1
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Zhou B, Yuan W. Tunable thermoresponsive and stretchable hydrogel sensor based on hydroxypropyl cellulose for human motion/health detection, visual signal transmission and information encryption. Carbohydr Polym 2024; 343:122497. [PMID: 39174144 DOI: 10.1016/j.carbpol.2024.122497] [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: 05/20/2024] [Revised: 07/12/2024] [Accepted: 07/13/2024] [Indexed: 08/24/2024]
Abstract
Thermoresponsive hydrogels can be used as smart flexible sensors. However, the design and facile preparation of multifunctional thermoresponsive hydrogel sensors still face great challenges. Herein, a tunable thermoresponsive, thermochromic and stretchable poly(2-hydroxypropyl acrylate-co-acrylamide) (P(HPA-co-AM))/hydroxypropyl cellulose (HPC)/lithium chloride (LiCl) hydrogel with the networks constructed from non-covalent interaction was fabricated by photopolymerization. PHPA exhibits excellent thermoresponsiveness. HPC endows the hydrogel with outstanding mechanical performance and enhanced temperature-sensitivity. LiCl not only provides good conductivity, but also regulates the lower critical solution temperature (LCST) of the hydrogel. The hydrogel shows tensile strength up to 300 kPa and maximum strain up to 790 %. The LCST value of the hydrogel can be adjusted from 38 to 75 °C. Therefore, the thermoresponsive conductive hydrogel can realize the information encryption, and be used as sensor through strain and temperature changes in the external environment to realize the motion and health detection, and visual signal transmission. This work is expected to provide ideas for the next generation of smart multifunctional electronic skin and information encryption device.
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Affiliation(s)
- Bo Zhou
- School of Materials Science and Engineering, Key Laboratory of Advanced Civil Materials of Ministry of Education, Tongji University, Shanghai 201804, People's Republic of China
| | - Weizhong Yuan
- School of Materials Science and Engineering, Key Laboratory of Advanced Civil Materials of Ministry of Education, Tongji University, Shanghai 201804, People's Republic of China.
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2
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Wang K, Dai P, Zhang N, Dong Y, Zhao B, Wang J, Zhang X, Tu Q. An injectable hydrogel based on sodium alginate and gelatin treats bacterial keratitis through multimodal antibacterial strategy. Int J Biol Macromol 2024; 275:133595. [PMID: 38960253 DOI: 10.1016/j.ijbiomac.2024.133595] [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: 01/30/2024] [Revised: 06/24/2024] [Accepted: 06/29/2024] [Indexed: 07/05/2024]
Abstract
Bacterial keratitis is among the most prevalent causes of blindness. Currently, the abuse of antibiotics in clinical settings not only lacks bactericidal effects but also readily induces bacterial resistance, making the clinical treatment of bacterial keratitis a significant challenge. In this study, we present an injectable hydrogel (GS-PNH-FF@CuS/MnS) containing self-assembled diphenylalanine dipeptide (FF) and CuS/MnS nanocomposites (CuS/MnS NCs) that destroy bacterial cell walls through a synergistic combination of mild photothermal therapy (PTT), chemodynamic therapy (CDT), ion release chemotherapy, and self-assembled dipeptide contact, thereby eliminating Pseudomonas aeruginosa. Under 808 nm laser irradiation, the bactericidal efficiency of GS-PNH-FF@CuS/MnS hydrogel against P. aeruginosa in vitro reach up to 96.97 %. Furthermore, GS-PNH-FF@CuS/MnS hydrogel is applied topically to kill bacteria, reduce inflammation, and promote wound healing. Hematoxylin-eosin (H&E) staining, Masson staining, immunohistochemistry and immunofluorescence staining are used to evaluate the therapeutic effect on infected rabbit cornea models in vivo. The GS-PNH-FF@CuS/MnS demonstrate good biocompatibility with human corneal epithelial cells and exhibit no obvious eyes side effects. In conclusion, the GS-PNH-FF@CuS/MnS hydrogel in this study provides an effective and safe treatment strategy for bacterial keratitis through a multimodal approach.
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Affiliation(s)
- Keke Wang
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Pengxiu Dai
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Nannan Zhang
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Yuchuan Dong
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Bin Zhao
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Jinyi Wang
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Xinke Zhang
- College of Veterinary Medicine, Northwest A&F University, Yangling, Shaanxi 712100, China.
| | - Qin Tu
- College of Chemistry and Pharmacy, Northwest A&F University, Yangling, Shaanxi 712100, China.
