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Liu W, Liu Y, Zhong S, Chen J, Li Z, Zhang C, Jiang P, Huang X. Soft and Damping Thermal Interface Materials with Honeycomb-Board-Mimetic Filler Network for Electronic Heat Dissipation. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2024; 20:e2400115. [PMID: 38678491 DOI: 10.1002/smll.202400115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 03/21/2024] [Indexed: 05/01/2024]
Abstract
High-power-density electronic devices under vibrations call for soft and damping thermal interface materials (TIMs) for efficient heat dissipation. However, integrating low hardness, high damping, and superior heat transfer capability into one TIM is highly challenging. Herein, soft, damping, and thermally conductive TIMs are designed and prepared by constructing a honeycomb-board-mimetic boron nitride nanosheet (BNNS) network in a dynamic polyimine via one-step horizontal centrifugal casting. The unique filler network makes the TIMs perform a high through-plane thermal conductivity (> 7.69 W m-1 K-1) and a uniform heat transfer process. Meanwhile, the hierarchical dynamic bonding of the polyimine endows the TIMs with low compressive strength (2.16 MPa at 20% strain) and excellent damping performance (tan δ > ≈0.3 at 10-2-102 Hz). The resulting TIMs also exhibit electrical insulation and remarkable recycling ability. Compared with the commercial ones, the TIMs provide better heat dissipation (4.1 °C) for a high-power 5G base station and less temperature fluctuation (1.8 °C) for an automotive insulated gate bipolar transistor (IGBT) under vibrations. This rational design offers a viable approach to prepare soft and damping TIMs for effective heat dissipation of high-power-density electronic devices under vibrations.
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Affiliation(s)
- Wenjie Liu
- Department of Polymer Science and Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Yijie Liu
- Department of Polymer Science and Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Shujing Zhong
- Department of Polymer Science and Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Jie Chen
- Department of Polymer Science and Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Zhe Li
- Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Chongyin Zhang
- Shanghai Engineering Research center of Specialized Polymer materials for Aerospace, Shanghai Aerospace Equipments Manufacturer Co. Ltd., Huaning Road #100, Shanghai, 200245, China
| | - Pingkai Jiang
- Department of Polymer Science and Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, Shanghai, 200240, China
| | - Xingyi Huang
- Department of Polymer Science and Engineering, Shanghai Key Laboratory of Electrical Insulation and Thermal Ageing, Shanghai Jiao Tong University, Shanghai, 200240, China
- Department of Electrical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China
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2
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Aljuaid M, Chang Y, Haddleton DM, Wilson P, Houck HA. Thermoreversible [2 + 2] Photodimers of Monothiomaleimides and Intrinsically Recyclable Covalent Networks Thereof. J Am Chem Soc 2024; 146:19177-19182. [PMID: 38953610 PMCID: PMC11258687 DOI: 10.1021/jacs.4c04193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/25/2024] [Revised: 06/13/2024] [Accepted: 06/24/2024] [Indexed: 07/04/2024]
Abstract
The development of intrinsically recyclable cross-linked materials remains challenged by the inherently unfavorable chemical equilibrium that dictates the efficiency of the reversible covalent bonding/debonding chemistry. Rather than having to (externally) manipulate the bonding equilibrium, we here introduce a new reversible chemistry platform based on monosubstituted thiomaleimides that can undergo complete and independent light-activated covalent bonding and on-demand thermal debonding above 120 °C. Specifically, repeated bonding/debonding of a small-molecule thiomaleimide [2 + 2] photodimer is demonstrated over five heat/light cycles with full conversion in both directions, thereby regenerating its initial monothiomaleimide constituents. This motivated the synthesis of multifunctional thiomaleimide reagents as precursors for the design of covalently cross-linked networks that display intrinsic switching between a monomeric and polymeric state. The resulting materials are shown to covalently dissociate and depolymerize upon heating both in solution and in bulk, thus transforming the densely photo-cross-linked material back into a viscous liquid. Temperature-regulated photorheology evidenced the intrinsic recyclability of the thiomaleimide-based thermosets during multiple cycles of UV cross-linking and thermal de-cross-linking. The thermally reversible photodimerization of thiomaleimides presents a new addition to the designer playground of dynamic polymer networks, providing interesting opportunities for the reprocessing and closed-loop recycling of covalently cross-linked materials.
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Affiliation(s)
- Mohammed Aljuaid
- Photochemistry
for Materials Group, Department of Chemistry, University of Warwick, Library Road, Coventry CV4 7AL, United Kingdom
- Department
of Chemistry, Turabah University College,
Taif University, P.O. Box 11099, Taif 21944, Saudi Arabia
| | - Yujing Chang
- Photochemistry
for Materials Group, Department of Chemistry, University of Warwick, Library Road, Coventry CV4 7AL, United Kingdom
| | - David M. Haddleton
- Photochemistry
for Materials Group, Department of Chemistry, University of Warwick, Library Road, Coventry CV4 7AL, United Kingdom
| | - Paul Wilson
- Photochemistry
for Materials Group, Department of Chemistry, University of Warwick, Library Road, Coventry CV4 7AL, United Kingdom
| | - Hannes A. Houck
- Photochemistry
for Materials Group, Department of Chemistry, University of Warwick, Library Road, Coventry CV4 7AL, United Kingdom
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3
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Stakem KG, Leslie FJ, Gregory GL. Polymer design for solid-state batteries and wearable electronics. Chem Sci 2024; 15:10281-10307. [PMID: 38994435 PMCID: PMC11234879 DOI: 10.1039/d4sc02501f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Accepted: 06/12/2024] [Indexed: 07/13/2024] Open
Abstract
Solid-state batteries are increasingly centre-stage for delivering more energy-dense, safer batteries to follow current lithium-ion rechargeable technologies. At the same time, wearable electronics powered by flexible batteries have experienced rapid technological growth. This perspective discusses the role that polymer design plays in their use as solid polymer electrolytes (SPEs) and as binders, coatings and interlayers to address issues in solid-state batteries with inorganic solid electrolytes (ISEs). We also consider the value of tunable polymer flexibility, added capacity, skin compatibility and end-of-use degradability of polymeric materials in wearable technologies such as smartwatches and health monitoring devices. While many years have been spent on SPE development for batteries, delivering competitive performances to liquid and ISEs requires a deeper understanding of the fundamentals of ion transport in solid polymers. Advanced polymer design, including controlled (de)polymerisation strategies, precision dynamic chemistry and digital learning tools, might help identify these missing fundamental gaps towards faster, more selective ion transport. Regardless of the intended use as an electrolyte, composite electrode binder or bulk component in flexible electrodes, many parallels can be drawn between the various intrinsic polymer properties. These include mechanical performances, namely elasticity and flexibility; electrochemical stability, particularly against higher-voltage electrode materials; durable adhesive/cohesive properties; ionic and/or electronic conductivity; and ultimately, processability and fabrication into the battery. With this, we assess the latest developments, providing our views on the prospects of polymers in batteries and wearables, the challenges they might address, and emerging polymer chemistries that are still relatively under-utilised in this area.
