COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Wenjing Zeng,Jinlong Shen,Juan Jia,Mingli Wu,Zebao Rui
A perception purification material is designed for formaldehyde removal. • Bacterial cellulose aerogel modified with carbon quantum dots was applied in formaldehyde abatement. • Adsorption state of aerogels was perceived by fluorescence quenching and color variation. Formaldehyde (FA), a highly toxic, colorless and odorless at low concentrations indoor pollutant, poses a substantial threat to human health. There is an increasing demand for intelligent materials capable of simultaneously removing FA and enabling real-time visualization of their service status, a technology known as perceptual removal. Herein, carbon quantum dots (CQD) are rationally incorporated into bacterial cellulose aerogel (BC) matrix via a simple one-step method for the perceptual removal of indoor FA. The interactions between CQD and BC improve the FA adsorption capacity, from 0.05 mg/g of BC aerogel to 0.08 mg/g of the composite aerogel, and induce distinct fluorescence quenching upon exposure to FA. Benefiting from its unique optical response, the service status of CQD/BC aerogel could be evaluated based on its fluorescence state. The construction of this perceptual removal platform not only provides a promising approach for simultaneous perception and removal of gaseous FA, but also offers a successful example for multifunction integration to eliminate other indoor pollutants. Download: Download high-res image (137KB) Download: Download full-size image
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高影响因子
POLYMER
·
2026
·
IF 5.1
Mengxiang Xue,Yaming Zhao,Xing Li,Zhengyong Liang
Poly (propylene carbonate) (PPC), a biodegradable polyester with biomedical potential, is limited by poor heat resistance and mechanical strength. This study blended rigid poly (cyclohexene carbonate) (PCHC) into PPC to enhance properties, but their poor compatibility caused phase separation, restricting performance improvement. Microcrystalline cellulose (MCC), rich in hydroxy groups, exhibits significant hydrogen bonding interactions with two types of polyester matrices, enabling its use as a compatibilization promoter for polyester materials. However, due to its high polarity and strong crystallinity, MCC tends to disperse poorly within the matrices. Consequently, moderate hydrophobic modification of MCC is required to enhance its compatibility with the matrices. In this work, two methods, namely physical adsorption modification with cetyltrimethylammonium bromide (CTAB) and acetylation chemical modification, were employed to hydrophobically modify MCC. The study investigated the effects of incorporating hydrophobically modified MCC, prepared by these different methods, on the surface structure, thermal properties, and mechanical performance of PPC/PCHC blends, as well as its impact on the compatibility of the PPC/PCHC blend system.
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Gels
·
2026
·Vol. 12
·期 6
·529
·
IF 6.4
Shixue He,Weilong Fei,Ming Shi,Zaijiong Chang,Daning Lang,Ronglan Wu
In recent years, oil spill accidents and oily wastewater discharge have posed severe threats to aquatic ecosystems and human health. Developing green, low-cost, efficient, and recyclable oil–water separation materials is therefore important for environmental remediation. In this work, kaolin/cellulose composite aerogels were fabricated through a low-temperature NaOH/urea dissolution system using N,N′-Methylenebisacrylamide (MBA) as the cross-linking agent, followed by freeze-drying and hydrophobic modification with Methyltrimethoxysilane (MTMS). The structure, morphology, thermal stability, wettability, mechanical behavior, oil adsorption capacity, and reusability of the aerogels were systematically investigated. The composite aerogels exhibited a honeycomb-like interconnected porous structure with low density and high porosity. Kaolin acted as an inorganic reinforcing and roughness-regulating component, which promoted the formation and anchoring of an MTMS-derived siloxane/SiO2-like hydrophobic layer on the aerogel surface. The modified aerogels showed superhydrophobicity with a water contact angle above 152° and excellent oleophilicity. The optimized SC3K0.5 aerogel delivered adsorption capacities of 13.5 g/g for pump oil and 12.5 g/g for diesel. After 10 adsorption–desorption cycles, the adsorption capacity remained above 90% of the initial value, indicating good recyclability and mechanical stability. This recyclable kaolin/cellulose aerogel provides a feasible strategy for practical oil–water separation and oily wastewater treatment.
