INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Hui Jie Zhang,Xuan Liu,Qian Wang,Wenlong Zhang,Xulong Zhu,Boon Peng Chang,Xiangyu You,Pedram Fatehi
Hydrogel coating is an effective solution to realize the high lubricity of solid material. However, conventional hydrogel coatings face challenges of weak interfacial adhesion, insufficient mechanical strength, often requiring complex preparation processes. Herein, a robust, easily prepared PDMA/lignin/PVP physical hydrogel coating is developed by soaking a pre-formed PDMA/lignin dry coating in a polyvinylpyrrolidone (PVP) solution. The interaction between PVP and lignin enhanced the diffusion-in and prevented the diffusion-out of PVP from the coating. The long PVP chains penetrate the coating, forming hydrogen bonds with lignin and leaving dangling chains on the surface that enhances the toughness of the coating film and significantly improves lubricity (friction coefficient of around 0.03 against stainless steel). Furthermore, PVP's ability to form strong ionic interactions with metal ions results in a highly improved interfacial interaction of the coating on metal substrates with the high interfacial energy up to 1210 J m −2 . This easy to prepare, high-performance hydrogel coating shows promising application prospects, especially in the biomedical field.
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高影响因子
BIOMACROMOLECULES
·
2026
·
IF 5.9
Chuchu Chen,Zhu Shan,Yihui Gu,Yuchen Ding,Yiqin Yang,Wenjuan Wu,Yongcan Jin,Sehrish Manan,M. Mostafizur Rahman,Bo Jiang
The controlled-release hydrogel with dual-dynamic-bond networks provides superior tunability and stability through collaborative exchange mechanisms, which are often used for drug release. However, the impact of its multiscale structures involving various orientations and cross-linking densities on release kinetics is still poorly understood. Herein, a dual-dynamic-bond cross-linked hydrogel with tunable structures (orientation and cross-linking density) was developed, where the cross-linked network is formed by imine bonds between aminated lignin and oxidized carboxymethyl cellulose, as well as borate ester bonds between 3-aminophenylboronic acid-grafted sodium alginate and epigallocatechin gallate (EGCG). The results showed that the imine/borate ester cross-linked dual-network hydrogel exhibits pronounced pH responsiveness, enabling synergistic release of lignin and EGCG. Compared with the isotropic structures, the anisotropic hydrogel shows significantly faster release for lignin and EGCG along the aligned microchannels, which is attributed to the shortened mass-transfer pathways. In addition, driven by the stronger interfacial interaction of polar groups, the denser network attributed to the increased freeze–thaw cycles further accelerates the co-release of lignin and EGCG. The release process follows a non-Fickian diffusion mechanism and can be well described by the Korsmeyer–Peppas model. This work establishes a direct structure-release kinetics correlation, paving the way for the design of a dual-dynamic-bond hydrogel for precision delivery.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Jiamin Wang,Jierui Ye,Jia Fu,Shuting Shen,Jianquan Zhu,Qiang Wu,Pan Chen,Guoping Li,Ang Lu,Qian Li
Printable aqueous carbon nanotube (CNT) inks are promising for scalable, flexible, and wearable electronics, yet it remains challenging to simultaneously achieve high electrical performance, long-term dispersion stability, and reliable processability in water. A one-pot ternary deep eutectic solvent (TDES) pretreatment enables lignin depolymerization and functionalization with ammonium phytate/sulfate groups, followed by spontaneous self-assembly into P/N/S-containing lignin nanoparticles (PLNPs). The resulting PLNPs exhibit tunable particle sizes (from 24 nm to 100 nm) and high negative surface charge (up to −62.6 mV). PLNPs adsorb uniformly onto CNT surfaces without forming large aggregates. Molecular dynamics (MD) simulations reveal an “anchor-and-disperse” interfacial mechanism, in which PLNPs anchor on CNT surfaces with heteroatom-enabled noncovalent interactions, while surface charge and hydration provide electrosteric and steric stabilization that suppresses reaggregation. The PLNPs/CNT inks show pronounced shear-thinning and rapid thixotropic recovery, making them suitable for screen printing of conductive patterns on paper. The inks exhibit excellent colloidal stability (>100 days) and achieve conductivities up to 34.9 S·cm −1 without additional synthetic additives. Furthermore, cotton textiles can be dip-coated to fabricate wearable piezoresistive sensors capable of monitoring diverse human motions. This work provides a renewable, waterborne CNT ink platform for sustainable printed and wearable textile electronics.
