin) for health monitoring, wearable and stretchable sensors, actuators, transistors, energy harvesting, and storage devices. Self-healing materials based on conducting polymers are particularly attractive due to their tunable high conductivity, good stability, intrinsic flexibility, excellent processability and biocompatibility. Here recent developments are reviewed in the field of self-healing electronic materials based on conducting polymers, such as poly 3,4-ethylenedioxythiophene (PEDOT), polypyrrole (PPy), and polyaniline (PANI). The different types of healing, the strategies adopted to optimize electrical and mechanical properties, and the various possible healing mechanisms are introduced. Finally, the main challenges and perspectives in the field are discussed.
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Affiliation(s)
- Yang Li
- Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec, H3C 3A7, Canada
| | - Xin Zhou
- Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec, H3C 3A7, Canada
| | - Biporjoy Sarkar
- Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec, H3C 3A7, Canada
| | - Noémy Gagnon-Lafrenais
- Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec, H3C 3A7, Canada
| | - Fabio Cicoira
- Department of Chemical Engineering, Polytechnique Montreal, Montreal, Quebec, H3C 3A7, Canada
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Liu Y, Liu Y, Yang Z, Chen X, Zhao Y. Preparation of MPASP‐PAA/Fe
3+
Composite Conductive Hydrogel with Physical and Chemical Double Crosslinking Structure and Its Application in Flexible Strain Sensors. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202100467] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yun Liu
- College of Chemistry and Chemical Engineering Taiyuan University of Technology Taiyuan Shanxi 030024 China
- Institute of Fine Chemical Engineering Taiyuan University of Technology Taiyuan 030024 China
| | - Yongmei Liu
- College of Chemistry and Chemical Engineering Taiyuan University of Technology Taiyuan Shanxi 030024 China
| | - Zhiyun Yang
- College of Chemistry and Chemical Engineering Taiyuan University of Technology Taiyuan Shanxi 030024 China
| | - Xiaoling Chen
- College of Chemistry and Chemical Engineering Taiyuan University of Technology Taiyuan Shanxi 030024 China
| | - Yansheng Zhao
- College of Chemistry and Chemical Engineering Taiyuan University of Technology Taiyuan Shanxi 030024 China
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12
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Abou-Elanwar AM, Shirke YM, Cho SJ, Jin Kwon S, Choi WK, Uk Hong S, Keun Lee H, Jeon JD. Ultrathin double network-coated hollow fiber membrane designed for water vapor separation. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.120586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Ahmad Z, Salman S, Khan SA, Amin A, Rahman ZU, Al-Ghamdi YO, Akhtar K, Bakhsh EM, Khan SB. Versatility of Hydrogels: From Synthetic Strategies, Classification, and Properties to Biomedical Applications. Gels 2022; 8:gels8030167. [PMID: 35323280 PMCID: PMC8950628 DOI: 10.3390/gels8030167] [Citation(s) in RCA: 59] [Impact Index Per Article: 29.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2022] [Revised: 02/08/2022] [Accepted: 02/24/2022] [Indexed: 12/15/2022] Open
Abstract
Hydrogels are three-dimensional, cross-linked, and supramolecular networks that can absorb significant volumes of water. Hydrogels are one of the most promising biomaterials in the biological and biomedical fields, thanks to their hydrophilic properties, biocompatibility, and wide therapeutic potential. Owing to their nontoxic nature and safe use, they are widely accepted for various biomedical applications such as wound dressing, controlled drug delivery, bone regeneration, tissue engineering, biosensors, and artificial contact lenses. Herein, this review comprises different synthetic strategies for hydrogels and their chemical/physical characteristics, and various analytical, optical, and spectroscopic tools for their characterization are discussed. A range of synthetic approaches is also covered for the synthesis and design of hydrogels. It will also cover biomedical applications such as bone regeneration, tissue engineering, and drug delivery. This review addressed the fundamental, general, and applied features of hydrogels in order to facilitate undergraduates, graduates, biomedical students, and researchers in a variety of domains.
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Affiliation(s)
- Zubair Ahmad
- Department of Chemistry, University of Swabi, Swabi 23561, Pakistan; (Z.A.); (A.A.); (Z.U.R.)
| | - Saad Salman
- Faculty of Pharmacy, Capital University of Science and Technology, Islamabad 44000, Pakistan;
| | - Shahid Ali Khan
- Department of Chemistry, School of Natural Sciences, National University of Science and Technology (NUST), Islamabad 44000, Pakistan
- Correspondence: (S.A.K.); (S.B.K.)
| | - Abdul Amin
- Department of Chemistry, University of Swabi, Swabi 23561, Pakistan; (Z.A.); (A.A.); (Z.U.R.)
| | - Zia Ur Rahman
- Department of Chemistry, University of Swabi, Swabi 23561, Pakistan; (Z.A.); (A.A.); (Z.U.R.)
| | - Youssef O. Al-Ghamdi
- Department of Chemistry, College of Science Al-Zulfi, Majmaah University, Al-Majmaah 11952, Saudi Arabia;
| | - Kalsoom Akhtar
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (K.A.); (E.M.B.)
| | - Esraa M. Bakhsh
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (K.A.); (E.M.B.)
| | - Sher Bahadar Khan
- Department of Chemistry, Faculty of Science, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (K.A.); (E.M.B.)
- Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Correspondence: (S.A.K.); (S.B.K.)
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Shahriari MH, Hadjizadeh A, Abdouss M. Advances in self-healing hydrogels to repair tissue defects. Polym Bull (Berl) 2022. [DOI: 10.1007/s00289-022-04133-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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15
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Lin CY, Battistoni CM, Liu JC. Redox-Responsive Hydrogels with Decoupled Initial Stiffness and Degradation. Biomacromolecules 2021; 22:5270-5280. [PMID: 34793135 DOI: 10.1021/acs.biomac.1c01180] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Disulfide-cross-linked hydrogels have been widely used for biological applications because of their degradability in response to redox stimuli. However, degradability often depends on polymer concentration, which also influences the hydrogel mechanical properties such as the initial stiffness. Here, we describe a one-pot cross-linking approach utilizing both a thiol-ene reaction through a Michael pathway with divinyl sulfone (DVS) to form non-reducible thioether bonds and thiol oxidation promoted by ferric ethylenediaminetetraacetic acid (Fe-EDTA) to form reducible disulfide bonds. The ratio between these two bonds was modulated by varying the DVS concentration used, and the initial shear or elastic modulus and degradation rate of the hydrogels were decoupled. These gels had tunable release rates of encapsulated dextran when exposed to 10 μM glutathione. Fibroblast encapsulation results suggested good cytocompatibility of the cross-linking reactions. This work shows the potential of combining DVS and Fe-EDTA to create thiol-cross-linked hydrogels as redox-responsive drug delivery vehicles and tissue engineering scaffolds with variable degradability.
