Science China-Technological Sciences
·
2023
·Vol. 66
·期 9
·2681-2695
·
IF 4.6
Du JingJing,Nie ZhaoJun,Yu Hui,Xu JianXiong,Xu LiJian,Chen Qiang
Up to now, it is always a delicate and challenging task to clean and protect Xuan paper ink painting. Xuan paper is composed of cellulose with a rough surface and easy to absorb dust, which leads to poor cleaning effect and irreversible damage in traditional cleaning process. Hydrogel is one of the most effective tools to clean the artworks. However, in the practice of cleaning Xuan paper, most hydrogels cannot achieve fine cleaning result due to the interfacial adhesion issues. Herein, to protectively and effectively clean Xuan paper, using physical yet strong poly(vinyl alcohol)/poly( N -(2-hydroxyethyl) acrylamide) (PVA/PHEAA) hydrogel with suitable stiffness as the model, the interfacial adhesion between hydrogel and Xuan paper was systematically investigated, and various technologies were used to evaluate the cleaning effect. A critical interfacial adhesive energy (< 4 J/m 2 ) is found to achieve the protective and effective cleaning purpose. To the best of our knowledge, this is the first report to estimate the adhesion of hydrogel on the cleaning of paper artwork, which will provide a new viewport in the conservation practice.
✓ 已验证
DOI
高影响因子
JOURNAL OF SOLID STATE ELECTROCHEMISTRY
·
2015
·Vol. 19
·期 6
·1827-1831
·
IF 2.446
Hou Junke,Song Jie,Niu Yubin,Cheng Chuanjun,He Hong,Li Yutao,Xu Maowen
P2-type Na 0.67 Ni 0.33 Ti 0.67 O 2 is explored as a titanium-based anode material for sodium ion batteries. The as-prepared Na 0.67 Ni 0.33 Ti 0.67 O 2 delivers a reversible capacity of 129.2 mAh g −1 at 0.05 C with smooth charge–discharge curves. A simple carbon-coating technique was used to improve the electronic conductivity of Na 0.67 Ni 0.33 Ti 0.67 O 2 particles. The carbon-coated Na 0.67 Ni 0.33 Ti 0.67 O 2 delivers a higher reversible capacity of 163.7 mAh g −1 and exhibits better rate capability than the as-prepared Na 0.67 Ni 0.33 Ti 0.67 O 2 .
✓ 已验证
DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
·
2019
·Vol. 26
·期 9
·1-13
·
IF 1.53
Yang Zhihui,Zang Hu,Wu Guangfeng
A solvent-free waterborne polyurethane was synthesized via one-component crosslinking using N-[(2-amionoethyl)-amino] ethane sulphonated sodium as the post-chain extender. The effects of the N-[(2-amionoethyl)-amino] ethane sulphonated sodium and polyol content on the properties of waterborne polyurethane were investigated. The results indicate that at the optimum post-chain extender (6 mol%) and polyol (15.5 mol%) content, the waterborne polyurethane demonstrated best comprehensive properties. A clear advantage of the approach is that, in contrast with the traditional synthesis technique of waterborne polyurethane, the reaction process did not need any organic solvents to reduce the system viscosity. Also, a more natural optical appearance was obtained by the drying process of waterborne polyurethane itself. The as-developed waterborne polyurethane coating can be extensively used on the artificial leather and synthetic leather surfaces.
✓ 已验证
DOI
高影响因子
Journal of Macromolecular Science Part A-Pure and Applied Chemistry
·
2024
·
IF 2.1
Yajun Wang,Yiyan Gao,Kai Shi,Guanghui Gao
Wearable sensors based on ionic hydrogels have attracted increasing attention, but practical application is often hampered by poor environmental tolerance. Here, an environment-stable and tough hydrogel was constructed by introducing glycerin, sodium chloride and xanthan gum into a polyvinyl alcohol hydrogel network. Hydrogen bonds were formed among glycerin, xanthan gum and polyvinyl alcohol chains to enhance the toughness of hydrogel. Furthermore, the salting-out effect of polyvinyl alcohol chains induced by sodium chloride also improved the strength of hydrogel. Besides, the hydrogel was highly sensitive to mechanical deformation of tensile and compressive strain. The obtained hydrogel with sensitivity was capable of serving as a wearable sensor for monitoring human motions including speaking, bending articulation and so on. Notably, the hydrogel still maintained flexibility, toughness and conductivity under subzero or ambient conditions for a long time. This simple method paves an effective way for designing environment-stable and tough hydrogels.
