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Hu XQ, Zhu JZ, Hao Z, Tang L, Sun J, Sun WR, Hu J, Wang PY, Basmadji NP, Pedraz JL, Vairo C, Lafuente EG, Ramalingam M, Xie S, Wang R. Renewable Electroconductive Hydrogels for Accelerated Diabetic Wound Healing and Motion Monitoring. Biomacromolecules 2024; 25:3566-3582. [PMID: 38780026 DOI: 10.1021/acs.biomac.4c00205] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/25/2024]
Abstract
Diabetic foot ulcers (DFUs), a prevalent complication of diabetes mellitus, may result in an amputation. Natural and renewable hydrogels are desirable materials for DFU dressings due to their outstanding biosafety and degradability. However, most hydrogels are usually only used for wound repair and cannot be employed to monitor motion because of their inherent poor mechanical properties and electrical conductivity. Given that proper wound stretching is beneficial for wound healing, the development of natural hydrogel patches integrated with wound repair properties and motion monitoring was expected to achieve efficient and accurate wound healing. Here, we designed a dual-network (chitosan and sodium alginate) hydrogel embedded with lignin-Ag and quercetin-melanin nanoparticles to achieve efficient wound healing and motion monitoring. The double network formed by the covalent bond and electrostatic interaction confers the hydrogel with superior mechanical properties. Instead of the usual chemical reagents, genipin extracted from Gardenia was used as a cross-linking agent for the hydrogel and consequently improved its biosafety. Furthermore, the incorporation of lignin-Ag nanoparticles greatly enhanced the mechanical strength, antibacterial efficacy, and conductivity of the hydrogel. The electrical conductivity of hydrogels gives them the capability of motion monitoring. The motion sensing mechanism is that stretching of the hydrogel induced by motion changes the conductivity of the hydrogel, thus converting the motion into an electrical signal. Meanwhile, quercetin-melanin nanoparticles confer exceptional adhesion, antioxidant, and anti-inflammatory properties to the hydrogels. The system ultimately achieved excellent wound repair and motion monitoring performance and was expected to be used for stretch-assisted safe and accurate wound repair in the future.
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Affiliation(s)
- Xiao Qian Hu
- Institute of Rehabilitation Medicine, School of Special Education and Rehabilitation, Binzhou Medical University, Yantai 264003, People's Republic of China
- Shandong Laboratory of Advanced Materials and Green Manufacturing, Yantai 264000, People's Republic of China
- Key Laboratory of Tumor Molecular Biology, Binzhou Medical University, Yantai 264003, People's Republic of China
| | - Jia Zhi Zhu
- Institute of Rehabilitation Medicine, School of Special Education and Rehabilitation, Binzhou Medical University, Yantai 264003, People's Republic of China
| | - Zhaokun Hao
- Institute of Rehabilitation Medicine, School of Special Education and Rehabilitation, Binzhou Medical University, Yantai 264003, People's Republic of China
| | - Letian Tang
- Institute of Rehabilitation Medicine, School of Special Education and Rehabilitation, Binzhou Medical University, Yantai 264003, People's Republic of China
| | - Jian Sun
- Institute of Rehabilitation Medicine, School of Special Education and Rehabilitation, Binzhou Medical University, Yantai 264003, People's Republic of China
| | - Wan Ru Sun
- Institute of Rehabilitation Medicine, School of Special Education and Rehabilitation, Binzhou Medical University, Yantai 264003, People's Republic of China
| | - Jiaxiang Hu
- Institute of Rehabilitation Medicine, School of Special Education and Rehabilitation, Binzhou Medical University, Yantai 264003, People's Republic of China
| | - Ping Yu Wang
- Key Laboratory of Tumor Molecular Biology, Binzhou Medical University, Yantai 264003, People's Republic of China
| | - Nicola Paccione Basmadji
- NanoBioCel Group, Department of Pharmacy and Food Science, Faculty of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
- Bioaraba Health Research Institute, Jose Atxotegi, s/n, 01009 Vitoria-Gasteiz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, 28029 Madrid, Spain
| | - José Luis Pedraz
- NanoBioCel Group, Department of Pharmacy and Food Science, Faculty of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
- Bioaraba Health Research Institute, Jose Atxotegi, s/n, 01009 Vitoria-Gasteiz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, 28029 Madrid, Spain
| | - Claudia Vairo
- BIOSASUN S.A., Ctra. Allo-Arroniz Km1, Navarra 31263, Spain
| | | | - Murugan Ramalingam
- NanoBioCel Group, Department of Pharmacy and Food Science, Faculty of Pharmacy, University of the Basque Country (UPV/EHU), 01006 Vitoria-Gasteiz, Spain
- Bioaraba Health Research Institute, Jose Atxotegi, s/n, 01009 Vitoria-Gasteiz, Spain
- Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine (CIBER-BBN), Institute of Health Carlos III, 28029 Madrid, Spain
- Joint Research Laboratory (JRL) on Bioprinting and Advanced Pharma Development, A Joint Venture of TECNALIA and University of the Basque Country, Centro de investigación Lascaray ikergunea, 01006 Vitoria-Gasteiz, Spain
- IKERBASQUE, Basque Foundation for Science, 48013 Bilbao, Spain
- School of Basic Medical Sciences, Binzhou Medical University, Yantai 264003, People's Republic of China
| | - Shuyang Xie