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Affiliation(s)
- Kieran G Stakem
- Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Freddie J Leslie
- Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
| | - Georgina L Gregory
- Chemistry Research Laboratory, University of Oxford 12 Mansfield Road Oxford OX1 3TA UK
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4
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Deng Y, Zhang Q, Feringa BL. Dynamic Chemistry Toolbox for Advanced Sustainable Materials. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308666. [PMID: 38321810 PMCID: PMC11005721 DOI: 10.1002/advs.202308666] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/13/2023] [Revised: 12/28/2023] [Indexed: 02/08/2024]
Abstract
Developing dynamic chemistry for polymeric materials offers chemical solutions to solve key problems associated with current plastics. Mechanical performance and dynamic function are equally important in material design because the former determines the application scope and the latter enables chemical recycling and hence sustainability. However, it is a long-term challenge to balance the subtle trade-off between mechanical robustness and dynamic properties in a single material. The rise of dynamic chemistry, including supramolecular and dynamic covalent chemistry, provides many opportunities and versatile molecular tools for designing constitutionally dynamic materials that can adapt, repair, and recycle. Facing the growing social need for developing advanced sustainable materials without compromising properties, recent progress showing how the toolbox of dynamic chemistry can be explored to enable high-performance sustainable materials by molecular engineering strategies is discussed here. The state of the art and recent milestones are summarized and discussed, followed by an outlook toward future opportunities and challenges present in this field.
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Affiliation(s)
- Yuanxin Deng
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Technology130 Meilong RoadShanghai200237China
- Stratingh Institute for Chemistry and Zernike Institute for Advanced MaterialsFaculty of Science and EngineeringUniversity of GroningenNijenborgh 4Groningen9747 AGThe Netherlands
| | - Qi Zhang
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Technology130 Meilong RoadShanghai200237China
- Stratingh Institute for Chemistry and Zernike Institute for Advanced MaterialsFaculty of Science and EngineeringUniversity of GroningenNijenborgh 4Groningen9747 AGThe Netherlands
| | - Ben L. Feringa
- Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research CenterSchool of Chemistry and Technology130 Meilong RoadShanghai200237China
- Stratingh Institute for Chemistry and Zernike Institute for Advanced MaterialsFaculty of Science and EngineeringUniversity of GroningenNijenborgh 4Groningen9747 AGThe Netherlands
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Feng J, Xing Y, Yin C, Tang P, Jiang F. Wholly sustainable graft copolymers derived from cellulose, lignin, and hemicellulose for high-performance elastomers, adhesives, and UV-blocking materials. Carbohydr Polym 2024; 326:121606. [PMID: 38142094 DOI: 10.1016/j.carbpol.2023.121606] [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: 08/14/2023] [Revised: 10/18/2023] [Accepted: 11/14/2023] [Indexed: 12/25/2023]
Abstract
Sustainable elastomers derived from renewable biobased resources with excellent mechanical properties and varied functions are highly pursued to substitute traditional petroleum-based polymers yet challenging due to their limited macroscopic performance. In this work, we designed a series of wholly biobased cellulose-graft-poly(vanillin acrylate-co-tetrahydrofurfuryl acrylate) (Cell-g-P(VA-co-THFA) copolymer elastomers with cellulose as the rigid backbone, sustainable VA derived from lignin and soft THFA derived from hemicellulose as the hard and soft segments in the rubbery side chains. Moreover, the grafted side chains can be cross-linked to introduce an additional dynamic network structure via Schiff-base chemistry between the aldehyde and amino groups. The mechanical properties of Cell-g-P(VA-co-THFA) copolymer elastomers, including tensile strength, extensibility, elasticity, and toughness can be facilely manipulated by the VA/THFA feed ratio, cellulose content, and cross-linking density. These Cell-g-P(VA-co-THFA) copolymer elastomers are thermally stable and possess outstanding adhesion behavior and prominent UV-shielding performance. Besides dramatically enhanced mechanical properties, the cross-linked Cell-g-P(VA-co-THFA) counterparts exhibit remarkable shape memory behavior. This work provides a robust and convenient strategy for developing strong and versatile sustainable elastomers with different application demands by integrating different biomass feedstocks via elaborate molecular design.
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Affiliation(s)
- Jiajun Feng
- Biomass Molecular Engineering Center, Anhui Provincial Engineering Center for High Performance Biobased Nylons, Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Yuxian Xing
- Biomass Molecular Engineering Center, Anhui Provincial Engineering Center for High Performance Biobased Nylons, Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Chuantao Yin
- Biomass Molecular Engineering Center, Anhui Provincial Engineering Center for High Performance Biobased Nylons, Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Pengfei Tang
- Biomass Molecular Engineering Center, Anhui Provincial Engineering Center for High Performance Biobased Nylons, Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China
| | - Feng Jiang
- Biomass Molecular Engineering Center, Anhui Provincial Engineering Center for High Performance Biobased Nylons, Department of Materials Science and Engineering, Anhui Agricultural University, Hefei, Anhui 230036, China.
