Structures
·
2025
·
IF 4.3
Hu Feng,Kenan Huang,Aofei Guo,Zhihui Sun,Zhenyun Yu,Congguang Yao,Yifang Tian,Ruili Liu
Penetration of chloride ions is one of the main factors that lead to the rusting of steel reinforcement within concrete. This study investigates the effects of cellulose nanocrystal (CNC) on the chloride ion erosion resistance of cement pastes by examining the chloride diffusion behavior, the chloride binding capacity, and the bound chloride desorption behavior under different pH environments. It is found that for cement pastes with a water-to-cement ratio of 0.3, the addition of 0.1 % CNC can reduce the chloride ion penetration depth and the free chloride ion content, with the chloride ion diffusion coefficient reduced by approximately 35 %; for cement pastes with a water-to-cement ratio of 0.5, the impact of CNC on chloride ion penetration depth is not significant, but it decreases the free chloride ion content. When the CNC dosage increases to 0.2 %, the chloride ion diffusion coefficient can be reduced by approximately 40 %. By analyzing the chloride ion diffusion coefficient and the surface chloride ion concentration, a chloride diffusion model for CNC-modified cement pastes is established. Additionally, the use of CNC can increase the chloride binding capacity and inhibit the bound chloride desorption of cement pastes. Specifically, the addition of 0.1 % CNC increases the 28-day physically and chemically bound chloride ion contents by approximately 58.71 % and 29.54 %, respectively. The desorption of bound chloride ions from cement pastes varies under different pH conditions. At pH= 12 and pH= 9, the addition of 0.1 % CNC reduces the 28-day desorption rate from 33.13 % to 21.49 % and from 80.21 % to 43.00 %, respectively.
✓ 已验证
DOI
高影响因子
CELLULOSE
·
2025
·
IF 4.8
Hu Rui,Zheng Anjia,Zhang Cancan,Wang Chuanxi,Zhang Jiaming,Ge Chongxiao,Li Qing,Zhang Bin,Jiang Feng
High-performance sustainable elastomers with tunable fluorescent behavior designed via robust and facile strategies are highly pursued. In this work, cellulose- graft -poly(tetrahydrofurfuryl acrylate- co -2-(methacryloyloxy)ethyl acetoacetate) (Cell- g -P(THFA- co -AAEM)) copolymers with different compositions were prepared through homogeneous reversible addition-fragmentation chain transfer (RAFT) polymerization. In this design, cellulose acts as the backbone, while the hemicellulose derivative tetrahydrofurfuryl acrylate (THFA) and the petroleum-based monomer 2-(methacryloyloxy)ethyl acetoacetate (AAEM) play the role of soft and rigid segments in the grafted side chains. By tuning the THFA/AAEM feed ratio and cellulose content, the mechanical and adhesion properties of these Cell- g -P(THFA- co -AAEM) copolymers were well manipulated. In addition, the β -diketone groups in THFA repeating units can be further used as the ligands to form dynamic networks in the copolymer matrix with terbium (Tb 3+ ) and europium (Eu 3+ ) ions via lanthanide coordination. The resulting coordinated Cell- g -P(THFA- co -AAEM) copolymers exhibit significantly improved tensile strength and tunable fluorescent colors by adjusting the Tb 3+ /Eu 3+ ratio. The combination of bio-based resources and lanthanide coordination can be further performed to achieve strong sustainable elastomers with improved macroscopic mechanical properties and unique fluorescent behavior.