- Shandong Laboratory of Advanced Materials and Green Manufacturing, Yantai 264000, People's Republic of China
- Key Laboratory of Tumor Molecular Biology, Binzhou Medical University, Yantai 264003, People's Republic of China
| | - Ranran Wang
- Institute of Rehabilitation Medicine, School of Special Education and Rehabilitation, Binzhou Medical University, Yantai 264003, People's Republic of China
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Liu Q, Xie M, Wang C, Deng M, Li P, Yang X, Zhao N, Huang C, Zhang X. Rapid Preparation Triggered by Visible Light for Tough Hydrogel Sensors with Low Hysteresis and High Elasticity: Mechanism, Use and Recycle-by-Design. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024:e2311647. [PMID: 38593379 DOI: 10.1002/smll.202311647] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/14/2023] [Revised: 03/05/2024] [Indexed: 04/11/2024]
Abstract
Hydrogels have emerged as promising candidates for flexible devices and water resource management. However, further applications of conventional hydrogels are restricted due to their limited performance and lack of a recycling strategy. Herein, a tough, flexible, and recyclable hydrogel sensor via a visible-light-triggered polymerization is rapidly created. The Zn2+ crosslinked terpolymer is in situ polymerized using g-C3N4 as the sole initiator to form in situ chain entanglements, endowing the hydrogels with low hysteresis and high elasticity. In the use phase, the hydrogel sensor exhibited high ion conductivity, excellent mechanical properties, fast responsiveness, high sensitivity, and remarkable anti-fatigue ability, making it exceptionally effective in accurately monitoring complex human movements. At the end-of-life (EOL), leveraging the synergy between the photodegradation capacity of g-C3N4 and the adsorption function of the hydrogel matrix, the post-consumer hydrogel is converted into water remediation materials, which not only promoted the rapid degradation of organic pollutants, but also facilitated collection and reuse. This innovative strategy combined in situ entangling reinforcement and tailored recycle-by-design that employed g-C3N4 as key blocks in the hydrogel to achieve high performance in the use phase and close the loop through the reutilization at EOL, highlighting the cost-effective synthesis, specialized structure, and life cycle management.
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Affiliation(s)
- Qi Liu
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong, Sichuan, 637002, China
| | - Mingwei Xie
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong, Sichuan, 637002, China
| | - Chenghao Wang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong, Sichuan, 637002, China
| | - Mingming Deng
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong, Sichuan, 637002, China
| | - Ping Li
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong, Sichuan, 637002, China
| | - Xulin Yang
- School of Mechanical Engineering, Sichuan Province Engineering Research Centre for Powder Metallurgy, Chengdu University, Chengdu, 610106, China
| | - Nihui Zhao
- Key Laboratory of Southwest China Wildlife Resources Conservation, the Ministry of Education, College of Life Science, China West Normal University, Nanchong, Sichuan, 637002, China
| | - Chi Huang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong, Sichuan, 637002, China
| | - Xinghua Zhang
- School of Science, Beijing Jiaotong University, Beijing, 100044, China
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Khadem E, Ghafarzadeh M, Kharaziha M, Sun F, Zhang X. Lignin derivatives-based hydrogels for biomedical applications. Int J Biol Macromol 2024; 261:129877. [PMID: 38307436 DOI: 10.1016/j.ijbiomac.2024.129877] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2023] [Revised: 01/21/2024] [Accepted: 01/30/2024] [Indexed: 02/04/2024]
Abstract
Recently, numerous studies have been conducted on renewable polymers derived from different natural sources, exploring their suitability for diverse biomedical applications. Lignin as one of the main components of lignocellulosic has garnered significant attention as a promising alternative to petroleum-based polymers. This interest is primarily due to its cost-effectiveness, biocompatibility, eco-friendly nature, as well as its antioxidant and antimicrobial properties. These characteristics could be more beneficial when incorporating lignin into the formulation of value-added products. Although lignin has a chemical structure that is suitable for various applications, these characteristics require modifications to guarantee that the resultant materials display the desired biological, chemical, and physical properties when applied in the creation of biodegradable hydrogels, particularly for biomedical purposes. This study delineates the recent modification approaches that have been employed in the creation of lignin-based hydrogels. These strategies encompass both chemical and physical interactions with other polymers. Additionally, this review encompasses an examination of the current applications of lignin hydrogels, spanning their use as scaffolds for tissue engineering, carriers for pharmaceuticals, materials for wound dressings and biosensors, and elements in flexible and wearable electronics. Finally, we delve into the challenges and constraints associated with these materials, discuss the necessary steps required to attain the appropriate properties for the development of innovative lignin-based hydrogels, and derive conclusions based on the presented findings.