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PubMed
高影响因子
GREEN CHEMISTRY
·
2026
·Vol. 28
·期 22
·9357-9368
·
IF 10.6
Yumei Chen,Chunhui Xie,Tao Wu,Tianlong He,Haibo Xie,Yuanlong Guo
The increasing environmental burden of petrochemical-based plastics has driven the urgent development of sustainable alternatives. Cellulose is a promising platform for biobased vitrimers, yet strong intermolecular hydrogen bonding severely limits its processability. Consequently, the homogeneous fabrication of cellulose-based polyimines without disrupting the intrinsic cellulose framework remains a key challenge. Herein, a ketone-functionalized, water-soluble cellulose levulinate ester (CLE) was prepared in a novel CO2-based solvent system, followed by the fabrication of cellulose-based polyimine plastics (CPPs) via catalyst-free Schiff base reactions of CLE with a series of diamines in aqueous solution. The dynamic imine linkages formed in CPPs partially replaced hydroxy groups along the cellulose backbone, generating vitrimer-like polyimine networks. As a result, thermally triggered reversible imine exchange in the CPPs enabled reprocessability and self-healing behavior. Moreover, the materials demonstrated outstanding tensile strength (84.5 MPa) and Young's modulus (3.7 GPa), excellent moisture and solvent resistance, and both chemical degradability and biodegradability. Green metrics calculations provided quantitative support for the environmental profile of the present system. This water-mediated, catalyst-free fabrication strategy provides a molecular design approach for reconfiguring intermolecular interactions in cellulose, thereby establishing CPPs as a reprocessable platform for high-performance dynamic cellulose plastics.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Zhanjun Cheng,Xiaoxiao Yin,Guanzheng Zhou,Bin Hu,Jiaxin Huang,Jinglan Wang,Beibei Yan,Qiang Lu,Guanyi Chen
CP pretreatment reduced cellulose crystallinity and pyrolysis E a. • O 2 -CP introduced oxygen-containing groups and H 2 -CP modulated C-C/C-O bonds. • Multiple characterization reveals plasma-induced pathway reconstruction. • Plasma atmospheres uniquely reconstruct pyrolysis pathways. Anhydrosugars, mainly derived from cellulose fast pyrolysis, serve as versatile platform molecules for the sustainable synthesis of advanced biofuels and high-performance polymeric materials. Efficient pretreatment can enhance the potential for anhydrosugars generation by fast pyrolysis. The present study proposed a cold plasma (CP) pretreatment method to treat cellulose and enhance anhydrosugars production and revealed its effect in different plasma atmospheres (oxidizing O 2 , reducing H 2 , and inert He) on cellulose structural. Multi-dimensional characterization indicated that O 2 and H 2 plasma pretreatment significantly reduced the crystallinity (from 73.41% to 48.96%) of cellulose and promoted particle fragmentation through surface etching and redox reactions. The effect of He was insignificant. Kinetic analysis and fixed-bed fast pyrolysis experiments of cellulose after pretreatment were performed. Kinetic analysis of cellulose pyrolysis after pretreatment revealed a substantial decrease in the E a in O 2 -cold plasma (O 2 -CP) (from 222 to 195 kJ/mol). It indicated that the O 2 -CP pretreatment facilitated the thermal decomposition of cellulose. The pyrolysis volatile was evaluated by real-time tracking to analyze pyrolysis behaviors. The results showed that the liquid product yield increased to 62% under both O 2 –80 kV-20 min and H 2 –80 kV-10 min, and the corresponding anhydrosugars yields were 54.32% and 50.82%, respectively. These results are attributed to distinct active species from oxygen and hydrogen plasmas influencing the structure of key intermediates for anhydrosugars formation. The present study elucidated the directional reconstruction effect of plasma atmosphere on cellulose structure, influencing the subsequently preferred pyrolysis pathway, providing a theoretical basis and technical support to facilitate the high-value conversion of biomass. Download: Download high-res image (149KB) Download: Download full-size image
