51
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Cuminet F, Caillol S, Dantras É, Leclerc É, Ladmiral V. Neighboring Group Participation and Internal Catalysis Effects on Exchangeable Covalent Bonds: Application to the Thriving Field of Vitrimer Chemistry. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c02706] [Citation(s) in RCA: 29] [Impact Index Per Article: 9.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
| | | | - Éric Dantras
- CIRIMAT Physique des Polymères, Université de Toulouse, CNRS, Université Toulouse 3 - Paul Sabatier, 118 Route de Narbonne, 31062 Toulouse, France
| | - Éric Leclerc
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
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52
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Fugolin APP, Costa AR, Lewis SH, Goulart M, Erhardt MC, Pfeifer CS. Probing stress relaxation behavior in glassy methacrylate networks containing thio-carbamate additives. J Mater Chem B 2021; 9:3015-3024. [PMID: 33885663 PMCID: PMC8062791 DOI: 10.1039/d1tb00176k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The incorporation of thiourethane prepolymer (TU) into either the organic phase or as a surface treatment for filler particles in composites reduces polymerization stress and improves fracture toughness. The aim of this study was to gain insight into the influence of the inclusion of thiourethanes on the resulting network of methacrylate-based materials polymerized via free-radical mechanisms. Dynamic mechanical analysis was used to elucidate network parameters and potential stress relaxation behavior of these networks. TU oligomers were synthesized using a combination of trimethylol-tris-3-mercaptopropionate and dicyclohexylmethane 4,4'-diisocyanate and added into composite formulations at 20 wt% replacing part of the organic matrix and/or as TU-silanes used to functionalize filler particles (TU-matrix, TU-Sil or TU-matrix/sil). Materials not containing any form of TU were used as the control (in those cases, 3-(trimethoxysilyl)propyl methacrylate was used as the silane agent). Filler was added at 50 wt%. Degree of conversion was evaluated by near-IR spectroscopy, mechanical properties by 3-point bending and rotational rheometry. Dynamic mechanical analysis was used to obtain network parameters (glass transition temperature (Tg), storage modulus, cross-link density, and breadth of tan delta a proxy for network homogeneity - temperature sweep experiments) and to evaluate the potential for network relaxation (stress relaxation). TU-containing formulations showed 10% higher DC than the control. The time to reach storage/loss modulus crossover in the rheometer experiments was significantly longer for TU-matrix and TU-matrix/sil in comparison with the control (21.6, 27.9, and 5.1 s, respectively). TU-matrix and TU-matrix/sil presented significant lower Tg than the control (151.5, 153.8, and 161.3 °C, respectively). There were no statistical differences among the groups in terms of shear modulus, cross-link density, breadth of tan delta, flexural strength/modulus, and toughness. For at least one group (TU-matrix/sil), the relaxation time was four times faster than for the control at 105 °C. The addition of TU additives into dental polymers resulted in a stark reduction in the stress relaxation time. This behavior, in tandem with the network characterization and mechanical properties seems to indicate the TU networks undergo a variety of reversible associative and dissociative chemical reactions which facilitate enhanced stress relief.
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Affiliation(s)
- A P P Fugolin
- Oregon Health & Science University, Biomaterials and Biomechanics, Oregon Health & Science University, 2730 SW Moody Ave, 6N036, Portland, OR, USA.
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53
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Fugolin APP, Costa AR, Correr-Sobrinho L, Crystal Chaw R, Lewis S, Ferracane JL, Pfeifer CS. Toughening and polymerization stress control in composites using thiourethane-treated fillers. Sci Rep 2021; 11:7638. [PMID: 33828183 PMCID: PMC8027886 DOI: 10.1038/s41598-021-87151-9] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2021] [Accepted: 03/22/2021] [Indexed: 12/12/2022] Open
Abstract
Filler particle functionalization with thiourethane oligomers has been shown to increase fracture toughness and decrease polymerization stress in dental composites, though the mechanism is poorly understood. The aim of this study was to systematically characterize the effect of the type of filler surface functionalization on the physicochemical properties of experimental resin composites containing fillers of different size and volume fraction. Barium glass fillers (1, 3 and 10 µm) were functionalized with 2 wt% thiourethane-silane (TU-Sil) synthesized de novo and characterized by thermogravimetric analysis. Fillers treated with 3-(Trimethoxysilyl)propyl methacrylate (MA-Sil) and with no surface treatment (No-Sil) served as controls. Fillers (50, 60 and 70 wt%) were incorporated into BisGMA-UDMA-TEGDMA (5:3:2) containing camphorquinone/ethyl-4-dimethylaminobenzoate (0.2/0.8 wt%) and 0.2 wt% di-tert-butyl hydroxytoluene. The functionalized particles were characterized by thermogravimetric analysis and a representative group was tagged with methacrylated rhodamine B and analyzed by confocal laser scanning microscopy. Polymerization kinetics were assessed by near-IR spectroscopy. Polymerization stress was tested in a cantilever system, and fracture toughness was assessed with single edge-notched beams. Fracture surfaces were characterized by SEM. Data were analyzed with ANOVA/Tukey's test (α = 0.05). The grafting of thiourethane oligomer onto the surface of the filler particles led to reductions in polymerization stress ranging between 41 and 54%, without affecting the viscosity of the composite. Fracture toughness increased on average by 35% for composites with the experimental fillers compared with the traditional methacrylate-silanized groups. SEM and confocal analyses demonstrate that the coverage of the filler surface was not homogeneous and varied with the size of the filler. The average silane layer for the 1 µm particle functionalized with the thiourethane was 206 nm, much thicker than reported for traditional silanes. In summary, this study systematically characterized the silane layer and established structure–property relationships for methacrylate and thiourethane silane-containing materials. The results demonstrate that significant stress reductions and fracture toughness increases are obtained by judiciously tailoring the organic–inorganic interface in dental composites.