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Affiliation(s)
- Elham Khadem
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Mohsen Ghafarzadeh
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran
| | - Mahshid Kharaziha
- Department of Materials Engineering, Isfahan University of Technology, Isfahan 84156-83111, Iran.
| | - Fubao Sun
- Key Laboratory of Industrial Biotechnology, Ministry of Education, School of Biotechnology, Jiangnan University, Wuxi 214122, China
| | - Xueming Zhang
- Beijing Key Laboratory of Lignocellulosic Chemistry, Beijing Forestry University, Beijing 100083, China
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Zhang M, Ren J, Li R, Zhang W, Li Y, Yang W. Multifunctional sodium lignosulfonate/xanthan gum/sodium alginate/polyacrylamide ionic hydrogels composite as a high-performance wearable strain sensor. Int J Biol Macromol 2024; 261:129718. [PMID: 38296129 DOI: 10.1016/j.ijbiomac.2024.129718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2023] [Revised: 01/13/2024] [Accepted: 01/22/2024] [Indexed: 02/06/2024]
Abstract
Recently, conductive hydrogels have shown great promise in flexible electronics and are ideal materials for the preparation of wearable strain sensors. However, developing a simple method to produce conductive hydrogels with excellent mechanical properties, self-adhesion, transparency, anti-freezing, and UV resistance remains a significant challenge. A novel sodium lignosulfonate/xanthan gum/sodium alginate/polyacrylamide/Zn2+/DMSO (SLS/XG/SA/PAM/Zn2+/DMSO) ionic conductive hydrogel was developed using a one-pot method. The resulting ionic conductive hydrogels have excellent mechanical properties (stress: 0.13 MPa, strain: 1629 %), high anti-fatigue properties, self-adhesion properties (iron: 7.37 kPa, pigskin: 4.74 kPa), anti-freezing (freezing point: -33.49 °C) and UV resistance by constructing a chemical and physical hybrid cross-linking network. In particular, the conductivity of G hydrogel reached 6.02 S/m at room temperature and 5.52 S/m at -20 °C. Thus, the hydrogel was assembled into a flexible sensor that could distinguish a variety of large and small scales human movements, such as joint bending, swallowing and speaking in real time with high stability and sensitivity. Moreover, the hydrogel could be used as electronic skin just like human skin and touch screen pen to write.
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Affiliation(s)
- Minmin Zhang
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China
| | - Jie Ren
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China.
| | - Ruirui Li
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China
| | - Wenjing Zhang
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China
| | - Yan Li
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China
| | - Wu Yang
- Chemistry & Chemical Engineering College, Northwest Normal University, Key Lab of Polymer Materials of Ministry of Education of Ecological Environment, Key Lab of Bioelectrochemistry & Environmental Analysis of Gansu, Lanzhou 730070, PR China
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5
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Xiao S, Lao Y, Liu H, Li D, Wei Q, Li Z, Lu S. Highly stretchable anti-freeze hydrogel based on aloe polysaccharides with high ionic conductivity for multifunctional wearable sensors. Int J Biol Macromol 2024; 254:127931. [PMID: 37944728 DOI: 10.1016/j.ijbiomac.2023.127931] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 11/01/2023] [Accepted: 11/05/2023] [Indexed: 11/12/2023]
Abstract
Conductive hydrogels have limitations such as non-degradability, loss of electrical conductivity at sub-zero temperatures, and single functionality, which limit their applicability as materials for wearable sensors. To overcome these limitations, this study proposes a bio-based hydrogel using aloe polysaccharides as the matrix and degradable polyvinyl alcohol as a reinforcing material. The hydrogel was crosslinked with borax in a glycerol-water binary solvent system, producing good toughness and compressive strength. Furthermore, the hydrogel was developed as a sensor that could detect both small and large deformations with a low detection limit of 1 % and high stretchability of up to 300 %. Moreover, the sensor exhibited excellent frost resistance at temperatures above -50 °C, and the gauge factor of the hydrogel was 2.86 at 20 °C and 2.12 at -20 °C. The Aloe-polysaccharide-based conductive hydrogels also functioned effectively as a wearable sensor; it detected a wide range of humidities (0-98 % relative humidity) and exhibited fast response and recovery times (1.1 and 0.9 s) while detecting normal human breathing. The polysaccharide hydrogel was also temperature sensitive (1.737 % °C-1) and allowed for information sensing during handwriting.