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2026
·
IF 8.7
Cheng Liu,Shan He,Jiayi Jiang,Cheng Yin,Quanchao Zhang
Collagen modified integrated porous BC based tri-layer scaffold (CIPBC) was formed. • CIPBC-2 achieved balanced bioactivity and porosity. • CIPBC-2 enhanced chondrocyte and MC3T3-E1 adhesion, spreading and proliferation. • CIPBC-2 promoted osteochondral regeneration in rabbit defect models in vivo. Construction of integrated porous tri-layer osteochondral scaffolds that can both mimic the complex structure of the osteochondral region and be endowed with bioactivity is highly desirable for osteochondral defect repair. Herein, we fabricated an integrated porous bacterial cellulose (IPBC) scaffold via laser etching, then modified it with type I collagen to obtain collagen-functionalized IPBC (CIPBC-1–3) scaffolds. Compared with IPBC, collagen modification significantly increased fiber diameter of the scaffolds and decreased their porosity. In this context, the porosity of IPBC and CIPBC-1–3 was 88.6 ± 3.0%, 85.6 ± 3.4%, 80.9 ± 1.2%, and 77.5 ± 2.2%, respectively. Furthermore, the collagen modification also enhanced mechanical strength and modulated porosity of IPBC. In vitro experiments demonstrated that, compared with IPBC, CIPBC-1–3 scaffolds promoted chondrocyte and MC3T3-E1 cell adhesion, spreading, and proliferation, with CIPBC-2 showing optimal biocompatibility. In vivo rabbit osteochondral defect models confirmed that, when compared with IPBC, CIPBC-2 (selected as the model) accelerated bone-cartilage regeneration at 6 and 12 weeks post-implantation, as evidenced by micro-CT and histological analyses. This study provides a biomimetic collagenized integrated porous tri-layer scaffold with great potential for osteochondral tissue engineering.
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高影响因子
CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Yushan Zou,Lishi Wei,An Yang,Shanshan Song,Saira Sharafat,Xueting Dong,Yongming Song
Flexible hydrogel-based sensors have attracted considerable attention for applications in human motion monitoring, health management, electronic skin, and human-machine interaction. However, it remains challenging to develop hydrogel-based strain sensors that simultaneously possess good mechanical properties, self-adhesion, self-healing capability, and antibacterial activity. Herein, polydopamine-coated cellulose nanofibers (CNF@PDA) and polyaniline (PANI) were incorporated into a polyacrylamide (PAM) network to fabricate a multifunctional CNF@PDA/PANI (x) /PAM (CPP x P) hydrogel. The introduction of CNF@PDA not only enhances the mechanical strength and adhesion of the hydrogel, but also improves the dispersion stability of PANI, thereby contributing to enhanced conductivity and sensing stability. As a result, the obtained hydrogel exhibits a tensile strength of 0.073 MPa, an elongation at break of 859.3%, excellent self-healing capability, an adhesion strength of 42.73 kPa on porcine skin, and good antibacterial activity. Importantly, the hydrogel can be used as a strain sensor with high sensitivity (GF = 7.95), a rapid response of 120 ms, and excellent durability over 500 cycles. The sensor is capable of monitoring both subtle and large human motions, highlighting its great potential for applications in flexible wearable devices and intelligent sensing systems.
