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Wang S, He J, Tao X, Yin C, Liu H, Guo J, Zhang Y, Yao W, Zeng Z, Xie S, Tang BZ. Design and Construction of Highly Luminescent Transparent Woody Materials Exhibiting Unique Fluorescence-Enhanced Staining Effects for Visualization of Intrinsic Microporous Networks. ACS APPLIED MATERIALS & INTERFACES 2024. [PMID: 39138882 DOI: 10.1021/acsami.4c08138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/15/2024]
Abstract
Luminescent wood materials are an emerging class of biomass hybrid host materials owing to the hierarchical porous structure and functionalization versatility. The fluorescence properties are largely dependent on exogenous fluorophores, which are, however, often plagued by notorious aggregation effects. In this work, an efficient strategy for the preparation of luminescent transparent wood materials is developed by incorporating tetraphenylethylene-derived aggregation-induced emission (AIE)-active fluorophores during a delignification-backfill transparency process. These wood hybrids showed unexpected luminescence enhancement that significantly increased the fluorescence quantum yield of the fluorophores up to 99%, much higher than that of the fluorophores in other states such as crystalline solids or doped in a polymer substrate. Mechanistic investigations reveal that in situ polymerization of prepolymerized methyl methacrylate in delignified microporous wood frames produces high molecular weight ordered PMMA polymers, resulting in a rigid molecular environment that improves the luminescence efficiency of TPE-based fluorophores at the interfaces of PMMA polymer and cell walls. By confocal laser scanning microscopy (CLSM), this excellent fluorescence staining capability was furthermore utilized to visualize the intrinsic porous network of wood in three dimensions over a large volume with submicrometer resolution, thus providing an alternative approach to the study of structure-function relationships in such wood hybrids.
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Affiliation(s)
- Shuodong Wang
- Shenzhen Research Institute of Hunan University, Nanshan District, Shenzhen 518000; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jinzhi He
- Shenzhen Research Institute of Hunan University, Nanshan District, Shenzhen 518000; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Xiaomou Tao
- Shenzhen Research Institute of Hunan University, Nanshan District, Shenzhen 518000; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Chunguang Yin
- Shenzhen Research Institute of Hunan University, Nanshan District, Shenzhen 518000; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Haohao Liu
- Shenzhen Research Institute of Hunan University, Nanshan District, Shenzhen 518000; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Jing Guo
- Furong College, Hunan University of Arts and Science, Changde 415000, China
| | - Yang Zhang
- Shenzhen Research Institute of Hunan University, Nanshan District, Shenzhen 518000; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Wenhuan Yao
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, P. R. China
| | - Zebing Zeng
- Shenzhen Research Institute of Hunan University, Nanshan District, Shenzhen 518000; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
| | - Sheng Xie
- Shenzhen Research Institute of Hunan University, Nanshan District, Shenzhen 518000; State Key Laboratory of Chemo/Biosensing and Chemometrics, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China
- AIE Institute, Guangzhou Development District, Huangpu, Guangzhou 510530, China
| | - Ben Zhong Tang
- School of Science and Engineering, The Chinese University of Hong Kong, Shenzhen (CUHK-Shenzhen), Guangdong 518172, China
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2
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Wu M, Lin G, Li R, Liu X, Liu S, Zhao J, Xie W. Molecular-caged metal-organic frameworks for energy management. SCIENCE ADVANCES 2024; 10:eadl4449. [PMID: 38718124 PMCID: PMC11078190 DOI: 10.1126/sciadv.adl4449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/18/2023] [Accepted: 04/04/2024] [Indexed: 05/12/2024]
Abstract
Metal-organic frameworks (MOFs) hold great promise for diverse applications when combined with polymers. However, a persistent challenge lies in the susceptibility of exposed MOF pores to molecule and polymer penetration, compromising the porosity and overall performance. Here, we design a molecular-caged MOF (MC-MOF) to achieve contracted window without sacrificing the MOF porosity by torsional conjugated ligands. These molecular cages effectively shield against the undesired molecule penetration during polymerization, thereby preserving the pristine porosity of MC-MOF and providing outstanding light and thermal management to the composites. The polymer containing 0.5 wt % MC-MOF achieves an 83% transmittance and an exceptional haze of 93% at 550 nanometers, coupled with remarkable thermal insulation. These MC-MOF/polymer composites offer the potential for more uniform daylighting and reduced energy consumption in sustainable buildings when compared to traditional glass materials. This work delivers a general method to uphold MOF porosity in polymers through molecular cage design, advancing MOF-polymer applications in energy and sustainability.
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Affiliation(s)
- Minghong Wu
- School of Materials Science and Engineering, Key Laboratory Guangdong High Property and Functional Polymer Materials, Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Gengye Lin
- School of Materials Science and Engineering, Key Laboratory Guangdong High Property and Functional Polymer Materials, Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Rui Li
- School of Materials Science and Engineering, Key Laboratory Guangdong High Property and Functional Polymer Materials, Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Xing Liu
- School of Materials Science and Engineering, Key Laboratory Guangdong High Property and Functional Polymer Materials, Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Shumei Liu
- School of Materials Science and Engineering, Key Laboratory Guangdong High Property and Functional Polymer Materials, Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Jianqing Zhao
- School of Materials Science and Engineering, Key Laboratory Guangdong High Property and Functional Polymer Materials, Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, South China University of Technology, Guangzhou 510640, China
| | - Weiqi Xie
- School of Minerals Processing and Bioengineering, Central South University, Changsha 410083, China
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3
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Albalawi MA. Modification of wood lignin and integration with multifunctional polyester nanocomposite. Int J Biol Macromol 2024; 267:131466. [PMID: 38599420 DOI: 10.1016/j.ijbiomac.2024.131466] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2024] [Revised: 03/25/2024] [Accepted: 04/06/2024] [Indexed: 04/12/2024]
Abstract
A simple strategy was introduced to develop fluorescent wood with the ability to alter its color when exposed to both visible and ultraviolet lights. Injecting a combination of europium and dysprosium doped aluminate (EDA; 7-12 nm) nanoparticles and polyester resin (PET) into a lignin-modified wood (LMW) produced a translucent smart wooden window with fluorescence and afterglow emission properties. In order to prevent formation of aggregates and improve the preparation process of transparent woods, EDA must be properly disseminated in the polyester matrix. We analyzed the fluorescent wood samples using a variety of spectroscopic and microscopic methods, including energy-dispersive X-ray (EDX), scanning electron microscopy (SEM), photoluminescence spectra, and hardness tests. We found that the photoluminescent woods had an excitation peak at 365 nm and emission peaks at 437 nm and 517 nm. The translucent luminous woods showed rapid and reversible emission response to ultraviolet light. Fluorescence emission was detected for samples with lower EDA content, and afterglow emission was detected for wood samples with higher EDA content. Increases in EDA content were associated with improvements in water resistance and ultraviolet radiation protection in the EDA@PET-infiltrated wood.