✓ 已验证
DOI
高影响因子
Soft Matter
·
2014
·Vol. 11
·期 9
·1767-1777
·
IF 4.151
Shangyang Li,Lin Zhang,Bo Wang,Mingfang Ma,Pengyao Xing,Xiaoxiao Chu,Yimeng Zhang,Aiyou Hao
Vesicles were formed in aqueous solution using β-cyclodextrin (β-CD) complexes with a series of ultra-small aromatic molecules. The vesicles are easy to prepare without a complicated synthesis procedure and their structure was identified and characterized using various techniques, including transmission electron microscopy, atomic force microscopy and dynamic laser light scattering. Using the β-CD/L-phenylalanine system as a representative example, the structural factors that caused the self-assembly were revealed using proton nuclear magnetic resonance, Fourier transform infrared spectroscopy and X-ray diffraction. In addition, the vesicular architecture could be endowed with a diverse range of stimuli-responses, as a consequence of the selective addition of various guest molecules. It is anticipated that this novel assembly strategy could be further extended, and that it presents new opportunities for the development of nanocarriers and soft materials.
✓ 已验证
DOI
高影响因子
RSC Advances
·
2015
·Vol. 5
·期 100
·82027-82033
·
IF 3.84
Runjun Lin,Ang Li,Tingting Zheng,Lingbin Lu,Yang Cao
Adsorbent materials as well as hydrophobic modification methods have been at the forefront of research creating environmentally hazardous waste. Herein, we report a facile, green preparation method for cellulose aerogels. Cold plasma technology was employed for hydrophobic modification of the aerogel surface using trimethyl-chlorosilane (TMCS) as the plasma. Notably, the modification procedure was considerably more rapid (less than 3 min), more efficient and economically viable than traditional methods. The highly flexible modified cellulose aerogels are hydrophobic (ca. 150°), oleophilic and ultralight (as low as 0.0196 g cm−3). Compared to conventional oil adsorbent materials, these low-cost, environment-friendly cellulose aerogels exhibit excellent adsorption properties (peanut oil, 34.5 g g−1) as well as remarkable reusability (more than 15 times). Therefore, the preset work would play a significant role in further advancing the fields of adsorbent materials and hydrophobic modification methods.
✓ 已验证
DOI
高影响因子
POLYMER
·
2013
·
IF 3.379
Runnan Zhang,Yanlei Su,Jinming Peng,Xiaochen Fan,Zhongyi Jiang,Xueting Zhao,Jiazhen Liu,Yafei Li,Jiaojiao Zhao
In the present study, an in situ approach to pH and temperature responsive membranes is developed. The membrane matrix is formed through bulk polymerization and crosslinking of liquid monomer 2-hydroxyethyl methacrylate (HEMA) while the membrane pores are formed by the templating of inorganic particles . The functional monomers methacrylic acid (MAA) and N-isopropylacrylamide (NIPAAm) are incorporated into membrane casting solution in order to confer membranes with pH and temperature responsive properties. The poly(HEMA/MAA) membranes exhibit a reversible pH-dependent water flux, while the poly(HEMA/NIPAAm) membranes exhibit a reversible temperature-dependent water flux. The flux of the poly(HEMA/MAA) membrane increased by 70% when pH was decreased from 10.0 to 2.0, while the flux poly(HEMA/NIPAAm) membrane increased by 150% when temperature was increased from 20 to 45 °C. The protein adsorption and antifouling performance of the poly(HEMA/MAA) and poly(HEMA/NIPAAm) membranes also exhibit pH and temperature responsive properties.