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高影响因子
ACS Omega
·
2026
·Vol. 11
·期 29
·43397-43411
·
IF 5.2
Chen Chihao,Fu Chenyong,Liu Yifan,Chao Yidan,Cui Li,Li Yanyan,Zheng Haolong,Xue Jingdong,Li Zhe
Inspired by the natural synchronization of organic matrix
biosynthesis
and inorganic mineral deposition in coral reefs, this study introduces
a novel synchronous in situ biomineralization method. This strategy
aims to overcome the challenges of weak interfacial bonding and complex
processing in the fabrication of bacterial cellulose/calcium–phosphorus
composites (BC/Ca–P). Calcium gluconate was used as a dual-functional
precursor by substituting d -glucose in culture medium to
simultaneously supply a carbon source for BC biosynthesis and calcium
ions (Ca 2+ ) for mineralization at different substitution
ratios (10% for BC-CaG 10 and 100% for BC-CaG 100 ). We achieved concurrent biosynthesis of the BC matrix and deposition
of Ca–P phases, leading to a unique inorganic–organic
architecture in which Ca–P nanoparticles were uniformly anchored
within the BC nanofibrous network and strongly integrated by interfacial
interactions. Consequently, the moderate mineralization in BC-CaG 10 significantly enhanced the mechanical strength through a
synergistic reinforcement mechanism, reaching 12.03 MPa, representing
a 115% increase compared to that of pure BC. Conversely, the high
mineral content of BC-CaG 100 facilitated the formation
of a bioactive hydroxyapatite (HAP) phase, providing abundant active
sites. In preliminary biomedical evaluations, the fabricated composites
exhibited favorable biocompatibility. Notably, BC-CaG 100 exhibited efficient hemostatic performance in a rat tail amputation
model, reducing hemostasis time by 71% (to 142 s) and blood loss by
97% (to 15 mg). This study presents a facile, scalable, and green
approach for preparing novel biomimetic materials with promising potential
for biomedical applications, including tissue engineering and wound
management.
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PubMed
高影响因子
JOURNAL OF MEMBRANE SCIENCE
·
2026
·
IF 8.8
Xin Yang,Yinghui Liu,Jili Wang,Chao Ma,Yuxiang Du,Dan Liu,Rui Fu,Huazheng Sai
Particulate matter (PM) pollution poses a significant threat to public health, and there is an urgent demand for air filters that can efficiently remove PM. However, achieving high filtration efficiency is often accompanied by a significant increase in air resistance. This efficiency–resistance trade-off presents a major challenge for advancing high-performance filtration membranes. Herein, biodegradable bacterial cellulose aerogel membranes were engineered through freeze-casting technology, utilizing ultra-fine nanofibers (20-30 nm in diameter) with significantly reduced fiber dimensions compared with existing filters, thereby achieving an optimal efficiency–resistance balance in PM filtration. The filter achieves ultra-high PM 0.3 filtration efficiency (>99.99%) and an ultralow pressure drop of only 22 Pa at an airflow rate of 8 L min −1 , corresponding to normal human breathing conditions. Furthermore, a rigid silica layer uniformly coated onto the surface of cellulose nanofibers by chemical vapor deposition technology endowed them excellent elasticity and moisture resistance. Importantly, it can completely decompose in composted soil within 6 weeks. This study provides guidance for the industrial production of biodegradable and moisture-resistant high-performance nanofiber air filters.