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Affiliation(s)
- Charng-Yu Lin
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Carly M Battistoni
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
| | - Julie C Liu
- Davidson School of Chemical Engineering, Purdue University, West Lafayette, Indiana 47907, United States.,Weldon School of Biomedical Engineering, Purdue University, West Lafayette, Indiana 47907, United States
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16
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Toughening of Bioceramic Composites for Bone Regeneration. JOURNAL OF COMPOSITES SCIENCE 2021. [DOI: 10.3390/jcs5100259] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Bioceramics are widely considered as elective materials for the regeneration of bone tissue, due to their compositional mimicry with bone inorganic components. However, they are intrinsically brittle, which limits their capability to sustain multiple biomechanical loads, especially in the case of load-bearing bone districts. In the last decades, intense research has been dedicated to combining processes to enhance both the strength and toughness of bioceramics, leading to bioceramic composite scaffolds. This review summarizes the recent approaches to this purpose, particularly those addressed to limiting the propagation of cracks to prevent the sudden mechanical failure of bioceramic composites.
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17
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Jiao Y, Lu Y, Lu K, Yue Y, Xu X, Xiao H, Li J, Han J. Highly stretchable and self-healing cellulose nanofiber-mediated conductive hydrogel towards strain sensing application. J Colloid Interface Sci 2021; 597:171-181. [PMID: 33866209 DOI: 10.1016/j.jcis.2021.04.001] [Citation(s) in RCA: 45] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2021] [Revised: 03/08/2021] [Accepted: 04/01/2021] [Indexed: 12/12/2022]
Abstract
HYPOTHESIS Hydrogel-based sensors have attracted considerable attention due to potential opportunities in human health monitoring when both mechanical flexibility and sensing ability are required. Therefore, the integration of excellent mechanical properties, electrical conductivity and self-healing properties into hydrogels may improve the application range and durability of hydrogel-based sensors. EXPERIMENTS A novel composite hydrogel composed of polyaniline (PANI), polyacrylic acid (PAA) and 2,2,6,6-tetramethylpiperidin-1-yl)oxyl (TEMPO)-oxidized cellulose nanofibrils (TOCNFs) was designed. The viscoelastic, mechanical, conductive, self-healing and sensing properties of hydrogels were studied. FINDINGS The TOCNF/PANI/PAA hydrogel exhibits a fracture strain of 982%, tensile strength of 74.98 kPa and electrical conductivity of 3.95 S m-1, as well as good mechanical and electrical self-healing properties within 6 h at ambient temperature without applying any stimuli. Furthermore, owing to the high sensitivity of the TOCNF/PANI/PAA-0.6 hydrogel-based strain sensor (gauge factor, GF = 8.0), the sensor can accurately and rapidly detect large-scale motion and subtle localized activity. The proposed composite hydrogel is as a promising material for use as soft wearable sensors for health monitoring and smart robotics applications.
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Affiliation(s)
- Yue Jiao
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Ya Lu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China
| | - Kaiyue Lu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yiying Yue
- Biology and Environment College, Nanjing Forestry University, Nanjing 210037, China
| | - Xinwu Xu
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Huining Xiao
- Chemical Engineering Department, New Brunswick University, Fredericton, New Brunswick E3B 5A3, Canada
| | - Jian Li
- Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China
| | - Jingquan Han
- College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China; Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, Nanjing Forestry University, Nanjing 210037, China.
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18
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Jiang F, Chi Z, Ding Y, Quan M, Tian Y, Shi J, Song F, Liu C. Wound Dressing Hydrogel of Enteromorpha prolifera Polysaccharide-Polyacrylamide Composite: A Facile Transformation of Marine Blooming into Biomedical Material. ACS APPLIED MATERIALS & INTERFACES 2021; 13:14530-14542. [PMID: 33729756 DOI: 10.1021/acsami.0c21543] [Citation(s) in RCA: 37] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Great endeavors have been dedicated to the development of wound dressing materials. However, there is still a demand for developing a wound dressing hydrogel that integrates natural macromolecules without requiring extra chemical modifications, so as to enable a facile transformation and practical application in wound healing. Herein, a composite hydrogel was prepared with water-soluble polysaccharides from Enteromorpha prolifera (PEP) cross-linked with boric acid and polyacrylamide cross-linked via polymerization (PAM) using a one-pot method. The dual-network of this hydrogel enabled it to have an ultratough mechanical strength. Moreover, interfacial characterizations reflected that the hydrogen bonds and dynamic hydroxyl-borate bonds contributed to the self-healing ability of the PEP-PAM hydrogel, and the surface groups on the hydrogel allowed for tissue adhesiveness and natural antioxidant properties. Additionally, human epidermal growth factor-loaded PEP-PAM hydrogel promoted cell proliferation and migration in vitro and significantly accelerated wound healing in vivo on model rats. These progresses suggested a prospect for the PEP-PAM hydrogel as an effective and easily available wound dressing material. Remarkably, this work showcases that a wound dressing hydrogel can be facially developed by using natural polysaccharides as a one component and offers a new route for the high-value utilization of disastrous marine blooming biomass by transforming it into a biomedical material.