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Affiliation(s)
- Marzough Aziz Albalawi
- Department of Chemistry, Alwajh College, University of Tabuk, Tabuk 71421, Saudi Arabia.
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4
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Wang X, Tian W, Ye Y, Chen Y, Wu W, Jiang S, Wang Y, Han X. Surface modifications towards superhydrophobic wood-based composites: Construction strategies, functionalization, and perspectives. Adv Colloid Interface Sci 2024; 326:103142. [PMID: 38555834 DOI: 10.1016/j.cis.2024.103142] [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: 12/05/2023] [Revised: 03/04/2024] [Accepted: 03/27/2024] [Indexed: 04/02/2024]
Abstract
Amidst the burgeoning interest in multifunctional superhydrophobic wood-based composites (SWBCs) for their varied applications and the need for improved environmental resilience, recent efforts focus on enhancing their utility by integrating features such as mechanical and chemical stability, self-healing capabilities, flame resistance, and antimicrobial properties. Research indicates that various external conditions can influence the wettability and additional characteristics of SWBCs. This comprehensive review outlines three critical factors affecting SWBCs' performance: synthesis methods, wood taxonomy, and chemical agents. It further provides a detailed overview of SWBCs' specific attributes, including essential qualities for diverse applications and the limitations posed by different contexts. Additionally, it elaborates on performance evaluation techniques, offering a foundational framework for SWBCs' practical application. This work aims to serve as an important resource for future research and development in SWBC engineering.
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Affiliation(s)
- Xiaoyi Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Wei Tian
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yuhang Ye
- Department of Materials Science and Engineering, University of Pennsylvania, Philadelphia, PA 19104, USA
| | - Yuan Chen
- Research Institute of Wood Industry, Chinese Academy of Forestry, Beijing 100000, China
| | - Weijie Wu
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Shaohua Jiang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Yuli Wang
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China
| | - Xiaoshuai Han
- Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources, International Innovation Center for Forest Chemicals and Materials, College of Materials Science and Engineering, Nanjing Forestry University, Nanjing 210037, China.
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5
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Bansal R, Barshilia HC, Pandey KK. Nanotechnology in wood science: Innovations and applications. Int J Biol Macromol 2024; 262:130025. [PMID: 38340917 DOI: 10.1016/j.ijbiomac.2024.130025] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 02/04/2024] [Accepted: 02/05/2024] [Indexed: 02/12/2024]
Abstract
Application of nanomaterials is gaining tremendous interest in the field of wood science and technology for value addition and enhancing performance of wood and wood-based composites. This review focuses on the use of nanomaterials in improving the properties of wood and wood-based materials and protecting them from weathering, biodegradation, and other deteriorating agents. UV-resistant, self-cleaning (superhydrophobic) surfaces with anti-microbial properties have been developed using the extraordinary features of nanomaterials. Scratch-resistant nano-coatings also improve durability and aesthetic appeal of wood. Moreover, nanomaterials have been used as wood preservatives for increasing the resistance against wood deteriorating agents such as fungi, termites and borers. Wood can be made more resistant to ignition and slower to burn by introducing nano-clays or nanoparticles of metal-oxides. The use of nanocellulose and lignin nanoparticles in wood-based products has attracted huge interest in developing novel materials with improved properties. Nanocellulose and lignin nanoparticles derived/synthesized from woody biomass can enhance the mechanical properties such as strength and stiffness and impart additional functionalities to wood-based products. Cellulose nano-fibres/crystals find application in wide areas of materials science like reinforcement for composites. Incorporation of nanomaterials in resin has been used to enhance specific properties of wood-based composites. This review paper highlights some of the advancements in the use of nanotechnology in wood science, and its potential impact on the industry.
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Affiliation(s)
- Richa Bansal
- Institute of Wood Science and Technology, 18th Cross Malleswaram, Bengaluru 560003, India
| | - Harish C Barshilia
- CSIR-National Aerospace Laboratories, HAL Airport Road, Bangalore 560017, India
| | - Krishna K Pandey
- Institute of Wood Science and Technology, 18th Cross Malleswaram, Bengaluru 560003, India.
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6
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Arshad A, Roy A, Mallick TK, Tahir AA. Shape-Stabilized PEGylated Silica Aerogel-Composite as an Energy Saving Building Material. Ind Eng Chem Res 2023; 62:20236-20250. [PMID: 38045733 PMCID: PMC10690784 DOI: 10.1021/acs.iecr.3c02373] [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: 07/13/2023] [Revised: 10/24/2023] [Accepted: 11/02/2023] [Indexed: 12/05/2023]
Abstract
Balancing thermal and visual comfort in buildings necessitates effective insulation to counteract heat loss and gain, especially with temperature variances. One promising approach is to combine phase change materials, such as poly(ethylene glycol) (PEG), with high-performance insulators like silica aerogel (Siag). To bolster opto-thermal performance in building envelopes, we introduce a smart insulation composite material through PEG integration, i.e., PEGalyation with Siag. Central to this thermal behavior is the PEG's phase change properties, which foster a shape-stabilized framework with Siag through their porous confinement. Preliminary observations indicate notable capabilities of obstructing near-infrared light while preserving satisfactory visible transparency. An optimized Siag@PEG composite with 5% loading of PEG has the visible range transmission of ∼92%, a decrease of ∼72% in thermal conductivity which is lower than pure glass and PEG, leading to a temperature dependent switchable hydrophobic to hydrophilic wettability characteristics. As a prototype window, the thermal performance evaluation of the synthesized composite, through experimental and computational studies, shows a decrease in indoor temperature of ∼20% with a higher temperature difference of ∼20 °C between outdoor and indoor weather conditions. This lightweight composite can act as sponge media to fill inside the double-paned window and for retrofitting existing glazing to boost the energy efficiency of buildings with facile manufacturing and scalability.