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Affiliation(s)
- Suijun Xiao
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China
| | - Yufei Lao
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China
| | - Hongbo Liu
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China
| | - Dacheng Li
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China
| | - Qiaoyan Wei
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China
| | - Ziwei Li
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China
| | - Shaorong Lu
- Key Laboratory of New Processing Technology for Nonferrous Metal & Materials, Ministry of Education, Guangxi Key Laboratory of Optical and Electronic Materials and Devices, Guilin University of Technology, Guilin 541004, China.
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Wang F, Chen C, Zhu D, Li W, Liu J, Wang J. Ultrastretchable and highly conductive hydrogels based on Fe 3+- lignin nanoparticles for subzero wearable strain sensor. Int J Biol Macromol 2023; 253:126768. [PMID: 37683743 DOI: 10.1016/j.ijbiomac.2023.126768] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Revised: 08/30/2023] [Accepted: 09/04/2023] [Indexed: 09/10/2023]
Abstract
Conductive hydrogels have attracted considerable interest for potential applications in soft robotics, electronic skin and human monitoring. However, insufficient mechanical characteristics, low adhesion and unsatisfactory electrical conductivity severely restrict future application possibilities of hydrogels. Herein, lignin nanoparticles (LNPs)-Fe3+-ammonium persulfate (APS) catalytic system was introduced to assemble Poly(2-hydroxyethyl methacrylate)/LNPs/Ca2+ (PHEMA/LNPs/Ca) hydrogels. Due to the abundant metal coordination and hydrogen bonds, the composite hydrogel displayed ultrahigh stretchable capacity (3769 %), adhesion properties (248 kPa for skin) and self-healing performance. Importantly, hydrogel sensors possess with high durability, strain sensitivity (GF = 8.75), fast response time and freeze resistance (-20 °C) that could be employed to monitor motion signals in low-temperature regime. Therefore, the LNPs-Fe3+ catalytic system has great potential in preparing hydrogel for various applications such as human-computer interaction, artificial intelligence, personal healthcare and subzero wearable devices. At the same time, incorporation of natural macromolecules into polymer hydrogels is tremendous research significance for investigating high-value utilization of lignin.
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Affiliation(s)
- Fang Wang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China; Jiangsu Key Lab for the Chemistry and Utilization of Agricultural and Forest Biomass, Nanjing Forestry University, Nanjing 210037, China.
| | - Cheng Chen
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Dingfeng Zhu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Wen Li
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jiaqi Liu
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Jiajun Wang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
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Tang C, Fei X, Zhao W, Tian J, Xu L, Wang Y, Li Y. A Janus supramolecular hydrogel prepared by one-pot method for wound dressing. Int J Biol Macromol 2023; 249:126112. [PMID: 37541461 DOI: 10.1016/j.ijbiomac.2023.126112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/24/2023] [Revised: 07/28/2023] [Accepted: 08/01/2023] [Indexed: 08/06/2023]
Abstract
Despite the adhesive hydrogels have gained progress and popularity, it is still an enormous challenge to develop a smart adhesion hydrogel for clinical medicine, which is an asymmetric adhesion hydrogel with on-demand detachment. Motivated by the thermal phase transition mechanism of gelatin, we have synthesized a Janus supramolecular hydrogel dressing with skin temperature-triggered adhesion by a simple one-pot process. This hydrogel has asymmetric and controllable adhesion, which not only can become the external objects barrier but also can achieve repeated adhesion and on-demand detachment triggered by temperature in tens of seconds. This hydrogel presents great mechanical performance (compressive strain of 65 %, 1.38 MPa) owing to the presence of supramolecular interactions in the hydrogel. Additionally, this hydrogel exhibits excellent antibacterial activity and biocompatibility. The synergistic effect of modified gelatin and ionic liquid greatly facilitates wound healing of full-thickness skin with high wound healing efficiency (98.45 %). Therefore, thanks to all these advantages, the Janus supramolecular hydrogel can be applied for wound management and treatment, which has huge potential in healing skin wounds.