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Affiliation(s)
- Fei Jiang
- College of Marine Life Sciences, Ocean University of China, No.5 Yushan Road, Qingdao 266003, China
| | - Zhe Chi
- College of Marine Life Sciences, Ocean University of China, No.5 Yushan Road, Qingdao 266003, China
| | - Yuanyuan Ding
- College of Marine Life Sciences, Ocean University of China, No.5 Yushan Road, Qingdao 266003, China
| | - Meilin Quan
- College of Marine Life Sciences, Ocean University of China, No.5 Yushan Road, Qingdao 266003, China
| | - Yu Tian
- College of Marine Life Sciences, Ocean University of China, No.5 Yushan Road, Qingdao 266003, China
| | - Jie Shi
- Qingdao Biotemed Biomaterials Co. Ltd. No. 168 Zhuzhou Road, Qingdao 266101, China
| | - Fulai Song
- Qingdao Biotemed Biomaterials Co. Ltd. No. 168 Zhuzhou Road, Qingdao 266101, China
| | - Chenguang Liu
- College of Marine Life Sciences, Ocean University of China, No.5 Yushan Road, Qingdao 266003, China
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19
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Comparative gelation of acrylic acid and acrylamide in diacrylate and dimethacrylate crosslinked matrices. Polym Bull (Berl) 2021. [DOI: 10.1007/s00289-020-03147-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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20
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21
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Zhao R, Wang Y, Wang S, Zhao C, Gong X. The dissociation of physical interaction clusters under tensile deformation of hybrid double network gels. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122995] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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22
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23
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Kim ES, Song DB, Choi KH, Lee JH, Suh DH, Choi WJ. Robust and recoverable dual cross‐linking networks in pressure‐sensitive adhesives. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200628] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Eun Seon Kim
- Chemical Materials Solutions Center Korea Research Institute of Chemical Technology (KRICT) Daejeon South Korea
- Department of Chemical engineering Hanyang University Seoul South Korea
| | - Da Bin Song
- Department of Chemical engineering Hanyang University Seoul South Korea
| | - Kyoung Hwan Choi
- Department of Chemical engineering Hanyang University Seoul South Korea
| | - Jae Heung Lee
- Chemical Materials Solutions Center Korea Research Institute of Chemical Technology (KRICT) Daejeon South Korea
| | - Dong Hack Suh
- Department of Chemical engineering Hanyang University Seoul South Korea
| | - Woo Jin Choi
- Chemical Materials Solutions Center Korea Research Institute of Chemical Technology (KRICT) Daejeon South Korea
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Jin X, Jiang H, Zhang Z, Yao Y, Bao X, Hu Q. Ultrastretchable, self-adhesive, strain-sensitive and self-healing GO@DA/Alginate/P(AAc-co-AAm) multifunctional hydrogels via mussel-inspired chemistry. Carbohydr Polym 2020; 254:117316. [PMID: 33357879 DOI: 10.1016/j.carbpol.2020.117316] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Revised: 10/11/2020] [Accepted: 10/22/2020] [Indexed: 12/20/2022]
Abstract
For conductive hydrogels applied in biosensors, wearable devices and so forth, multifunctionality is an inevitable trend of development to meet various practical requirements and enhance human experience. Herein, inspired by nanocomposite, double-network (DN) and mussel chemistry, a new Graphene oxide@Dopamine/Alginate/Poly(acrylic acid-co-acrylamide) [GO@DA/Alginate/P(AAc-co-AAm)] hydrogel was fabricated through one-pot in-situ radical copolymerization. GO@DA nanofillers, prepared via GO confined DA polymerization, imparted the hydrogel with remarkable adhesiveness. Alginate/P(AAc-co-AAm) DN matrix, physically and chemically crosslinked by Fe3+ and N,N'-Methylenebisacrylamide, made hydrogels ultrastretchable, self-healing and biocompatible. With contents of DA and alginate accurately regulated, the tensile strength, elongation, adhesion strength and conductivity of the optimal hydrogel could reach 320.2 kPa, 1198 %, 36.9 kPa and 3.24 ± 0.12 S/m, respectively. What's more notable was that the synergistic integration of repeatable adhesiveness, strain sensitivity, use stability, self-healing ability and biocompatibility provided such hydrogels with tremendous possibility of practical application for strain sensors.
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Affiliation(s)
- Xiaoqiang Jin
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Institute of Biomedical Macromolecules, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Huihong Jiang
- MOE Key Laboratory of Macromolecule Synthesis and Functionalization, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Zhiming Zhang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Institute of Biomedical Macromolecules, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Yuejun Yao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Institute of Biomedical Macromolecules, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Xiaojiong Bao
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Institute of Biomedical Macromolecules, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China
| | - Qiaoling Hu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Institute of Biomedical Macromolecules, Department of Polymer Science and Engineering, Zhejiang University, Hangzhou 310027, China.
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25
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Aihua Shi, Dai X, Jing Z. Tough and Self-Healing Chitosan/Poly(acrylamide-co-acrylic acid) Double Network Hydrogels. POLYMER SCIENCE SERIES A 2020. [DOI: 10.1134/s0965545x20030128] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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26
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Chen X, He M, Zhang X, Lu T, Hao W, Zhao Y, Liu Y. Metal‐Free and Stretchable Conductive Hydrogels for High Transparent Conductive Film and Flexible Strain Sensor with High Sensitivity. MACROMOL CHEM PHYS 2020. [DOI: 10.1002/macp.202000054] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xiaoling Chen
- College of Chemistry and Chemical EngineeringTaiyuan University of Technology Taiyuan 030024 China
| | - Miaomiao He
- College of Chemistry and Chemical EngineeringTaiyuan University of Technology Taiyuan 030024 China
| | - Xuhua Zhang
- College of Chemistry and Chemical EngineeringTaiyuan University of Technology Taiyuan 030024 China
| | - Tiao Lu
- College of Chemistry and Chemical EngineeringTaiyuan University of Technology Taiyuan 030024 China
| | - Weizhen Hao
- College of Chemistry and Chemical EngineeringTaiyuan University of Technology Taiyuan 030024 China
| | - Yansheng Zhao
- College of Chemistry and Chemical EngineeringTaiyuan University of Technology Taiyuan 030024 China
| | - Yongmei Liu
- College of Chemistry and Chemical EngineeringTaiyuan University of Technology Taiyuan 030024 China
- Institute of Fine Chemical EngineeringTaiyuan University of Technology Taiyuan 030024 China
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Bai C, Huang Q, Xiong X. Reinforcement of
Self‐Healing
Polyacrylic Acid Hydrogel with Acrylamide Modified Microcrystalline Cellulose
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900458] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Changzhuang Bai
- Department of Materials Science and Engineering, College of MaterialsXiamen University Xiamen Fujian 361005 China
| | - Qiuhua Huang
- Department of Materials Science and Engineering, College of MaterialsXiamen University Xiamen Fujian 361005 China
| | - Xiaopeng Xiong
- Department of Materials Science and Engineering, College of MaterialsXiamen University Xiamen Fujian 361005 China
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28
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Xu X, Jerca VV, Hoogenboom R. Self‐Healing Metallo‐Supramolecular Hydrogel Based on Specific Ni
2+
Coordination Interactions of Poly(ethylene glycol) with Bistriazole Pyridine Ligands in the Main Chain. Macromol Rapid Commun 2020; 41:e1900457. [DOI: 10.1002/marc.201900457] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/30/2019] [Revised: 11/08/2019] [Indexed: 12/19/2022]
