INDUSTRIAL CROPS AND PRODUCTS
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2024
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IF 5.6
Jiahuan He,Chunhong Zhang,Yingying Wang,Yuning Gong,Lanyue Zhang,Hao Liu,A. Yuhui,Lei Shang
Advancing bio-based non-isocyanate polyurethanes (NIPUs) is vital for fostering sustainable development. This study, inspired by the concept of "rigid and flexible" successfully utilized resveratrol , epoxidized soybean oil, and carbon dioxide (CO 2 ) to produce a novel type of NIPUs (CRSOP) with outstanding mechanical properties, recyclability, and adhesive properties . Test results reveal that CRSOP demonstrates a tensile strength of 20.85 MPa and an elongation at break surpassing 160 %. The synthesized CRSOP shows excellent recyclability, with a recycling efficiency of over 80 % even after three cycles. Additionally, the rich polar groups in CRSOP contribute to its exceptional adhesion on diverse substrates such as copper (5.29 MPa), steel (7.48 MPa), aluminum (6.12 MPa), glass (4.71 MPa), and polytetrafluoroethylene (1.75 MPa). Even after prolonged immersion in organic solvents , CRSOP maintains a lap shear strength comparable to the initial value, demonstrating outstanding environmental tolerance. This paper showcases a superior-performing NIPUs derived from renewable resources and simultaneously expands its extensive application in the adhesive field.
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Journal of Water Process Engineering
·
2024
·
IF 6.3
Can Cai,Longfei Gao,Yuzhu Xiong
In this work, Fe 3 O 4 magnetic particles were in-situ grown on the surface of Montmorillonite (MTT) via co-precipitation method, and a green, recyclable chitosan (CS)/carboxymethyl cellulose (CMC)/sodium alginate (SA)/MMT-Fe 3 O 4 double network (DN) hydrogel (C-M-SD/MMT-Fe 3 O 4 ) was successfully synthesized. The magnetization of MMT-Fe 3 O 4 addition improved the maximum compressive strength of CS/CMC/SA double network hydrogel (C-M-SD), reaching 17.13 kPa. The adsorption capacities of the magnetized DN hydrogel for methylene blue (MB) and Cu 2+ were 224.49 mg/g and 121.15 mg/g, respectively. Moreover, cytotoxicity tests using CCK8 solution showed that the cell activity was >80 % after 24 h culture in the prepared hydrogel extracts, which demonstrated that the prepared hydrogel adsorbent did not release any toxic substances into the water source throughout the adsorption process . It can be concluded from the Vibrating Sample Magnetometer (VSM) that the saturation magnetization of the prepared magnetic double-network hydrogel reaches 15 emu/g and the coercivity is 0, showing the superparamagnetism . The synthesized C-M-SD/MMT-Fe 3 O 4 hydrogel possesses excellent mechanical properties, natural degradability, recyclability and biocompatibility, making it an ideal candidate for wastewater treatment applications.
