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Kim AR, Mitra S, Shyam S, Zhao B, Mitra SK. Flexible hydrogels connecting adhesion and wetting. SOFT MATTER 2024; 20:5516-5526. [PMID: 38651874 DOI: 10.1039/d4sm00022f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Raindrops falling on window-panes spread upon contact, whereas hail can cause dents or scratches on the same glass window upon contact. While the former phenomenon resembles classical wetting, the latter is dictated by contact and adhesion theories. The classical Young-Dupre law applies to the wetting of pure liquids on rigid solids, whereas conventional contact mechanics theories account for rigid-on-soft or soft-on-rigid contacts with small deformations in the elastic limit. However, the crossover between adhesion and wetting is yet to be fully resolved. The key lies in the study of soft-on-soft interactions with material properties intermediate between liquids and solids. In this work, we translate adhesion to wetting by experimentally probing the static signature of hydrogels in contact with soft PDMS of varying elasticity of both the components. Consequently, we probe this transition across six orders of magnitude in terms of the characteristic elasto-adhesive parameter of the system. In doing so, we reveal previously unknown phenomenology and a theoretical model which smoothly bridges adhesion of glass spheres with total wetting of pure liquids on any given substrate.
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Affiliation(s)
- A-Reum Kim
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | - Surjyasish Mitra
- Department of Mechanical & Mechatronics Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | - Sudip Shyam
- Department of Mechanical & Mechatronics Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | - Boxin Zhao
- Department of Chemical Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
| | - Sushanta K Mitra
- Department of Mechanical & Mechatronics Engineering, Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
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Lu P, Ruan D, Huang M, Tian M, Zhu K, Gan Z, Xiao Z. Harnessing the potential of hydrogels for advanced therapeutic applications: current achievements and future directions. Signal Transduct Target Ther 2024; 9:166. [PMID: 38945949 PMCID: PMC11214942 DOI: 10.1038/s41392-024-01852-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2023] [Revised: 04/02/2024] [Accepted: 04/28/2024] [Indexed: 07/02/2024] Open
Abstract
The applications of hydrogels have expanded significantly due to their versatile, highly tunable properties and breakthroughs in biomaterial technologies. In this review, we cover the major achievements and the potential of hydrogels in therapeutic applications, focusing primarily on two areas: emerging cell-based therapies and promising non-cell therapeutic modalities. Within the context of cell therapy, we discuss the capacity of hydrogels to overcome the existing translational challenges faced by mainstream cell therapy paradigms, provide a detailed discussion on the advantages and principal design considerations of hydrogels for boosting the efficacy of cell therapy, as well as list specific examples of their applications in different disease scenarios. We then explore the potential of hydrogels in drug delivery, physical intervention therapies, and other non-cell therapeutic areas (e.g., bioadhesives, artificial tissues, and biosensors), emphasizing their utility beyond mere delivery vehicles. Additionally, we complement our discussion on the latest progress and challenges in the clinical application of hydrogels and outline future research directions, particularly in terms of integration with advanced biomanufacturing technologies. This review aims to present a comprehensive view and critical insights into the design and selection of hydrogels for both cell therapy and non-cell therapies, tailored to meet the therapeutic requirements of diverse diseases and situations.
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Affiliation(s)
- Peilin Lu
- Nanomedicine Research Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, PR China
- Department of Minimally Invasive Interventional Radiology, and Laboratory of Interventional Radiology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, PR China
| | - Dongxue Ruan
- State Key Laboratory of Respiratory Disease, National Clinical Research Center for Respiratory Disease, National Center for Respiratory Medicine, Department of Respiratory and Critical Care Medicine, Guangzhou Institute for Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510120, PR China
| | - Meiqi Huang
- Department of Minimally Invasive Interventional Radiology, and Laboratory of Interventional Radiology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, PR China
| | - Mi Tian
- Department of Stomatology, Chengdu Second People's Hospital, Chengdu, 610021, PR China
| | - Kangshun Zhu
- Department of Minimally Invasive Interventional Radiology, and Laboratory of Interventional Radiology, The Second Affiliated Hospital of Guangzhou Medical University, Guangzhou, 510260, PR China.
| | - Ziqi Gan
- Hospital of Stomatology, Guangdong Provincial Key Laboratory of Stomatology, Guanghua School of Stomatology, Sun Yat-sen University, Guangzhou, 510055, PR China.
| | - Zecong Xiao
- Nanomedicine Research Center, The Third Affiliated Hospital of Sun Yat-sen University, Guangzhou, 510630, PR China.
