COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
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2025
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IF 5.4
Hong Zhao,Yuqi Yang,Man Zhou,Lihui Xu,Hong Pan,Qun Yang,Zaisheng Cai
Anti-fog glass can solve the safety problems caused by glass fogging in a wide range of applications. However, its durability is still insufficient under actual application conditions such as high humidity, friction and scratches, et al. Therefore, this work copolymerised hydrophilic chain segments N-hydroxyethyl acrylamide (HEAA) containing -OH and water-resistant -NH-CO-, hydrophobic chain segments butyl acrylate (BA) and a “bridging agent” 4-benzoylphenyl acrylate (BPA) into a trimeric anti-fog coating. And, -OH was introduced to the glass surface by a simple plasma treatment. The BPA was covalently linked with hydrophilic and hydrophobic polymers HEAA/BA through a free-radical polymerisation reaction of double-bonded to form a covalent carbon chain. Meanwhile, it covalently combined with the -OH on the glass surface. BPA formed a stable link between the anti-fog coating and the glass substrate. Thus, the coating was resistant to 400 cycles of sand abrasions and can lift up to 1500 g. The -NH-CO- in HEAA and BA significantly increased the water resistance of the coating which can be immersed in water for 120 h. The -OH in HEAA not only given the coating excellent anti-fogging properties, but also enabled it to self-heal quickly within 10 s. The durable anti-fog coatings prepared in this work have great potential for practical applications.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
ACS Applied Polymer Materials
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2023
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IF 5
Tianya Chen,Hangcheng Zhu,Xinyi Chen,Shuang Zheng,Fugen Liang,Fei Yang,Shujuan Yang,Yong Zhang
Selectivity and antifouling of ultrafiltration (UF) membranes are major challenges in the separation and purification of biological proteins. This work reported that full-coverage spongy poly(ether sulfone) (PES) ultrafiltration membranes assisted by the self-cross-linking of N-hydroxyethyl acrylamide (HEAA) were fabricated via a phase inversion method at room temperature. The pore structure of the UF membrane from finger-like to coverage of the spongy structure occurred by increasing the content of HEAA, which is beneficial for size-selective separation of biomolecules. The optimized M4 membrane showed a high surface porosity with a uniform pore size of 30 nm, resulting in more than 99% protein rejection rate for immunoglobulin G (IgG) but less than 20% rejection for bovine serum albumin, confirming that the molecular weight cutoff is 100k Da. Furthermore, the fabricated PES composite ultrafiltration membranes showed excellent antifouling performance and flux recovery efficiency for proteins due to the hydrophilic group of HEAA. This study provides an intelligent strategy for fouling prevention and selective isolation of proteins.
研究领域:
材料科学
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生物工程
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化学工程
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DOI
高影响因子
Journal of Materials Chemistry B
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2019
·Vol. 7
·期 38
·5762-5774
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IF 5.047
Yang Wang,Jiahui Wu,Dong Zhang,Feng Chen,Ping Fan,Mingqiang Zhong,Shengwei Xiao,Yung Chang,Xiong Gong,Jintao Yang,Jie Zheng
The development of smart materials and surfaces with multiple antibacterial actions is of great importance for both fundamental research and practical applications, but this has proved to be extremely challenging. In this work, we proposed to integrate salt-responsive polyDVBAPS (poly(3-(dimethyl(4-vinylbenzyl) ammonio)propyl sulfonate)), antifouling polyHEAA (poly(N-hydroxyethyl acrylamide)), and bactericidal TCS (triclosan) into single surfaces by polymerizing and grafting polyDVBAPS and polyHEAA onto the substrate in a different way to form two types of polyDVBAPS/poly(HEAA-g-TCS) and poly(DVBAPS-b-HEAA-g-TCS) brushes with different hierarchical structures, as confirmed by X-ray photoelectron spectroscopy (XPS), atom force microscopy (AFM), and ellipsometry. Both types of polymer brushes demonstrated their tri-functional antibacterial activity to resist bacterial attachment by polyHEAA, to release ∼90% of dead bacteria from the surface by polyDVBAPS, and to kill ∼90% of bacteria on the surface by TCS. Comparative studies also showed that removal of any component from polyDVBAPS/poly(HEAA-g-TCS) and poly(DVBAPS-b-HEAA-g-TCS) compromised the overall antibacterial performance, further supporting a synergistic effect of the three compatible components. More importantly, the presence of salt-responsive polyDVBAPS allowed both brushes to regenerate with almost unaffected antibacterial capacity for reuse in multiple kill-and-release cycles. The tri-functional antibacterial surfaces present a promising design strategy for further developing next-generation antibacterial materials and coatings for antibacterial applications.