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Affiliation(s)
| | | | - Tapas K. Mallick
- Solar Energy Research Group,
Environment and Sustainability Institute, University of Exeter, Penryn
Campus, Cornwall TR10 9FE, U.K.
| | - Asif Ali Tahir
- Solar Energy Research Group,
Environment and Sustainability Institute, University of Exeter, Penryn
Campus, Cornwall TR10 9FE, U.K.
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7
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Xu T, Ju X, Tang H, Xiang W, Wang Z, Li Y. Enhanced Modification of Fast-Growing Wood: Application and Evaluation of Castor Oil-Based Unsaturated Polyester Resin. ACS OMEGA 2023; 8:44350-44361. [PMID: 38027384 PMCID: PMC10666213 DOI: 10.1021/acsomega.3c07565] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 10/30/2023] [Accepted: 11/01/2023] [Indexed: 12/01/2023]
Abstract
A type of multifunctional maleic acid ester monomer (COEGMA) was synthesized using castor oil as raw material, and green wood-plastic composites were prepared by chemically impregnating and curing the monomer into wood. The structure of the synthesized products at various stages was determined by FT-IR spectroscopy, 1H NMR, and GPC, and the curing experimental conditions were optimized. The results show that the water absorption of wood-plastic composites treated with COEGMA is reduced from the original 167.3% to less than 20%. The compressive strength has increased from 35.7 to 86.1 MPa, and the thermal stability has also increased by 40 °C. This research provides promising prospects for the development of environmentally friendly wood-plastic composites, especially as fossil resources become scarce and environmental pollution becomes more severe.
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Affiliation(s)
- Tianle Xu
- Faculty
of Chemical Engineering, Kunming University
of Science and Technology, Kunming 650093, China
| | - Xinran Ju
- Faculty
of Science, University of Sydney, Camperdown, New South Wales 2050, Australia
| | - Hui Tang
- Faculty
of Chemical Engineering, Kunming University
of Science and Technology, Kunming 650093, China
| | - Wenli Xiang
- Faculty
of Chemical Engineering, Kunming University
of Science and Technology, Kunming 650093, China
| | - Zhiliang Wang
- Faculty
of Chemical Engineering, Kunming University
of Science and Technology, Kunming 650093, China
| | - Yandi Li
- Faculty
of Chemical Engineering, Kunming University
of Science and Technology, Kunming 650093, China
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8
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Zhang L, Dong C, Yuan C, Bai X. Novel Wood-Based Functional Material with Vibration and Noise Reduction. ACS APPLIED MATERIALS & INTERFACES 2023; 15:38769-38780. [PMID: 37535833 DOI: 10.1021/acsami.3c06508] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 08/05/2023]
Abstract
As a kind of typical green material, natural materials tend to exhibit excellent performance in the engineering field because of their structure and special functions. The homogeneous vessels of red willow (RW) are potentially unique structures to store lubricants or reinforcing agents to present special functions for engineering applications. A series of novel red willow wood-based composites, which were infused with nano-MoS2 and then reinforced by the epoxy, were developed. Their self-lubricating, mechanical vibration and noise reduction performances were investigated, and the friction, vibration, and noise reduction mechanisms were disclosed. The infusion MoS2 treatment was very beneficial for improving the tribological properties of MoS2-curing epoxy/red willow (MCW), and the coefficient of friction (COF) was reduced by 65.8% under water-lubricated friction after infusing 24 times. Meanwhile, the mechanical performances of MCW were obviously enhanced through the curing treatment of the epoxy. The synergistic effects of the infusion and curing treatments significantly decreased the wear phenomena on the friction surfaces of MCW and weakened the COF and its fluctuation amplitudes, which resulted in the presented excellent vibration and noise reduction performance. The knowledge gained herein could not only develop a novel wood-based composite with low COF and good vibration reduction properties in the engineering field but also provide a new methodology for the design of artificial porous materials with stable and smooth friction processes.
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Affiliation(s)
- Liyuan Zhang
- School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China
- Reliability Engineering Institute, National Engineering Research Center for Water Transport Safety, Wuhan 430063, China
| | - Conglin Dong
- School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China
- Reliability Engineering Institute, National Engineering Research Center for Water Transport Safety, Wuhan 430063, China
| | - Chengqing Yuan
- School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China
- Reliability Engineering Institute, National Engineering Research Center for Water Transport Safety, Wuhan 430063, China
- East Lake Laboratory, Wuhan 430202, China
| | - Xiuqin Bai
- School of Transportation and Logistics Engineering, Wuhan University of Technology, Wuhan 430063, China
- Reliability Engineering Institute, National Engineering Research Center for Water Transport Safety, Wuhan 430063, China
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9
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Sun T, Zhang Z, Cui D, Mu G, Sun X, Su X, Shi Y. Quantitative 3D Temperature Rendering of Deep Tumors by a NIR-II Reversibly Responsive W-VO 2@PEG Photoacoustic Nanothermometer to Promote Precise Cancer Photothermal Therapy. ACS NANO 2023; 17:14604-14618. [PMID: 37471572 DOI: 10.1021/acsnano.3c01723] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 07/22/2023]
Abstract
Accurately monitoring the three-dimensional (3D) temperature distribution of the tumor area in situ is a critical task that remains challenging in precision cancer photothermal (PT) therapy. Here, by ingeniously constructing a polyethylene glycol-coated tungsten-doped vanadium dioxide (W-VO2@PEG) photoacoustic (PA) nanothermometer (NThem) that linearly and reversibly responds to the thermal field near the human-body-temperature range, the authors propose a method to realize quantitative 3D temperature rendering of deep tumors to promote precise cancer PT therapy. The prepared NThems exhibit a mild phase transition from the monoclinic phase to the rutile phase when their temperature grows from 35 to 45 °C, with the optical absorption sharply increased ∼2-fold at 1064 nm in an approximately linear manner in the near-infrared-II (NIR-II) region, enabling W-VO2@PEG to be used as NThems for quantitative temperature monitoring of deep tumors with basepoint calibration, as well as diagnostic agents for PT therapy. Experimental results showed that the temperature measurement accuracy of the proposed method can reach 0.3 °C, with imaging depths up to 2 and 0.65 cm in tissue-mimicking phantoms and mouse tumor tissue, respectively. In addition, it was verified through PT therapy experiments in mice that the proposed method can achieve extremely high PT therapy efficiency by monitoring the temperature of the target area during PT therapy. This work provides a potential demonstration promoting precise cancer PT therapy through quantitative 3D temperature rendering of deep tumors by PA NThems with higher security and higher efficacy.
