Boosted Gasoline Transport Performance of Poly(vinyl alcohol) Tubes by Constructing Wear-Resistant and Hydrophobic Coatings on the Surface DOI

Zhaohui Chen,

Lian Pu,

Li Li

et al.

Industrial & Engineering Chemistry Research, Journal Year: 2024, Volume and Issue: 63(35), P. 15534 - 15545

Published: Aug. 23, 2024

Poly(vinyl alcohol) (PVA) is an environmentally friendly polymer that can be prepared from nonpetroleum routes, offering a promising alternative to save finite fossil resources and protect our environment. However, the multihydroxyl groups in PVA endow it with sensitivity environmental humidity, deteriorating its mechanical gasoline barrier properties aqueous environments, limiting long-term application transportation. In order improve water resistance achieve use of tubes by melt extrusion, herein, hydrophobic polydimethylsiloxane (PDMS) was adopted grafted onto surface assistance ethyl orthosilicate (TEOS), organic silicon coating approximate thickness 5 μm established. Ascribing this rough coating, tube greatly improved, which reflected contact angle increasing 30.6° 110.2°. Simultaneously, property high ambient humidity (95%) were, respectively, increased 6.4 MPa 1.8 times, compared original one. This PDMS also exhibited good friction tear adhesive tape, largely promoting potential applications field

Language: Английский

Ultralight Flexible Collagen Fiber Based Aerogels Derived from Leather Solid Waste for High Electromagnetic Interference Shielding DOI
Bin Lyu,

Zhuo Guo,

Dangge Gao

et al.

Langmuir, Journal Year: 2024, Volume and Issue: 40(17), P. 9215 - 9223

Published: April 18, 2024

Designing and developing high-performance shielding materials against electromagnetic interference is of utmost importance due to the rapid advancement wireless telecommunication technologies. Such hold both fundamental technological significance. A three-stage process presented for creating ultralight, flexible aerogels from biomass shield interference. Collagen fibers sourced leather solid waste are used for: (i) freeze-drying preparation collagen fibers/poly(vinyl alcohol) (PVA) aerogels, (ii) adsorption silver nanowires (AgNWs) onto fiber/PVA (iii) Hydrophobic modification fiber/PVA/AgNWs with 1H, 2H, 2H-perfluorodecyltriethoxysilane (POTS). Scanning electron microscopy studies reveal that an interweaving AgNWs porous network has formed a conductive network, exhibiting electrical conductivity 103 S·m–1. The effectiveness reached more than 62 dB, while density was merely 5.8 mg/cm3. fiber/PVA/AgNWs/POTS aerogel displayed even better efficiency 73 dB water contact angle 147°. study results emphasize distinctive capacity generate cost-effective, ecofriendly, highly efficient materials.

Language: Английский

Citations

5
Mechanically Controlled Radical Polymerization: From Harsh to Mild DOI
Haoyang Feng,

Xiaoyang Shao,

Zhenhua Wang

et al.

ChemPlusChem, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 30, 2024

Abstract Mechanochemistry constitutes a burgeoning field that investigates the chemical and physicochemical alterations of substances under mechanical force. It enables synthesis materials which is challenging to obtain via thermal, optical or electrical activation methods. In addition, it diminishes reliance on organic solvents provides novel route for green chemistry. Today, as distinct branch alongside electrochemistry, photochemistry, thermochemistry, mechanochemistry has emerged frontier research domain within chemistry material science. recent years, intersection with controlled radical polymerization witnessed rapid advancements, providing new routes polymer Significantly, we have experienced breakthroughs in methods relying sonochemistry, piezoelectricity contact electrification. These methodologies not only facilitate polymers high molecular weight but also enable precise control over chain length structure. Transitioning from harsh mild conditions mechanochemical facilitated significant improvement controllability polymerization. From this perspective, introduce progress aim clarify historcial development topic.

Language: Английский

Citations

4
Innovative applications of bio-inspired technology in bio-based food packaging DOI
Jiaqi Zhong,

David Julian McClements,

Kuang He

et al.

Critical Reviews in Food Science and Nutrition, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 14

Published: Jan. 15, 2025

Traditionally, food packaging was used to extend the shelf life of or monitor its condition. Inspired by many biological structures found in nature, bio-inspired functional materials for bio-based have been shown significantly improved capabilities over traditional various aspects and attract consumers through novel freshness preservation features. This review synthesizes recent advances that mimic structure natural organisms with specific functionalities, examples biomimetics different enhancement areas. In general, certain disadvantages compared polymer materials, so there is an urgent need improvement Biomimicry further inspires realization enhancing some basic functions (hydrophobicity, mechanical strength, antimicrobial properties, optical properties) endowing more new responsiveness other functions. What interesting inspiration bionics taken from such a perspective can also promote progress innovation materials.

Language: Английский

Citations

0
Overcoming Response-Recovery Kinetic Mismatch in Soft Actuators Via Synergistic Material Design for Multimodal Moisture-Responsive Actuation DOI
Sen Lin, Jialu Liu, Nan Zhang

et al.