✓ 已验证
产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Yuhui Meng,Xu Han,Junxiu Piao,Lifu Zhang,Dongliang Xu,Tianyi Li,Xiaoran Yang,Linze Jin,Chengming Jiang,Shanyang Wei,Sheng Bi
Water electrovoltaic generation (WEG) technologies have emerged as a promising avenue for sustainable energy harvesting in response to the growing global emphasis on carbon neutrality. However, conventional WEG systems still encounter significant limitations, including high fabrication costs, limited environmental degradability, and susceptibility to ambient fluctuations. This study presents an aerogel wood-based water evaporation-induced generator (AW-WWEG) fabricated through simple chemical treatment of balsa wood (BW) without incorporating any additional materials. The resulting structure exhibits an aerogel-like morphology with an ultrahigh porosity of approximately 96 % and a low density of 0.05 g/cm 3 . Under ambient conditions with 65 % relative humidity, the AW-WWEG achieves a stable open-circuit voltage of 160 mV and demonstrates additional functionality as a sensing platform for detecting water content in kerosene. Specifically, it allows for effectively identifying water contamination in kerosene by tracking corresponding changes in voltage signals. Compared to untreated BW, the AW-WWEG exhibits a threefold enhancement in power generation efficiency while reducing the detection cost. This eco-friendly, self-powered device offers a cost-effective and sustainable approach for real-time monitoring of water contamination in kerosene.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
·
2025
·
IF 6.2
Kai Li,Wan-zhao Huang,Shi-guan Yang,Jia-hao Yu,Qi Niu,Li Zhao,Ying Mo,Yu-han Fan,Qiang Lu
This study developed an innovative method for directional degradation and valorization of waste cellulose acetate (CA) through pretreatment followed with catalytic pyrolysis, enabling the efficient and high-value recovery of CA. A synergistic pretreatment with ethanol and NaOH was employed to modify the molecular structure of CA feedstock. Coupled with phosphoric acid-activated carbon (PAC) catalyzed pyrolysis, the pretreatment-dependent alternation in CA’s physicochemical properties and their effects on pyrolysis to prepare levoglucosenone (LGO) were systematically investigated. The results indicated that the ethanol-NaOH synergistic pretreatment selectively removed the acetyl substituents in CA, exposing more cellulose characteristics, and facilitated the swelling of CA. These modifications enhanced the suitability of CA for selective LGO production. In pyrolysis-gas chromatography/mass spectrometry (Py-GC/MS) experiments, the highest yield of LGO from pretreated CA reached 17.84 wt%, significantly exceeding the 2.67 wt% yield gained from untreated CA. This study laid a solid foundation for the efficient and high-value recycling of waste CA.
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Fan Zhang,Xin Li,Zhi-yuan Lan,Nan Zhang,Jing-hui Yang,Yong Wang
Common sandwich-structured dielectric films are typically confined to comparatively low operating temperatures because of the significant conduction loss of polymer under high thermal stress that originated from the relatively weak interfacial interaction between adjacent layers. Here, all-organic sandwich-structured dielectric films were fabricated based on cellulose acetate (CA) and poly(methyl methacrylate) (PMMA) by solution casting method. Specifically, CA with high dielectric constant was designed as the intermediate polarizing layer, while PMMA with good insulation property was taken for the breakdown-resistant out layers. The good interlayer interaction endows the sandwich-structured films with a dense structure, while the difference in interlayer conductivity effectively suppresses electric field distortion. Consequently, the maximal discharge energy density ( U d ) of M-CA4-M composite film reaches 6.64 J/cm 3 (i.e., 223 % of pure CA) at 752.66 MV/m, along with an excellent charge-discharge efficiency ( η ) of 83.45 %. Importantly, the composite film also displays prominent capacitive performance still at 150 °C, with U d of 4.72 J/cm 3 and η of 76.65 % at 644.92 MV/m, which are much better than the commercially available dielectric films. This work illustrates the possible application of CA-based dielectric films in high-temperature energy storage field.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2025
·
IF 8.5
Meiling Chen,Sijia Chen,Yi Sun,Yuyan Zheng,Wenhua Miao,Yadong Zhao,Bin Zheng,Shaimaa Hatab,Jin Zhu,Fei Liu
The aim of this work was to develop a novel fluorescent micelle using an amphiphilic cellulose-based functional material ( i.e. C- g -PLLA/AFC) to enable the visualization of drug loading and releasing, while enhancing the aqueous solubility and anti-tumor activity of paclitaxel (PTX). PTX was encapsulated in self-assembled C- g -PLLA/AFC micelles with optimal encapsulation efficiency and drug loading values of 90.40 % and 22.60 %, respectively. The fluorescence spectra showed an increase in fluorescence intensity with the increase of drug loading, confirming the successful loading of the PTX and enabling the visualization of PTX encapsulation. Meanwhile, The PTX-loaded micelles exhibited sustained release under simulated normal blood (pH 7.4) and tumor tissue microenvironment (pH 6.2) conditions, with cumulative drug release rates of 70.85 % and 90.20 % after 144 h, respectively. Fluorescence intensity increases during PTX release, which providing direct visualization of the process. Both drug loading and releasing are linked to changes in the aggregation state of fluorophores, enabling the visualization of these events. Anti-tumor cell experiments conducted with PTX-loaded micellar solutions demonstrated significant cytotoxicity against MCF-7 breast cancer cells. These findings highlight the potential of C- g- PLLA/AFC micelles as efficient carriers for hydrophobic drugs, offering visible monitoring capability for drug loading and releasing.