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3
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Sun M, Sun H, Wei R, Li W, Lai J, Tian Y, Li M. Energy-Efficient Smart Window Based on a Thermochromic Hydrogel with Adjustable Critical Response Temperature and High Solar Modulation Ability. Gels 2024; 10:494. [PMID: 39195023 DOI: 10.3390/gels10080494] [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: 06/30/2024] [Revised: 07/19/2024] [Accepted: 07/25/2024] [Indexed: 08/29/2024] Open
Abstract
Thermochromic smart windows realize an intelligent response to changes in environmental temperature through reversible physical phase transitions. They complete a real-time adjustment of solar transmittance, create a livable indoor temperature for humans, and reduce the energy consumption of buildings. Nevertheless, conventional materials that are used to prepare thermochromic smart windows face challenges, including fixed transition temperatures, limited solar modulation capabilities, and inadequate mechanical properties. In this study, a novel thermochromic hydrogel was synthesized from 2-hydroxy-3-butoxypropyl hydroxyethyl celluloses (HBPEC) and poly(N-isopropylacrylamide) (PNIPAM) by using a simple one-step low-temperature polymerization method. The HBPEC/PNIPAM hydrogel demonstrates a wide response temperature (24.1-33.2 °C), high light transmittance (Tlum = 87.5%), excellent solar modulation (ΔTsol = 71.2%), and robust mechanical properties. HBPEC is a functional material that can be used to adjust the lower critical solution temperature (LCST) of the smart window over a wide range by changing the degree of substitution (DS) of the butoxy group in its structure. In addition, the use of HBPEC effectively improves the light transmittance and mechanical properties of the hydrogels. After 100 heating and cooling cycles, the hydrogel still has excellent stability. Furthermore, indoor simulation experiments show that HBPEC/PNIPAM hydrogel smart windows have better indoor temperature regulation capabilities than traditional windows, making these smart windows potential candidates for energy-saving building materials.
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Affiliation(s)
- Meng Sun
- Key Laboratory of Environment Controlled Aquaculture, (Dalian Ocean University) Ministry of Education, Dalian 116023, China
- College of Marine Technology and Environment, Dalian Ocean University, Dalian 116023, China
| | - Hui Sun
- Key Laboratory of Environment Controlled Aquaculture, (Dalian Ocean University) Ministry of Education, Dalian 116023, China
- College of Marine Technology and Environment, Dalian Ocean University, Dalian 116023, China
| | - Ruoyu Wei
- College of Marine Technology and Environment, Dalian Ocean University, Dalian 116023, China
| | - Wenqing Li
- College of Marine Technology and Environment, Dalian Ocean University, Dalian 116023, China
| | - Jinlai Lai
- College of Marine Technology and Environment, Dalian Ocean University, Dalian 116023, China
| | - Ye Tian
- Key Laboratory of Environment Controlled Aquaculture, (Dalian Ocean University) Ministry of Education, Dalian 116023, China
- College of Marine Technology and Environment, Dalian Ocean University, Dalian 116023, China
- College of Biosystems Engineering and Food Science, Zhejiang University, Hangzhou 310058, China
| | - Miao Li
- School of Biological Engineering, Dalian Polytechnic University, Dalian 116034, China
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4
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Wu P, Zhou H, Gao Y, Chen Y, Wang K, Wei C, Zhang H, Jin X, Ma A, Chen W, Liu H. Double layered asymmetrical hydrogels enhanced by thermosensitive microgels for high-performance mechanosensors and actuators. J Colloid Interface Sci 2024; 662:976-985. [PMID: 38382380 DOI: 10.1016/j.jcis.2024.02.115] [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: 11/14/2023] [Revised: 01/11/2024] [Accepted: 02/13/2024] [Indexed: 02/23/2024]
Abstract
Thermosensitive hydrogels have found extensive applications in soft devices, but they often suffer from limited functionalities, low response rate and small response amplitude. In this work, double layered asymmetrical hydrogels composed of a thermosensitive layer and a non-thermosensitive layer are developed to simultaneously achieve high-performance mechanosensing and actuating properties in a single hydrogel. In thermosensitive layer, thermosensitive microgels are introduced to construct hierarchical structure, which accounts for the enhanced thermosensitive behaviors by cooperative responsiveness. In non-thermosensitive layer, poly(acrylamide-co-acrylic acid) (P(AM-co-AA)) hydrogel is constructed. KCl is introduced as conductive component. Mechanosensors for monitoring various mechanical stimuli in daily life have been fabricated utilizing such hydrogels and high gauge factors (GF) have been achieved, 0.38 for resistive strain sensors, 9.40 kPa-1 for piezoresistive pressure sensors and 3.92 kPa-1 for capacitive pressure sensors. Because of the asymmetrical structure, such hydrogels also exhibit outstanding actuating properties with a fast response rate of 863°/min and a bending amplitude about 360°. Interestingly, grasping-releasing of target objects utilizing an octopus-shaped hydrogel actuator and temperature alerting based on hydrogel actuator are also demonstrated. Overall, the double layered asymmetrical ionic hydrogels have provided a new clue to construct hydrogel devices with multiple functionalities and enhanced response properties.