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Affiliation(s)
- Ana Paula Piovezan Fugolin
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, Oregon Health & Science University, Portland, OR, USA
| | - Ana Rosa Costa
- Division of Dental Materials, Department of Restorative Dentistry, Piracicaba Dental School-UNICAMP, Piracicaba, SP, Brazil
| | - Lourenco Correr-Sobrinho
- Division of Dental Materials, Department of Restorative Dentistry, Piracicaba Dental School-UNICAMP, Piracicaba, SP, Brazil
| | - R Crystal Chaw
- Advanced Light Microscopy Core, Department of Neurology, Oregon Health & Science University, Portland, OR, USA
| | - Steven Lewis
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, Oregon Health & Science University, Portland, OR, USA
| | - Jack Liborio Ferracane
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, Oregon Health & Science University, Portland, OR, USA
| | - Carmem Silvia Pfeifer
- Division of Biomaterials and Biomechanics, Department of Restorative Dentistry, Oregon Health & Science University, Portland, OR, USA.
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54
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Hu J, Yang R, Zhang L, Chen Y, Sheng X, Zhang X. Robust, transparent, and self-healable polyurethane elastomer via dynamic crosslinking of phenol-carbamate bonds. POLYMER 2021. [DOI: 10.1016/j.polymer.2021.123674] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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55
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Aguirresarobe RH, Nevejans S, Reck B, Irusta L, Sardon H, Asua JM, Ballard N. Healable and self-healing polyurethanes using dynamic chemistry. Prog Polym Sci 2021. [DOI: 10.1016/j.progpolymsci.2021.101362] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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56
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Zhang Q, Wang S, Rao B, Chen X, Ma L, Cui C, Zhong Q, Li Z, Cheng Y, Zhang Y. Hindered urea bonds for dynamic polymers: An overview. REACT FUNCT POLYM 2021. [DOI: 10.1016/j.reactfunctpolym.2020.104807] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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57
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Hammer L, Van Zee NJ, Nicolaÿ R. Dually Crosslinked Polymer Networks Incorporating Dynamic Covalent Bonds. Polymers (Basel) 2021; 13:396. [PMID: 33513741 PMCID: PMC7865237 DOI: 10.3390/polym13030396] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Revised: 01/23/2021] [Accepted: 01/25/2021] [Indexed: 12/21/2022] Open
Abstract
Covalent adaptable networks (CANs) are polymeric networks containing covalent crosslinks that are dynamic under specific conditions. In addition to possessing the malleability of thermoplastics and the dimensional stability of thermosets, CANs exhibit a unique combination of physical properties, including adaptability, self-healing, shape-memory, stimuli-responsiveness, and enhanced recyclability. The physical properties and the service conditions (such as temperature, pH, and humidity) of CANs are defined by the nature of their constituent dynamic covalent bonds (DCBs). In response to the increasing demand for more sophisticated and adaptable materials, the scientific community has identified dual dynamic networks (DDNs) as a promising new class of polymeric materials. By combining two (or more) distinct crosslinkers in one system, a material with tailored thermal, rheological, and mechanical properties can be designed. One remarkable ability of DDNs is their capacity to combine dimensional stability, bond dynamicity, and multi-responsiveness. This review aims to give an overview of the advances in the emerging field of DDNs with a special emphasis on their design, structure-property relationships, and applications. This review illustrates how DDNs offer many prospects that single (dynamic) networks cannot provide and highlights the challenges associated with their synthesis and characterization.
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Affiliation(s)
| | | | - Renaud Nicolaÿ
- Chimie Moléculaire, Macromoléculaire, Matériaux, ESPCI Paris, CNRS, Université PSL, 10 rue Vauquelin, 75005 Paris, France; (L.H.); (N.J.V.Z.)