✓ 已验证
产品关联
DOI
PubMed
高影响因子
Advanced Materials Interfaces
·
2026
·
IF 4.4
Wei Huang,Wuming Fan,Xinyan Fan,Yonggui Wang,Wenkai Zhao,Liang Li,Zefang Xiao,Yanjun Xie
Efficient fog harvesting strategies have attracted increasing attention for addressing global water scarcity. In this study, a bio-inspired slippery surface was engineered by combining hydrophilic–hydrophobic patterning and lubricant infusion based on hydrophobic undecylenic-modified microcrystalline cellulose (UMCC) nanoparticles. The UMCC nanoparticles were synthesized using a dialysis–spraying process, followed by UV-assisted patterning of the hydrophilic domains and infusion with a perfluoropolyether lubricant to create a stable, directionally modified slippery interface. The pristine nanoparticle surface exhibited strong adhesion and high contact-angle hysteresis, which severely hindered droplet removal. However, after lubricant infusion, the contact angle hysteresis was dramatically reduced, enabling rapid droplet mobility, similar to that of Nepenthes pitcher plants. The resulting surface exhibited excellent chemical and environmental stabilities over a wide pH range. Notably, the moderately hydrophilic amino-patterned surface enhanced droplet nucleation, coalescence, and directional removal, achieving an exceptional fog-harvesting rate of 532.8 ± 85.1 mg/(h·cm 2 ), surpassing the performance of all unmodified controls. This study established a simple and sustainable platform for next-generation bio-inspired fog-harvesting and water-management technologies.
✓ 已验证
产品关联
DOI
高影响因子
CARBOHYDRATE POLYMERS
·
2018
·
IF 5.158
Quan-Yong Cheng,Cheng-Shu Guan,Meng Wang,Yi-Dong Li,Jian-Bing Zeng
Cellulose nanocrystal (CNC) with renewability, biodegradability, and nanoscale size was used as the rough structure component instead of inorganic nanoparticles to fabricate renewable and degradable superhydrophobic cotton fabric via a dip-coating method with cured epoxidized oil resin (CESO) as the binder. The superhydrophobic cotton fabric could selectively absorb oil from oily water and could separate various oil/water mixture very efficiently with separation efficiency higher than 98%. The superhydrophobic cotton fabric showed excellent stability, making it reusable for several times without lowering separation efficiency. Moreover, the superhydrophobic cotton fabric exhibited excellent solvent and chemical resistances. Furthermore, the superhydrophobic cellulosic fabric was degradable with weight loss of 14.4 wt% after hydrolytic degradation in phosphate buffer solution (pH 7.4) at 37 °C for 10 weeks. The superhydrophobic cotton fabric may exhibit great viability as sustainable and degradable alternative to traditional nonrenewable and non-degradable superhydrophobic materials in oil/water separation.
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2018
·
IF 3.909
Yuanfeng Pan,Jingchun Wang,Pingxiong Cai,Huining Xiao
In this work, the stepwise synthesis of interpenetrating polymer network (IPN) strategy was developed in an attempt to fabricate novel hydrogels consisting of sugarcane bagasse cellulose (SBC), carboxymethylcellulose (CMC) and poly (N-isopropylacrylamide) (PNIPAm) as a dual-responsive drug carrier. The pretreated and dissolved SBC was pre-crosslinked using epichlorohydrin in the presence of CMC, followed by in-situ free-radical polymerization of NIPAm in the presence of N,N′-Methylene-bis(acrylamide) as a crosslinking agent. The carboxyl groups in CMC and PNIPAm chains rendered the resulting hydrogel pH and thermal responsive. The results from scanning electron microscopy, infrared spectroscopy , thermogravimetric analysis and mechanical property testing demonstrated the successful formation of the IPN with proper structure and mechanical strength . The swelling experiments at different temperatures and pH showed the dual–sensibility of the hydrogels. Moreover, bovine serum albumin (BSA) was used as a model drug and loaded in the hydrogel; and the drug release behavior was revealed in phosphate buffer solution (PBS) and simulated gastric fluid (SGF). The results indicated that the dual-responsive IPN hydrogel is of great potential for the controlled release of drug.