Affiliation(s)
- Xiaowen Xu
- Supramolecular Chemistry GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent University Krijgslaan 281‐S4 B‐9000 Ghent Belgium
| | - Valentin Victor Jerca
- Supramolecular Chemistry GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent University Krijgslaan 281‐S4 B‐9000 Ghent Belgium
- Centre of Organic Chemistry “Costin D. Nenitzescu” Romanian Academy Spl. Independentei 202B 060023 Bucharest Romania
| | - Richard Hoogenboom
- Supramolecular Chemistry GroupCentre of Macromolecular Chemistry (CMaC)Department of Organic and Macromolecular ChemistryGhent University Krijgslaan 281‐S4 B‐9000 Ghent Belgium
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29
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Zhang B, Wang C, Wang Y, Li T, Zhai K, Zhang F, Bai Y, Tan Y, Ma Y, Xu K, Wang P. A facile method to synthesize strong salt-enhanced hydrogels based on reversible physical interaction. SOFT MATTER 2020; 16:738-746. [PMID: 31825059 DOI: 10.1039/c9sm01912j] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
To overcome the adverse effects of salt on the mechanical properties of hydrogels, a facile double cross-linking method has been proposed to synthesize salt-enhanced tough hydrogels. Herein, a poly(hexafluorobutyl methacrylate-acrylamide) hydrogel [P(AAm-co-HFBMA) hydrogel] is prepared by the copolymerization of acrylamide (AAm) and hexafluorobutyl methacrylate (HFBMA) with N,N'-methylene bisacrylamide (NMBA) as a cross-linking agent in a dimethylformamide (DMF)/aqueous solution; DMF is then replaced by water. The results indicate that the tensile fracture stress of the P(AAm-co-HFBMA) hydrogel (20 mol% HFBMA) is as high as 0.43 MPa, which is far better than that of the PAAm hydrogel (ca. 30 kPa). Additionally, with a further increase in the hydrophobic structural units (25 mol% HFBMA), the tensile fracture stress of the P(AAm-co-HFBMA) hydrogel can be increased up to 2.34 MPa. The mechanical strength of the P(AAm-co-HFBMA) hydrogel is significantly enhanced to 3.50 MPa (2 M) from 2.34 MPa (0 M) after it is soaked in aqueous NaCl solutions with various salt concentrations. The mechanical properties and the results of the DSC analysis indicate that the main reason for its mechanical strength to exhibit a unique salt-enhancement trend can be explained as follows. After the P(AAm-co-HFBMA) hydrogel is soaked in the salt solution, the network gradually collapses with the penetration of the small molecules of salt. Thus, the hydrophobic C-F units easily form dynamic cross-linking junctions due to the switchable hydrophobic interaction between C-F groups, which can endow the P(AAm-co-HFBMA) hydrogel with a more effective dynamic energy dissipation mechanism in salt solution.
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Affiliation(s)
- Baichao Zhang
- Changchun University of Science and Technology, Changchun 130028, China.
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30
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Liu T, Zou S, Hang C, Li J, Di X, Li X, Wu Q, Wang F, Sun P. Mechanically strong and tough hydrogels with pH-triggered self-healing and shape memory properties based on a dual physically crosslinked network. Polym Chem 2020. [DOI: 10.1039/c9py01862j] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A kind of dual physically crosslinked hydrogel with pH-triggered self-healing and shape memory properties is reported.
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Affiliation(s)
- Tao Liu
- Key Laboratory of Functional Polymer Materials of Ministry of Education and College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Shaoshuang Zou
- College of Chemistry and Chemical Engineering
- Qilu Normal University
- Jinan
- P. R. China
| | - Chen Hang
- Key Laboratory of Functional Polymer Materials of Ministry of Education and College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Jian Li
- Key Laboratory of Functional Polymer Materials of Ministry of Education and College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Xiang Di
- Key Laboratory of Functional Polymer Materials of Ministry of Education and College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Xiaohui Li
- School of Materials Science and Engineering
- and Tianjin Key Laboratory of Composite and Functional Materials
- Tianjin University
- Tianjin 300072
- China
| | - Qiang Wu
- Key Laboratory of Functional Polymer Materials of Ministry of Education and College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Fenfen Wang
- Key Laboratory of Functional Polymer Materials of Ministry of Education and College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
| | - Pingchuan Sun
- Key Laboratory of Functional Polymer Materials of Ministry of Education and College of Chemistry
- Nankai University
- Tianjin 300071
- P. R. China
- State Key Laboratory of Medicinal Chemical Biology
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31
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Zhou X, Li C, Zhu L, Zhou X. Engineering hydrogels by soaking: from mechanical strengthening to environmental adaptation. Chem Commun (Camb) 2020; 56:13731-13747. [DOI: 10.1039/d0cc05130f] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The soaking strategy could not only strengthen hydrogels with superior mechanical properties but also provide the hydrogels with environmentally adapting properties.
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Affiliation(s)
- Xiaohu Zhou
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
| | - Chun Li
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
| | - Lifei Zhu
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
| | - Xuechang Zhou
- College of Chemistry and Environmental Engineering
- Shenzhen University
- Shenzhen 518060
- P. R. China
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Zhang M, Wiener CG, Sepulveda-Medina PI, Douglas JF, Vogt BD. Influence of Sodium Salts on the Swelling and Rheology of Hydrophobically Cross-linked Hydrogels Determined by QCM-D. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2019; 35:16612-16623. [PMID: 31747520 DOI: 10.1021/acs.langmuir.9b03063] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Hydrophobically modified copolymers provide a versatile platform of hydrogel materials for diverse applications, but the influence of salts on the swelling and material properties of this class of hydrogels has not been extensively studied. Here, we investigate model hydrogels with three different sodium salts with anions chosen from the classic Hofmeister series to determine how these counterions influence the swelling and mechanical properties of neutral hydrogels. The gel chosen was based on a statistical copolymer of dimethylacrylamide and 2-(N-ethylperfluorooctane sulfonamido) ethyl acrylate (FOSA). Our measurements utilize a quartz crystal microbalance with dissipation (QCM-D) to quantify both swelling and rheological properties of these gels. We find that a 1 mol/L solution of Na2SO4, corresponding to a kosmotropic anion, leads to nearly a 2.6-fold gel deswelling and correspondingly, the complex modulus increases by an order of magnitude under these solution conditions. In contrast, an initial increase in swelling and then a swelling maximum is observed for a 0.02 mol/L concentration in the case of a chaotropic anion, NaClO4, but the changes in the degree of gel swelling in this system are not directly correlated with changes in the gel shear modulus. The addition of NaBr, an anion salt closer to the middle of the chaotropic to kosmotropic range, leads to hydrogel deswelling where the degree of deswelling and the shear modulus are both nearly independent of salt concentration. Overall, the observed trends are broadly consistent with more kosmotropic ions causing diminished solubility ("salting out") and strongly chaotropic ions causing improved solubility ("salting in"), a trend characteristic of the Hoffmeister series governing the solubility of many proteins and synthetic water-soluble polymers, but trends in the shear stiffness with gel swelling are clearly different from those normally observed in chemically cross-linked gels and are correspondingly difficult to interpret. The salt specificity of swelling and mechanical properties of nonionic hydrogels is important for any potential application in which a wide range of salt concentrations and types are encountered.