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6
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Chen B, Jäkle F. Boron-Nitrogen Lewis Pairs in the Assembly of Supramolecular Macrocycles, Molecular Cages, Polymers, and 3D Materials. Angew Chem Int Ed Engl 2024; 63:e202313379. [PMID: 37815889 DOI: 10.1002/anie.202313379] [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: 09/11/2023] [Revised: 10/08/2023] [Accepted: 10/10/2023] [Indexed: 10/12/2023]
Abstract
Covering an exceptionally wide range of bond strengths, the dynamic nature and facile tunability of dative B-N bonds is highly attractive when it comes to the assembly of supramolecular polymers and materials. This Minireview offers an overview of advances in the development of functional materials where Lewis pairs (LPs) play a key role in their assembly and critically influence their properties. Specifically, we describe the reversible assembly of linear polymers with interesting optical, electronic and catalytic properties, discrete macrocycles and molecular cages that take up diverse guest molecules and undergo structural changes triggered by external stimuli, covalent organic frameworks (COFs) with intriguing interlocked structures that can embed and separate gases such as CO2 and acetylene, and soft polymer networks that serve as recyclable, self-healing, and responsive thermosets, gels and elastomeric materials.
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Affiliation(s)
- Beijia Chen
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, NJ 07102, USA
| | - Frieder Jäkle
- Department of Chemistry, Rutgers University-Newark, 73 Warren Street, Newark, NJ 07102, USA
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7
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Wan B, Dong X, Yang X, Wang J, Zheng MS, Dang ZM, Chen G, Zha JW. Rising of Dynamic Polyimide Materials: A Versatile Dielectric for Electrical and Electronic Applications. ADVANCED MATERIALS (DEERFIELD BEACH, FLA.) 2023; 35:e2301185. [PMID: 36906511 DOI: 10.1002/adma.202301185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/07/2023] [Revised: 03/05/2023] [Indexed: 06/18/2023]
Abstract
Polyimides (PIs) are widely used in circuit components, electrical insulators, and power systems in modern electronic devices and large electrical appliances. Electrical/mechanical damage of materials are important factors that threaten reliability and service lifetime. Dynamic (self-healable, recyclable and degradable) PIs, a promising class of materials that successfully improve electrical/mechanical properties after damage, are anticipated to solve this issue. The viewpoints and perspectives on the status and future trends of dynamic PI based on a few existing documents are shared. The main damage forms of PI dielectric materials in the application process are first introduced, and initial strategies and schemes to solve these problems are proposed. Fundamentally, the bottleneck issues faced by the development of dynamic PIs are indicated, and the relationship between various damage forms and the universality of the method is evaluated. The potential mechanism of the dynamic PI to deal with electrical damage is highlighted and several feasible prospective schemes to address electrical damage are discussed. This study is concluded by presenting a short outlook and future improvements to systems, challenges, and solutions of dynamic PI in electrical insulation. The summary of theory and practice should encourage policy development favoring energy conservation and environmental protection and promoting sustainability.
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Affiliation(s)
- Baoquan Wan
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Shunde Graduate School of University of Science and Technology Beijing, Foshan, 528300, P. R. China
| | - Xiaodi Dong
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Shunde Graduate School of University of Science and Technology Beijing, Foshan, 528300, P. R. China
| | - Xing Yang
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Shunde Graduate School of University of Science and Technology Beijing, Foshan, 528300, P. R. China
| | - Jiangqiong Wang
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Shunde Graduate School of University of Science and Technology Beijing, Foshan, 528300, P. R. China
| | - Ming-Sheng Zheng
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Shunde Graduate School of University of Science and Technology Beijing, Foshan, 528300, P. R. China
| | - Zhi-Min Dang
- State Key Laboratory of Power System, Department of Electrical Engineering, Tsinghua University, Beijing, 100084, P. R. China
| | - George Chen
- Department of Electronics and Computer Science, University of Southampton, Southampton, SO17 1BJ, UK
| | - Jun-Wei Zha
- Beijing Advanced Innovation Center for Materials Genome Engineering, School of Chemistry and Biological Engineering, University of Science and Technology Beijing, Beijing, 100083, P. R. China
- Shunde Graduate School of University of Science and Technology Beijing, Foshan, 528300, P. R. China
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8
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Kariyawasam LS, Highmoore JF, Yang Y. Chemically Recyclable Dithioacetal Polymers via Reversible Entropy-Driven Ring-Opening Polymerization. Angew Chem Int Ed Engl 2023; 62:e202303039. [PMID: 36988027 DOI: 10.1002/anie.202303039] [Citation(s) in RCA: 10] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2023] [Revised: 03/27/2023] [Accepted: 03/28/2023] [Indexed: 03/30/2023]
Abstract
In a sustainable circular economy, polymers capable of chemical recycling to monomers are highly desirable. We report an efficient monomer-polymer recycling of polydithioacetal (PDTA). Pristine PDTAs were readily synthesized from 3,4,5-trimethoxybenzaldehyde and alkyl dithiols. They then exhibited depolymerizability via ring-closing depolymerization into macrocycles, followed by entropy-driven ring-opening polymerization (ED-ROP) to reform the virgin polymers. High conversions were obtained for both the forward and reverse reactions. Once crosslinked, the network exhibited thermal reprocessability enabled by acid-catalyzed dithioacetal exchange. The network retained the recyclability into macrocyclic monomers in solvent which can repolymerize to regenerate the crosslinked network. These results demonstrated PDTA as a new molecular platform for the design of recyclable polymers and the advantages of ED-ROP for which polymerization is favored at higher temperatures.