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Affiliation(s)
- Chenyang Tang
- Instrumental Analysis Center, Dalian Polytechnic University, Dalian 116034, China; School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Xu Fei
- Instrumental Analysis Center, Dalian Polytechnic University, Dalian 116034, China.
| | - Wenhui Zhao
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Jing Tian
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China.
| | - Longquan Xu
- Instrumental Analysis Center, Dalian Polytechnic University, Dalian 116034, China
| | - Yi Wang
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China
| | - Yao Li
- School of Light Industry and Chemical Engineering, Dalian Polytechnic University, Dalian 116034, China.
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Li X, Meng Y, Cheng Z, Li B. Research Progress and Prospect of Stimuli-Responsive Lignin Functional Materials. Polymers (Basel) 2023; 15:3372. [PMID: 37631428 PMCID: PMC10458107 DOI: 10.3390/polym15163372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2023] [Revised: 08/07/2023] [Accepted: 08/08/2023] [Indexed: 08/27/2023] Open
Abstract
As the world's second most abundant renewable natural phenolic polymer after cellulose, lignin is an extremely complex, amorphous, highly cross-linked class of aromatic polyphenolic macromolecules. Due to its special aromatic structure, lignin is considered to be one of the most suitable candidates to replace fossil materials, thus the research on lignin functional materials has received extensive attention. Because lignin has stimuli-sensitive groups such as phenolic hydroxyl, hydroxyl, and carboxyl, the preparation of stimuli-responsive lignin-based functional materials by combining lignin with some stimuli-responsive polymers is a current research hotspot. Therefore, this article will review the research progress of stimuli-responsive lignin-based functional materials in order to guide the subsequent work. Firstly, we elaborate the source and preparation of lignin and various types of lignin pretreatment methods. We then sort out and discuss the preparation of lignin stimulus-responsive functional materials according to different stimuli (pH, light, temperature, ions, etc.). Finally, we further envision the scope and potential value of lignin stimulus-responsive functional materials for applications in actuators, optical coding, optical switches, solar photothermal converters, tissue engineering, and biomedicine.
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Affiliation(s)
| | | | | | - Bin Li
- College of Chemistry Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, China; (X.L.); (Y.M.); (Z.C.)
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Afewerki S, Edlund U. Combined Catalysis: A Powerful Strategy for Engineering Multifunctional Sustainable Lignin-Based Materials. ACS NANO 2023; 17:7093-7108. [PMID: 37014848 PMCID: PMC10134738 DOI: 10.1021/acsnano.3c00436] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/15/2023] [Accepted: 03/31/2023] [Indexed: 06/19/2023]
Abstract
The production and engineering of sustainable materials through green chemistry will have a major role in our mission of transitioning to a more sustainable society. Here, combined catalysis, which is the integration of two or more catalytic cycles or activation modes, provides innovative chemical reactions and material properties efficiently, whereas the single catalytic cycle or activation mode alone fails in promoting a successful reaction. Polyphenolic lignin with its distinctive structural functions acts as an important template to create materials with versatile properties, such as being tough, antimicrobial, self-healing, adhesive, and environmentally adaptable. Sustainable lignin-based materials are generated by merging the catalytic cycle of the quinone-catechol redox reaction with free radical polymerization or oxidative decarboxylation reaction, which explores a wide range of metallic nanoparticles and metal ions as the catalysts. In this review, we present the recent work on engineering lignin-based multifunctional materials devised through combined catalysis. Despite the fruitful employment of this concept to material design and the fact that engineering has provided multifaceted materials able to solve a broad spectrum of challenges, we envision further exploration and expansion of this important concept in material science beyond the catalytic processes mentioned above. This could be accomplished by taking inspiration from organic synthesis where this concept has been successfully developed and implemented.
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Affiliation(s)
- Samson Afewerki
- Fibre
and Polymer Technology, KTH Royal Institute
of Technology, SE 100 44 Stockholm, Sweden
| | - Ulrica Edlund
- Fibre
and Polymer Technology, KTH Royal Institute
of Technology, SE 100 44 Stockholm, Sweden
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