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CHINESE JOURNAL OF CHEMICAL ENGINEERING
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2026
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IF 3.5
Shoukang Xiao,Ze Qin,Junying Chen,Liyu Chen,Kui Shen
A novel strategy is developed to heterogenize homogeneous cocatalysts. • Optimal nanoreactors are highly active and size-selective for CO 2 fixation. • The catalytic mechanism of CO 2 cycloaddition over OM@x-m-UiO-66/PBr is revealed. The cycloaddition of CO 2 with epoxides represents a promising strategy for mitigating CO 2 emissions. However, most heterogeneous catalytic systems still rely on homogeneous halogen-based cocatalysts to achieve desirable activities, which significantly complicates subsequent product purification and separation. Herein, we report a facile strategy to heterogenize homogeneous Br-based cocatalysts by encapsulating them into within stable UiO-66-based core–shell nanoreactors for efficient CO 2 fixation. Specifically, ordered mesoporous Ce-based UiO-66 (OM-UiO-66) was first synthesized via a soft-template method. The homogeneous Br-based cocatalyst was then adsorbed into the mesopores of OM-UiO-66, followed by epitaxial growth of a microporous Ce-based UiO-66 shell with controllable thickness to complete the encapsulation, thereby yielding a size-selective nanoreactor that possesses both 0.6 nm sieving channels and 10 nm reaction channels. Importantly, the synergistic interactions among the high concentration of the cocatalyst confined in the mesopores, the abundant Lewis acidic Ce sites on the pore walls, the mesoporous microenvironment that facilitates the enrichment of CO 2 and epoxide substrates, and the judiciously controlled thickness of the microporous shell collectively impart the as-prepared nanoreactor with high catalytic activity, excellent recyclability, and remarkable substrate size selectivity for the cycloaddition of CO 2 with epoxides under ambient conditions. This work not only develops a novel strategy for the efficient fixation of CO 2 via the heterogenization of homogeneous catalysts with a novel MOF-based core–shell architecture, but also provides a compelling paradigm for the heterogenization of other homogeneous catalysts. The heterogenization of homogeneous Br-based cocatalysts is realized by encapsulating them into a new kind of stable UiO-66-based core–shell nanoreactors for efficient and size-selective CO 2 cycloaddition with epoxides under ambient conditions. Download: Download high-res image (370KB) Download: Download full-size image
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JOURNAL OF COLLOID AND INTERFACE SCIENCE
·
2026
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IF 9.6
Kai Liu,Ziling Liu,Tuanhui Li,Wasim Afzal Muhammad,Xue Liu,Dongbin Dang,Yan Bai
Developing highly efficient single-atom catalysts (SACs) with optimal active-site utilization remains challenging. In this study, a hollow macroporous-mesoporous catalyst composed of iron single atoms supported on nitrogen-doped carbon (Fe/NC) was synthesized using silica microspheres as a sacrificial template and dopamine hydrochloride as a bifunctional C/N source and iron-anchoring ligand, and applied to the CO 2 cycloaddition reaction. According to the experimental results, the Fe/NC catalyst demonstrates exceptional performance in the cycloaddition reaction of styrene oxide with CO 2 , achieving a high yield of 97.45 ± 0.33% (turnover frequency (TOF) = 38.19 h −1 ), despite having an extremely low iron loading of only 1.36 ± 0.01 wt%. This is attributed not only to the superior intrinsic catalytic activity of the Fe N 4 active sites but also to the hollow mesoporous structure with a high specific surface area, which provides stable metal anchoring sites to effectively suppress iron atom aggregation, promotes continuous release of substrates and CO 2 , enhances product diffusion, and thereby improves catalytic efficiency. In addition, the Fe/NC catalyst demonstrates excellent cycling stability, maintaining a high conversion efficiency of 93.26 ± 0.52% after five consecutive recycling tests while preserving its structural integrity. Moreover, the Fe/NC catalyst exhibits broad substrate compatibility. This work provides a theoretical basis for synthesizing porous C/N materials with single-atom loading to achieve efficient catalytic conversion of carbon dioxide Download: Download high-res image (139KB) Download: Download full-size image
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REACTIVE & FUNCTIONAL POLYMERS
·
2026
·
IF 5.4
Xingyu Hu,Zhiyong Li,Xiaoge Li,Xiangyan Ji,Jingjing Meng