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ACS Nano
·
2026
·
IF 17.3
Xinhao Zhang,Ke Jiang,Dongbin Fan,Fuxiang Chu
Constructing a water-in-oil (W/O) emulsion adhesive offers a promising strategy to mitigate bondline starvation and interfacial discontinuity resulting from excessive isocyanate penetration into wood in laminated systems. However, the reactive isocyanate–water heterogeneous interface leads to premature NCO consumption, uneven network formation, and interfacial defects. Therefore, reconciling adhesive retention with controlled interfacial reactivity remains a key challenge. Here, inspired by the structural logic of cell membranes in compartmentalizing phases and organizing interfaces, we design lignin colloids as multifunctional regulators in emulsions and establish a cooperative strategy that couples bulk rheological regulation with interfacial film engineering. Owing to their amphiphilic surface chemistry and steric effects, lignin colloids increase the apparent viscosity of the continuous isocyanate phase to suppress overpenetration while enriching at the isocyanate–water interface to assemble into an interfacial film. This film spatially limits direct phase contact and temporally buffers interfacial reactions. Consequently, the penetration depth in wood decreased from around 200 to 25 μm, the pot life of the emulsion was extended by 1.5–2-fold compared with the additive-free system, and about 80% of NCO was retained. A clear and continuous bondline structure was formed after curing, with dry shear strength increasing from 1.02 to 1.74 MPa. The strength retention rate after boiling water treatment reached 93%, and the system demonstrated greater environmental durability. Notably, the isocyanate usage can still be reduced by 30% while delivering enhanced bonding performance, highlighting the potential of this strategy for efficient wood adhesive systems with reduced isocyanate input.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Luo Jing,Lu Junda,Ding Yumeng,Cheng Long,Qin Hengfei
Hydrogels have been widely used in tissue engineering,
soft robotics,
and wearable electronics. However, developing hydrogels that simultaneously
possess high strength, high stretchability, and good conductivity
to meet diverse application requirements remains a significant challenge.
In this study, a strategy involving glycerol substitution, liquid
metal (LM) coordination, and sodium lignosulfonate (LS) immersion
was proposed to enhance the polymer network by adjusting the molecular
arrangement and coordination of poly(vinyl alcohol) (PVA), thereby
enabling the preparation of high-performance PVA/LM 5.0 @LS 24 hydrogels. The PVA/LM 5.0 @LS 24 hydrogels
exhibited a tensile strength of up to 10.7 MPa and a high fracture
strain of 833.1%. Additionally, the Young’s modulus and toughness
reached 186.4 MPa and 69.9 MJ/m 3 , respectively. The outstanding
mechanical properties demonstrated clear advantages compared to those
of other tough hydrogels. Moreover, the incorporation of LM combined
with LS immersion endowed the PVA/LM 5.0 @LS 24 hydrogels with excellent electrical conductivity (6.20 S/m). Interestingly,
the hydrogel also demonstrated good biocompatibility and excellent
coagulation properties, making it suitable for human-sensing applications.
The effective method for fabricating highly tough, fatigue-resistant,
and stretchable hydrogels shows promising potential for use in artificial
ligaments and sensing technologies.
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ACS Applied Polymer Materials
·
2026
·
IF 5.2
Wang Kejia,Dai Junhao,Zhu Wanting,Liu Jingru,Gu Zhexuan,Wang Xinran,Tong Xin,Zhao Huifang,Guo Daliang,Yuan Tianzhong,Li Jing
Lignin is abundant and renewable,
and its high-value
utilization
in carbon-based supercapacitor electrodes has attracted considerable
attention. However, pure lignin-based carbon fibers (LCFs) have insufficient
active sites, and direct loading of polyaniline (PANI) easily causes
agglomeration, limiting their electrochemical performance. In this
work, LCFs were prepared from lignin and polyacrylonitrile (PAN) via
electrospinning, preoxidation, and carbonization, and were then combined
with PANI through three different methods to systematically compare
their effects on the composite properties. Results show that in situ
polymerization achieves a uniform PANI coating on LCFs, alleviating
agglomeration. The Is-LCFs-PANI-3 sample exhibits a specific capacitance
of 287.36 F g –1 at 0.5 A g –1 ,
with 86% retention after 3000 cycles. The assembled symmetric supercapacitor
has a device capacitance of 69.02 F g –1 and 78%
retention after 3000 cycles. This work provides a route for the high-value
utilization of lignin and the development of high-performance supercapacitor
electrodes.