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Affiliation(s)
- Ting Sun
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Zhenhui Zhang
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Dandan Cui
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Gen Mu
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Xiaodong Sun
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Xiaoye Su
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
| | - Yujiao Shi
- MOE Key Laboratory of Laser Life Science & Institute of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
- Guangdong Provincial Key Laboratory of Laser Life Science, College of Biophotonics, South China Normal University, Guangzhou 510631, China
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10
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Zhang Z, Zhang L, Zhou Y, Cui Y, Chen Z, Liu Y, Li J, Long Y, Gao Y. Thermochromic Energy Efficient Windows: Fundamentals, Recent Advances, and Perspectives. Chem Rev 2023. [PMID: 37053573 DOI: 10.1021/acs.chemrev.2c00762] [Citation(s) in RCA: 17] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2023]
Abstract
Thermochromic energy efficient windows represent an important protocol technology for advanced architectural windows with energy-saving capabilities through the intelligent regulation of indoor solar irradiation and the modulation of window optical properties in response to real-time temperature stimuli. In this review, recent progress in some promising thermochromic systems is summarized from the aspects of structures, the micro-/mesoscale regulation of thermochromic properties, and integration with other emerging energy techniques. Furthermore, the challenges and opportunities in thermochromic energy-efficient windows are outlined to promote future scientific investigations and practical applications in building energy conservation.
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Affiliation(s)
- Zongtao Zhang
- School of Materials Science and Engineering, Zhengzhou University, Kexue Avenue 100, Zhengzhou 450001, China
| | - Liangmiao Zhang
- School of Materials Science and Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Yang Zhou
- State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China
| | - Yuanyuan Cui
- School of Materials Science and Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Zhang Chen
- School of Materials Science and Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
| | - Yinping Liu
- State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China
| | - Jin Li
- School of Materials Science and Engineering, Zhengzhou University, Kexue Avenue 100, Zhengzhou 450001, China
| | - Yi Long
- School of Materials Science and Engineering, Nanyang Technological University, 639798, Singapore
- Department of Electronic Engineering, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong SAR 999077, China
| | - Yanfeng Gao
- School of Materials Science and Engineering, Shanghai University, Shangda Road 99, Shanghai 200444, China
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11
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Ding Y, Pang Z, Lan K, Yao Y, Panzarasa G, Xu L, Lo Ricco M, Rammer DR, Zhu JY, Hu M, Pan X, Li T, Burgert I, Hu L. Emerging Engineered Wood for Building Applications. Chem Rev 2023; 123:1843-1888. [PMID: 36260771 DOI: 10.1021/acs.chemrev.2c00450] [Citation(s) in RCA: 21] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The building sector, including building operations and materials, was responsible for the emission of ∼11.9 gigatons of global energy-related CO2 in 2020, accounting for 37% of the total CO2 emissions, the largest share among different sectors. Lowering the carbon footprint of buildings requires the development of carbon-storage materials as well as novel designs that could enable multifunctional components to achieve widespread applications. Wood is one of the most abundant biomaterials on Earth and has been used for construction historically. Recent research breakthroughs on advanced engineered wood products epitomize this material's tremendous yet largely untapped potential for addressing global sustainability challenges. In this review, we explore recent developments in chemically modified wood that will produce a new generation of engineered wood products for building applications. Traditionally, engineered wood products have primarily had a structural purpose, but this review broadens the classification to encompass more aspects of building performance. We begin by providing multiscale design principles of wood products from a computational point of view, followed by discussion of the chemical modifications and structural engineering methods used to modify wood in terms of its mechanical, thermal, optical, and energy-related performance. Additionally, we explore life cycle assessment and techno-economic analysis tools for guiding future research toward environmentally friendly and economically feasible directions for engineered wood products. Finally, this review highlights the current challenges and perspectives on future directions in this research field. By leveraging these new wood-based technologies and analysis tools for the fabrication of carbon-storage materials, it is possible to design sustainable and carbon-negative buildings, which could have a significant impact on mitigating climate change.