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58
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Li L, Chen X, Jin K, Rusayyis MB, Torkelson JM. Arresting Elevated-Temperature Creep and Achieving Full Cross-Link Density Recovery in Reprocessable Polymer Networks and Network Composites via Nitroxide-Mediated Dynamic Chemistry. Macromolecules 2021. [DOI: 10.1021/acs.macromol.0c01691] [Citation(s) in RCA: 24] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lingqiao Li
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Xi Chen
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Kailong Jin
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - Mohammed Bin Rusayyis
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
| | - John M. Torkelson
- Department of Chemical and Biological Engineering, Northwestern University, Evanston, Illinois 60208, United States
- Department of Materials Science and Engineering, Northwestern University, Evanston, Illinois 60208, United States
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59
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Zheng N, Xu Y, Zhao Q, Xie T. Dynamic Covalent Polymer Networks: A Molecular Platform for Designing Functions beyond Chemical Recycling and Self-Healing. Chem Rev 2021; 121:1716-1745. [DOI: 10.1021/acs.chemrev.0c00938] [Citation(s) in RCA: 247] [Impact Index Per Article: 82.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ning Zheng
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People’s Republic of China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, People’s Republic of China
- Center for Chemistry of High-Performance and Novel Materials, Department of Chemistry, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People’s Republic of China
| | - Yang Xu
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People’s Republic of China
| | - Qian Zhao
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People’s Republic of China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, People’s Republic of China
| | - Tao Xie
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 38 Zheda Road, Hangzhou, 310027, People’s Republic of China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, Hangzhou, 311215, People’s Republic of China
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60
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Lewis S, APP F, Lam S, Scanlon C, Ferracane J, Pfeifer C. Effects of systematically varied thiourethane-functionalized filler concentration on polymerization behavior and relevant clinical properties of dental composites. MATERIALS & DESIGN 2021; 197:109249. [PMID: 33162633 PMCID: PMC7641517 DOI: 10.1016/j.matdes.2020.109249] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Introduction of thiourethane (TU) oligomer to resin-based dental restorative materials reduces stress and improves fracture toughness without compromising conversion. Localization of TU at the resin-filler interface via silanization procedures may lead to more substantial stress reduction and clinical property enhancements. The objective of this study was to evaluate composite properties as a function of TU-functionalized filler concentration. TU oligomers were synthesized using click-chemistry techniques and subsequently silanized to barium glass filler. Resin-based composites were formulated using varying ratios of TU-functionalized filler and conventional methacrylate-silanized barium filler. Material property testing included thermogravimetric analysis, real-time polymerization kinetics and depth of cure, polymerization stress, stress relaxation and fracture toughness. Clinical property testing included water sorption/solubility, composite paste viscosity, and gloss and surface roughness measured before and after subjecting the samples to 6 h of continuous tooth brushing in a custom-built apparatus using a toothpaste/water mixture. Increasing TU-filler in the composite resulted in as much as a 78% reduction in stress, coupled with an increase in fracture toughness. Conversion was similar for all groups. After simulated tooth brushing, gloss reduction was lower for TU-containing composites and surface roughness was less than or equal to the control.
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Affiliation(s)
- S.H. Lewis
- Oregon Health & Science University, Department of Restorative Dentistry, Biomaterials and Biomechanics, United States of America
| | - Fugolin APP
- Oregon Health & Science University, Department of Restorative Dentistry, Biomaterials and Biomechanics, United States of America
| | - S. Lam
- Apprenticeships in Science and Engineering (ASE, Saturday Academy), United States of America
| | - C. Scanlon
- Oregon Health & Science University, Department of Restorative Dentistry, Biomaterials and Biomechanics, United States of America
| | - J.L. Ferracane
- Oregon Health & Science University, Department of Restorative Dentistry, Biomaterials and Biomechanics, United States of America
| | - C.S. Pfeifer
- Oregon Health & Science University, Department of Restorative Dentistry, Biomaterials and Biomechanics, United States of America
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61
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Shi J, Zheng T, Zhang Y, Guo B, Xu J. Cross-linked polyurethane with dynamic phenol-carbamate bonds: properties affected by the chemical structure of isocyanate. Polym Chem 2021. [DOI: 10.1039/d1py00157d] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Based on the phenol–carbamate dynamic bond, we designed a strategy to regulate the rearrangement kinetics of the dynamic covalent network in polyurethanes by adjusting the chemical structure of aliphatic isocyanates.
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Affiliation(s)
- Jiaxin Shi
- Advanced Materials Laboratory of Ministry of Education (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing
- China
| | - Tianze Zheng
- Advanced Materials Laboratory of Ministry of Education (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing
- China
| | - Yao Zhang
- Advanced Materials Laboratory of Ministry of Education (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing
- China
| | - Baohua Guo
- Advanced Materials Laboratory of Ministry of Education (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing
- China
| | - Jun Xu
- Advanced Materials Laboratory of Ministry of Education (MOE)
- Department of Chemical Engineering
- Tsinghua University
- Beijing
- China
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62
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Bin Rusayyis MA, Torkelson JM. Reprocessable covalent adaptable networks with excellent elevated-temperature creep resistance: facilitation by dynamic, dissociative bis(hindered amino) disulfide bonds. Polym Chem 2021. [DOI: 10.1039/d1py00187f] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
BiTEMPS dynamic chemistry offers a simple method to prepare reprocessable polymer networks with excellent long-term creep resistance at elevated temperatures and full recovery of cross-link density after recycling.
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Affiliation(s)
| | - John M. Torkelson
- Department of Materials Science and Engineering
- Northwestern University
- Evanston
- USA
- Department of Chemical and Biological Engineering
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63
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Luo J, Rauch M, Avram L, Ben-David Y, Milstein D. Catalytic Hydrogenation of Thioesters, Thiocarbamates, and Thioamides. J Am Chem Soc 2020; 142:21628-21633. [PMID: 33332968 PMCID: PMC7775745 DOI: 10.1021/jacs.0c10884] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Direct hydrogenation of thioesters with H2 provides a facile and waste-free method to access alcohols and thiols. However, no report of this reaction is documented, possibly because of the incompatibility of the generated thiol with typical hydrogenation catalysts. Here, we report an efficient and selective hydrogenation of thioesters. The reaction is catalyzed by an acridine-based ruthenium complex without additives. Various thioesters were fully hydrogenated to the corresponding alcohols and thiols with excellent tolerance for amide, ester, and carboxylic acid groups. Thiocarbamates and thioamides also undergo hydrogenation under similar conditions, substantially extending the application of hydrogenation of organosulfur compounds.