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Journal of Environmental Chemical Engineering
·
2023
·
IF 7.7
Ruijin Li,Danlian Huang,Yashi Chen,Guangfu Wang,Zhen Wei,Wei Zhou,Ruihao Xiao
Selective oxidation of vanillyl alcohol (VAL) to vanillin (VN) is a key step towards sustainable valorization of lignin biomass. The combination of Cu metal and TEMPO has been shown to be an effective catalytic system for the oxidation of alcohols to aldehydes. However, most previous studies have stayed in homogeneous catalytic systems, where the catalysts are difficult to recycle. In this study, Carboxylated multi-walled carbon nanotubes (MWCNTs-COOH) were utilized as the substrate, and the carboxyl functional groups could provide partial ligands for MOFs (Cu 3 (BTC) 2 ), thus allowing MOFs to be encapsulated by MWCNTs. And the hydroxyl group of 4-OH-TEMPO could be dehydrated and condensed with the carboxyl group to graft with carbon nanotubes to form a multiphase catalytic system. The addition of carbon nanotubes improved the stability and thermal conductivity of the catalyst, which was beneficial to the catalytic conversion of VAL. Under the conventional oven heating, the conversion of VAL and the selectivity of VN could reach 98.33% and 91.37% at 120 ℃ for 2 h, respectively. And under microwave radiation , the complete conversion of VAL to VN could be achieved at 120 ℃ for 1 h. After five cycles, the efficiency of the catalyst could still reach more than 85%, which proved to be a stable and reusable integrated catalyst for the oxidation of VAL to VN.
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2023
·
IF 9.9
Jiajia Guo,Syed Comail Abbas,Hai Huang,Zifeng Hua,Md Manik Mian,Shilin Cao,Xiaojuan Ma,Yonghao Ni
Developing highly efficient, sustainable carbon cathodes is essential for emerging Zn-ion hybrid supercapacitors (ZICs). Herein, lignin's novel chemical modification (amination) has been developed to produce high quantity pyrrolic-N moieties as active sites. Furthermore, chemically modified amine moieties in lignin are vital as a natural self-activating template to generate hierarchical porosity in the 2D (graphene-like) architecture with exceedingly high surface area (2926.4 m 2 g −1 ). The rationally introduced dominated pyrrolic-N moieties boost the Zn-ion storage capacity and reaction kinetics due to the dual energy storage mechanism and efficient charge transfer between pyrrolic-N and Zn +2 ions. Furthermore, the pyrrolic-N species are energetically favorable for the adsorption of Zn +2 ions by the formation of N -Zn +2 chemical bonds. Besides, the nitrogen oxides reduce the intrinsic resistance and induce a more polarized surface, resulting in high wettability and efficient transfer of electrolytes into the pores of hydrophobic carbon materials . Subsequently, the chemically modified lignin-derived activated carbon material (Chem-ACM) as a cathode in ZICs delivers a high capacity of 161.2 mA h g −1 at 1 A g −1 with the admirable energy density of 106.7 W h kg −1 at 897 W kg −1 and excellent retention capacity (94%) after 10,000 cycles. Mainly, the assembled quasi solid-state ZICs using Chem-ACM retains the remarkable storage capacity (202 mA h g −1 at 0.2 Ag −1 ) even at a high bending angle. Notably, the Chem-ACM has been further employed in symmetric supercapacitors as an electrode, and it displays exceptional specific capacitance of 354 Fg −1 at 0.5 Ag −1 with tremendous energy (43.5 W h kg −1 ) and the power density (0.53 kW kg −1 ). Additionally, the charge storage capability of Chem-ACM is positively dependent on high nitrogen contents, and it is extrapolated that pyrrolic-N moieties are dominant active sites. Hence, the designed amination-assisted biocarbon synthesis provides a new way to prepare high nitrogen-containing biocarbon for ZICs and further understand pyrrolic-N species' impact on Zn-ion storage.
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International Journal of Environmental Research and Public Health
·
2023
·Vol. 20
·期 5
·4383
·
IF 4.614
Zheng Li,Yuwei Feng,Xia Qu,Yantao Yang,Lili Dong,Tingzhou Lei,Suxia Ren
Lignin is an ideal carbon source material, and lignin−based carbon materials have been widely used in electrochemical energy storage, catalysis, and other fields. To investigate the effects of different lignin sources on the performance of electrocatalytic oxygen reduction, different lignin−based nitrogen−doped porous carbon catalysts were prepared using enzymolytic lignin (EL), alkaline lignin (AL) and dealkaline lignin (DL) as carbon sources and melamine as a nitrogen source. The surface functional groups and thermal degradation properties of the three lignin samples were characterized, and the specific surface area, pore distribution, crystal structure, defect degree, N content, and configuration of the prepared carbon−based catalysts were also analyzed. The electrocatalytic results showed that the electrocatalytic oxygen reduction performance of the three lignin−based carbon catalysts was different, and the catalytic performance of N−DLC was poor, while the electrocatalytic performance of N−ELC was similar to that of N−ALC, both of which were excellent. The half−wave potential (E1/2) of N−ELC was 0.82 V, reaching more than 95% of the catalytic performance of commercial Pt/C (E1/2= 0.86 V) and proving that EL can be used as an excellent carbon−based electrocatalyst material, similar to AL.
