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Zeng G, Dong Y, Luo J, Zhou Y, Li C, Li K, Li X, Li J. Desirable Strong and Tough Adhesive Inspired by Dragonfly Wings and Plant Cell Walls. ACS Nano 2024; 18:9451-9469. [PMID: 38452378 DOI: 10.1021/acsnano.3c11160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
The production of wood-based panels has a significant demand for mechanically strong and flexible biomass adhesives, serving as alternatives to nonrenewable and toxic formaldehyde-based adhesives. Nonetheless, plywood usually exhibits brittle fracture due to the inherent trade-off between rigidity and toughness, and it is susceptible to damage and deformation defects in production applications. Herein, inspired by the microstructure of dragonfly wings and the cross-linking structure of plant cell walls, a soybean meal (SM) adhesive with great strength and toughness was developed. The strategy was combined with a multiple assembly system based on the tannic acid (TA) stripping/modification of molybdenum disulfide (MoS2@TA) hybrids, phenylboronic acid/quaternary ammonium doubly functionalized chitosan (QCP), and SM. Motivated by the microstructure of dragonfly wings, MoS2@TA was tightly bonded with the SM framework through Schiff base and strong hydrogen bonding to dissipate stress energy through crack deflection, bridging, and immobilization. QCP imitated borate chemistry in plant cell walls to optimize interfacial interactions within the adhesive by borate ester bonds, boron-nitrogen coordination bonds, and electrostatic interactions and dissipate energy through sacrificial bonding. The shear strength and fracture toughness of the SM/QCP/MoS2@TA adhesive were 1.58 MPa and 0.87 J, respectively, which were 409.7% and 866.7% higher than those of the pure SM adhesive. In addition, MoS2@TA and QCP gave the adhesive good mildew resistance, durability, weatherability, and fire resistance. This bioinspired design strategy offers a viable and sustainable approach for creating multifunctional strong and tough biobased materials.
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Affiliation(s)
- Guodong Zeng
- College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, People's Republic of China
| | - Youming Dong
- College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, People's Republic of China
| | - Jing Luo
- College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, People's Republic of China
| | - Ying Zhou
- College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, People's Republic of China
| | - Cheng Li
- College of Forestry, Henan Agricultural University, Zhengzhou 450002, People's Republic of China
| | - Kuang Li
- College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, People's Republic of China
| | - Xiaona Li
- College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, People's Republic of China
| | - Jianzhang Li
- College of Materials Science and Engineering, Nanjing Forestry University, Longpan Road 159, Xuanwu District, Nanjing 210037, People's Republic of China
- State Key Laboratory of Efficient Production of Forest Resources, Beijing Forestry University, Qinghua East Road 35, Haidian District, Beijing 100083, People's Republic of China
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Yang X, Xu L, Wang C, Wu J, Zhu B, Meng X, Qiu D. Reinforcing Hydrogel by Nonsolvent-Quenching-Facilitated In Situ Nanofibrosis. Adv Mater 2023; 35:e2303728. [PMID: 37448332 DOI: 10.1002/adma.202303728] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/21/2023] [Revised: 06/23/2023] [Accepted: 07/12/2023] [Indexed: 07/15/2023]
Abstract
Nanofibrous hydrogels are pervasive in load-bearing soft tissues, which are believed to be key to their extraordinary mechanical properties. Enlighted by this phenomenon, a novel reinforcing strategy for polymeric hydrogels is proposed, where polymer segments in the hydrogels are induced to form nanofibers in situ by bolstering their controllable aggregation at the nanoscale level. Poly(vinyl alcohol) hydrogels are chosen to demonstrate the virtue of this strategy. A nonsolvent-quenching step is introduced into the conventional solvent-exchange hydrogel preparation approach, which readily promotes the formation of nanofibrous hydrogels in the following solvent-tempering process. The resultant nanofibrous hydrogels demonstrate significantly improved mechanical properties and swelling resistance, compared to the conventional solvent-exchange hydrogels with identical compositions. This work validates the hypothesis that bundling polymer chains to form nanofibers can lead to nanofibrous hydrogels with remarkably enhanced mechanical performances, which may open a new horizon for single-component hydrogel reinforcement.
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Affiliation(s)
- Xule Yang
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Liju Xu
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Chen Wang
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Jilin Wu
- Department of Cariology and Endodontology, Peking University School and Hospital of Stomatology, Beijing, 100081, China
| | - Bin Zhu
- Department of Orthopaedics, Beijing Friendship Hospital, Capital Medical University, Beijing, 100050, China
| | - Xiaohui Meng
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
| | - Dong Qiu
- Beijing National Laboratory for Molecular Sciences, Laboratory of Polymer Physics and Chemistry, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China
- University of Chinese Academy of Sciences, Beijing, 100049, China
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Li Z, Chen C, Mi R, Gan W, Dai J, Jiao M, Xie H, Yao Y, Xiao S, Hu L. A Strong, Tough, and Scalable Structural Material from Fast-Growing Bamboo. Adv Mater 2020; 32:e1906308. [PMID: 31999009 DOI: 10.1002/adma.201906308] [Citation(s) in RCA: 58] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/25/2019] [Revised: 11/04/2019] [Indexed: 05/08/2023]
Abstract
Lightweight structural materials with high strength are desirable for advanced applications in transportation, construction, automotive, and aerospace. Bamboo is one of the fastest growing plants with a peak growth rate up to 100 cm per day. Here, a simple and effective top-down approach is designed for processing natural bamboo into a lightweight yet strong bulk structural material with a record high tensile strength of ≈1 GPa and toughness of 9.74 MJ m-3 . More specifically, bamboo is densified by the partial removal of its lignin and hemicellulose, followed by hot-pressing. Long, aligned cellulose nanofibrils with dramatically increased hydrogen bonds and largely reduced structural defects in the densified bamboo structure contribute to its high mechanical tensile strength, flexural strength, and toughness. The low density of lignocellulose in the densified bamboo leads to a specific strength of 777 MPa cm3 g-1 , which is significantly greater than other reported bamboo materials and most structural materials (e.g., natural polymers, plastics, steels, and alloys). This work demonstrates a potential large-scale production of lightweight, strong bulk structural materials from abundant, fast-growing, and sustainable bamboo.
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Affiliation(s)
- Zhihan Li
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Chaoji Chen
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Ruiyu Mi
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Wentao Gan
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Jiaqi Dai
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Miaolun Jiao
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Hua Xie
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Yonggang Yao
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Shaoliang Xiao
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
| | - Liangbing Hu
- Department of Materials Science and Engineering, University of Maryland, College Park, MD, 20742, USA
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