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Affiliation(s)
- Mengxue Zhang
- Department of Polymer Engineering , University of Akron , Akron , Ohio 44325 United States
| | - Clinton G Wiener
- Department of Polymer Engineering , University of Akron , Akron , Ohio 44325 United States
| | | | - Jack F Douglas
- Materials Science and Engineering Division , National Institute of Standards and Technology , Gaithersburg , Maryland 20899 United States
| | - Bryan D Vogt
- Department of Chemical Engineering , The Pennsylvania State University , University Park , Pennsylvania 16802 United States
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Wang J, Chen Z, Li X, Liu M, Zhu Y, Jiang L. Plastic-like Hydrogels with Reversible Conversion of Elasticity and Plasticity and Tunable Mechanical Properties. ACS APPLIED MATERIALS & INTERFACES 2019; 11:41659-41667. [PMID: 31584262 DOI: 10.1021/acsami.9b14158] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
The development of hydrogels with excellent mechanical properties is highly desirable in both fundamental studies and practical applications. But it is difficult to construct hydrogels that are both tough and stiff at the same time as these properties often contradict each other. Here, we report a facile and efficient method for producing ultrastiff and tough poly(N-isopropylacrylamide) (PNIPAM)/clay plastic-like hydrogels (PHs) by immersing PNIPAM/clay hydrogel into NaCl aqueous solution. The optimized PH-2-6 presented superior strength, modulus, and toughness (4.1 ± 0.2 MPa, 41.6 ± 8 MPa, and 15.85 ± 0.8 MJ m-3, respectively). The unique mechanical properties are attributed to the synergistic effect of the osmotic pressure and the strong affinity between Na+ ion and the PNIPAM chain, which lead to a high degree of PNIPAM chain entanglement and fixing. Note that the PHs were molded into any required shape under an applied force, and retained permanently their shapes even if the load was removed, thus displaying typical plasticity. However, the deformed PHs could return to their original size and softness of hydrogel when immersed in pure water, which is a kind of shape-memory effect. The reversible conversion of elasticity and plasticity and shape memory arise from a kind of dynamic physical across-linking of Na+ and PNIPAM molecular chains, which could exist in the salt aqueous and disintegrate in water reversibly. Moreover, the mechanical properties of hydrogel can be tuned by adjusting the salt concentration and immersion time. The facile strategy may provide further avenue in developing hydrogels with such versatile dynamic behaviors to expand their applications.
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Chen W, Li N, Ma Y, Minus ML, Benson K, Lu X, Wang X, Ling X, Zhu H. Superstrong and Tough Hydrogel through Physical Cross-Linking and Molecular Alignment. Biomacromolecules 2019; 20:4476-4484. [PMID: 31644270 DOI: 10.1021/acs.biomac.9b01223] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Hydrogels are attracting increasing attention due to their potential use in various fields. However, most of the existing hydrogels have limitations in either dissipating mechanical energy or maintaining high stretchability under deformation, thus do not possess high mechanical properties. Herein, poly(vinyl alcohol) (PVA)-tannic acid (TA) hydrogels with both high mechanical strength and stretchability were obtained via a step-by-step physical cross-linking and molecular alignment method. Saline-triggered physical interactions serve as "sacrifice domains" to dissipate energy and endow PVA-based hydrogel with high mechanical strength (≈16 MPa) and stretchability (≈1000%). Due to the reversible arranging and disassociating property of physical interactions, PVA-TA hydrogels show excellent shape memory performance. We further demonstrated an effective approach to fabricate strong and aligned PVA-TA thread. The resultant well-aligned PVA-TA dry thread reveals an ultrahigh mechanical tensile strength of up to 750 MPa, nearly 45 times higher than PVA-TA thread with no alignment. Wide-angle X-ray two-dimensional diffraction images further confirmed the alignment of PVA fibers in stretching direction. In addition, we applied the PVA-TA hydrogel as suture and evaluated the cytotoxicity and biocompatibility of the PVA-TA suture.
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Affiliation(s)
- Wei Chen
- Department of Mechanical and Industrial Engineering , Northeastern University , Boston , Massachusetts 02215 , United States.,College of Engineering , Qufu Normal University , Rizhao 276826 , China
| | - Nan Li
- Department of Mechanical and Industrial Engineering , Northeastern University , Boston , Massachusetts 02215 , United States.,College of Engineering , Qufu Normal University , Rizhao 276826 , China
| | - Yi Ma
- Department of Mechanical and Industrial Engineering , Northeastern University , Boston , Massachusetts 02215 , United States
| | - Marilyn L Minus
- Department of Mechanical and Industrial Engineering , Northeastern University , Boston , Massachusetts 02215 , United States
| | - Kenneth Benson
- Department of Mechanical and Industrial Engineering , Northeastern University , Boston , Massachusetts 02215 , United States
| | - Xiuling Lu
- Department of Pharmaceutical Sciences , University of Connecticut , Storrs , Connecticut 06269 , United States
| | - Xingzhi Wang
- Department of Chemistry , Boston University , Boston , Massachusetts 02215 , United States
| | - Xi Ling
- Department of Chemistry , Boston University , Boston , Massachusetts 02215 , United States
| | - Hongli Zhu
- Department of Mechanical and Industrial Engineering , Northeastern University , Boston , Massachusetts 02215 , United States
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Shu M, Long S, Huang Y, Li D, Li H, Li X. High strength and antibacterial polyelectrolyte complex CS/HS hydrogel films for wound healing. SOFT MATTER 2019; 15:7686-7694. [PMID: 31498364 DOI: 10.1039/c9sm01380f] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
We report a simple and facile self-assembly approach to fabricate polyelectrolyte complex (PEC) hydrogel films with positively charged chitosan (CS) and negatively charged heparin sodium (HS) by combining hydrogen bonding and electrostatic interactions. The CS/HS hydrogel films exhibited excellent tensile strength and toughness, good self-recovery ability, superior water absorbency, and pH-dependent surface charge characteristics. The gelation mechanism was investigated by zeta potential measurements. The CS/HS hydrogel films exhibited high antibacterial efficacy against E. coli at selected pHs or when coordinated with various metal ions and a significant effect on accelerating wound healing. The self-assembly approach presented in this work may serve as a generic strategy for the fabrication of novel multi-functional PEC hydrogels for broad biomedical applications.