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Affiliation(s)
| | | | - Ying Yang
- Department of Chemistry, University of Nevada, Reno, Reno, NV 89557, USA
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9
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de Heer Kloots MHP, Schoustra SK, Dijksman JA, Smulders MMJ. Phase separation in supramolecular and covalent adaptable networks. SOFT MATTER 2023; 19:2857-2877. [PMID: 37060135 PMCID: PMC10131172 DOI: 10.1039/d3sm00047h] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 05/17/2023]
Abstract
Phase separation phenomena have been studied widely in the field of polymer science, and were recently also reported for dynamic polymer networks (DPNs). The mechanisms of phase separation in dynamic polymer networks are of particular interest as the reversible nature of the network can participate in the structuring of the micro- and macroscale domains. In this review, we highlight the underlying mechanisms of phase separation in dynamic polymer networks, distinguishing between supramolecular polymer networks and covalent adaptable networks (CANs). Also, we address the synergistic effects between phase separation and reversible bond exchange. We furthermore discuss the effects of phase separation on the material properties, and how this knowledge can be used to enhance and tune material properties.
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Affiliation(s)
- Martijn H P de Heer Kloots
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands.
- Physical Chemistry and Soft Matter, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
| | - Sybren K Schoustra
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands.
| | - Joshua A Dijksman
- Physical Chemistry and Soft Matter, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands
- Van der Waals-Zeeman Institute, Institute of Physics, University of Amsterdam, Science Park 904, 1098 XH Amsterdam, The Netherlands.
| | - Maarten M J Smulders
- Laboratory of Organic Chemistry, Wageningen University, Stippeneng 4, 6708 WE Wageningen, The Netherlands.
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10
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Huang J, Zhang X, Liu R, Ding Y, Guo D. Polyvinyl chloride-based dielectric elastomer with high permittivity and low viscoelasticity for actuation and sensing. Nat Commun 2023; 14:1483. [PMID: 36932099 PMCID: PMC10023783 DOI: 10.1038/s41467-023-37178-5] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 03/06/2023] [Indexed: 03/19/2023] Open
Abstract
Dielectric elastomers (DEs) are widely used in soft actuation and sensing. Current DE actuators require high driving electrical fields because of their low permittivity. Most of DE actuators and sensors suffer from high viscoelastic effects, leading to high mechanical loss and large shifts of signals. This study demonstrates a valuable strategy to produce polyvinyl chloride (PVC)-based elastomers with high permittivity and low viscoelasticity. The introduction of cyanoethyl cellulose (CEC) into plasticized PVC gel (PVCg) not only confers a high dielectric permittivity (18.9@1 kHz) but also significantly mitigates their viscoelastic effects with a low mechanical loss (0.04@1 Hz). The CEC/PVCg actuators demonstrate higher actuation performances over the existing DE actuators under low electrical fields and show marginal displacement shifts (7.78%) compared to VHB 4910 (136.09%). The CEC/PVCg sensors display high sensitivity, fast response, and limited signal drifts, enabling their faithful monitoring of multiple human motions.
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Affiliation(s)
- Jianjian Huang
- State Laboratory of Surface & Interface, Zhengzhou University of Light Industry, Zhengzhou, 450002, China
| | - Xiaodie Zhang
- State Laboratory of Surface & Interface, Zhengzhou University of Light Industry, Zhengzhou, 450002, China
| | - Ruixue Liu
- State Laboratory of Surface & Interface, Zhengzhou University of Light Industry, Zhengzhou, 450002, China
| | - Yonghui Ding
- Center for Advanced Regenerative Engineering, Department of Biomedical Engineering, Northwestern University, Evanston, IL, 60208, USA.
| | - Dongjie Guo
- State Laboratory of Surface & Interface, Zhengzhou University of Light Industry, Zhengzhou, 450002, China.
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11
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Wang H, Shi Z, Guo K, Wang J, Gong C, Xie X, Xue Z. Boronic Ester Transesterification Accelerates Ion Conduction for Comb-like Solid Polymer Electrolytes. Macromolecules 2023. [DOI: 10.1021/acs.macromol.2c02306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
Affiliation(s)
- Hongli Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhen Shi
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Kairui Guo
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Jirong Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Chunli Gong
- Hubei Collaborative Innovation Center for Biomass Conversion and Utilization, School of Chemistry and Material Science, Hubei Engineering University, Xiaogan 432000, Hubei, China
| | - Xiaolin Xie
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Zhigang Xue
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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12
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Meng H, Ye W, Wang C, Gao Z, Hu B, Wang C. Crystalline micro-nanoparticles enhance cross-linked hydrogels via a confined assembly of chitosan and γ-cyclodextrin. Carbohydr Polym 2022; 298:120145. [DOI: 10.1016/j.carbpol.2022.120145] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/01/2022] [Accepted: 09/20/2022] [Indexed: 11/02/2022]
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13
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Acciaretti F, Vesentini S, Cipolla L. Fabrication Strategies Towards Hydrogels for Biomedical Application: Chemical and Mechanical Insights. Chem Asian J 2022; 17:e202200797. [PMID: 36112345 PMCID: PMC9828515 DOI: 10.1002/asia.202200797] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Revised: 09/16/2022] [Indexed: 01/12/2023]
Abstract
This review aims at giving selected chemical and mechanical insights on design criteria that should be taken into account in hydrogel production for biomedical applications. Particular emphasis will be given to the chemical aspects involved in hydrogel design: macromer chemical composition, cross-linking strategies and chemistry towards "conventional" and smart/stimuli responsive hydrogels. Mechanical properties of hydrogels in view of regenerative medicine applications will also be considered.