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Jia B, Huang H, Dong Z, Ren X, Lu Y, Wang W, Zhou S, Zhao X, Guo B. Degradable biomedical elastomers: paving the future of tissue repair and regenerative medicine. Chem Soc Rev 2024; 53:4086-4153. [PMID: 38465517 DOI: 10.1039/d3cs00923h] [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: 03/12/2024]
Abstract
Degradable biomedical elastomers (DBE), characterized by controlled biodegradability, excellent biocompatibility, tailored elasticity, and favorable network design and processability, have become indispensable in tissue repair. This review critically examines the recent advances of biodegradable elastomers for tissue repair, focusing mainly on degradation mechanisms and evaluation, synthesis and crosslinking methods, microstructure design, processing techniques, and tissue repair applications. The review explores the material composition and cross-linking methods of elastomers used in tissue repair, addressing chemistry-related challenges and structural design considerations. In addition, this review focuses on the processing methods of two- and three-dimensional structures of elastomers, and systematically discusses the contribution of processing methods such as solvent casting, electrostatic spinning, and three-/four-dimensional printing of DBE. Furthermore, we describe recent advances in tissue repair using DBE, and include advances achieved in regenerating different tissues, including nerves, tendons, muscle, cardiac, and bone, highlighting their efficacy and versatility. The review concludes by discussing the current challenges in material selection, biodegradation, bioactivation, and manufacturing in tissue repair, and suggests future research directions. This concise yet comprehensive analysis aims to provide valuable insights and technical guidance for advances in DBE for tissue engineering.
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Affiliation(s)
- Ben Jia
- School of Civil Aviation, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Heyuan Huang
- School of Aeronautics, Northwestern Polytechnical University, Xi'an, 710072, China.
| | - Zhicheng Dong
- School of Civil Aviation, Northwestern Polytechnical University, Xi'an, 710072, China
| | - Xiaoyang Ren
- School of Aeronautics, Northwestern Polytechnical University, Xi'an, 710072, China.
| | - Yanyan Lu
- School of Aeronautics, Northwestern Polytechnical University, Xi'an, 710072, China.
| | - Wenzhi Wang
- School of Aeronautics, Northwestern Polytechnical University, Xi'an, 710072, China.
| | - Shaowen Zhou
- Department of Periodontology, College of Stomatology, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Xin Zhao
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
| | - Baolin Guo
- State Key Laboratory for Mechanical Behavior of Materials, and Frontier Institute of Science and Technology, Xi'an Jiaotong University, Xi'an, 710049, China.
- Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an 710049, China
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Zhao X, Demchuk Z, Tian J, Luo J, Li B, Cao K, Sokolov AP, Hun D, Saito T, Cao PF. Ductile adhesive elastomers with force-triggered ultra-high adhesion strength. MATERIALS HORIZONS 2024; 11:969-977. [PMID: 38053446 DOI: 10.1039/d3mh01280h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
Elastomers play a vital role in many forthcoming advanced technologies in which their adhesive properties determine materials' interface performance. Despite great success in improving the adhesive properties of elastomers, permanent adhesives tend to stick to the surfaces prematurely or result in poor contact depending on the installation method. Thus, elastomers with on-demand adhesion that is not limited to being triggered by UV light or heat, which may not be practical for scenarios that do not allow an additional external source, provide a solution to various challenges in conventional adhesive elastomers. Herein, we report a novel, ready-to-use, ultra high-strength, ductile adhesive elastomer with an on-demand adhesion feature that can be easily triggered by a compression force. The precursor is mainly composed of a capsule-separated, two-component curing system. After a force-trigger and curing process, the ductile adhesive elastomer exhibits a peel strength and a lap shear strength of 1.2 × 104 N m-1 and 7.8 × 103 kPa, respectively, which exceed the reported values for advanced ductile adhesive elastomers. The ultra-high adhesion force is attributed to the excellent surface contact of the liquid-like precursor and to the high elastic modulus of the cured elastomer that is reinforced by a two-phase design. Incorporation of such on-demand adhesion into an elastomer enables a controlled delay between installation and curing so that these can take place under their individual ideal conditions, effectively reducing the energy cost, preventing failures, and improving installation processes.