研究领域:
高分子材料
·
药物递送
·
生物医学工程
·
智能响应材料
·
药剂学
✓ 已验证
DOI
高影响因子
Green Energy & Environment
·
2017
·Vol. 3
·期 2
·138-146
·
IF 0
Meng Li,Yulong Wang,Xiaobang Hou,Xia Wan,Hui-Ning Xiao
Novel cellulose based flocculants C-g-P (DMC) with various chain architectures are synthesized through a situ graft copolymerization. The cationic ammonium chloride group (DMC) is grafted onto cellulose by two separate inverse emulsion polymerization with γ-methacryloxypropyl trimethoxy silane (KH-570) and double bond addition reactions, which is a new and simple method to employ KH-570 as a bridge for the connection of cellulose matrix and DMC group. The effects of pH, flocculant dose, standing time on turbidity of kaolin suspensions and particle sizes have been studied systematically. In addition, the response surface methodology (RSM) study confirms that PAC and C-g-P (DMC) have synergy in turbidity removal with a higher removal efficiency of 98.32%. Moreover, C-g-P (DMC) 1 has higher removal efficiency with 96.5% at a low dosage of 0.6 mg L −1 and better floc properties than C-g-P (DMC) 2 and C-g-P (DMC) 3 , suggesting that the length and quantity of cationic branch chains play a crucial role in Kaolin flocculation due to their dramatically enhanced bridging effects.
研究领域:
环境科学
·
高分子化学
·
水处理
·
材料科学
✓ 已验证
DOI
ACS Applied Materials & Interfaces
·
2021
·
IF 9.229
Fusheng Zhang,Wenna Ge,Cunli Wang,Xintong Zheng,Dongdong Wang,Xiancheng Zhang,Xue Wang,Xingya Xue,Guangyan Qing
Cellulose nanocrystals (CNCs) are powerful photonic building blocks for the fabrication of biosourced colored films. A combination of the advantages of self-assembled CNCs and multiple templating agents offers access to the development of novel physicochemical sensors, structural coatings, and optic devices. However, due to the inherent brittleness and water instability of CNC-derived materials, their further applications are widely questionable and restrictive. Here, a soft polymer of poly(vinyl alcohol) (PVA) was introduced into the rigid CNC system to balance molecular interactions, whereafter two hard/soft nanocomposites were fastened through a cross-linking reaction of glutaraldehyde (GA), resulting in a highly flexible, water-stable, and chiral nematic CNC composite film through an evaporation-induced self-assembly technique. For a 1.5 wt % GA-cross-linked 70 wt % CNC loading film, its treatment with harsh hydrophilic exposure (soaking in a strong acid, strong base, and seawater) and various organic solvents show exceptional solvent-resistant abilities. Furthermore, the film can even withstand a weight of 167 g cm–2 without failure, which is a highly stiff and durable character. Importantly, the film remains a highly ordered chiral nematic organization, being able to act as a highly transparent substrate for selective reflection of left-handed circularly polarized light, preparing fully covered and patterned full-color coatings on various substrates. Our work paves the way for applications in low-cost, durable, and photonic cellulosic coatings.
研究领域:
材料科学
·
纳米技术
·
光子学
·
高分子科学
·
可持续材料
✓ 已验证
DOI
高影响因子
FOOD CHEMISTRY
·
2015
·
IF 3.391
Yuehan Wu,Xiaogang Luo,Wei Li,Rong Song,Jing Li,Yan Li,Bin Li,Shilin Liu
In order to obtain a safe and biodegradable material with antimicrobial properties from cellulose for food packaging, we presented a facile way to graft chitosan onto the oxidized cellulose films. The obtained films had a high transparent property of above 80% transmittance, excellent barrier properties against oxygen and antimicrobial properties against Escherichia coli and Staphylococcus aureus. The antimicrobial properties, mechanical properties, and water vapor permeability of composites are essential characteristics in determining their applicability as food-packaging materials. Moreover, using a sausage model, it was shown that the composites exhibited better performance than traditional polyethylene packaging material and demonstrated good potential as food packaging materials. The results presented a new insight into the development of green materials for food packaging.
研究领域:
材料科学
·
食品包装
·
聚合物复合材料
·
绿色材料
·
抗菌技术
✓ 已验证
DOI
高影响因子
危险品化学品经营许可证（带存储）