✓ 已验证
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2022
·Vol. 414
·期 16
·4707-4716
·
IF 4.478
Yang Zengwei,Yuan Yufei,Xu Xiangfei,Guo Hongyu,Yang Fafu
Although numerous fluorescence sensors for Cu 2+ have been presented, a long-wavelength sensor in aqueous media has rarely been reported as expected due to practical application requirements. In this work, a novel AIE molecule ( DHBB ) containing two biphenylacrylonitrile units bridged by dibenzylidenehydrazine was prepared. It possessed the merits of long-wavelength emission, good emission in aqueous media, and multiple functional groups for binding Cu 2+ . It exhibited good sensing selectivity for Cu 2+ among all kinds of tested metal ions. The detection limit was as low as 1.08 × 10 −7 M. The sensing mechanism was clarified as 1:1 stoichiometric ratio based on the binding cooperation of O and N functional groups of DHBB . The selective sensing ability for Cu 2+ remained stable at pH = 5–9 and was influenced little by other metal ions. The Cu 2+ sensing ability of DHBB was applied in real samples with 96% recovery rate. The bio-imaging experiment of living cells suggested that DHBB possessed not only good bio-imaging performance but also sensing ability for Cu 2+ in living environments. This work suggested the good application prospect of DHBB to sense Cu 2+ in real samples and living environment. Graphical abstract
✓ 已验证
DOI
高影响因子
ANALYTICAL AND BIOANALYTICAL CHEMISTRY
·
2013
·Vol. 405
·期 8
·2525-2533
·
IF 3.659
Wang Zhihua,Li Jinshu,Liu Xiaole,Yang Jianming,Lu Xiaoquan
A sensitive amperometric sensor for norfloxacin (NF) was introduced. The receptor layer was prepared by molecularly imprinted photopolymerization of acrylamide and trimethylolpropane trimethacrylate on the surface of a gold electrode. The binding mechanism of the molecularly imprinted polymer was explored by ultraviolet (UV) and infrared (IR) spectroscopy. The chemosensor was characterized by cyclic voltammetry (CV), differential pulse voltammetry (DPV), electrochemical impedance (EI), and scanning electron microscopy (SEM). The electrode prepared by photopolymerization has a better recognition ability to template molecules than that of electropolymerization and NIP. Some parameters affecting sensor response were optimized. Norfloxacin was detected by measurements of an amperometric i – t curve. The linear relationships between current and logarithmic concentration are obtained from 1.0 × 10 −9 to 1.0 × 10 −3 mol L −1 . The detection limit of the sensor was 1.0 × 10 −10 mol L −1 . The proposed method is sensitive, simple, and cheap, and is applied to detect NF in human urine successfully.
Amperometric i-t curves of MIPs electrode
✓ 已验证
DOI
高影响因子
IONICS
·
2018
·Vol. 25
·期 3
·1303-1313
·
IF 2.347
Fan Jiaxin,Xiao Qiangqiang,Fang Yaobing,Li Li,Yuan Wenhui
This work presents a Zn/graphite dual-ion battery using natural graphite as the cathode and metallic zinc as the anode, with ionic liquid-based electrolyte. Upon charge, the Zn 2+ cations deposit on the zinc anode, and the trifluoromethanesulfonate (TfO − ) anions simultaneously intercalate into the graphite cathode; upon discharge, both the ions are released back into the electrolyte. The 0.2 M Zn(TfO) 2 /EMImTfO ionic liquid-based electrolyte exhibits a high electrochemical window of 2.8 V (vs. Zn 2+ /Zn) as well as a high conductivity of 7.3 ms cm −1 . The deposition/stripping of zinc on a copper working electrode is systematically studied, which reveals that Zn 2+ cations are mobile in the ionic liquid electrolyte, and zinc can be deposited and stripped in this electrolyte. The insertion/extraction of TfO − into/from graphite is also investigated, demonstrating a reversible process. At a current of 0.2 mA cm −2 and within the voltage of 0.8–2.8 V, the Zn/graphite dual-ion cells exhibit a high sloping discharge plateau within 1.8–2.4 V (corresponding to a medium voltage of about 2.0 V), a discharge capacity of 33.7 mAh g −1 , and an energy density of 65.1 Wh kg −1 ; cells deliver a cyclability of 93.5% Coulombic efficiency for 100 cycles. The SEM image reveals that the zinc deposits are compact and dense, and uniformly distribute on anodes with an average grain size of about 200 nm, without the formation of dendrites. The use of high-safety electrolyte and low-cost electrode materials may enable this cell configuration to be a promising candidate for future energy storage systems.