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高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 5.2
Weimin Zhang,Mi Chen,Xiaotong Lu,Jianfei Liu,Lixu Yue,Hui Yang,Xiaocheng Li,Sen Yu,Wenhao Zhou
Current bone repair materials struggle to integrate mechanical support, bioactivity, and antibacterial function, particularly those capable of mimicking the multiscale structure and regulating the local ionic microenvironment of natural bone. Herein, a biomimetic multilevel composite hydrogel based on a natural luffa sponge (LS) was constructed by combining a Zn2+-coordinated LS framework (Zn-WLS) with a hydroxyapatite-reinforced poly(vinyl alcohol) hydrogel (HA-PVA). The Zn-WLS/HA-PVA composite hydrogel exhibited substantially enhanced mechanical properties: a compressive strength of 4.2 MPa and a Young’s modulus of 14.9 MPa at 70% strain, representing approximately 10-fold and 300-fold increases over the pure HA-PVA hydrogel, respectively. It also demonstrated high fatigue resistance and strain-responsive energy dissipation with an energy dissipation density of 23.23 kJ·m–3. In simulated body fluid, the composite hydrogel enabled relatively controlled Zn2+ release and active Ca2+ uptake, rapidly inducing the formation of a bioactive bone-like calcium-deficient apatite layer (Ca/P ≈ 1.5) on its surface. In vitro biological evaluations confirmed negligible cytotoxicity toward MC3T3-E1 preosteoblasts, significantly enhanced early osteogenic differentiation, further promoted matrix mineralization and collagen deposition at the late stage of osteogenesis, and markedly upregulated the osteogenesis-associated genes Runx2, ALP, COL, and OCN, and high broad-spectrum antibacterial efficacy against both Escherichia coli (E. coli) and Staphylococcus aureus (S. aureus) (>98.5% inhibition). Through a “molecular-nano-micro-macro” multiscale synergistic strategy, this work successfully fabricates a cellulose-based composite hydrogel that integrates high strength, controllable ion exchange, osteogenesis promotion, and antibacterial function, offering a promising design strategy for bone repair scaffolds with integrated mechanical and biological functions.
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ACS Sustainable Chemistry & Engineering
·
2026
·
IF 7.6
Yusi Huang,Han Wang,Sining Huang,Zhiguo Li,Chengyu Wang,Siqi Huan
Achieving a balance between high strength and toughness in biodegradable polymer fibers such as poly(vinyl alcohol) (PVA) remains a major challenge in sustainable materials design. Notably, TEMPO-oxidized cellulose nanofibers (TOCNF), featuring high aspect ratio, abundant surface hydroxyl and carboxyl groups, and excellent sustainability, serve as efficient reinforcing elements by constructing dense hydrogen-bonding networks and facilitating effective stress transfer. Here, we fabricated PVA/TOCNF composite fibers via wet spinning using a dimethyl sulfoxide (DMSO)–water mixed coagulation bath, which optimizes solubility and spinning viscosity. The synergistic combination of TOCNF–PVA hydrogen bonding and chain alignment during spinning significantly enhanced the mechanical properties. The resulting fibers exhibit remarkable ductility (elongation at break of 442.5%) and high tensile strength (131.4 MPa in the dry state and 3.12 MPa in the wet state) within an ultrashort coagulation bath residence time (∼4.57 s in total). Compared with pure PVA fibers, their dry and wet tensile strengths increased by 406% and 165%, respectively, effectively mitigating the drastic loss of strength under wet conditions. These biocompatible and biodegradable composite fibers provide a materials-design strategy for developing next-generation sustainable and flexible fibrous systems, with potential relevance to wearable and biomedical applications.
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高影响因子
ACS Applied Polymer Materials
·
2026
·
IF 5.2
Xiao Yu,Jiaqi Li,Hao Zhou,Dongdong Han,Yan Xu
Chiral nematic cellulose nanocrystal films are one-dimensional photonic crystals, which receive a lot of attention in many fields, including visible sensors and actuators, anticounterfeiting, iridescent coatings, and other photonic materials that profit from the unique optical properties. Herein, we report a dual-actuated bilayer film of cellulose nanocrystals and graphene oxide for circular polarization encryption. The bilayer structure is capable of reversible shape deformation in response to humidity and NIR irradiation, accompanied by tunable circular polarization properties. The shape deformation generates the band gap of cellulose nanocrystal layer blue shift with the increase of incident light angle, and the peak wavelength of the cellulose nanocrystal layer no longer matches the original photosource. Different patterns appear on the degree of circular polarization (DOCP) distribution map resulting from incident angle-dependent circularly polarized reflection. The cellulose nanocrystal-based bilayer film shows unique potential for circular polarization display of humidity actuators.
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危险品化学品经营许可证（带存储）