Published: Jan. 1, 2025

Language: Английский

Citations

0
Overcoming Response-Recovery Kinetic Mismatch in Soft Actuators via Synergistic Material Design for Multimodal Moisture-Responsive Actuation DOI
Sen Lin, Jialu Liu, Nan Zhang

et al.

Nano Energy, Journal Year: 2025, Volume and Issue: unknown, P. 110998 - 110998

Published: April 1, 2025

Language: Английский

Citations

0
Reinforced Nacre‐Like MXene/Sodium Alginate Composite Films for Bioinspired Actuators Driven by Moisture and Sunlight DOI Creative Commons
Linchao Sun, Lixuan Che, Ming Li

et al.

Small, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 6, 2024

Abstract MXene‐based soft actuators have attracted increasing attention and shown competitive performance in various intelligent devices such as supercapacitors, bionic robots artificial muscles. However, the development of robust with multi‐stimuli responsiveness remains challenging. In this study, a nacre‐like structure actuator based on MXene sodium alginate (SA) composite films is prepared using straightforward solvent casting self‐assembly method, which not only enhances mechanical (tensile strength 72 MPa) but also diversifies stimuli material. The can be powered by external from renewable energy sources, moisture inducing maximum bending angle 190 degrees at relative humidity (RH) 91%, sunlight irradiation generating curvature 1.45 cm −1 under 100 mW −2 . feasibility practical applications, including moisture‐responsive flowers walkers, sunlight‐responsive oscillators, smart switches, demonstrated through comprehensive experimental characterization evaluation. work presented here provides insight into design via utilization conversion environmentally sources.

Language: Английский

Citations

2
Enhancing the healability and degradability of epoxy via synergetic steric and electron-withdrawing effects for green electrical packaging DOI
Lei Zhang, Wenjie Sun, Zhongqi Guo

et al.

Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(25), P. 14991 - 15005

Published: Jan. 1, 2024

Synergetic steric and electron-withdrawing effects enable the fabrication of healable degradable green electrical packaging with robust thermal, mechanical insulating performance.

Language: Английский

Citations

1
Fabrication of high performance poly(vinyl alcohol)/straw composite film used for package via melt casting and biaxial stretching DOI
Enhui Liu, Huili Zhang, Li Li

et al.

International Journal of Biological Macromolecules, Journal Year: 2024, Volume and Issue: 278, P. 134675 - 134675

Published: Aug. 10, 2024

Language: Английский

Citations

1
Self-Repairable Carbon Fiber-Reinforced Epoxy Vitrimer Actuator with Multistimulus Responses and Programmable Morphing DOI
Lin Jiang, Ming‐Xia Li,

Jie Sheng

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(43), P. 59188 - 59201

Published: Oct. 16, 2024

Smart shape-changing structures in aerospace applications are vulnerable to damage harsh environments. Balancing high mechanical performance with self-repair capabilities poses a challenge due inherent trade-offs between strength and flexibility. To address this challenge, an asymmetric bilayer-structured actuator was fabricated using commercially available continuous carbon fiber tows (CFs) as the passive layer dynamic cross-linked epoxy vitrimer active layer. The construction of vitrimer-CF involves simple scalable hot-pressing process, resulting tensile 234 MPa interfacial bonding 405 N·m–1. This exhibits remarkable deformation capability (210°/7 s) efficient ability under various stimuli, including thermal (60–160 °C), light (0.4–1.0 W·cm–2), electric (2–4 V), solvent (acetone). By adjustment orientation angle CFs, complex left-handed right-handed curling can be achieved. Leveraging insights from photothermal/electrothermal actuation mechanisms, quadruped crawling robot is developed capable 4 cm single illumination. lift objects 45 times its weight when subjected stimuli. Additionally, flap constructed achieve change 63° within 10 s stimulus, enabling remote control over aircraft flight angle. These results demonstrate potential for advanced intelligent structures.

Language: Английский

Citations

1
Blue Light Controlled Supramolecular Soft Robotics of Phenylazothiazole Amphiphiles for Rapid Macroscopic Actuations DOI Creative Commons
Ming‐Hin Chau, Wai‐Ki Wong, Takashi Kajitani

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 16, 2024

Abstract Nature preprograms sophisticated processes in operating molecular machines at the nanoscale, amplifying motion across multiple length‐scales, and controlling movements living organisms. Supramolecular soft robotics serve as a new alternative to hard robotics, are able transform amplify collective motions of supramolecularly assembled attaining macroscopic motions, upon photoirradiation. By taking advantage oriented supramolecular scaffold, here first rapid robotic materials driven by visible light presented. Head‐tail amphiphilic structure is designed with phenylazothiazole motif photoswitching core. Unidirectionally aligned nanostructures phenylazothiazoles controlled non‐invasive blue irradiation bends toward source, demonstrating fast actuation systems (up 17° s −1 ) aqueous media. Through meticulous X‐ray diffraction electron microscopy analyzes, mechanism illustrated tight relation geometric transformations photoisomerization. elucidating key parameters, this paves way for next generation design enhanced biomimetic actuating functions.

Language: Английский

Citations

1