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Affiliation(s)
- Ping Wu
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Hongwei Zhou
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China.
| | - Yang Gao
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Yuru Chen
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Kexuan Wang
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Chuanjuan Wei
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Hongli Zhang
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Xilang Jin
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Aijie Ma
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Weixing Chen
- Shaanxi Key Laboratory of Photoelectric Functional Materials and Devices, Engineering Research Center of Light Stabilizers for Polymer Materials Universities of Shaanxi Province, School of Materials and Chemical Engineering, Xi'an Technological University, Xi'an 710021, China
| | - Hanbin Liu
- Shaanxi Provincial Key Laboratory of Papermaking Technology and Specialty Paper Development, College of Bioresource Chemical and Materials Engineering, Shaanxi University of Science & Technology, Xi'an 710021, China
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5
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Wang H, Wang Q, Su Y, Wang J, Zhang X, Liu Y, Zhang J. Thermosensitive Triblock Copolymer for Slow-Release Lubricants under Ocular Conditions. ACS APPLIED MATERIALS & INTERFACES 2024; 16:1675-1687. [PMID: 38127457 DOI: 10.1021/acsami.3c12389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
The ocular environment is crucial for a biological lubrication system. An unstable condition of tear film may cause a series of ocular diseases due to serious friction, such as dry eye syndrome, which has drawn extensive attention nowadays. In this study, an in vitro biocompatible superlubricity system, containing thermogelling copolymers (PCGA-PEG-PCGA) and slow-release lubricant (PEG 300/Tween 80), was constructed. First, the sol-gel transition temperature and gel strength of PCGA-PEG-PCGA were adjusted based on the ocular environment by regulating the length of PCGA blocks. Furthermore, the copolymer hydrogel exhibited a reliable slow-release property within 10 days and showed low cytotoxicity. Then, the superlubricity (coefficient of friction of approximately 0.005) was achieved with its released PEG 300/Tween 80 aqueous solution at the sliding velocity range of 1-100 mm s-1 and pressure range of 10-22 kPa. However, the lubrication behaviors varied, while PEG 300 chains and Tween 80 micelles were demonstrated to form a multilayer and a single layer adsorption structure on the sliding surface, respectively. On the whole, the composite lubrication systems, especially the one composed of Tween 80, showed excellent tribological properties owing to the stable slow-release and full hydration effects under ocular conditions, which hold great potential for improving ocular lubrication and maintaining human visual health.
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Affiliation(s)
- Hongdong Wang
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
- Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai 200444, China
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Qi Wang
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
- Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai 200444, China
| | - Yunjuan Su
- School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200444, China
- Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai 200444, China
| | - Junyu Wang
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Xiacong Zhang
- Department of Polymer Materials, School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
| | - Yuhong Liu
- State Key Laboratory of Tribology in Advanced Equipment, Tsinghua University, Beijing 100084, China
| | - Jianhua Zhang
- Key Laboratory of Advanced Display and System Application, Ministry of Education, Shanghai 200444, China
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6
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Qian D, Yang S, Wang X, Tian Y, Wen W. Thermosensitive Scattering Hydrogels Based on Triblock Poly-Ethers: A Novel Approach to Solar Radiation Regulation. Polymers (Basel) 2023; 16:8. [PMID: 38201674 PMCID: PMC10780760 DOI: 10.3390/polym16010008] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2023] [Revised: 12/06/2023] [Accepted: 12/12/2023] [Indexed: 01/12/2024] Open
Abstract
Energy conservation in buildings is paramount, especially considering that glass accounts for 50% of energy consumption. The solar heat gain coefficient (SHGC) of glass is a critical energy-saving index for transparent structures. However, the fixed SHGC of ordinary glass makes it difficult to provide both summer shading and winter heating. In this study, we synthesized a hydrogel with a thermosensitive scattering (TS) property using triblock polyether and acrylamide. This hydrogel can realize the transition of clearness and atomization based on the temperature. When sealed within a glass cavity, it exhibits a high SHGC of 0.682 in its transparent state and a low SHGC of less than 0.31 when atomized. The lower critical solution temperature (LCST) of the TS glass can be adjusted from 0 to 70 °C to suit different regions. The photothermal properties of the material remained stable after 200 hot and cold cycles and 200 h of ultraviolet irradiation. This glass can prevent solar radiation from entering the room in summer, thereby reducing air conditioning usage and power consumption. In winter, it allows solar heat radiation to enter the room, minimizing the need for artificial heating. Its adaptable temperature design makes it an excellent solution for designers to create energy-efficient building exteriors.