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Affiliation(s)
- Mengmeng Shu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China.
| | - Shijun Long
- Collaborative Innovation Centre of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
| | - Yiwan Huang
- Collaborative Innovation Centre of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
| | - Dapeng Li
- Bioengineering Department, College of Engineering, University of Massachusetts Dartmouth, North Dartmouth, MA 02747-2300, USA
| | - Haiyan Li
- Med-X Research Institute, School of Biomedical Engineering, Shanghai Jiao Tong University, Shanghai 200030, China
| | - Xuefeng Li
- Hubei Provincial Key Laboratory of Green Materials for Light Industry, Hubei University of Technology, Wuhan 430068, China. and Collaborative Innovation Centre of Green Light-weight Materials and Processing, Hubei University of Technology, Wuhan 430068, China
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Liu Y, Xiong D. Self‐healable polyacrylic acid‐polyacrylamide‐ferric ion dual‐crosslinked hydrogel with good biotribological performance as a load‐bearing surface. J Appl Polym Sci 2019. [DOI: 10.1002/app.48499] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yuntong Liu
- School of Materials Science and EngineeringNanjing University of Science and Technology 210094 Nanjing China
| | - Dangsheng Xiong
- School of Materials Science and EngineeringNanjing University of Science and Technology 210094 Nanjing China
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Wang C, Deitrick K, Seo J, Cheng Z, Zacharia NS, Weiss RA, Vogt BD. Manipulating the Mechanical Response of Hydrophobically Cross-Linked Hydrogels with Ionic Associations. Macromolecules 2019. [DOI: 10.1021/acs.macromol.9b00830] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Chao Wang
- Department of Polymer Engineering, University of Akron, 250 South Forge Street, Akron, Ohio 44325, United States
| | - Katherine Deitrick
- Department of Polymer Engineering, University of Akron, 250 South Forge Street, Akron, Ohio 44325, United States
| | - Junyoung Seo
- Department of Polymer Engineering, University of Akron, 250 South Forge Street, Akron, Ohio 44325, United States
| | - Ziwei Cheng
- Department of Chemical and Biomolecular Engineering, Catalysis Center for Energy Innovation, University of Delaware, 221 Academy Street, Newark, Delaware 19716, United States
| | - Nicole S. Zacharia
- Department of Polymer Engineering, University of Akron, 250 South Forge Street, Akron, Ohio 44325, United States
| | - R. A. Weiss
- Department of Polymer Engineering, University of Akron, 250 South Forge Street, Akron, Ohio 44325, United States
| | - Bryan D. Vogt
- Department of Polymer Engineering, University of Akron, 250 South Forge Street, Akron, Ohio 44325, United States
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38
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Jing Z, Zhang Q, Liang Y, Zhang Z, Hong P, Li Y. Synthesis of poly(acrylic acid)–Fe
3+
/gelatin/poly(vinyl alcohol) triple‐network supramolecular hydrogels with high toughness, high strength and self‐healing properties. POLYM INT 2019. [DOI: 10.1002/pi.5876] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Zhanxin Jing
- College of Chemistry and EnvironmentGuangdong Ocean University Zhanjiang People's Republic of China
| | - Qiangshan Zhang
- College of Chemistry and EnvironmentGuangdong Ocean University Zhanjiang People's Republic of China
| | - Yan‐Qiu Liang
- College of Chemistry and EnvironmentGuangdong Ocean University Zhanjiang People's Republic of China
| | - Zhaoxia Zhang
- College of Chemistry and EnvironmentGuangdong Ocean University Zhanjiang People's Republic of China
| | - Pengzhi Hong
- College of Chemistry and EnvironmentGuangdong Ocean University Zhanjiang People's Republic of China
| | - Yong Li
- College of Chemistry and EnvironmentGuangdong Ocean University Zhanjiang People's Republic of China
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Jing Z, Xu A, Liang YQ, Zhang Z, Yu C, Hong P, Li Y. Biodegradable Poly(acrylic acid- co-acrylamide)/Poly(vinyl alcohol) Double Network Hydrogels with Tunable Mechanics and High Self-healing Performance. Polymers (Basel) 2019; 11:E952. [PMID: 31159410 PMCID: PMC6631433 DOI: 10.3390/polym11060952] [Citation(s) in RCA: 25] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2019] [Revised: 05/12/2019] [Accepted: 05/12/2019] [Indexed: 02/04/2023] Open
Abstract
We proposed a novel strategy in the fabrication of biodegradable poly(acrylic acid-co-acrylamide)/poly(vinyl alcohol) (P(AAc-co-Am)/PVA) double network (DN) hydrogels with good mechanical and self-healing properties. In the DN hydrogel system, P(AAc-co-Am) polymers form a network through the ionic coordinates between -COO- and Fe3+ and hydrogen bonding between -COOH and -CONH2, while another network is fabricated by the complexation between PVA and borax. The influences of the composition on the rheological behaviors and mechanical properties of the synthesized DN hydrogels were investigated. The rheological measurements revealed that the viscoelasticity and stiffness of the P(AAc-co-Am)/PVA DN hydrogels increase as the acrylamide and Fe3+ concentrations increase. At 0.05 mmol of Fe3+ and 50% of acrylamide, tensile strength and elongation at break of P(AAc-co-Am)/PVA DN hydrogels could reach 329.5 KPa and 12.9 mm/mm, respectively. These properties arise from the dynamic reversible bonds existed in the P(AAc-co-Am)/PVA DN hydrogels. These reversible bonds also give good self-healing properties, and the maximum self-healing efficiency of P(AAc-co-Am)/PVA DN hydrogels is up to 96.4%. The degradation test of synthesized DN hydrogels was also conducted under simulated physiological conditions and the weight loss could reach 74% in the simulated intestinal fluid. According to the results presented here, the synthesized P(AAc-co-Am)/PVA DN hydrogels have a potential application prospect in various biomedical fields.