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Reaction Chemistry & Engineering
·
2023
·Vol. 8
·期 7
·1673-1683
·
IF 3.9
Zhen Wu,Hongli Bai,Yifan Ji,Tao Wang,Zihe Zhao,Yetao Jiang,Xiaoyu Wang,Jiaxing Xu,Aiyong He,Sheng Chen,Lei Hu
Lignin valorisation is hindered by intrinsic difficulties. The breaking of the anti-degradation barrier of lignin for the transformation of lignin has become a hot topic in current research. In the present work, the carbon-nitride-supported molybdenum catalyst (Mo/CN) was synthesised by a two-step method from ammonium molybdate and dicyandiamide and used for the enhancement of lignin depolymerisation to produce high-value phenols. The SEM, TEM, XPS, XRD and FT-IR results of Mo/CN confirmed that the two-step method is advantageous for the high dispersion of MO nanoparticles on the CN carrier. The CN and various CN-supported metal catalysts were examined carefully to evaluate their catalytic activities for kraft lignin conversion, and this indicated that the loading of molybdenum on CN was a favourable method for the catalytic depolymerisation of kraft lignin. A depolymerisation residue yield of 4.33%, tetrahydrofuran-soluble products (TSPs) yield of 61.6%, and a monomer yield of 23.4% could be obtained when kraft lignin depolymerisation was performed on 2% Mo/CN in 50% ethanol at 220 °C for 2 h. High-value phenols such as butylated hydroxytoluene (BHT) and 4-propylguaiacol dominated the depolymerisation products. Moreover, the synthetic catalyst presents good applicability for different industrial lignins. To understand the role Mo/CN played in the degradation of lignin, a β-O-4 type lignin dimer 2-(2-methoxyphenoxy)-1-(4-methoxyphenyl)ethenone was used as a model, and the degradation pathways of the model based on Mo/CN are proposed.
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Journal of Energy Storage
·
2023
·
IF 9.4
Yukang Fan,Fangbao Fu,Dongjie Yang,Weifeng Liu,Zhixian Li,Xueqing Qiu
Carbon-based supercapacitors are prospective candidates for next-generation energy storage systems . However, there remains challenges in the development of high volumetric capacitance carbon electrodes. Herein, nitrogen-enriched lignin-derived porous carbons (NLSCs) were fabricated by co-pyrolysis of sodium lignosulfonate with zinc oxalate and melamine via an efficient nitrogen doping strategy. The in-situ generation of zinc cyanamide (ZnNCN) achieves a high nitrogen conversion rate of 13.5 %, much higher than that of ZnCl 2 activation (1.9 %), and endows the optimized NLSC-800 an extremely high nitrogen doping (14.47 at.%), abundant edged nitrogen species, and a high bulk density (1.26 g cm −3 ), contributing to substantially improved surface property and boosting pseudocapacitance . Consequently, the NLSC-800 supercapacitor electrode delivered a high gravimetric capacitance of 300 F g −1 and superior volumetric capacitance of 378 F cm −3 . More remarkably, the symmetric supercapacitor assembled by NLSC-800 performs an exceptional volumetric energy density of 5.1 Wh L −1 at 173.0 W L −1 . The capacitance retention rate is 97.6 % over 20,000 charge/discharge cycles at 2.0 A g −1 , exhibiting outstanding cycling stability. This strategy suggests a novel route for fabricating nitrogen-doped biomass-derived carbon for supercapacitors with balanced the gravimetric and volumetric capacitance.
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MATERIALS CHEMISTRY AND PHYSICS
·
2023
·
IF 4.6
Zhiqiang Shan,Xiaohua Jia,Yong Qiu,Jin Yang,Haojie Song
Combining wood matrix with thermosetting resin promises to be a new generation of resin-based friction material alternatives. Herein, regenerated lignin-cellulose (RLC) was prepared by waste wood, and precursor matrix slurry (EP@RLC) was obtained by mixing aqueous epoxy resin (EP) with RLC in different proportions. The impregnation and low-temperature curing processes were used to realize the combination of carbon fibers (CFs) and wood-plastic matrix. RLC filled the voids between CFs and adhered to their surfaces to build a CF-RLC reinforced structure, improving the surface roughness of the CFs/wood-plastic resin-based composite (CFs/EP@RLC) and enhancing the tensile strength and wear resistance. It has excellent mechanical strength with the tensile strength of up to 151.9 MPa, tensile modulus of up to 8.52 GPa, and toughness of up to 9.05 MJ/m 3 . In the tribological performance test, CFs/EP@RLC showed a stable friction coefficient (0.06) and low wear rate (0.64 mm), and no damage occurred at the interface of CFs after a long period of cyclic testing. In comparison with current research on resin-based friction materials, the CFs/EP@RLC meet the requirements in terms of mechanical and tribological properties. Besides, the CFs contained in end-of-life products can be easily recovered in hot alkaline solutions.
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