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Affiliation(s)
- Dewei Qian
- Division of Emerging Interdisciplinary Areas, Academy of Interdisciplinary Studies, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong;
- Thrust of Advanced Materials, The Hong Kong University of Science and Technology (Guangzhou), Nansha, Guangzhou 511400, China
- Shenzhen-Hong Kong Collaborative Innovation Research Institute, The Hong Kong University of Science and Technology, Futian, Shenzhen 518000, China
| | - Siyu Yang
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong;
| | - Xiaofang Wang
- Chongqing Hewei Technology Co., Ltd., Chongqing 401120, China; (X.W.); (Y.T.)
| | - Yang Tian
- Chongqing Hewei Technology Co., Ltd., Chongqing 401120, China; (X.W.); (Y.T.)
| | - Weijia Wen
- Thrust of Advanced Materials, The Hong Kong University of Science and Technology (Guangzhou), Nansha, Guangzhou 511400, China
- Shenzhen-Hong Kong Collaborative Innovation Research Institute, The Hong Kong University of Science and Technology, Futian, Shenzhen 518000, China
- Department of Physics, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong;
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7
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Wang K, Zhang L, Jiang X. Freezing-resistant poly(N-isopropylacrylamide)-based hydrogel for thermochromic smart window with solar and thermal radiation regulation. J Colloid Interface Sci 2023; 652:663-672. [PMID: 37482487 DOI: 10.1016/j.jcis.2023.07.115] [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: 04/10/2023] [Revised: 07/04/2023] [Accepted: 07/18/2023] [Indexed: 07/25/2023]
Abstract
Adaptive regulation of solar and thermal radiation by windows in diverse (hot and cold) climates is essential to reduce building energy consumption. However, conventional hydrogel-based thermochromic smart windows lack thermal radiation regulation, and have difficulty to combine high solar regulation with excellent freezing resistance. It is challenging to integrate the above performance into one hydrogel-based thermochromic window. Here, we firstly prepared poly(N-isopropylacrylamide-co-N, N-dimethylacrylamide)/ethylene glycol (PNDE) hydrogels with tunable and excellent freezing resistance (below -100 °C) by adding the anti-freezing agent ethylene glycol, and assembled PNDE hydrogels, polyvinylidene fluoride and polymethyl methacrylate-silver nanowires panels into a freezing-resistant smart window with solar and thermal radiation regulation (STR). PNDE hydrogels had an excellent thermochromic performance with luminous transmittance (Tlum) of 89.3 %, solar regulation performance (ΔTsol) of 80.7 % and tunable phase change temperature (τc, 22-44 °C). The assembled STR window showed high Tlum of 68.2 %, high ΔTsol of 62.6 %, suitable τc of ∼30 °C and freezing resistance to low temperature of -27 °C. Moreover, the different thermal emissivity (0.94 and 0.68) of the two sides of the STR window gave it the ability of radiative cooling in hot climates and warm-keeping in cold climates. Compared to the conventional thermochromic windows, the STR window promotes heat dissipation in hot conditions while reduces heat loss in cold conditions and is applicable to diverse climates, which is a promising energy-saving device for reducing building energy consumption.
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Affiliation(s)
- Kai Wang
- School of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
| | - Lei Zhang
- School of Chemical Engineering, Fuzhou University, Fuzhou 350108, China
| | - Xiancai Jiang
- School of Chemical Engineering, Fuzhou University, Fuzhou 350108, China; Qingyuan Innovation Laboratory, Quanzhou 362114, China.