✓ 已验证
DOI
高影响因子
ENVIRONMENTAL POLLUTION
·
2025
·
IF 7.3
Ruining Guan,Qiyue Wang,Dongquan Li,Binbin Guo,Weilin Wang,Ningqi Li,Jinlong Zhang,Ruitong Cai,Zeyang Cui,Haixia Zhang,Chunyan Zhao
There are various types and mixtures of nanoplastics (NPs) that are ubiquitous in the environment. Nevertheless, it remains a challenge to investigate the membrane effects and in vivo processes of mixtures of NPs due to their compositional complexity. In the present study, a framework combining cell assays, molecular dynamics (MD) simulations, and toxicogenomic network analysis was implemented to elucidate the differential effects of polystyrene (PS), polyethylene (PE), and the PS-PE mixture on cell membrane integrity. The cellular experiments indicated that PS, PE, and the PS-PE mixture could induce leakage of intracellular substances across the cell membrane, thereby demonstrating membrane damage. Molecular dynamics simulations revealed that these NPs could surmount energy barriers to infiltrate lipid membranes, leading to the formation of membrane pores. Notably, the PS-PE mixture showed a stronger effect than the single component. As evidenced by both cellular experiments and MD simulations, this phenomenon might be resulted from the elevated affinity of the PS-PE mixture for the lipid bilayer. The characteristic enhanced its propensity to engage with membrane structures, thereby inducing more pronounced disruption of membrane integrity. The analysis of biological networks underscored metabolic disorders and oxidative stress as key pathways for hepatotoxicity induced by NPs, elucidating the membrane damage and hepatotoxic mechanisms of NP mixtures. The study established a critical framework for assessing health risks of diverse NPs and their mixtures, while providing novel insights into the multiscale characterization of toxicity mechanisms spanning from molecular interactions to pathway-level information.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Kewei Shu,Wenjuan Li,Yi Zhang,Yan Zong,Huilan Li,Yu Wang,Zixiong Sun
Flexible, miniature, and lightweight supercapacitor is ideal power source for next-generation portable and wearable electronics. However, their widespread application is limited by a critical drawback, self-discharge, which leads to energy loss during idle periods. To this end, a polyvinylidene fluoride (PVDF)-based nanofiber separator with piezoelectric properties that can effectively suppress self-discharge in supercapacitors, was prepared via electrospinning. By incorporating hydrophilic cellulose acetate (CA) and reduced graphene oxide (rGO) into the PVDF matrix, both the electrolyte affinity and piezoelectric output of the separator are significantly enhanced. The resulting rGO/CA/PVDF composite membrane exhibits outstanding mechanical flexibility, high porosity, excellent electrolyte uptake, making it highly suitable separator for flexible supercapacitor. Supercapacitors equipped with such separator exhibit superior electrochemical performance with a specific capacitance of 178.2 F/g at 10 A/g. Notably, an impressive capacitance retention of 79 % was achieved after 24 h of self-discharge test. The reduction in self-discharge is primarily due to the limited diffusion of electrolyte ions, induced by the polarized rGO/CA/PVDF composite separator endowed with improved piezoelectric characteristics. This work highlights the potential of piezoelectric separators as an effective strategy for long-term energy retention, and offers new insights into the rational design of functional separators with self-discharge mitigation capabilities.
✓ 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）