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Affiliation(s)
- Yu Ding
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland20742, United States
| | - Zhenqian Pang
- Department of Mechanical Engineering, University of Maryland, College Park, Maryland20742, United States
| | - Kai Lan
- Center for Industrial Ecology, Yale School of the Environment, Yale University, New Haven, Connecticut06511, United States
| | - Yuan Yao
- Center for Industrial Ecology, Yale School of the Environment, Yale University, New Haven, Connecticut06511, United States
| | - Guido Panzarasa
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093Zürich, Switzerland.,WoodTec Group, Cellulose & Wood Materials, Empa, 8600Dübendorf, Switzerland
| | - Lin Xu
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland20742, United States
| | - Marco Lo Ricco
- US Department of Agriculture (USDA) Forest Products Laboratory, Madison, Wisconsin53726, United States
| | - Douglas R Rammer
- US Department of Agriculture (USDA) Forest Products Laboratory, Madison, Wisconsin53726, United States
| | - J Y Zhu
- US Department of Agriculture (USDA) Forest Products Laboratory, Madison, Wisconsin53726, United States
| | - Ming Hu
- School of Architecture, Planning and Preservation, University of Maryland, College Park, Maryland20742, United States
| | - Xuejun Pan
- Department of Biological Systems Engineering, University of Wisconsin─Madison, Madison, Wisconsin53706, United States
| | - Teng Li
- Department of Mechanical Engineering, University of Maryland, College Park, Maryland20742, United States
| | - Ingo Burgert
- Wood Materials Science, Institute for Building Materials, ETH Zürich, 8093Zürich, Switzerland.,WoodTec Group, Cellulose & Wood Materials, Empa, 8600Dübendorf, Switzerland
| | - Liangbing Hu
- Department of Materials Science and Engineering, University of Maryland, College Park, Maryland20742, United States.,Center for Materials Innovation, University of Maryland, College Park, Maryland20742, United States
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12
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Optically Transparent Bamboo: Preparation, Properties, and Applications. Polymers (Basel) 2022; 14:polym14163234. [PMID: 36015491 PMCID: PMC9415768 DOI: 10.3390/polym14163234] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 07/31/2022] [Accepted: 08/02/2022] [Indexed: 11/29/2022] Open
Abstract
The enormous pressures of energy consumption and the severe pollution produced by non-renewable resources have prompted researchers to develop various environmentally friendly energy-saving materials. Transparent bamboo represents an emerging result of biomass material research that has been identified and studied for its many advantages, including light weight, excellent light transmittance, environmental sustainability, superior mechanical properties, and low thermal conductivity. The present review summarizes methods for preparing transparent bamboo, including delignification and resin impregnation. Next, transparent bamboo performance is quantified in terms of optical, mechanical, and thermal conductivity characteristics and compared with other conventional and emerging synthetic materials. Potential applications of transparent bamboo are then discussed using various functionalizations achieved through doping nanomaterials or modified resins to realize advanced energy-efficient building materials, decorative elements, and optoelectronic devices. Finally, challenges associated with the preparation, performance improvement, and production scaling of transparent bamboo are summarized, suggesting opportunities for the future development of this novel, bio-based, and advanced material.
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13
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Ding L, Han X, Chen L, Jiang S. Preparation and properties of hydrophobic and transparent wood. JOURNAL OF BIORESOURCES AND BIOPRODUCTS 2022. [DOI: 10.1016/j.jobab.2022.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022] Open
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14
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Lanfranchi A, Megahd H, Lova P, Comoretto D. Multilayer Polymer Photonic Aegises Against Near-Infrared Solar Irradiation Heating. ACS APPLIED MATERIALS & INTERFACES 2022; 14:14550-14560. [PMID: 35306809 PMCID: PMC8972252 DOI: 10.1021/acsami.1c25037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2021] [Accepted: 02/24/2022] [Indexed: 05/30/2023]
Abstract
Preventing solar heating is nowadays of paramount interest in energy savings and health preservation. For instance, in building thermalization solar heating consumes an excess of energy leading to harmful CO2 emissions, while in food and beverage packaging it may lead to variation of organoleptic properties or even health issues. The phenomenon is attributed to the large presence of moieties with highly absorbing vibrational overtones and combination bands in the near-infrared spectral region that induces heating in water, moisture, and in polymers used in packaging. Thus, reducing and controlling the light absorbed by these materials with effective low-cost passive systems can play a major role in energy saving and health preservation. In this work, different polymer dielectric mirrors are reported, made of poly(N-vinylcarbazole) and either cellulose acetate or poly(acrylic acid), and able to selectively reflect near-infrared radiation while maintaining high transparency in the visible range. To this end, simple, tandem, and superperiodic mirrors are used to shield radiation impinging on samples of water and paraffin, demonstrating shielding efficiencies up to 52% with respect to unshielded references, promising a new paradigm to solve thermal management issues.
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15
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Reversible Photo-, Thermal-, and pH-Responsive Functionalized Wood with Fluorescence Emission. MATERIALS 2022; 15:ma15031229. [PMID: 35161173 PMCID: PMC8840444 DOI: 10.3390/ma15031229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/15/2021] [Revised: 01/29/2022] [Accepted: 02/01/2022] [Indexed: 11/17/2022]
Abstract
A reversible photo-, thermal-, and pH-responsive high-performance functional wood with fluorescence has been prepared. The properties, structure, multi-response, fluorescence, water resistance, and corrosion resistance of original wood (ORW) and functional wood (FUW) were investigated with an X-ray photoelectron spectroscopy (XPS) spectrometer, a Fourier-transform infrared (FTIR) spectrometer, a N2 adsorption–desorption analyzer, an atomic force microscope (AFM), tensile tests, a scanning electron microscope (SEM), an ultraviolet–visible (UV–Vis) spectrophotometer, a fluorescence spectrometer, the equilibrium swelling ratio (ESR), and corrosion tests. The results of XPS, FTIR, N2 adsorption–desorption, and AFM exhibited that FUW was successfully prepared. Additionally, the results of the tensile test and SEM revealed that FUW had better mechanical properties than ORW, due to the filling of epoxy resin in the pores of the wood. Moreover, the UV–Vis and fluorescence spectra demonstrated that the introduction of epoxy resin induced multi-response and fluorescence functions to FUW. Furthermore, the data of ESR and corrosion test showed that the introduction of epoxy resin greatly improved the water and corrosion resistance of wood. This study provides ideas and methods for preparing novel high-performance multi-response FUW.