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8
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Xie L, Wang X, Zou X, Bai Z, Liang S, Wei C, Zha S, Zheng M, Zhou Y, Yue O, Liu X. Engineering Self-Adaptive Multi-Response Thermochromic Hydrogel for Energy-Saving Smart Windows and Wearable Temperature-Sensing. SMALL (WEINHEIM AN DER BERGSTRASSE, GERMANY) 2023; 19:e2304321. [PMID: 37658503 DOI: 10.1002/smll.202304321] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Revised: 08/21/2023] [Indexed: 09/03/2023]
Abstract
Buildings account for ≈40% of the total energy consumption. In addition, it is challenging to control the indoor temperature in extreme weather. Therefore, energy-saving smart windows with light regulation have gained increasing attention. However, most emerging base materials for smart windows have disadvantages, including low transparency at low temperatures, ultra-high phase transition temperature, and scarce applications. Herein, a self-adaptive multi-response thermochromic hydrogel (PHC-Gel) with dual temperature and pH response is engineered through "one-pot" integration tactics. The PHC-Gel exhibits excellent mechanical, adhesion, and electrical conductivity properties. Notably, the low critical solubility temperature (LCST) of PHC-Gel can be regulated over a wide temperature range (20-35 °C). The outdoor practical testing reveals that PHC-Gel has excellent light transmittance at low temperatures and radiation cooling performances at high temperatures, indicating that PHC-Gel can be used for developing energy-saving windows. Actually, PHC-Gel-based thermochromic windows show remarkable visible light transparency (Tlum ≈ 95.2%) and solar modulation (△Tsol ≈ 57.2%). Interestingly, PHC-Gel has superior electrical conductivity, suggesting that PHC-Gel can be utilized to fabricate wearable signal-response and temperature sensors. In summary, PHC-Gel has broad application prospects in energy-saving smart windows, smart wearable sensors, temperature monitors, infant temperature detection, and thermal management.
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Affiliation(s)
- Long Xie
- College of Chemistry and Chemical Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - Xuechuan Wang
- College of Chemistry and Chemical Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - Xiaoliang Zou
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - Zhongxue Bai
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - Shuang Liang
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - Chao Wei
- College of Chemistry and Chemical Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - Siyu Zha
- College of Chemistry and Chemical Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - Manhui Zheng
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - Yi Zhou
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - Ouyang Yue
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
| | - Xinhua Liu
- College of Bioresources Chemical and Materials Engineering, Institute of Biomass & Functional Materials, Shaanxi University of Science & Technology, Xi'an, Shaanxi, 710021, China
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9
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Liu J, Zhou J, Meng Y, Zhu L, Xu J, Huang Z, Wang S, Xia Y. Artificial Skin with Patterned Stripes for Color Camouflage and Thermoregulation. ACS APPLIED MATERIALS & INTERFACES 2023; 15:48601-48612. [PMID: 37787638 DOI: 10.1021/acsami.3c08872] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/04/2023]
Abstract
Chameleons are famous for their quick color changing abilities, and it is commonly assumed that they do this for camouflage. However, recent reports revealed that chameleons also change color for body temperature regulation. Inspired by the structure of the panther chameleon's skin, a stripe-patterned poly(N-isopropylacrylamide) (PNIPAM) and polyacrylamide (PAM) hydrogel film with a laminated structure is fabricated in this work; thus, both camouflage and thermoregulation can be achieved through controlling Vis and NIR light effectively. For the PNIPAM stripe, the upper layer is the native PNIPAM hydrogel and the lower layer is the carbon nanotube-composited PNIPAM hydrogel. Thus, the PNIPAM stripe is capable of reaching 28 °C at a low environmental temperature (12 °C) and a low radiation intensity (20 mW cm-2), while preventing the body temperature from rising by changing to white under a strong radiation intensity (100 mW cm-2). For the PAM stripe, the upper layer combines colloidal photonic crystals and displays a tunable structural color by stretching, and the lower layer is mixed with PNIPAM microgels for thermal regulation. Through the fabrication of multifunctional patterns, the film can achieve both dynamic structural color and thermoregulation by precisely controlling solar radiation absorption, scattering, and reflection. More importantly, in the stripe-patterned system, the shrinkage of the PNIPAM stripes can effectively trigger the elongation of the PAM stripe, which endows the structural color changing process to be self-powered completely. The performances show that the stripe-patterned film may have potential applications in intelligent coatings, especially in areas with large temperature differences during the day such as high plains.