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Affiliation(s)
- Federico Acciaretti
- Department of Biotechnology and BiosciencesUniversity of Milano – BicoccaPiazza della Scienza 220126MilanoItaly
| | - Simone Vesentini
- Department of ElectronicsInformation and BioengineeringPolitecnico di Milano (Italy)Piazza Leonardo da Vinci 3220133MilanoItaly
| | - Laura Cipolla
- Department of Biotechnology and BiosciencesUniversity of Milano – BicoccaPiazza della Scienza 220126MilanoItaly
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14
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Stretchable elastomers with self-healing and shape memory properties based on functionalized TMC and DLLA copolymers. J Mol Liq 2022. [DOI: 10.1016/j.molliq.2022.119800] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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von Szczepanski J, Danner PM, Opris DM. Self-Healable, Self-Repairable, and Recyclable Electrically Responsive Artificial Muscles. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2022; 9:e2202153. [PMID: 35657031 PMCID: PMC9353453 DOI: 10.1002/advs.202202153] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Indexed: 05/17/2023]
Abstract
Elastomers with high dielectric permittivity that self-heal after electric breakdown and mechanical damage are important in the emerging field of artificial muscles. Here, a one-step process toward self-healable, silicone-based elastomers with large and tunable permittivity is reported. Anionic ring-opening polymerization of cyanopropyl-substituted cyclic siloxanes yields elastomers with polar side chains. The equilibrated product is composed of networks, linear chains, and cyclic compounds. The ratio between the components varies with temperature and allows realizing materials with largely different properties. The silanolate end groups remain active, which is the key to self-healing. Elastomeric behavior is observed at room temperature, while viscous flow dominates at higher temperatures (typically 80 °C). The elasticity is essential for reversible actuation and the thermoreversible softening allows for self-healing and recycling. The dielectric permittivity can be increased to a maximum value of 18.1 by varying the polar group content. Single-layer actuators show 3.8% lateral actuation at 5.2 V µm-1 and self-repair after a breakdown, while damaged ones can be recycled integrally. Stack actuators reach an actuation strain of 5.4 ± 0.2% at electric fields as low as 3.2 V µm-1 and are therefore promising for applications as artificial muscles in soft robotics.
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Affiliation(s)
- Johannes von Szczepanski
- Laboratory for Functional Polymers, Swiss Federal Laboratories for Materials Science and Technology Empa, Ueberlandstr. 129, Dübendorf, 8600, Switzerland
- Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, Zurich, 8093, Switzerland
| | - Patrick M Danner
- Laboratory for Functional Polymers, Swiss Federal Laboratories for Materials Science and Technology Empa, Ueberlandstr. 129, Dübendorf, 8600, Switzerland
- Department of Materials, ETH Zurich, Vladimir-Prelog-Weg 5, Zurich, 8093, Switzerland
| | - Dorina M Opris
- Laboratory for Functional Polymers, Swiss Federal Laboratories for Materials Science and Technology Empa, Ueberlandstr. 129, Dübendorf, 8600, Switzerland
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16
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Cantamessa F, Damonte G, Monticelli O, Arrigo R, Fina A. Thermoreversible Cross-Linked Rubber Prepared via Melt Blending and Its Nanocomposites. ACS APPLIED POLYMER MATERIALS 2022; 4:4796-4807. [PMID: 35846782 PMCID: PMC9274616 DOI: 10.1021/acsapm.2c00416] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
A covalent adaptable network based on the thermoreversible cross-linking of an ethylene-propylene rubber through Diels-Alder (DA) reaction was prepared for the first time through melt blending as an environmental-friendly alternative to traditional synthesis in organic solvents. Functionalization of the rubber with furan groups was performed in a melt blender and subsequently mixed with different amounts of bismaleimide in a microextruder. Cross-linking was confirmed by FT-IR spectroscopy and insolubility at room temperature, while its thermoreversible character was confirmed by a solubility test at 110 °C and by remolding via hot-pressing. Mechanical and thermomechanical properties of the obtained rubbers showed potential to compete with conventionally cross-linked elastomers, with stiffness in the range 1-1.7 MPa and strain at break in the range 200-500%, while allowing recycling via a simple melt processing step. Nanocomposites based on the thermoreversible rubber were prepared with reduced graphene oxide (rGO), showing significantly increasing stiffness up to ca. 8 MPa, ∼2-fold increased strength, and thermal conductivity up to ∼0.5 W/(m K). Results in this paper may open for industrially viable and sustainable applications of thermoreversible elastomers.
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Affiliation(s)
- Francesco Cantamessa
- Dipartimento
di Scienza Applicata e Tecnologia, Politecnico
di Torino, 15121 Alessandria, Italy
| | - Giacomo Damonte
- Dipartimento
di Chimica e Chimica Industriale, Università
di Genova, 16146 Genova, Italy
| | - Orietta Monticelli
- Dipartimento
di Chimica e Chimica Industriale, Università
di Genova, 16146 Genova, Italy
| | - Rossella Arrigo
- Dipartimento
di Scienza Applicata e Tecnologia, Politecnico
di Torino, 15121 Alessandria, Italy
| | - Alberto Fina
- Dipartimento
di Scienza Applicata e Tecnologia, Politecnico
di Torino, 15121 Alessandria, Italy
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17
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Liu W, Huang J, Gong Z, Fan J, Chen Y. Healable, recyclable and mechanically robust elastomers with multiple dynamic cross-linking bonds. POLYMER 2022. [DOI: 10.1016/j.polymer.2022.124900] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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18
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Utrera-Barrios S, Verdejo R, López-Manchado MÁ, Santana MH. The Final Frontier of Sustainable Materials: Current Developments in Self-Healing Elastomers. Int J Mol Sci 2022; 23:4757. [PMID: 35563147 PMCID: PMC9101787 DOI: 10.3390/ijms23094757] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 04/24/2022] [Indexed: 02/01/2023] Open
Abstract
It is impossible to describe the recent progress of our society without considering the role of polymers; however, for a broad audience, "polymer" is usually related to environmental pollution. The poor disposal and management of polymeric waste has led to an important environmental crisis, and, within polymers, plastics have attracted bad press despite being easily reprocessable. Nonetheless, there is a group of polymeric materials that is particularly more complex to reprocess, rubbers. These macromolecules are formed by irreversible crosslinked networks that give them their characteristic elastic behavior, but at the same time avoid their reprocessing. Conferring them a self-healing capacity stands out as a decisive approach for overcoming this limitation. By this mean, rubbers would be able to repair or restore their damage automatically, autonomously, or by applying an external stimulus, increasing their lifetime, and making them compatible with the circular economy model. Spain is a reference country in the implementation of this strategy in rubbery materials, achieving successful self-healable elastomers with high healing efficiency and outstanding mechanical performance. This article presents an exhaustive summary of the developments reported in the previous 10 years, which demonstrates that this property is the last frontier in search of truly sustainable materials.
