FIBERS AND POLYMERS
·
2022
·Vol. 23
·期 5
·1309-1317
·
IF 2.347
Liu Wenya,Sun Di,Ma Haodong,Chen Zhenming,Gui Chengmei,Huang Junjun
Silver-printed terylene is presented to fabricate anti-electromagnetic radiation Maternity Dress (AMD) with superior shielding effectiveness, but the use of noble metal as electromagnetic interference shielding materials enhances cost of raw material and restricts its application. In this study, a facile process combined with electroless deposition and hydrophobic treatment to fabricate self-cleaning radiation protection cotton for AMD was established. The active groups on the plant fiber surface could absorb Sn 2+ and Pd 2+ through coordination effect, acting as catalytic center, which can catalyze the reduction of Ni 2+ in the plating solution. Ni particle deposited on the its surface with deposited amount of 32 %. The fabricated material exhibited an shielding effectiveness of 52.5 dB and it meet AMD criteria. Owing to the cooperation of the low surface energy and rough structure of precipitation, the Ni-plated cotton modified with (3-Mercaptopropyl) trimethoxysilane exhibited remarkable hydrophobicity with water contact angle up to 112.8° and excellent self-cleaning property.
研究领域:
材料科学
·
纺织工程
✓ 已验证
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Lu He,Gege Bao,Xi Yu,Xiaofeng Zhang,Xiaobei Jin,Zixuan Yu,Rong Zhang,Daochun Qin
Bamboo is a sustainable structural material with excellent mechanical properties, but its high flammability and hygroscopicity restrict industrial utilization. This study develops a synergistic dual-modification approach using sodium silicate mineralization and hydrophobic treatment to enhance flame retardancy, mechanical strength, dimensional stability, and mold resistance. Compared to untreated bamboo, the modified bamboo exhibited 50.9%, 21.0%, 64.1%, and 16.7% reductions in peak heat release rate, total heat release, peak smoke production rate, and total smoke release, respectively. The Limiting Oxygen Index reached 36.0% with a Fire Performance Index of 1.4. Hydrophobic treatment reduced water absorption by 84.5% and thickness swelling by 52.2% (longitudinal), 52.0% (radial), and 57.6% (tangential), achieving a 147° water contact angle. Mechanical properties improved significantly, with modulus of elasticity and modulus of rupture increasing by 15.3% and 9.2%, respectively. Mold growth was completely inhibited under high humidity conditions. This strategy overcomes key limitations of bamboo in flammability, moisture sensitivity, and mechanical performance while preserving sustainability, thereby demonstrating significant potential for fire-safe construction and engineered biocomposites.
研究领域:
材料科学
·
林产化学工程
·
生物质改性
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2025
·
IF 2.8
Lu Wang,Hong Li,Yue Dai,Erzhu Sun
Dopamine (DA) can self-polymerize to form polydopamine (PDA) under weak alkaline conditions in the presence of oxygen, creating vibrant structures at the gas–liquid interface. However, the issue of the polydopamine film cracking and easily peeling off from the fabric surface remains unresolved. In this article, we report the rapid polymerization of dopamine in a CuSO 4 /H 2 O 2 system, resulting in the preparation of polydopamine-structured colored cotton fabrics through the stepwise addition of 3-aminopropyltriethoxysilane (KH550) and polyethyleneimine (PEI). Structured color cotton fabrics were hydrophobically treated by a simple impregnation technique using the hydrophobic agent cetyltrimethoxysilane (HDTMS). This improvement suggests that the covalent bonding of PEI with PDA, along with its assembly on the fabric surface, enhanced the homogeneity and continuity of the structural color film, resulting in a brighter and more uniform fabric surface color. After HDTMS treatment, the structural color film on PDA/KH550/PEI-Cotton was converted from a hydrophilic to a hydrophobic state, with a static water contact angle averaging approximately 152.375°. The hydrophobic treatment provided the structural color fabrics with good film stability and resistance to washing, while their surface coloration remained largely unaffected. This method provides a new research idea for eco-dyeing of cotton fabrics.
研究领域:
材料科学
·
纺织功能材料
·
表面化学
·
纳米结构色
·
绿色染整技术
✓ 已验证
产品关联
DOI
高影响因子
BIOSENSORS & BIOELECTRONICS
·
2022
·
IF 12.545
Yang Sun,Cheng Yang,Xiaolin Jiang,Pengbo Zhang,Shuo Chen,Fengxia Su,Hui Wang,Weiliang Liu,Xiaofei He,Lei Chen,Baoyuan Man,Zhengping Li
False detection of SARS-CoV-2 is detrimental to epidemic prevention and control. The scalar nature of the detected signal and the imperfect target recognition property of developed methods are the root causes of generating false signals. Here, we reported a collaborative system of CRISPR-Cas13a coupling with the stabilized graphene field-effect transistor, providing high-intensity vector signals for detecting SARS-CoV-2. In this collaborative system, SARS-CoV-2 RNA generates a “big subtraction” signal with a right-shifted feature, whereas any untargets cause the left-shifted characteristic signal. Thus, the false detection of SARS-CoV-2 is eliminated. High sensitivity with 0.15 copies/μL was obtained. In addition, the wide concerned instability of the graphene field-effect transistor for biosensing in solution environment was solved by the hydrophobic treatment to its substrate, which should be a milestone in advancing it's engineering application. This collaborative system characterized by the high-intensity vector signal and amazing stability significantly advances the accurate SARS-CoV-2 detection from the aspect of signal nature.