研究领域:
材料科学
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生物材料
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表面化学
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生物医学工程
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DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Nanke Ma,Yuwei Chen,Liya Wang,Ping Tan,Nayu Chen,Yuan Jin,Jian Song,Guangli Li
Conductive hydrogels have garnered significant attention for flexible electronics, yet simultaneously achieving optimal mechanical robustness and electrical performance under harsh conditions remains challenging. Herein, an ion/electron dual-mode conductive Ag/AgCl@Agar/P(AM- co -HEAA) hydrogel was developed for wearable motion detection and electrophysiological signal monitoring. The hydrogel exhibited outstanding mechanical properties, including excellent stretchability (2207 %), high tensile stress (0.32 MPa), and remarkable toughness (3.90 MJ/m 3 ). As a strain sensor, it displayed high sensitivity (GF of 4.17 within 1100–1400 % strain), stable and reproducible resistance signal output across both micro-strains (0.01–0.1 %) and macro-strains (200–1400 %), and excellent working durability and reliability (200 cycles at 200 % strain). Notably, it also demonstrated reliable sensing performance even at −20 °C due to the ion/electron hybrid conductive mechanism. These unique properties enabled the hydrogel successfully applied in real-time human motion detection and human-machine interaction. Moreover, the hydrogel semi-dry electrodes displayed low potential drift (4.64 μV/min) and electrode-scalp impedance (13.2 ± 1.6 kΩ at 10 Hz). Significantly, the hydrogel electrodes achieve clinical-grade ECG and EEG signal acquisition, comparable to commercial wet electrodes. These superior properties, combined with facile fabrication, make this multifunctional hydrogel a promising candidate for next-generation wearable devices in motion monitoring and human–machine interactions.
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DOI
PubMed
高影响因子
EUROPEAN POLYMER JOURNAL
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2023
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IF 6
Meijun Chen,Kun Lei,Pengshan Guo,Xin Liu,Pengchao Zhao,Meng Han,Bianyun Cai,Guangda Li,Jinghua Li,Jingqiang Cui,Xinling Wang
Construction of highly stretchable and sensitive flexible strain sensors is of great significance for wide applications in human–computer interaction, wearable devices, and electronic skins. However, it turned out to be not effortless to integrate the two seemingly contrary features of high stretchability and sensitivity into a system. Herein, we designed a nanocomposite conductive hydrogel (NCCH) composed of zwitterionic poly(HEAA-co-SBMA) polymers and lithium magnesium silicate (XLG) by means of multi-reversible molecular interactions (MRMIs) including borate ester bonds between polyHEAA and borax, hydrogen bonds , and polySBMA-XLG-based electrostatic interaction, endowing the NCCH with enhanced mechanical, self-healing, adhesive, biocompatible, and sensing performances. The MRMI method enabled NCCHs to obtain an excellent stretchability (∼1080 %)/compressibility (∼98.5 %), a tensile strength of ∼ 0.06 MPa, a good self-healing with a fracture strain recovery of 90.5 %, and a strong adhesion on various hard and soft substrates (e.g. a adhesive shear force of 60 kPa to pigskin tissues). Besides, the integration of zwitterionic polySBMA and conductive XLG promoted charge transfer. by optimal ioinic channels. Based on these outstanding strengths, the NCCHs were farther rationally fabricated as multifunctional strain sensors with remarkable sensing stability for fast and accurately detecting strain/pressure-induced deformation, joint motions, and animal heartbeats. Notably, the excellent self-healing property of NCCH sensors can facilitate their long-period usage and complete recyclability for avoiding wastes. The new MRMI-based NCCH sensor without any conductive additives is deemed to provide a new strategy for broadening their multifunctional strain sensor and healthcare monitoring applications.
研究领域:
材料科学
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纳米技术
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传感器
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生物医学工程
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可穿戴设备
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）