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16
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Wu Y, Wang J, Wang Y, Zhou J. Properties of Multilayer Transparent Bamboo Materials. ACS OMEGA 2021; 6:33747-33756. [PMID: 34926923 PMCID: PMC8675012 DOI: 10.1021/acsomega.1c05014] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Accepted: 11/24/2021] [Indexed: 05/04/2023]
Abstract
The objective of this study is to solve the shortcomings of the current transparent bamboo veneer with a small thickness and low light transmittance by means of lamination. The delignified bamboo templates were vacuum impregnated with an epoxy resin, and the impregnated bamboo templates were laminated with the same radial texture using the viscosity of the epoxy resin to obtain multilayer transparent bamboo (MLTB). The multilayer stacking method can greatly improve the optical and mechanical properties of transparent bamboo. The transparent bamboo with a thickness of 1.2 mm and the delignified bamboo with a volume fraction of 44.8% prepared by multilayer stacking exhibited an improved total optical transmissivity of up to 78.6%, while the highest transmittance of bamboo (0.9 mm thick) without multilayer stacking treatment was only 10.4%. Compared with the single-layer transparent bamboo with a thickness of 2.1 mm, the maximum tensile strength of the seven-layer transparent bamboo was 4 times that of the single-layer transparent bamboo. Therefore, MLTB can compensate to a certain extent for the low light transmission and poor mechanical properties of single-layer transparent bamboo. Overall, MLTB shows a richer and more layered texture, which has more esthetic value. It is a kind of natural transparent material with good light transmittance and excellent mechanical properties, which has a good development prospect as a structural material in the fields of construction, household, and electronic products.
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17
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Wang J, Zhu J. Prospects and Applications of Biomass-Based Transparent Wood: An Architectural Glass Perspective. Front Chem 2021; 9:747385. [PMID: 34746092 PMCID: PMC8564398 DOI: 10.3389/fchem.2021.747385] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/26/2021] [Accepted: 10/06/2021] [Indexed: 11/28/2022] Open
Abstract
This paper briefly discussed the research progress of biomass-based transparent wood (BBTW), and summarized the key technologies and potential application prospects of BBTW in replacing architectural glass. Based on the introduction of the preparation process of BBTW, the advantages of BBTW and their feasibility to replace architectural glass are illustrated with a view to the requirements and conditions of architectural glass for different use functions. The limitations of BBTW are discussed and the development prospects of BBTW are also prospected. The research shows that BBTW has the advantages of green and renewable materials that can meet the requirements of good lighting conditions, flame retardant, heat insulation and safety, which are in line with the sustainable development trend. Further studies are needed to continuously break through its limitations with an aim to expand the application of this new biomass-based material.
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Affiliation(s)
- Jing Wang
- College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing, China
| | - Jian'gang Zhu
- College of Furnishings and Industrial Design, Nanjing Forestry University, Nanjing, China
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18
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Gong S, Li X, Sheng M, Liu S, Zheng Y, Wu H, Lu X, Qu J. High Thermal Conductivity and Mechanical Strength Phase Change Composite with Double Supporting Skeletons for Industrial Waste Heat Recovery. ACS APPLIED MATERIALS & INTERFACES 2021; 13:47174-47184. [PMID: 34558896 DOI: 10.1021/acsami.1c15670] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The "solid-liquid" leakage and low thermal conductivity of organic phase change materials limit their wide range of applications. In this paper, a novel carbon fiber/boron nitride (CF/BN)-based nested structure was constructed, and then, a series of poly(ethylene glycol) (PEG)-based phase change composites (PCCs) with high thermal conductivity and mechanical strength were prepared via the simple vacuum adsorption technology by employing the CF/BN nested structure as the heat conduction path and supporting material and the in situ obtained cross-linking epoxy resin as another supporting material. The thermal conductivity of the obtained PCC is as high as 0.81 W/m K, which is 7.4 times higher than that sample without the CF/BN nested structure. The support of the double skeletons confers the obtained PCCs with excellent mechanical strength. Surprisingly, there is not any deformation for PCCs under the pressure of 128.5 times its own weight during the phase change process. In addition, the phase change enthalpy of the obtained PCC is as high as 107.9 J/g. All the results indicate that the obtained PEG-based PCCs possess huge application potential in the field of industrial waste heat recovery.
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Affiliation(s)
- Shang Gong
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science & Technology, Ministry of Education, Wuhan 430074, P. R. China
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
- Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
| | - Xiaolong Li
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science & Technology, Ministry of Education, Wuhan 430074, P. R. China
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
- Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
| | - Mengjie Sheng
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science & Technology, Ministry of Education, Wuhan 430074, P. R. China
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
- Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
| | - Shuang Liu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science & Technology, Ministry of Education, Wuhan 430074, P. R. China
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
- Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
| | - Yongfeng Zheng
- National Engineering Research Center of Novel Equipment for Polymer Processing, Key Laboratory of Polymer Processing Engineering (South China University of Technology), Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China
| | - Hao Wu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science & Technology, Ministry of Education, Wuhan 430074, P. R. China
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
- Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
| | - Xiang Lu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science & Technology, Ministry of Education, Wuhan 430074, P. R. China
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
- Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
| | - Jinping Qu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Huazhong University of Science & Technology, Ministry of Education, Wuhan 430074, P. R. China
- Hubei Engineering Research Center for Biomaterials and Medical Protective Materials, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
- Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science & Technology, Wuhan 430074, P. R. China
- National Engineering Research Center of Novel Equipment for Polymer Processing, Key Laboratory of Polymer Processing Engineering (South China University of Technology), Ministry of Education, Guangdong Provincial Key Laboratory of Technique and Equipment for Macromolecular Advanced Manufacturing, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510641, China
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19
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Li B, Li L, Ren H, Lu Y, Peng F, Chen Y, Hu C, Zhang G, Zou C. Photoassisted Electron-Ion Synergic Doping Induced Phase Transition of n-VO 2/p-GaN Thin-Film Heterojunction. ACS APPLIED MATERIALS & INTERFACES 2021; 13:43562-43572. [PMID: 34468117 DOI: 10.1021/acsami.1c10401] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
As a typical correlated metal oxide, vanadium dioxide (VO2) shows specific metal-insulator transition (MIT) properties and demonstrates great potential applications in ultrafast optoelectronic switch, resistive memory, and neuromorphic devices. Effective control of the MIT process is essential for improving the device performance. In the current study, we have first proposed a photoassisted ion-doping method to modulate the phase transition of the VO2 layer based on the photovoltaic effect and electron-ion synergic doping in acid solution. Experimental results show that, for the prepared n-VO2/p-GaN nanojunction, this photoassisted strategy can effectively dope the n-VO2 layer by H+, Al3+, or Mg2+ ions under light radiation and trigger consecutive insulator-metal-insulator transitions. If combined with standard lithography or electron beam etching processes, selective doping with nanoscale size area can also be achieved. This photoassisted doping method not only shows a facile route for MIT modulation via a doping route under ambient conditions but also supplies some clues for photosensitive detection in the future.