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64
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Dennis JM, Savage AM, Mrozek RA, Lenhart JL. Stimuli‐responsive mechanical properties in polymer glasses: challenges and opportunities for defense applications. POLYM INT 2020. [DOI: 10.1002/pi.6154] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Joseph M Dennis
- United States Army Research Laboratory Aberdeen Proving Ground Adelphi MD USA
| | - Alice M Savage
- United States Army Research Laboratory Aberdeen Proving Ground Adelphi MD USA
| | - Randy A Mrozek
- United States Army Research Laboratory Aberdeen Proving Ground Adelphi MD USA
| | - Joseph L Lenhart
- United States Army Research Laboratory Aberdeen Proving Ground Adelphi MD USA
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65
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Gamardella F, Muñoz S, De la Flor S, Ramis X, Serra A. Recyclable Organocatalyzed Poly(Thiourethane) Covalent Adaptable Networks. Polymers (Basel) 2020; 12:E2913. [PMID: 33291704 PMCID: PMC7761908 DOI: 10.3390/polym12122913] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2020] [Revised: 11/28/2020] [Accepted: 12/02/2020] [Indexed: 11/24/2022] Open
Abstract
A new type of tetraphenylborate salts derived from highly basic and nucleophilic amines, namely 1,5-diazabicyclo[4.3.0]non-5-ene (DBN), 1,8-diazabicyclo(5.4.0)undec-7-ene (DBU) and triazabicyclodecene (TBD), was applied to the preparation of networked poly(thiourethane)s (PTUs), which showed a vitrimer-like behavior, with higher stress-relaxation rates than PTUs prepared by using dibutyl thin dilaurate (DBTDL) as the catalyst. The use of these salts, which release the amines when heated, instead of the pure amines, allows the formulation to be easily manipulated to prepare any type of samples. The materials prepared from stoichiometric mixtures of hexamethylene diisocyanate (HDI), trithiol (S3) and with a 10% of molar excess of isocyanate or thiol were characterized by FTIR, thermomechanical analysis, thermogravimetry, stress-relaxation tests and tensile tests, thus obtaining a complete thermal and mechanical characterization of the materials. The recycled materials obtained by grinding the original PTUs and hot-pressing the small pieces in the optimized time and temperature conditions were fully characterized by mechanical, thermomechanical and FTIR studies. This allowed us to confirm their recyclability, without appreciable changes in the network structure and performance. From several observations, the dissociative interchange trans-thiocarbamoylation mechanism was evidenced as the main responsible of the topological rearrangements at high temperature, resulting in a vitrimeric-like behavior.
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Affiliation(s)
- Francesco Gamardella
- Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, C/ Marcel·lí Domingo 1, Building. N4., 43007 Tarragona, Spain;
| | - Sara Muñoz
- Department of Mechanical Engineering, Universitat Rovira i Virgili, Av. Països Catalans, 26, 43007 Tarragona, Spain; (S.M.); (S.D.l.F.)
| | - Silvia De la Flor
- Department of Mechanical Engineering, Universitat Rovira i Virgili, Av. Països Catalans, 26, 43007 Tarragona, Spain; (S.M.); (S.D.l.F.)
| | - Xavier Ramis
- Thermodynamics Laboratory, ETSEIB Universitat Politècnica de Catalunya, Av. Diagonal, 08028 Barcelona, Spain;
| | - Angels Serra
- Department of Analytical and Organic Chemistry, Universitat Rovira i Virgili, C/ Marcel·lí Domingo 1, Building. N4., 43007 Tarragona, Spain;
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66
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Cui C, Chen X, Ma L, Zhong Q, Li Z, Mariappan A, Zhang Q, Cheng Y, He G, Chen X, Dong Z, An L, Zhang Y. Polythiourethane Covalent Adaptable Networks for Strong and Reworkable Adhesives and Fully Recyclable Carbon Fiber-Reinforced Composites. ACS APPLIED MATERIALS & INTERFACES 2020; 12:47975-47983. [PMID: 32986410 DOI: 10.1021/acsami.0c14189] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
The development of adhesives with superior optical and mechanical performance, solvent resistance, and reworkability is gaining increasing attention in recent years. However, traditional materials do not possess reprocessability and healing characteristics for sustainable development. Here, a superior dynamic polythiourethane (PTU) adhesive with high reprocessability was developed by introducing covalent adaptable networks (CANs). Specifically, dynamic thiocarbamate bonds (TCB) were used to prepare PTU CANs, which showed dramatically enhanced malleability and recyclability. The Young's modulus of the material was 2.0 GPa and the tensile strength was 62.7 MPa. The reprocessing temperature of CANs was reduced to 80 °C while more than 90% of their mechanical properties were retained, even after being reprocessed several times. Moreover, the highly transparent and water-resistant PTU CANs featured an excellent bonding property and reworkability for various materials including glass, with a lap shear strength of 2.9 MPa, metal (5.1 MPa), and wood (6.3 MPa), compared with commercially available adhesives. Additionally, carbon fiber-reinforced composites constructed with PTU CANs were capable of being fully recycled and reused. Importantly, laminated glass with a toughened PTU-PU elastomer interface exhibited an outstanding impact fatigue-resistance behavior, sustaining thousands of impacts. These features demonstrate that PTU CANs show great potential as sustainable materials.