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Affiliation(s)
- Zhanxin Jing
- College of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, Guangdong, China.
| | - Aixing Xu
- College of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, Guangdong, China.
| | - Yan-Qiu Liang
- College of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, Guangdong, China.
| | - Zhaoxia Zhang
- College of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, Guangdong, China.
| | - Chuanming Yu
- College of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, Guangdong, China.
| | - Pengzhi Hong
- College of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, Guangdong, China.
| | - Yong Li
- College of Chemistry and Environment, Guangdong Ocean University, Zhanjiang 524088, Guangdong, China.
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40
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Yang B, Yuan W. Highly Stretchable and Transparent Double-Network Hydrogel Ionic Conductors as Flexible Thermal-Mechanical Dual Sensors and Electroluminescent Devices. ACS APPLIED MATERIALS & INTERFACES 2019; 11:16765-16775. [PMID: 30983316 DOI: 10.1021/acsami.9b01989] [Citation(s) in RCA: 135] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
The latest generation flexible devices feature materials that are conductive, highly stretchable, and transparent to meet the requirements of a reliable performance. However, the existing conductors are mostly electronic conductors, which cannot satisfy these high-performance challenges. A robust hydrogel ionic conductor was rapidly fabricated with a facile one-pot approach by employing bioinspired agar with a physically cross-linked network, polyacrylamide (PAM) with a photoinitiated cross-linked network under appropriate UV intensity, and Li+ as conductive ions. The resulting Li+/agar/PAM ionic double-network hydrogels could be fabricated into various shapes through injection. The unique ionic hydrogel showed a remarkable stretchability with over 1600% extension, high tension/compression strength (0.22 MPa/3.5 MPa), and toughness (2.2 MJ/m3). Furthermore, it was demonstrated to possess dual sensory capabilities through the combination of both temperature and mechanical deformation. This hydrogel ionic conductor exhibited high stretching sensitivity with a gauge factor of 1.8 at strain 1100% and bending sensitivity in a broad angle range of 30-150°, respectively. Such highly optical transparency and elasticity endow the hydrogel-phosphor composites with promising luminescent properties. The multifunctional ionic hydrogel can be used as soft conductors for application in flexible devices such as ionic skin for wearable sensors and luminescence display.
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Affiliation(s)
- Bowen Yang
- School of Materials Science and Engineering, Key Laboratory of Advanced Civil Materials of Ministry of Education , Tongji University , Shanghai 201804 , People's Republic of China
| | - Weizhong Yuan
- School of Materials Science and Engineering, Key Laboratory of Advanced Civil Materials of Ministry of Education , Tongji University , Shanghai 201804 , People's Republic of China
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41
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Qin Y, Wang J, Qiu C, Xu X, Jin Z. A Dual Cross-Linked Strategy to Construct Moldable Hydrogels with High Stretchability, Good Self-Recovery, and Self-Healing Capability. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2019; 67:3966-3980. [PMID: 30888158 DOI: 10.1021/acs.jafc.8b05147] [Citation(s) in RCA: 43] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Most conventional synthetic hydrogels suffer from poor mechanical properties; despite recent significant progress in fabricating tough hydrogels, it is still a challenge to simultaneously realize high stretchability, self-recovery, and self-healing capability in a hydrogel. In this work, a new type of starch/PVA/borax hybrid dual cross-linked (DC) hydrogel was synthesized by a one-pot method. The as-prepared DC hydrogels exhibited mechanical properties of remarkable extensibility (ca. 2485%), excellent toughness (ca. 290.5 kJ m-3), high compression strength (ca. 547.8 kPa), rapid recoverability (81.9% energy recovery after 30 min), and free-shapeable behavior. More impressively, the DC gels sustained approximately 300 times their own weight and exhibited an outstanding self-healing capability at room temperature both in air and underwater. Furthermore, the adsorption amount of methylene blue onto the anionic DC gel (144.68 mg/g) was much higher than that of corn starch gel. Consequently, the eco-friendly, stable, and biodegradable hydrogels will have a great potential application in removing anionic dyes from the wastewater produced by agriculture and industry.
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42
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Zhao H, Xu K, Zhu P, Wang C, Chi Q. Smart hydrogels with high tunability of stiffness as a biomimetic cell carrier. Cell Biol Int 2019; 43:84-97. [DOI: 10.1002/cbin.11091] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2018] [Accepted: 12/23/2018] [Indexed: 12/23/2022]
Affiliation(s)
- Han Zhao
- Hefei National Laboratory for Physical Sciences at the Microscale, School of Life Sciences; University of Science and Technology of China; Hefei China
| | - Kang Xu
- Department of Cardiovascular Surgery; Union Hospital; Tongji Medical College, Huazhong University of Science and Technology; Wuhan China
| | - Peng Zhu
- Department of Cardiovascular Surgery; Union Hospital; Tongji Medical College, Huazhong University of Science and Technology; Wuhan China
| | - Chunli Wang
- “111 ” Project Laboratory of Biomechanics and Tissue Repair; Bioengineering College; Chongqing University; Chongqing China
| | - Qingjia Chi
- Hubei Key Laboratory of Theory and Application of Advanced Materials Mechanics; Department of Mechanics and Engineering Structure; Wuhan University of Technology; Wuhan China
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43
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Chi H, Qiao Y, Wang B, Hou Y, Li Q, Li K, Liu Z. Swelling, thermal stability, antibacterial properties enhancement on composite hydrogel synthesized by chitosan-acrylic acid and ZnO nanowires. POLYM-PLAST TECH MAT 2019. [DOI: 10.1080/25740881.2018.1563138] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Hongjin Chi
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei, China
| | - Yu Qiao
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei, China
| | - Bo Wang
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei, China
| | - Yatong Hou
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei, China
| | - Qiurong Li
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei, China
| | - Kun Li
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei, China
- Engineering Research Center of Functional Nucleic Acids in Qinhuangdao, Qinhuangdao, Hebei, China
| | - Zhiwei Liu
- School of Environmental and Chemical Engineering, Yanshan University, Qinhuangdao, Hebei, China
- Engineering Research Center of Functional Nucleic Acids in Qinhuangdao, Qinhuangdao, Hebei, China
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Li X, Wang H, Li D, Long S, Zhang G, Wu Z. Dual Ionically Cross-linked Double-Network Hydrogels with High Strength, Toughness, Swelling Resistance, and Improved 3D Printing Processability. ACS APPLIED MATERIALS & INTERFACES 2018; 10:31198-31207. [PMID: 30148345 DOI: 10.1021/acsami.8b13038] [Citation(s) in RCA: 101] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
We report a dual ionic cross-linking approach for the preparation of double-network hydrogels with robustness, high strength, and toughness, sodium alginate/poly(acrylamide- co-acrylic acid)/Fe3+ (SA/P(AAm- co-AAc)/Fe3+), in a facile "one-step" dual ionic cross-linking method. We take advantage of the abundant carboxyl groups on alginate molecules and the copolymer chains and their high coordination capacity with multivalent metal ions to obtain hydrogels with high strength and toughness. The optimal SA/P(AAm- co-AAc)/Fe3+ (SA 2 wt % and AAc 5 mol %) hydrogels showed a remarkable mechanical performance with 3.24 MPa tensile strength and 1228% strain, both of which remained stable with 76% water content and were highly swelling resistant in an aqueous environment. The hydrogels possessed high fatigue resistance, self-recovery, pH-triggered healing capability, shape memory, and reversible gel-sol transition facilitated by pH regulation. Moreover, they show three-dimensional (3D) printing processability by properly adjusting the solution viscosity. The approach may provide a convenient way of obtaining hydrogels having high strength and toughness with a number of desirable properties for a broad range of biomedical applications.