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Affiliation(s)
- Jiahui Liu
- Department of Biological and Bioenergy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Jie Zhou
- Department of Biological and Bioenergy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Yaru Meng
- Department of Biological and Bioenergy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Liqian Zhu
- Department of Biological and Bioenergy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Jintao Xu
- Department of Biological and Bioenergy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Zehua Huang
- Department of Biological and Bioenergy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Shengjie Wang
- Department of Biological and Bioenergy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
| | - Yongqing Xia
- Department of Biological and Bioenergy Chemical Engineering, College of Chemical Engineering, China University of Petroleum (East China), Qingdao 266580, China
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10
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Wang Y, Zhao Y, Yan Z, Li T, Wang S, Dong W. Photothermal-Driven Polymer for a Smart Window with Adaptive Solar Modulation. ACS APPLIED MATERIALS & INTERFACES 2023; 15:43038-43047. [PMID: 37655460 DOI: 10.1021/acsami.3c10848] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
Although the thermochromic smart windows with adjustable sunlight transmittance to achieve energy savings are gradually improving, they are still difficult to use, limited by their unreasonable thermal response temperature, slow switching time, and poor durability. Here, we demonstrate a dual-function hybrid thermoresponsive smart window device (CPH) by trapping the phase-change polyHEA-HDA polymer (HEA = hydroxyethyl acrylate, HDA = hexadecyl acrylate) and polydopamine@CsxWO3 (PDA@CWO) core-shell nanoparticles within glasses. The introduced PDA@CWO nanoparticles substantially increase the energy transformation efficiency of solar energy to heat due to their outstanding photothermal conversion. When the temperature increases above the phase-transition temperature of polyHEA-HDA polymer, the copolymer components in the composite material undergo a reversible crystalline-amorphous transition, which enables the transformation of the whole smart window from transparency to opaque in a low ambient temperature. The light transmittance in the solar range can be dynamically modulated between 54.8 and 22.9% with a low ambient temperature while maintaining acceptable visible light transparency and effective UV shielding. A model house testing proves an indoor temperature cooling of 7.1 °C. This study offers a new approach to designing an energy-saving smart window system with multifunctionality.
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Affiliation(s)
- Yang Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Yulong Zhao
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Zhendong Yan
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Ting Li
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Shibo Wang
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
| | - Weifu Dong
- Key Laboratory of Synthetic and Biological Colloids, Ministry of Education, School of Chemical and Material Engineering, Jiangnan University, 1800 Lihu Road, Wuxi 214122, China
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Tao S, Han J, Xu Y, Fang Z, Ni Y, Fang L, Lu C, Xu Z. Mechanically Switchable Multifunctional Device for Regulating Passive Radiative Cooling and Solar Heating. ACS APPLIED MATERIALS & INTERFACES 2023; 15:17123-17133. [PMID: 36971527 DOI: 10.1021/acsami.2c21961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/18/2023]
Abstract
Energy consumption during cooling and heating poses a great threat to the development of society. Thermal regulation, as switchable cooling and heating in a single platform, is therefore urgently demanded. Herein, a switchable multifunctional device integrating heating, cooling, and latent energy storage was proposed for temperature regulation and window energy saving for buildings. A radiative cooling (RC) emitter, a phase-change (PC) membrane, and a solar-heating (SH) film were connected layer by layer to form a sandwich structure. The RC emitter exhibited selective infrared emission (emissivity in the atmospheric window: 0.81, emissivity outside the atmospheric window: 0.39) and a high solar reflectance (0.92). Meanwhile, the SH film had a high solar absorptivity (0.90). More importantly, both the RC emitter and the SH film displayed excellent wear resistance and UV resistance. The PC layer can control the temperature at a steady state under dynamic weather conditions, which could be verified by indoor and outdoor measurements. The thermal regulation performance of the multifunctional device was also verified by outdoor measurements. The temperature difference between the RC and SH models of the multifunctional device could reach up to 25 °C. The as-constructed switchable multifunctional device is a promising candidate for alleviating the cooling and heating energy consumption and realizing energy saving for windows.
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Affiliation(s)
- Shuang Tao
- College of Materials Science and Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Jingtian Han
- College of Materials Science and Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Ying Xu
- College of Materials Science and Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Zhenggang Fang
- College of Materials Science and Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
| | - Yaru Ni
- College of Materials Science and Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 210009, P. R. China
| | - Liang Fang
- College of Materials Science and Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 210009, P. R. China
| | - Chunhua Lu
- College of Materials Science and Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 210009, P. R. China
| | - Zhongzi Xu
- College of Materials Science and Engineering, State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, Nanjing 210009, P. R. China
- Jiangsu Collaborative Innovation Center for Advanced Inorganic Function Composites, Nanjing Tech University, Nanjing 210009, P. R. China
- Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University, Nanjing 210009, P. R. China
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