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Affiliation(s)
- Chenhui Cui
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Xingxing Chen
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Li Ma
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Qianyun Zhong
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Zhen Li
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, China
| | | | - Qiang Zhang
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yilong Cheng
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Gang He
- Frontier Institute of Science and Technology, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, Key Laboratory of Shaanxi Province for Craniofacial Precision Medicine Research, College of Stomatology, Xi'an Jiaotong University, Xi'an, Shaanxi 710054, China
| | - Xiaoming Chen
- Micro- and Nanotechnology Research Center, State Key Laboratory for Manufacturing Systems Engineering, Xi'an Jiaotong University, Xi'an, Shaanxi 710049, China
| | - Zhen Dong
- Inose Corporation, 72A, Kunminghunanlu, Haidian, Beijing 100089, China
| | - Le An
- State Key Lab for Strength and Vibration of Mechanical Structures, Department of Engineering Mechanics, Xi'an Jiaotong University, Xi'an, 710049, China
| | - Yanfeng Zhang
- School of Chemistry, Xi'an Jiaotong University, Xi'an, 710049, China
- MOE Key Laboratory for Nonequilibrium Synthesis and Modulation of Condensed Matter, Xi'an Key Laboratory of Sustainable Energy Materials Chemistry, State Key Lab for Strength and Vibration of Mechanical Structures, Xi'an Jiaotong University, Xi'an 710049, China
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67
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Ivanoff DG, Sung J, Butikofer SM, Moore JS, Sottos NR. Cross-Linking Agents for Enhanced Performance of Thermosets Prepared via Frontal Ring-Opening Metathesis Polymerization. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01530] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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68
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Bin Rusayyis M, Torkelson JM. Recyclable Polymethacrylate Networks Containing Dynamic Dialkylamino Disulfide Linkages and Exhibiting Full Property Recovery. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01539] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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69
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Elling B, Dichtel WR. Reprocessable Cross-Linked Polymer Networks: Are Associative Exchange Mechanisms Desirable? ACS CENTRAL SCIENCE 2020; 6:1488-1496. [PMID: 32999924 PMCID: PMC7517108 DOI: 10.1021/acscentsci.0c00567] [Citation(s) in RCA: 109] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/05/2020] [Indexed: 05/03/2023]
Abstract
Covalent adaptable networks (CANs) are covalently cross-linked polymers that may be reshaped via cross-linking and/or strand exchange at elevated temperatures. They represent an exciting and rapidly developing frontier in polymer science for their potential as stimuli-responsive materials and to make traditionally nonrecyclable thermosets more sustainable. CANs whose cross-links undergo exchange via associative intermediates rather than dissociating to separate reactive groups are termed vitrimers. Vitrimers were postulated to be an attractive subset of CANs, because associative cross-link exchange mechanisms maintain the original cross-link density of the network throughout the exchange process. As a result, associative CANs demonstrate a gradual, Arrhenius-like reduction in viscosity at elevated temperatures while maintaining mechanical integrity. In contrast, CANs reprocessed by dissociation and reformation of cross-links have been postulated to exhibit a more rapid decrease in viscosity with increasing temperature. Here, we survey the stress relaxation behavior of all dissociative CANs for which variable temperature stress relaxation or viscosity data are reported to date. All exhibit an Arrhenius relationship between temperature and viscosity, as only a small percentage of the cross-links are broken instantaneously under typical reprocessing conditions. As such, dissociative and associative CANs show nearly identical reprocessing behavior over broad temperature ranges typically used for reprocessing. Given that the term vitrimer was coined to highlight an Arrhenius relationship between viscosity and temperature, in analogy to vitreous glasses, we discourage its continued use to describe associative CANs. The realization that the cross-link exchange mechanism does not greatly influence the practical reprocessing behavior of most CANs suggests that exchange chemistries can be considered with fewer constraints, focusing instead on their activation parameters, synthetic convenience, and application-specific considerations.
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Affiliation(s)
- Benjamin
R. Elling
- Department of Chemistry, Northwestern
University, 2145 Sheridan Road, Evanston, Illinois 60208, United
States
| | - William R. Dichtel
- Department of Chemistry, Northwestern
University, 2145 Sheridan Road, Evanston, Illinois 60208, United
States
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70
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Miao W, Zou W, Jin B, Ni C, Zheng N, Zhao Q, Xie T. On demand shape memory polymer via light regulated topological defects in a dynamic covalent network. Nat Commun 2020; 11:4257. [PMID: 32848146 PMCID: PMC7450050 DOI: 10.1038/s41467-020-18116-1] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2020] [Accepted: 07/29/2020] [Indexed: 11/09/2022] Open
Abstract
The ability to undergo bond exchange in a dynamic covalent polymer network has brought many benefits not offered by classical thermoplastic and thermoset polymers. Despite the bond exchangeability, the overall network topologies for existing dynamic networks typically cannot be altered, limiting their potential expansion into unexplored territories. By harnessing topological defects inherent in any real polymer network, we show herein a general design that allows a dynamic network to undergo rearrangement to distinctive topologies. The use of a light triggered catalyst further allows spatio-temporal regulation of the network topology, leading to an unusual opportunity to program polymer properties. Applying this strategy to functional shape memory networks yields custom designable multi-shape and reversible shape memory characteristics. This molecular principle expands the design versatility for network polymers, with broad implications in many other areas including soft robotics, flexible electronics, and medical devices.