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Affiliation(s)
| | | | - Miguel Ángel López-Manchado
- Institute of Polymer Science and Technology (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain; (S.U.-B.); (R.V.)
| | - Marianella Hernández Santana
- Institute of Polymer Science and Technology (ICTP-CSIC), Juan de la Cierva 3, 28006 Madrid, Spain; (S.U.-B.); (R.V.)
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19
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Yan X, Chen Q, Huo Z, Zhang N, Ma M. Programmable Multistimuli-Responsive and Multimodal Polymer Actuator Based on a Designed Energy Transduction Network. ACS APPLIED MATERIALS & INTERFACES 2022; 14:13768-13777. [PMID: 35262326 DOI: 10.1021/acsami.2c01549] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
A polymer actuator typically responds to only one or two types of stimuli, where sensing and actuation are simultaneously exerted by the same responsive polymer. In cells, sensing and actuation are exerted separately by different biomolecules, which are integrated into nanoscale assemblies to construct the signaling network, making cells a multistimuli responsive and multimodal system. Inspired by the structure-function relationship of the signaling network in cells, we have developed a strategy to select and assemble proper functional polymers into assemblies, where sensing and actuation are exerted by different polymers, and the assemblies can present novel functions beyond that of each polymer component. Three polymers [polyaniline, PANi; poly(N-isopropylacrylamide), PNIPAm; and polydimethylsiloxane, PDMS] are integrated as nodes into a simple energy transduction network, which can be regulated by three molecular factors (pH, kosmotropic anions, and polyethylene glycol). PANi converts the light or electric stimulus into heat, which triggers the actuation of PNIPAm and PDMS. Relying on this energy transduction network, the polymer assembly can respond to six types of stimuli (light, electricity, temperature, water, ions, and organic solvents) and perform different actuation modes, serving as a powerful actuator. Programmable complex deformation upon multiple simultaneous or sequential stimuli has also been achieved by this actuator. An adaptive gripper to catch thin objects and a self-regulating switch to maintain environmental humidity illustrate the wide potential of this actuator for next-generation smart materials and soft robots.
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Affiliation(s)
- Xiunan Yan
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Qing Chen
- Deutsches Elektronen-Synchrotron, Hamburg 22607, Germany
| | - Ziyu Huo
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
| | - Ning Zhang
- School of Biology, Food and Environment, Hefei University, Hefei, Anhui 230601, China
| | - Mingming Ma
- Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, China
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20
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Hu X, Zhang R, Wemyss AM, Du A, Bao X, Geng X, Wan C. Damping and Electromechanical Behavior of Ionic-Modified Brominated Poly(isobutylene-co-isoprene) Rubber Containing Petroleum Resin C5. Ind Eng Chem Res 2022. [DOI: 10.1021/acs.iecr.1c04790] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiao Hu
- International Institute for Nanocomposites Manufacturing, WMG, University of Warwick, Coventry CV4 7AL, U.K
- School of Engineering, University of Warwick, Coventry CV4 7AL, U.K
| | - Runan Zhang
- Department of Mechanical Engineering, University of Bath, Bath BA2 7AY, U.K
| | - Alan M. Wemyss
- International Institute for Nanocomposites Manufacturing, WMG, University of Warwick, Coventry CV4 7AL, U.K
| | - Aihua Du
- Key Lab of Rubber-Plastics, Ministry of Education, Qingdao University of Science and Technology, Qingdao 266042, China
| | - Xujin Bao
- Department of Materials, Loughborough University, Loughborough LE11 3TU, U.K
| | - Xueyu Geng
- School of Engineering, University of Warwick, Coventry CV4 7AL, U.K
| | - Chaoying Wan
- International Institute for Nanocomposites Manufacturing, WMG, University of Warwick, Coventry CV4 7AL, U.K
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21
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Bele A, Dascalu M, Tugui C, Stiubianu G, Varganici C, Racles C, Cazacu M, Skov AL. Soft silicone elastomers exhibiting large actuation strains. J Appl Polym Sci 2022. [DOI: 10.1002/app.52261] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Adrian Bele
- Department of Inorganic Polymers “Petru Poni” Institute of Macromolecular Chemistry Grigore Ghica Voda Alley, 41 A Iasi Romania
| | - Mihaela Dascalu
- Department of Inorganic Polymers “Petru Poni” Institute of Macromolecular Chemistry Grigore Ghica Voda Alley, 41 A Iasi Romania
| | - Codrin Tugui
- Department of Inorganic Polymers “Petru Poni” Institute of Macromolecular Chemistry Grigore Ghica Voda Alley, 41 A Iasi Romania
| | - George‐Theodor Stiubianu
- Department of Inorganic Polymers “Petru Poni” Institute of Macromolecular Chemistry Grigore Ghica Voda Alley, 41 A Iasi Romania
| | - Cristian‐Dragos Varganici
- Centre of Advanced Research in Bionanoconjugates and Biopolymers “Petru Poni” Institute of Macromolecular Chemistry Grigore Ghica Voda Alley, 41 A Iasi Romania
| | - Carmen Racles
- Department of Inorganic Polymers “Petru Poni” Institute of Macromolecular Chemistry Grigore Ghica Voda Alley, 41 A Iasi Romania
| | - Maria Cazacu
- Department of Inorganic Polymers “Petru Poni” Institute of Macromolecular Chemistry Grigore Ghica Voda Alley, 41 A Iasi Romania
| | - Anne Ladegaard Skov
- Department of Chemical and Biochemical Engineering Danish Polymer Centre, Technical University of Denmark Kgs. Lyngby Denmark
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22
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Vidil T, Llevot A. Fully Biobased Vitrimers: Future Direction Towards Sustainable Cross‐Linked Polymers. MACROMOL CHEM PHYS 2022. [DOI: 10.1002/macp.202100494] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Thomas Vidil
- University of Bordeaux CNRS Bordeaux INP Laboratoire de Chimie des Polymères Organiques UMR 5629, ENSCBP, 16 avenue Pey‐Berland Pessac cedex F‐33607 France
| | - Audrey Llevot
- University of Bordeaux CNRS Bordeaux INP Laboratoire de Chimie des Polymères Organiques UMR 5629, ENSCBP, 16 avenue Pey‐Berland Pessac cedex F‐33607 France
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23
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Danner PM, Iacob M, Sasso G, Burda I, Rieger B, Nüesch F, Opris DM. Solvent-free synthesis and processing of conductive elastomer composites for "green" dielectric elastomer transducers. Macromol Rapid Commun 2022; 43:e2100823. [PMID: 35084072 DOI: 10.1002/marc.202100823] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 01/24/2022] [Indexed: 11/10/2022]
Abstract
Stretchable electrodes are the more suitable for dielectric elastomer transducers (DET), the closer the mechanical characteristics of electrodes and elastomer are. Here, we present a solvent-free synthesis and processing of conductive composites with excellent electrical and mechanical properties for transducers. The composites are prepared by in-situ polymerization of cyclosiloxane monomers in the presence of graphene nanoplatelets. The low viscosity of the monomer allows for easy dispersion of the filler, eliminating the need for a solvent. After the polymerization, a cross-linking agent is added at room temperature, the composite is solvent-free screen-printed, and the cross-linking reaction is initiated by heating. The best material shows conductivity σ = 8.2 S∙cm-1 , Young's modulus Y10% = 167 kPa, and strain at break s = 305%. The electrode withstands large uniaxial strains without delamination, shows no conductivity losses during repeated operation for 500 000 cycles, and has an excellent recovery of electrical properties upon being stretched at strains of up to 180%. Reliable prototype capacitive sensors and stack actuators are manufactured by screen-printing the conductive composite on the dielectric film. Finally, stack actuators manufactured from dielectric and conductive materials that are synthesized solvent-free are demonstrated. The stack actuators even self-repair after a breakdown event. This article is protected by copyright. All rights reserved.