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Affiliation(s)
- Xiao Zhao
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Zoriana Demchuk
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Jia Tian
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
| | - Jiancheng Luo
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Bingrui Li
- The Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, TN 37996, USA
| | - Ke Cao
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Alexei P Sokolov
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
- Department of Chemistry, University of Tennessee, Knoxville, TN 37996, USA
| | - Diana Hun
- Buildings and Transportation Science Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
| | - Tomonori Saito
- Chemical Sciences Division, Oak Ridge National Laboratory, Oak Ridge, TN 37830, USA.
- The Bredesen Center for Interdisciplinary Research and Graduate Education, University of Tennessee, Knoxville, TN 37996, USA
| | - Peng-Fei Cao
- State Key Laboratory of Organic-Inorganic Composites, Beijing University of Chemical Technology, Beijing 100029, China.
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Huang J, Chen G, Han T, Yi C, Zhang Y, Ding L, Sun T, Jin T, Zhou S. Ultrafast and facile construction of programmable, multidimensional wrinkled-patterned polyacrylamide/sodium alginate hydrogels for human skin-like tactile perception. Carbohydr Polym 2023; 319:121196. [PMID: 37567723 DOI: 10.1016/j.carbpol.2023.121196] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2023] [Revised: 07/04/2023] [Accepted: 07/10/2023] [Indexed: 08/13/2023]
Abstract
Customizable structures and patterns are becoming powerful tools for biomimetic design and application of soft materials. The construction of long-range ordered self-wrinkled structures on multi-dimensional and complex-shaped surfaces with facile, fast and efficient strategies still faces serious challenges. During the stretch-recovery process, the carboxyl groups in the polyacrylamide/sodium alginate dual network gel form robust coordination with Fe3+ to achieve a hard shell layer, resulting in a modulus mismatch between the inner soft layer and the outer hard layer, thereby forming a wrinkled surface. This flexible strategy allows simultaneous construction of complex topologies from 1D to 3D wits well-organized microstructure and controllable dimensions. The mechanism of the influence of ion treating time and pre-stretching ratio on wrinkle wavelength was explored in detail. The finite element simulations matched well with the experimental results. Due to the unique surface and dual crosslinking network, the self-wrinkled hydrogel maintains a high sensitivity of up to 67.47 kPa-1 in 1000 compression cycles. As a high-sensitivity pressure sensor integrated into the detection system, it can be efficiently applied to the contact dynamic tactile perception and monitoring of various movement behaviors of the human body.
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Affiliation(s)
- Jianhua Huang
- College of Chemical Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Gong Chen
- College of Information Science and Technology, Nanjing Forestry University, Nanjing 210037, China
| | - Tianhang Han
- College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Chenxin Yi
- College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Yujia Zhang
- College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Lang Ding
- College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Tianshu Sun
- Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian, China
| | - Ting Jin
- College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Shuai Zhou
- College of Science, Nanjing Forestry University, Nanjing 210037, China.