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Affiliation(s)
- Wusha Miao
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 310027, Hangzhou, China
| | - Weike Zou
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 310027, Hangzhou, China
| | - Binjie Jin
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 310027, Hangzhou, China
| | - Chujun Ni
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 310027, Hangzhou, China
| | - Ning Zheng
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 310027, Hangzhou, China
| | - Qian Zhao
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 310027, Hangzhou, China
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, 311215, Hangzhou, China
| | - Tao Xie
- State Key Laboratory of Chemical Engineering, College of Chemical and Biological Engineering, Zhejiang University, 310027, Hangzhou, China.
- ZJU-Hangzhou Global Scientific and Technological Innovation Center, 311215, Hangzhou, China.
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71
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Yakeya D, Yoshida Y, Endo T. Phosgene-free and Chemoselective Synthesis of Novel Polyureas from Activated l-Lysine with Diphenyl Carbonate. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c01039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Daisuke Yakeya
- Molecular Engineering Institute, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu-shi, Fukuoka 804-8550, Japan
| | - Yoshiaki Yoshida
- Molecular Engineering Institute, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu-shi, Fukuoka 804-8550, Japan
| | - Takeshi Endo
- Molecular Engineering Institute, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku, Kitakyushu-shi, Fukuoka 804-8550, Japan
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72
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Shieh P, Zhang W, Husted KEL, Kristufek SL, Xiong B, Lundberg DJ, Lem J, Veysset D, Sun Y, Nelson KA, Plata DL, Johnson JA. Cleavable comonomers enable degradable, recyclable thermoset plastics. Nature 2020; 583:542-547. [PMID: 32699399 PMCID: PMC7384294 DOI: 10.1038/s41586-020-2495-2] [Citation(s) in RCA: 141] [Impact Index Per Article: 35.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Accepted: 05/13/2020] [Indexed: 11/25/2022]
Abstract
Thermosets play a key role in the modern plastics and rubber industries, comprising ~20% of polymeric materials with a worldwide annual production of ~65 million tons.1,2 The high density of crosslinks that gives thermosets their useful properties (e.g., chemical/thermal resistance, and tensile strength) comes at the expense of degradability and recyclability. Here, using the industrial thermoset polydicyclopentadiene (pDCPD) as a model system, we show that when a small number of cleavable bonds are selectively installed within the strands of thermoset plastics, the resulting materials can display the same mechanical properties as the native material, yet they are able to undergo triggered degradation to yield soluble, recyclable products of controlled size and functionality. In contrast, installation of cleavable crosslinks, even at comparably high loadings, does not produce degradable materials. These findings reveal cleavable bond location as a design principle for controlled thermoset degradation. Moreover, a new class of recyclable thermosets poised for rapid deployment is introduced.
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Affiliation(s)
- Peyton Shieh
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Wenxu Zhang
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Keith E L Husted
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Samantha L Kristufek
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Boya Xiong
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - David J Lundberg
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA.,Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Jet Lem
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA.,Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - David Veysset
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Yuchen Sun
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA.,Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Keith A Nelson
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA.,Institute for Soldier Nanotechnologies, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Desiree L Plata
- Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, MA, USA
| | - Jeremiah A Johnson
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, MA, USA.
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73
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Gamardella F, De la Flor S, Ramis X, Serra A. Recyclable poly(thiourethane) vitrimers with high Tg. Influence of the isocyanate structure. REACT FUNCT POLYM 2020. [DOI: 10.1016/j.reactfunctpolym.2020.104574] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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74
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Fan CJ, Wen ZB, Xu ZY, Xiao Y, Wu D, Yang KK, Wang YZ. Adaptable Strategy to Fabricate Self-Healable and Reprocessable Poly(thiourethane-urethane) Elastomers via Reversible Thiol–Isocyanate Click Chemistry. Macromolecules 2020. [DOI: 10.1021/acs.macromol.0c00239] [Citation(s) in RCA: 41] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Cheng-Jie Fan
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Zhi-Bin Wen
- Laboratory of Polymeric and Composite Materials (LPCM) Center of Innovation and Research in Materials and Polymers (CIRMAP), University of Mons, Place du Parc 23, Mons B-7000, Belgium
| | - Zhi-Yuan Xu
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yi Xiao
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Di Wu
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Ke-Ke Yang
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China
| | - Yu-Zhong Wang
- Collaborative Innovation Center for Eco-Friendly and Fire-Safety Polymeric Materials (MoE), State Key Laboratory of Polymer Materials Engineering, National Engineering Laboratory of Eco-Friendly Polymeric Materials (Sichuan), College of Chemistry, Sichuan University, Chengdu 610064, China
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75
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Konuray O, Fernández-Francos X, De la Flor S, Ramis X, Serra À. The Use of Click-Type Reactions in the Preparation of Thermosets. Polymers (Basel) 2020; 12:E1084. [PMID: 32397509 PMCID: PMC7285069 DOI: 10.3390/polym12051084] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2020] [Revised: 05/05/2020] [Accepted: 05/06/2020] [Indexed: 12/31/2022] Open
Abstract
Click chemistry has emerged as an effective polymerization method to obtain thermosets with enhanced properties for advanced applications. In this article, commonly used click reactions have been reviewed, highlighting their advantages in obtaining homogeneous polymer networks. The basic concepts necessary to understand network formation via click reactions, together with their main characteristics, are explained comprehensively. Some of the advanced applications of thermosets obtained by this methodology are also reviewed.