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Affiliation(s)
- Patrick M Danner
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, Dübendorf, CH-8600, Switzerland.,Wacker-Chair of Macromolecular Chemistry, Catalysis Research Center, Department of Chemistry, Technical University of Munich, Garching, 85748, Germany.,Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, Zurich, CH-8093, Switzerland
| | - Mihail Iacob
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, Dübendorf, CH-8600, Switzerland
| | - Giacomo Sasso
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, Dübendorf, CH-8600, Switzerland
| | - Iurii Burda
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Mechanical Systems Engineering, Ueberlandstr. 129, Dübendorf, CH-8600, Switzerland
| | - Bernhard Rieger
- Wacker-Chair of Macromolecular Chemistry, Catalysis Research Center, Department of Chemistry, Technical University of Munich, Garching, 85748, Germany
| | - Frank Nüesch
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, Dübendorf, CH-8600, Switzerland.,Ecole Polytechnique Fédérale de Lausanne (EPFL), Institut des Matériaux, Station 12, Lausanne, CH-1015, Switzerland
| | - Dorina M Opris
- Swiss Federal Laboratories for Materials Science and Technology Empa, Laboratory for Functional Polymers, Ueberlandstr. 129, Dübendorf, CH-8600, Switzerland.,Department of Materials, ETH Zürich, Vladimir-Prelog-Weg 5, Zurich, CH-8093, Switzerland
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24
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Haddleton D, Efstathiou S, Ma C, Coursari D, Patias G, Al-Shok L, Eissa AM. Functional pH-responsive polymers containing dynamic enaminone linkages for the release of active organic amines. Polym Chem 2022. [DOI: 10.1039/d2py00167e] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Dynamic covalent bonds have attracted attention for the development of pH-responsive polymers, however, studies using acid-cleavable enaminone linkages as a means of controlled drug release have been limited. Herein, we...
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25
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Faseela KP, Benny AP, Kim Y, Baik S. Highly Conductive Strong Healable Nanocomposites via Diels-Alder Reaction and Filler-Polymer Covalent Bifunctionalization. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2022; 18:e2104764. [PMID: 34761523 DOI: 10.1002/smll.202104764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/27/2021] [Indexed: 06/13/2023]
Abstract
Healable stretchable conductive nanocomposites have received considerable attention. However, there has been a trade-off between the filler-induced electrical conductivity (σ) and polymer-driven mechanical strength. Here significant enhancements in both σ and mechanical strength by designing reversible covalent bonding of the polymer matrix and filler-matrix covalent bifunctionalization are reported. A polystyrene-block-poly(ethylene-ran-butylene)-block-polystyrene grafted with maleic anhydride forms the strong reversible covalent bonding with furfuryl alcohol through the Diels-Alder reaction. Small (7.5 nm) and medium (117 nm) nanosatellite particles are generated by in situ etching of silver flakes, enabling electron tunneling-assisted percolation. The filler-polymer covalent bifunctionalization is achieved by 3-mercaptopropanoic acid. Altogether, this results in high σ (108 300 S m-1 ) and tensile strength (16.4 MPa), breaking the trade-off behavior. A nearly perfect (≈100%) healing efficiency is achieved in both σ and tensile strength. The conductive nanocomposite figure of merit (1.78 T Pa S m-1 ), defined by the product of σ and tensile strength, is orders of magnitude greater than the data in literature. The nanocomposite may find applications in healable strain sensors and electronic materials.
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Affiliation(s)
- K P Faseela
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Aby Paul Benny
- Department of Energy Science, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Yongjun Kim
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
| | - Seunghyun Baik
- School of Mechanical Engineering, Sungkyunkwan University, Suwon, 16419, Republic of Korea
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26
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Suárez-Picado E, Coste M, Runser JY, Fossépré M, Carvalho A, Surin M, Jierry L, Ulrich S. Hierarchical Self-Assembly and Multidynamic Responsiveness of Fluorescent Dynamic Covalent Networks Forming Organogels. Biomacromolecules 2021; 23:431-442. [PMID: 34910463 DOI: 10.1021/acs.biomac.1c01389] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Smart stimuli-responsive fluorescent materials are of interest in the context of sensing and imaging applications. In this project, we elaborated multidynamic fluorescent materials made of a tetraphenylethene fluorophore displaying aggregation-induced emission and short cysteine-rich C-hydrazide peptides. Specifically, we show that a hierarchical dynamic covalent self-assembly process, combining disulfide and acyl-hydrazone bond formation operating simultaneously in a one-pot reaction, yields cage compounds at low concentration (2 mM), while soluble fluorescent dynamic covalent networks and even chemically cross-linked fluorescent organogels are formed at higher concentrations. The number of cysteine residues in the peptide sequence impacts directly the mechanical properties of the resulting organogels, Young's moduli varying 2500-fold across the series. These materials underpinned by a nanofibrillar network display multidynamic responsiveness following concentration changes, chemical triggers, as well as light irradiation, all of which enable their controlled degradation with concomitant changes in spectroscopic outputs─self-assembly enhances fluorescence emission by ca. 100-fold and disassembly quenches fluorescence emission.