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Affiliation(s)
- Bowen Li
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Liang Li
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Hui Ren
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Yuan Lu
- State Key Laboratory of Pulsed Power Laser Technology, NUDT, Hefei 230037, P. R. China
- Infrared and Low Temperature Plasma Key Laboratory of Anhui Province, NUDT, Hefei 230037, P. R. China
| | - Fangfang Peng
- Center for Micro- and Nanoscale Research and Fabrication, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Yuliang Chen
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Changlong Hu
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Guobin Zhang
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
- Anhui Laboratory of Advanced Photon Science and Technology, University of Science and Technology of China, Hefei 230029, P. R. China
| | - Chongwen Zou
- National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, P. R. China
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20
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Chen Z, Zhang S, Ding M, Wang M, Xu X. Construction of a Phytic Acid-Silica System in Wood for Highly Efficient Flame Retardancy and Smoke Suppression. MATERIALS (BASEL, SWITZERLAND) 2021; 14:4164. [PMID: 34361358 PMCID: PMC8347795 DOI: 10.3390/ma14154164] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Revised: 07/08/2021] [Accepted: 07/13/2021] [Indexed: 11/16/2022]
Abstract
The intrinsic flammability of wood restricts its application in various fields. In this study, we constructed a phytic acid (PA)-silica hybrid system in wood by a vacuum-pressure impregnation process to improve its flame retardancy and smoke suppression. The system was derived from a simple mixture of PA and silica sol. Fourier transform infrared spectroscopy (FTIR) indicated an incorporation of the PA molecules into the silica network. Thermogravimetric (TG) analysis showed that the system greatly enhanced the char yield of wood from 1.5% to 32.1% (in air) and the thermal degradation rates were decreased. The limiting oxygen index (LOI) of the PA/silica-nanosol-treated wood was 47.3%. Cone calorimetry test (CCT) was conducted, which revealed large reductions in the heat release rate and smoke production rate. The appearance of the second heat release peak was delayed, indicating the enhanced thermal stability of the char residue. The mechanism underlying flame retardancy was analyzed by field-emission scanning electron microscope coupled with energy-dispersive spectroscopy (SEM-EDS), FTIR, and TG-FTIR. The improved flame retardancy and smoke-suppression property of the wood are mainly attributed to the formation of an intact and coherent char residue with crosslinked structures, which can protect against the transfer of heat and mass (flammable gases, smoke) during burning. Moreover, the hybrid system did not significantly alter the mechanical properties of wood, such as compressive strength and hardness. This approach can be extended to fabricate other phosphorus and silicon materials for enhancing the fire safety of wood.
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Affiliation(s)
| | | | | | - Mingzhi Wang
- College of Materials Science and Technology, Beijing Forestry University, Beijing 100083, China; (Z.C.); (S.Z.); (M.D.); (X.X.)
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21
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Montanari C, Ogawa Y, Olsén P, Berglund LA. High Performance, Fully Bio-Based, and Optically Transparent Wood Biocomposites. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2021; 8:2100559. [PMID: 34194952 PMCID: PMC8224414 DOI: 10.1002/advs.202100559] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/09/2021] [Revised: 03/15/2021] [Indexed: 05/05/2023]
Abstract
The sustainable development of engineering biocomposites has been limited due to a lack of bio-based monomers combining favorable processing with high performance. Here, the authors report a novel and fully bio-based transparent wood biocomposite based on green synthesis of a new limonene acrylate monomer from renewable resources. The monomer is impregnated and readily polymerized in a delignified, succinylated wood substrate to form optically transparent biocomposites. The chemical structure of the limonene acrylate enables diffusion into the cell wall, and the polymer phase is both refractive index-matched and covalently linked to the wood substrate. This results in nanostructured biocomposites combining an excellent optical transmittance of 90% at 1.2 mm thickness and a remarkably low haze of 30%, with a high mechanical performance (strength 174 MPa, Young's modulus 17 GPa). Bio-based transparent wood holds great potential towards the development of sustainable wood nanotechnologies for structural applications, where transparency and mechanical performance are combined.
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Affiliation(s)
- Céline Montanari
- Department of Fibre and Polymer TechnologyWallenberg Wood Science CenterKTH Royal Institute of TechnologyTeknikringen 56Stockholm10044Sweden
| | - Yu Ogawa
- Université Grenoble AlpesCNRSCERMAVGrenoble38000France
| | - Peter Olsén
- Department of Fibre and Polymer TechnologyWallenberg Wood Science CenterKTH Royal Institute of TechnologyTeknikringen 56Stockholm10044Sweden
| | - Lars A. Berglund
- Department of Fibre and Polymer TechnologyWallenberg Wood Science CenterKTH Royal Institute of TechnologyTeknikringen 56Stockholm10044Sweden
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22
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Liu S, Tso CY, Lee HH, Du YW, Yu KM, Feng SP, Huang B. Self-Densified Optically Transparent VO 2 Thermochromic Wood Film for Smart Windows. ACS APPLIED MATERIALS & INTERFACES 2021; 13:22495-22504. [PMID: 33969687 DOI: 10.1021/acsami.1c03803] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Optically transparent wood has emerged as a promising glazing material. Thanks to the high optical transmittance, strong mechanical properties, and excellent thermal insulation capability of transparent wood, it offers a potential alternative to glass for window applications. Recently, thermo-, electro-, and photochromic transparent woods that dynamically modulate light transmittance have been investigated to improve building energy efficiency. However, it remains challenging to widely replace windows with transparent wood because of its poor weather resistance. In this study, an environment-friendly thermochromic transparent wood film (TTWF) with thermal switching of transmittance is proposed and demonstrated. To achieve thermochromism, the bleached wood is impregnated with the vanadium dioxide (VO2)/polyvinyl alcohol composite. Due to the self-densification of cellulose microfibrils during the evaporation of solvents, the transparent wood is in the form of thin films, which can be attached on the inner face of a window to protect it from severe weather conditions, making the installation convenient and low-cost. Furthermore, the surface of VO2-TTWF is modified by octadecyltrichlorosilane to enhance the waterproof ability and achieve self-cleaning and antidust functions. The proposed VO2-TTWF shows great potential for application in energy-efficient buildings using sustainable materials with advanced optical properties (i.e., Tlum = 50.5%, ΔTsol = 3.4%, and haze = 70%) that are mechanically robust (i.e., σ = 130.6 MPa along the wood growth direction), have low-thermal conductivity (i.e., K = 0.29 W m-1 K-1 along the perpendicular direction to the wood fibers), and demonstrate hydrophobic self-cleaning and antidust functions (i.e., contact angle: 121.9°). An experiment, using a model house, showed that the VO2-TTWF attached on the inner face of the window could significantly reduce the indoor air temperature by 33.9 °C compared with a bare glass panel, proving that VO2-TTWF has potential to be applied as a new-generation energy-efficient material for smart windows.