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Affiliation(s)
- Osman Konuray
- Thermodynamics Laboratory, ETSEIB Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain; (O.K.); (X.F.-F.); (X.R.)
| | - Xavier Fernández-Francos
- Thermodynamics Laboratory, ETSEIB Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain; (O.K.); (X.F.-F.); (X.R.)
| | - Silvia De la Flor
- Department of Mechanical Engineering, Universitat Rovira i Virgili, Av. Països Catalans 26, 43007 Tarragona, Spain;
| | - Xavier Ramis
- Thermodynamics Laboratory, ETSEIB Universitat Politècnica de Catalunya, Av. Diagonal 647, 08028 Barcelona, Spain; (O.K.); (X.F.-F.); (X.R.)
| | - Àngels Serra
- Department of Analytical and Organic Chemistry, University Rovira i Virgili, c/ Marcel·lí Domingo 1, 43007 Tarragona, Spain
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76
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Erice A, Ruiz de Luzuriaga A, Azcune I, Fernandez M, Calafel I, Grande HJ, Rekondo A. New injectable and self-healable thermoset polythiourethane based on S-aromatic thiourethane dissociative exchange mechanism. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122461] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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77
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Hao C, Liu T, Zhang S, Liu W, Shan Y, Zhang J. Triethanolamine-Mediated Covalent Adaptable Epoxy Network: Excellent Mechanical Properties, Fast Repairing, and Easy Recycling. Macromolecules 2020. [DOI: 10.1021/acs.macromol.9b02243] [Citation(s) in RCA: 67] [Impact Index Per Article: 16.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Cheng Hao
- School of Mechanical and Materials Engineering, Composite Materials and Engineering Center, Washington State University, Pullman, Washington 99164, United States
| | - Tuan Liu
- School of Mechanical and Materials Engineering, Composite Materials and Engineering Center, Washington State University, Pullman, Washington 99164, United States
| | - Shuai Zhang
- School of Mechanical and Materials Engineering, Composite Materials and Engineering Center, Washington State University, Pullman, Washington 99164, United States
| | - Wangcheng Liu
- School of Mechanical and Materials Engineering, Composite Materials and Engineering Center, Washington State University, Pullman, Washington 99164, United States
| | - Yingfa Shan
- School of Mechanical and Materials Engineering, Composite Materials and Engineering Center, Washington State University, Pullman, Washington 99164, United States
- School of Textile Materials and Engineering, Wuyi University, Jiangmen, Guangdong 529020, P. R. China
| | - Jinwen Zhang
- School of Mechanical and Materials Engineering, Composite Materials and Engineering Center, Washington State University, Pullman, Washington 99164, United States
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78
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Zhan Y, Wei Y, Zhang H, Luo M, Zheng T, Liao S. Analysis of the thermogenesis mechanism of natural rubber under high speed strain. POLYM ADVAN TECHNOL 2020. [DOI: 10.1002/pat.4923] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Yue‐Hua Zhan
- Natural Rubber Cooperative Innovation Center of Hainan Province & Ministry of Education of PR ChinaHainan University Haikou China
- School of Materials Science and EngineeringHainan University Haikou China
| | - Yan‐Chan Wei
- Natural Rubber Cooperative Innovation Center of Hainan Province & Ministry of Education of PR ChinaHainan University Haikou China
- School of Materials Science and EngineeringHainan University Haikou China
| | - Hui‐Feng Zhang
- Natural Rubber Cooperative Innovation Center of Hainan Province & Ministry of Education of PR ChinaHainan University Haikou China
- School of Materials Science and EngineeringHainan University Haikou China
| | - Ming‐Chao Luo
- Natural Rubber Cooperative Innovation Center of Hainan Province & Ministry of Education of PR ChinaHainan University Haikou China
- School of Materials Science and EngineeringHainan University Haikou China
| | - Ting‐Ting Zheng
- Natural Rubber Cooperative Innovation Center of Hainan Province & Ministry of Education of PR ChinaHainan University Haikou China
- School of Materials Science and EngineeringHainan University Haikou China
| | - Shuangquan Liao
- Natural Rubber Cooperative Innovation Center of Hainan Province & Ministry of Education of PR ChinaHainan University Haikou China
- School of Materials Science and EngineeringHainan University Haikou China
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79
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Exploring the unique characteristics of natural rubber induced by coordination interaction between proteins and Zn2+. POLYMER 2020. [DOI: 10.1016/j.polymer.2020.122357] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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80
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Podgórski M, Mavila S, Huang S, Spurgin N, Sinha J, Bowman CN. Thiol–Anhydride Dynamic Reversible Networks. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202001388] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Maciej Podgórski
- Department of Chemical and Biological EngineeringUniversity of Colorado UCB 596 Boulder 80309 CO USA
- Department of Polymer ChemistryMaria Curie-Sklodowska University pl. Marii Curie-Sklodowskiej 5 20-031 Lublin Poland
| | - Sudheendran Mavila
- Department of Chemical and Biological EngineeringUniversity of Colorado UCB 596 Boulder 80309 CO USA
| | - Sijia Huang
- Department of Chemical and Biological EngineeringUniversity of Colorado UCB 596 Boulder 80309 CO USA
| | - Nathan Spurgin
- Department of Chemical and Biological EngineeringUniversity of Colorado UCB 596 Boulder 80309 CO USA
| | - Jasmine Sinha
- Department of Chemical and Biological EngineeringUniversity of Colorado UCB 596 Boulder 80309 CO USA
| | - Christopher N. Bowman
- Department of Chemical and Biological EngineeringUniversity of Colorado UCB 596 Boulder 80309 CO USA
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81