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Affiliation(s)
- Esteban Suárez-Picado
- Institut des Biomolécules Max Mousseron (IBMM), CNRS, Université of Montpellier, ENSCM, 34090 Montpellier, France
| | - Maëva Coste
- Institut des Biomolécules Max Mousseron (IBMM), CNRS, Université of Montpellier, ENSCM, 34090 Montpellier, France
| | - Jean-Yves Runser
- Université de StrasbourgCNRS, Institut Charles Sadron, 67034 Strasbourg, France
| | - Mathieu Fossépré
- Laboratory for Chemistry of Novel Materials, Center of Innovation and Research in Materials and Polymers, University of Mons-UMONS, 7000 Mons, Belgium
| | - Alain Carvalho
- Université de StrasbourgCNRS, Institut Charles Sadron, 67034 Strasbourg, France
| | - Mathieu Surin
- Laboratory for Chemistry of Novel Materials, Center of Innovation and Research in Materials and Polymers, University of Mons-UMONS, 7000 Mons, Belgium
| | - Loïc Jierry
- Université de StrasbourgCNRS, Institut Charles Sadron, 67034 Strasbourg, France
| | - Sébastien Ulrich
- Institut des Biomolécules Max Mousseron (IBMM), CNRS, Université of Montpellier, ENSCM, 34090 Montpellier, France
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27
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Zhou Q, Sang Z, Rajagopalan KK, Sliozberg Y, Gardea F, Sukhishvili SA. Thermodynamics and Stereochemistry of Diels–Alder Polymer Networks: Role of Crosslinker Flexibility and Crosslinking Density. Macromolecules 2021. [DOI: 10.1021/acs.macromol.1c01662] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Qing Zhou
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Zhen Sang
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Kartik Kumar Rajagopalan
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
| | - Yelena Sliozberg
- Weapons and Materials Research Directorate, DEVCOM Army Research Laboratory, Aberdeen Proving Ground, Maryland 21005, United States
| | - Frank Gardea
- Weapons and Materials Research Directorate, DEVCOM Army Research Laboratory South, College Station, Texas 77843, United States
| | - Svetlana A. Sukhishvili
- Department of Materials Science & Engineering, Texas A&M University, College Station, Texas 77843, United States
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28
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Wemyss AM, Ellingford C, Morishita Y, Bowen C, Wan C. Dynamic Polymer Networks: A New Avenue towards Sustainable and Advanced Soft Machines. Angew Chem Int Ed Engl 2021; 60:13725-13736. [PMID: 33411416 PMCID: PMC8248167 DOI: 10.1002/anie.202013254] [Citation(s) in RCA: 27] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2020] [Revised: 12/07/2020] [Indexed: 12/11/2022]
Abstract
While the fascinating field of soft machines has grown rapidly over the last two decades, the materials they are constructed from have remained largely unchanged during this time. Parallel activities have led to significant advances in the field of dynamic polymer networks, leading to the design of three-dimensionally cross-linked polymeric materials that are able to adapt and transform through stimuli-induced bond exchange. Recent work has begun to merge these two fields of research by incorporating the stimuli-responsive properties of dynamic polymer networks into soft machine components. These include dielectric elastomers, stretchable electrodes, nanogenerators, and energy storage devices. In this Minireview, we outline recent progress made in this emerging research area and discuss future directions for the field.
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Affiliation(s)
- Alan M Wemyss
- International Institute for Nanocomposites Manufacturing (IINM)WMGUniversity of WarwickCoventryCV4 7ALUK
| | - Christopher Ellingford
- International Institute for Nanocomposites Manufacturing (IINM)WMGUniversity of WarwickCoventryCV4 7ALUK
| | - Yoshihiro Morishita
- Core Technology Research DepartmentAdvanced Materials DivisionBridgestone CorporationJapan
| | - Chris Bowen
- Department of Mechanical EngineeringUniversity of BathBathBA2 7AYUK
| | - Chaoying Wan
- International Institute for Nanocomposites Manufacturing (IINM)WMGUniversity of WarwickCoventryCV4 7ALUK
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29
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Application and Suitability of Polymeric Materials as Insulators in Electrical Equipment. ENERGIES 2021. [DOI: 10.3390/en14102758] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In this paper, the applications of thermoplastic, thermoset polymers, and a brief description of the functions of each subsystem are reviewed. The synthetic route and characteristics of polymeric materials are presented. The mechanical properties of polymers such as impact behavior, tensile test, bending test, and thermal properties like mold stress-relief distortion, generic thermal indices, relative thermal capability, and relative thermal index are mentioned. Furthermore, this paper covers the electrical behavior of polymers, mainly their dielectric strength. Different techniques for evaluating polymers’ suitability applied for electrical insulation are covered, such as partial discharge and high current arc resistance to ignition. The polymeric materials and processes used for manufacturing cables at different voltage ranges are described, and their applications to high voltage DC systems (HVDC) are discussed. The evolution and limitations of polymeric materials for electrical application and their advantages and future trends are mentioned. However, to reduce the high cost of filler networks and improve their technical properties, new techniques need to be developed. To overcome limitations associated with the accuracy of the techniques used for quantifying residual stresses in polymers, new techniques such as indentation are used with higher force at the stressed location.
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