研究领域:
生物传感
·
纳米技术
·
分子生物学
·
电子学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
OPTICAL MATERIALS
·
2024
·
IF 3.8
Shuangquan Liu,Chen Weifeng,Yulong Qiao,Tao Li,Xu Li,Ting Xiao,Lihua Jiang,Xinyu Tan
Preparation of anti-reflective (AR) films with both high transmittance and self-cleaning function is crucial for the photovoltaic or other optical devices. Herein, the modified SO 2 AR film is fabricated through facile synthesis. For the synthesis of silica sol, the aging process is eliminated completely, thus greatly shortening the preparation time from days or weeks to hours. The obtained film possesses excellent transmittance, as high as 99.4% at 580 nm, increased by 8.5% for comparison with the original bare glass. After hydrophobic treatment, the water contact angle (WCA) of the film can achieve to about 140°, exhibiting the nice self-cleaning function. It is demonstrated that the hydrophobic modified film has outstanding thermal stability, chemical stability, and mechanical stability. This work contributes well to the synthesis of AR films with ultrahigh transmittance and excellent self-cleaning function, exhibiting the great significance in the development of AR films.
研究领域:
材料科学
·
光学
·
纳米技术
·
表面化学
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2021
·
IF 6.953
Feng-Ping Wang,Bo Li,Mei-Yan Sun,Fazli Wahid,Hong-Mei Zhang,Shu-Jun Wang,Yan-Yan Xie,Shi-Ru Jia,Cheng Zhong
Bacterial cellulose (BC) is a promising biopolymer, but its three-dimensional structure needs to be controllable to be used in multiple fields. BC has some advantages over other types of cellulose, not only in terms of purity and properties but also in terms of modification (in situ modification) during the synthesis process. Here, starches from different sources or with amylose/amylopectin content were added to the growth medium to regulate the structural properties of BC in-situ. The obtained BC membranes were further modified by superhydrophobic treatment for oil-water separation. Starches alter the viscosity of the medium, thus affecting bacterial motility and cellulose synthesis, and adhere to the microfibers, limiting their further polymerization and ultimately altering the membrane porosity, pore size, and mechanical properties perpendicular to the BC fibril layer direction. The average pore diameter of the BC/PS membrane increased by 1.94 times compared to the initial BC membrane. The chemically modified BC/PS membrane exhibited super-hydrophobicity (water contact angle 167°), high oil-water separation flux (dichloromethane, 23,205 Lm −2 h −1 MPa −1 ), high separation efficiency (>97%). The study provides a foundation for developing methods to regulate the network structure of BC and broaden its application.
研究领域:
生物技术
·
材料科学
·
环境工程
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Processes
·
2025
·Vol. 13
·期 9
·2757
·
IF 2.8
Xiaozhong Shen,Weibin Yu,Zihao Zhang,Lu Lu,Weiqi Zhang,Huiyuan Liu,Huaneng Su,Lei Xing,Qian Xu
This study employs hydrophobic modification of the current collector to optimize cathode water management and enhance the performance of passive DMFCs. The surface of the cathode current collector was hydrophobized by polytetrafluoroethylene (PTFE) coating and titanium dioxide/polydimethylsiloxane (PDMS) composite coating. The experimental results showed that the surface hydrophobic treatment significantly improved the cell performance at low methanol concentration and marginally improved the cell performance at high methanol concentration. Among them, the DMFC with bilayer TiO2/PDMS hydrophobic-treated cathode current collector with a contact angle of 153.2° showed the best performance, which achieved superhydrophobicity and led to a peak power density that was 27.25% higher compared to the DMFC with an untreated current collector. With the gradient-based hydrophobic treatment for the cathode current collector, the best performance was achieved when double-layer TiO2/PDMS was used on the MEA side and PTFE coating on the air side.
研究领域:
能源工程
·
燃料电池技术
·
表面化学
·
材料科学
✓ 已验证
产品关联
DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2018
·
IF 6.735
Xiaohai Bu,Yi Lu,Shengwang Chen,Dongxian Li,Zewu Zhang,Ping Qian
This article reported novel porous carbon nitride foams (CNFs)/acrylic resin composites for effective removal of oils and organic solvents from water. The composites were fabricated by a facile and low-cost method: carbonization of melamine–formaldehyde foams to form CNFs with hierarchal porosity and large specific surface area, following by hydrophobic treatment and in situ polymerization of acrylic monomers. A variety of characterizations including XPS, FT-IR, Raman spectra, XRD, and SEM had been performed to record the preparation process of the composites. The results demonstrated that the hydrophobic oil-absorbing resins were chemically attached onto the external surface of CNFs pores, which was beneficial for oil capture. The oil capture tests revealed that the composites had adsorption capacities of ∼33.5 g g −1 to toluene and ∼20.6 g g −1 to DMF, when 15 wt% MCNFs were loaded. The excellent oil capture performances were owing to the combination of CNFs with oleophilic polymeric chains, which not only generated strong capillary and penetration interaction for oil absorption, but also provided large volume of space for oil storage. Despite of the high adsorption capacity, the composites also showed fast capture rate, good recyclability, and oil retention property, making them versatile candidates to satisfy the practical removal of oils and organic solvent from water.
研究领域:
材料科学
·
环境工程
·
化学工程
✓ 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）