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Podgórski M, Mavila S, Huang S, Spurgin N, Sinha J, Bowman CN. Thiol–Anhydride Dynamic Reversible Networks. Angew Chem Int Ed Engl 2020; 59:9345-9349. [DOI: 10.1002/anie.202001388] [Citation(s) in RCA: 43] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2020] [Revised: 03/03/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Maciej Podgórski
- Department of Chemical and Biological EngineeringUniversity of Colorado UCB 596 Boulder 80309 CO USA
- Department of Polymer ChemistryMaria Curie-Sklodowska University pl. Marii Curie-Sklodowskiej 5 20-031 Lublin Poland
| | - Sudheendran Mavila
- Department of Chemical and Biological EngineeringUniversity of Colorado UCB 596 Boulder 80309 CO USA
| | - Sijia Huang
- Department of Chemical and Biological EngineeringUniversity of Colorado UCB 596 Boulder 80309 CO USA
| | - Nathan Spurgin
- Department of Chemical and Biological EngineeringUniversity of Colorado UCB 596 Boulder 80309 CO USA
| | - Jasmine Sinha
- Department of Chemical and Biological EngineeringUniversity of Colorado UCB 596 Boulder 80309 CO USA
| | - Christopher N. Bowman
- Department of Chemical and Biological EngineeringUniversity of Colorado UCB 596 Boulder 80309 CO USA
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82
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Quienne B, Kasmi N, Dieden R, Caillol S, Habibi Y. Isocyanate-Free Fully Biobased Star Polyester-Urethanes: Synthesis and Thermal Properties. Biomacromolecules 2020; 21:1943-1951. [PMID: 32175728 DOI: 10.1021/acs.biomac.0c00156] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A green strategy for the synthesis of nonisocyanate polyester-urethanes (NIPHEUs) was developed. These NIPHEUs were synthesized by step growth polymerization combining sugar-derived dimethyl-2,5-furan dicarboxylate (DMFD) with polyhydroxylurethanes (PHUs) adducts bearing four hydroxyl groups. The later hydroxyl urethane tetraols (HU-tetraols) building blocks were prepared by aminolysis of glycerol carbonate with two different aliphatic diamines having different chain lengths, 8 and 12 carbons. Qualitative and quantitative NMR analyses of the HU-tetraols showed the presence of primary and secondary hydroxyl moieties at different ratios. Hence, in the polycondensation stage, the stoichiometry of the diester was varied from 1 to 6 equiv in order to tailor the structural features of the prepared NIPHEUs. The success of the chain extension through polycondensation was confirmed by FTIR and NMR analyses. Thermal analyses of these new polymers demonstrated satisfactory thermal stability, with onset degradation temperatures ranging from 170 to 220 °C where the main first degradation stage occurs. Their melting temperatures ranged between 93 and 110 °C and seem to be driven by the thermal behavior of HU-tetraol monomers. Surprisingly, preliminary results from thermal analyses revealed the occurrence of a striking thermal change in the NIPHEUs upon repetitive heating cycles. This behavior may be related to a thermal-induced bond exchange probably driven by transcarbamoylation reaction. Such interesting vitrimer-like behavior for this new type of NIPHEUs would be unique and should be confirmed by a deeper study before leading to a new range of functional green materials.
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Affiliation(s)
| | - Nejib Kasmi
- Materials Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg
| | - Reiner Dieden
- Materials Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg
| | | | - Youssef Habibi
- Materials Research and Technology Department (MRT), Luxembourg Institute of Science and Technology (LIST), 5 avenue des Hauts-Fourneaux, L-4362 Esch-sur-Alzette, Luxembourg
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83
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Huang S, Podgórski M, Han X, Bowman CN. Chemical recycling of poly(thiourethane) thermosets enabled by dynamic thiourethane bonds. Polym Chem 2020. [DOI: 10.1039/d0py01050b] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Herein, we introduce a detailed investigation of the dynamic nature of the thiourethane bond and subsequently apply this dynamic character to formation, recycling and even additive manufacturing using cross-linked networks.
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Affiliation(s)
- Sijia Huang
- Department of Chemical and Biological Engineering
- University of Colorado Boulder
- Boulder
- USA
| | - Maciej Podgórski
- Department of Chemical and Biological Engineering
- University of Colorado Boulder
- Boulder
- USA
- Department of Polymer Chemistry, Institute of Chemical Sciences, Faculty of Chemistry, Maria Curie-Sklodowska University, M. Curie-Sklodowska Sq. 5, 20-031 Lublin, Poland
| | - Xun Han
- Department of Chemical and Biological Engineering
- University of Colorado Boulder
- Boulder
- USA
| | - Christopher N. Bowman
- Department of Chemical and Biological Engineering
- University of Colorado Boulder
- Boulder
- USA
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84
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Miao W, Zou W, Luo Y, Zheng N, Zhao Q, Xie T. Structural tuning of polycaprolactone based thermadapt shape memory polymer. Polym Chem 2020. [DOI: 10.1039/c9py01891c] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polycaprolactone based thermadapt shape memory polymers with precisely controlled structures allow tunable shape reconfigurability.
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Affiliation(s)
- Wusha Miao
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Weike Zou
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Yingwu Luo
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Ning Zheng
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Qiao Zhao
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
| | - Tao Xie
- State Key Laboratory of Chemical Engineering
- College of Chemical and Biological Engineering
- Zhejiang University
- Hangzhou 310027
- China
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