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Sundaran S, Kok LC, Chang HY. Fabrication and in vitroevaluation of photo cross-linkable silk fibroin-epsilon-poly-L-lysine hydrogel for wound repair. Biomed Mater 2023; 18:055021. [PMID: 37567188 DOI: 10.1088/1748-605x/acef86] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2023] [Accepted: 08/10/2023] [Indexed: 08/13/2023]
Abstract
An optimal wound-healing hydrogel requires effective antibacterial properties and a favorable cell adhesion and proliferation environment. AlthoughBombyx morisilk fibroin (SF) possesses inherent wound-healing properties, it lacks these essential qualities. This study aimed to fabricate a novel photo-polymerizable hydrogel by utilizing SF's wound-healing efficiency and the epsilon-poly-L-lysine (EPL) antimicrobial activity. The SF was modified with three different concentrations of glycidyl methacrylate (GMA) to obtain SF-GMA(L), SF-GMA(M), and SF-GMA(H). A methacrylated EPL (EPL-GMA) was also produced. Then, SF-GMA was mixed with EPL-GMA to produce photo-crosslinkable SF-GMA-EPL hydrogels. The SF-GMA(L)-EPL, SF-GMA(M)-EPL, and SF-GMA(H)-EPL hydrogels, fabricated with 20% EPL-GMA, demonstrated maximum antimicrobial activity and mammalian cell adhesion ability. The hydroxyl radical (•OH) scavenging efficiency of the hydrogels was tested and shown to be between 69% and 74%. These hydrogels also exhibited 60% efficiency in removing bacterial lipopolysaccharides. The water absorption ability of the hydrogels was consistent with the size of their internal pores. The hydrogels exhibited a slow degradation fashion, and their degradation products appeared cytocompatible. Finally, the elastomeric properties of the hydrogels were determined, and a storage modulus (G') of 300-600 Pa was demonstrated. In conclusion, the hydrogels created in this study possess excellent biological and physical properties to support wound healing.
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Affiliation(s)
- Sneha Sundaran
- Institute of Molecular Medicine, National Tsing Hua University, Hsin Chu, Taiwan
| | - Li-Ching Kok
- Institute of Molecular Medicine, National Tsing Hua University, Hsin Chu, Taiwan
| | - Hwan-You Chang
- Institute of Molecular Medicine, National Tsing Hua University, Hsin Chu, Taiwan
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McKenzie TJ, Cawood C, Davis C, Ayres N. Synthesis of patterned polyHIPE-hydrogel composite materials using thiol-ene chemistry. J Colloid Interface Sci 2023; 645:502-512. [PMID: 37159992 DOI: 10.1016/j.jcis.2023.04.132] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2023] [Revised: 04/17/2023] [Accepted: 04/24/2023] [Indexed: 05/11/2023]
Abstract
Elastomeric materials combining multiple properties within a single composite are highly desired in applications including biomaterials interfaces, actuators, and soft robotics. High spatial resolution is required to impart different properties across the composite for the intended application, but many techniques used to prepare these composites rely on multistep and complex methods. There is a need for the development of simple and efficient platforms to design layered composite materials. Here, we report the synthesis of horizontally- and vertically-patterned composites consisting of PDMS-based polymerized high internal phase emulsion (polyHIPE) porous elastomers and PDMS/PEG hydrogels. Composites with defined interfaces that were mechanically robust were prepared, and rheological analysis of the polyHIPE and hydrogel layers showed storage moduli values of ∼ 35 kPa and 45 kPa respectively. The compressive Young's Modulus and maximum strain of the polyHIPEs were dependent on the thiol to ene ratio in the formulation and obtained values ranging from 6 to 25 kPa and 50-65% respectively. The mechanical properties, total porosity of the polyHIPE, and swelling ratio of the hydrogel were unaffected by the patterning technique compared to non-patterned controls. PolyHIPE-hydrogel composite materials having up to 7-different horizontally pattered layers could be prepared that could expand and contract up hydration and drying.
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Affiliation(s)
- Tucker J McKenzie
- Department of Chemistry, The University of Cincinnati, P.O. Box 210172, Cincinnati, OH 45221, United States
| | - Christian Cawood
- Department of Chemistry, The University of Cincinnati, P.O. Box 210172, Cincinnati, OH 45221, United States
| | - Chelsea Davis
- Department of Chemistry, The University of Cincinnati, P.O. Box 210172, Cincinnati, OH 45221, United States
| | - Neil Ayres
- Department of Chemistry, The University of Cincinnati, P.O. Box 210172, Cincinnati, OH 45221, United States.
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