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Affiliation(s)
- Sai Liu
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China
| | - Chi Yan Tso
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China
| | - Hau Him Lee
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China
| | - Yu Wei Du
- School of Energy and Environment, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China
| | - Kin Man Yu
- Department of Physics, City University of Hong Kong, Tat Chee Avenue, Kowloon Tong, Hong Kong, China
| | - Shien-Ping Feng
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam, Hong Kong, China
| | - Baoling Huang
- Department of Mechanical and Aerospace Engineering, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, China
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23
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Xiao Y, Luo H, Tang R, Hou J. Preparation and Applications of Electrospun Optically Transparent Fibrous Membrane. Polymers (Basel) 2021; 13:506. [PMID: 33567610 PMCID: PMC7915363 DOI: 10.3390/polym13040506] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2021] [Revised: 02/01/2021] [Accepted: 02/03/2021] [Indexed: 02/07/2023] Open
Abstract
The optically transparent electrospun fibrous membrane has been widely used in many fields due to its simple operation, flexible design, controllable structure, high specific surface area, high porosity, and unique excellent optical properties. This paper comprehensively summarizes the preparation methods and applications of an electrospun optically transparent fibrous membrane in view of the selection of raw materials and structure modulation during preparation. We start by the factors that affect transmittance among different materials and explain the light transmission mechanism of the fibrous membrane. This paper also provides an overview of the methods to fabricate a transparent nanofibrous membrane based on the electrospinning technology including direct electrospinning, solution treatment after electrospinning, heat treatment after electrospinning, and surface modification after electrospinning. It further summarizes the differences in the processes and mechanisms between different transparent fibrous membranes prepared by different methods. Additionally, we study the utilization of transparent as-spun membranes as flexible functional materials, namely alcohol dipstick, air purification, self-cleaning materials, biomedicine, sensors, energy and optoelectronics, oil-water separation, food packaging, anti-icing coating, and anti-corrosion materials. It demonstrates the high transparency of the nanofibers' effects on the applications as well as upgrades the product performance.
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Affiliation(s)
| | | | | | - Jiazi Hou
- Key Laboratory of Automobile Materials, Ministry of Education, College of Materials Science and Engineering, Jilin University, Changchun 130025, China; (Y.X.); (H.L.); (R.T.)
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24
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Samanta A, Chen H, Samanta P, Popov S, Sychugov I, Berglund LA. Reversible Dual-Stimuli-Responsive Chromic Transparent Wood Biocomposites for Smart Window Applications. ACS APPLIED MATERIALS & INTERFACES 2021; 13:3270-3277. [PMID: 33415982 PMCID: PMC7821267 DOI: 10.1021/acsami.0c21369] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2020] [Accepted: 12/30/2020] [Indexed: 05/21/2023]
Abstract
Transparent wood (TW)-based composites are of significant interest for smart window applications. In this research, we demonstrate a facile dual-stimuli-responsive chromic TW where optical properties are reversibly controlled in response to changes in temperature and UV-radiation. For this functionality, bleached wood was impregnated with solvent-free thiol and ene monomers containing chromic components, consisting of a mixture of thermo- and photoresponsive chromophores, and was then UV-polymerized. Independent optical properties of individual chromic components were retained in the compositional mixture. This allowed to enhance the absolute optical transmission to 4 times above the phase change temperature. At the same time, the transmission at 550 nm could be reduced 11-77%, on exposure to UV by changing the concentration of chromic components. Chromic components were localized inside the lumen of the wood structure, and durable reversible optical properties were demonstrated by multiple cycling testing. In addition, the chromic TW composites showed reversible energy absorption capabilities for heat storage applications and demonstrated an enhancement of 64% in the tensile modulus as compared to a native thiol-ene polymer. This study elucidates the polymerization process and effect of chromic components distribution and composition on the material's performance and perspectives toward the development of smart photoresponsive windows with energy storage capabilities.
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Affiliation(s)
- Archana Samanta
- Department
of Applied Physics, KTH Royal Institute
of Technology, Stockholm 114 19, Sweden
| | - Hui Chen
- Department
of Fibre and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
| | - Pratick Samanta
- Department
of Fibre and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
| | - Sergei Popov
- Department
of Applied Physics, KTH Royal Institute
of Technology, Stockholm 114 19, Sweden
| | - Ilya Sychugov
- Department
of Applied Physics, KTH Royal Institute
of Technology, Stockholm 114 19, Sweden
| | - Lars A. Berglund
- Department
of Applied Physics, KTH Royal Institute
of Technology, Stockholm 114 19, Sweden
- Department
of Fibre and Polymer Technology, Wallenberg Wood Science Center, KTH Royal Institute of Technology, Stockholm 100 44, Sweden
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