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Affiliation(s)
| | | | - Dapeng Li
- Bioengineering Department, College of Engineering , University of Massachusetts Dartmouth , North Dartmouth , Massachusetts 02747-2300 , United States
| | | | | | - ZiLiang Wu
- Department of Polymer Science and Engineering , Zhejiang University , Hangzhou 310027 , P. R. China
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45
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Li X, Zhang Y, Yang Q, Li D, Zhang G, Long S. Agar/PAAc-Fe3+ hydrogels with pH-sensitivity and high toughness using dual physical cross-linking. IRANIAN POLYMER JOURNAL 2018. [DOI: 10.1007/s13726-018-0657-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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46
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Wang XH, Song F, Xue J, Qian D, Wang XL, Wang YZ. Mechanically strong and tough hydrogels with excellent anti-fatigue, self-healing and reprocessing performance enabled by dynamic metal-coordination chemistry. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.08.063] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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47
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Li H, Wang H, Zhang D, Xu Z, Liu W. A highly tough and stiff supramolecular polymer double network hydrogel. POLYMER 2018. [DOI: 10.1016/j.polymer.2018.08.029] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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48
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Li X, Li R, Liu Z, Gao X, Long S, Zhang G. Integrated Functional High-Strength Hydrogels with Metal-Coordination Complexes and H-Bonding Dual Physically Cross-linked Networks. Macromol Rapid Commun 2018; 39:e1800400. [DOI: 10.1002/marc.201800400] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 07/02/2018] [Indexed: 12/25/2022]
Affiliation(s)
- Xuefeng Li
- Hubei Provincial Key Laboratory of Green Materials for Light Industry; Hubei University of Technology; Wuhan 430068 P. R. China
- Collaborative Innovation Center of Green Light-Weight Materials and Processing; Hubei University of Technology; Wuhan 430068 P. R. China
| | - Rongzhe Li
- Hubei Provincial Key Laboratory of Green Materials for Light Industry; Hubei University of Technology; Wuhan 430068 P. R. China
| | - Zuifang Liu
- Hubei Provincial Key Laboratory of Green Materials for Light Industry; Hubei University of Technology; Wuhan 430068 P. R. China
| | - Xiang Gao
- Hubei Provincial Key Laboratory of Green Materials for Light Industry; Hubei University of Technology; Wuhan 430068 P. R. China
| | - Shijun Long
- Collaborative Innovation Center of Green Light-Weight Materials and Processing; Hubei University of Technology; Wuhan 430068 P. R. China
| | - Gaowen Zhang
- Hubei Provincial Key Laboratory of Green Materials for Light Industry; Hubei University of Technology; Wuhan 430068 P. R. China
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49
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Sun N, Sun P, Wu A, Qiao X, Lu F, Zheng L. Facile fabrication of thermo/redox responsive hydrogels based on a dual crosslinked matrix for a smart on-off switch. SOFT MATTER 2018; 14:4327-4334. [PMID: 29761197 DOI: 10.1039/c8sm00504d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
Stimuli-responsive or "smart" soft materials have raised considerable attention due to their ability to spontaneously respond to external environmental variations and have a great potential for wide applications. Herein, a thermo/redox responsive hydrogel is facilely constructed based on a dual crosslinked matrix: the primary chemical crosslinked copolymer is composed of thermo-responsive poly(N-isopropylacrylamide) (PNIPAM) and poly(ionic liquid), and the secondary physical crosslinking component is generated by the ionic coordination between iron ions and carboxyl groups in the poly(ionic liquid). The non-covalent ion coordination crosslinking is introduced into a covalently crosslinked network, which further strengthens the soft PNIPAM matrix and enhances the mechanical performances of the hydrogels. The excellent thermosensitivity of PNIPAM and the good conductive property of poly(ionic liquid) provide the hydrogel with an attractive performance as a thermo-responsive switch. Moreover, the trapped iron ions in the network endow the hydrogels with redox-responsiveness, which could be reversibly chemically oxidized and reduced. The mechanical strength of hydrogels could also be tuned by the crosslinked capacity of iron ions within the gel matrix between the strong binding of the oxidized state (Fe3+) and poor coordination of the reduced state (Fe2+). These stimuli-responsive hydrogels have the potential to be used as smart materials for stimuli-responsive devices.
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Affiliation(s)
- Na Sun
- Key Laboratory of Colloid and Interface Chemistry, Shandong University, Ministry of Education, Jinan, 250100, P. R. China.
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Anjum S, Gurave PM, Gupta B. Calcium ion-induced self-healing pattern of chemically crosslinked poly(acrylic acid) hydrogels. POLYM INT 2018. [DOI: 10.1002/pi.5517] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Sadiya Anjum
- Bioengineering Laboratory, Department of Textile Technology; Indian Institute of Technology; New Delhi India
| | - Pramod M Gurave
- Bioengineering Laboratory, Department of Textile Technology; Indian Institute of Technology; New Delhi India
| | - Bhuvanesh Gupta
- Bioengineering Laboratory, Department of Textile Technology; Indian Institute of Technology; New Delhi India
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