A highly conjugated biobased liquid HPE monomer was fabricated from HMF. • The benzimidazole motif HPE contributes to a relatively mild curing behavior. • The HPE endows the resin with favorable mechanical properties and dimensional stability. • The HPE networks showed good solvent resistance and shape memory. • This strategy provided a tractable biocomposite fabrication. A novel bio-based epoxy monomer (HPE) bearing a rigid benzimidazole-furan skeleton was synthesized from 5-hydroxymethylfurfural (5-HMF). The activation energy for HPE-derived networks was relatively lower than that of the DGEBA counterparts, indicating favorable curing conditions. The cured HPE-thermosets exhibited exceptional mechanical properties. For instance, HPE/APB achieved good tensile strength (105.67 ± 13.43 MPa), flexural strength (125.43 ± 16.65 MPa), and impact strength (17.99 ± 1.10 kJ m −2 ). Moreover, the thermomechanical investigation also suggested its advantageous storage modulus of 3.55 GPa at 30 °C, which surpassed the petroleum-based DGEBA counterparts. Notably, HPE-networks displayed unique dimensional stability with a thermal expansion coefficient ranging from 87 to 115.4 ppm °C −1 below 200 °C. In contrast to DDM-cured thermoset, APB-cured networks also favored decreasing dielectric constant and loss. On the whole, the APB hardener outperformed the DDM in most cases. Furthermore, glass fiber-reinforced HPE composites demonstrated 90.8% peeling off in DMF under microwave-assisted conditions, making sustainable fiber recycling possible. This work provides a promising strategy for HMF-related renewable epoxy resins. Download: Download high-res image (147KB) Download: Download full-size image
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CARBOHYDRATE POLYMERS
·
2026
·
IF 13.2
Guancheng Liu,Zhe Zhang,Xin Long,Kai Zhang,Bai Yang
Hemoperfusion is an effective technique for removing low-density lipoprotein (LDL) from the bloodstream, with the performance of the adsorbent critical to its efficacy. This study innovatively introduces carbonized polymer dots (CPDs), which exhibit excellent biocompatibility and structural versatility, as a new functional ligand in hemoperfusion. A novel hemoperfusion adsorbent was prepared using cellulose microspheres as the support material. Here, we synthesized highly negatively charged CPDs using a hydrothermal method facilitated by nitric acid in the presence of citric acid and p-aminosalicylic acid. This process resulted in a stable zeta potential of −61.0 mV at physiological pH. Incorporating CPDs onto cellulose microspheres enhanced their negative charge from −1.22 mV to −31.0 mV, significantly improving LDL adsorption capacity to 80.3 ± 1.2 mg/g, with a removal rate of 80.3 ± 1.2%, which is 5.7 times greater than high-density lipoprotein (HDL). Furthermore, the introduction of CPDs improved the hemocompatibility of cellulose microspheres, resulting in a low hemolysis rate of 0.81% and minimal cytotoxic effects. FTIR and XPS characterization confirmed that the CPDs contain carboxyl and nitro groups, enhancing their negative charge properties. This research presents a new class of functional ligands for hemoperfusion adsorbents, indicating potential advancements in blood purification technologies.
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ACS Applied Materials & Interfaces
·
2026
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IF 7.8
Jun Zhu,Jian Wang,Yumeng Gao,Jian Chen,Guomin Wu,Guifeng Liu,Can Jin,Ning Yan
Developing sustainable high-performance composites is crucial for achieving circularity in advanced structural materials. Herein, we report a fully bio-based strategy for constructing recyclable carbon fiber-reinforced composites (CFRCs) based on dynamic non-isocyanate polyurethane (NIPU) matrices. Three cardanol-derived amine curing agents with tunable functionalities were rationally designed and synthesized from renewable cardanol, and subsequently reacted with lignin-derived cyclic carbonates (LCCs) to form a robust yet reprocessable NIPU network. Structure–property analyses reveal that the molecular architecture of the cardanol-derived curing agents governs the balance between network rigidity and flexibility, thereby tailoring the thermomechanical performance of the NIPUs. Optimizing carbonate structures and amine functionality yields polymers that combine high mechanical strength (tensile strength: 44.5 MPa) with excellent thermal and solvent resistance. The presence of hydroxyurethane linkages confers dynamic covalent character via reversible transcarbamoylation, imparting efficient reprocessability and pronounced multiple–shape-memory effects. Notably, the reprocessed NIPU retains >75% of its initial tensile strength after three hot-pressing cycles. As CFRC matrices, the optimized NIPU ensures outstanding interfacial adhesion and closed-loop recyclability, allowing solvent-assisted deconstruction to recover carbon fibers with nearly preserved mechanical integrity. This research establishes an eco-friendly and scalable approach to producing entirely renewable, recyclable and superior-performance composite materials for sustainable engineering applications.
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ACS Applied Polymer Materials
·
2026
·Vol. 8
·期 14
·11654-11668
·
IF 5.2
Huang Junjie,Long Haibo,Gu Jin,Zhou Yonghui,Lin Xiuyi,Xu Jiangtao,Hu Chuanshuang
Lignocellulosic
residues, particularly those with a high hemicellulose
content, represent a hitherto underutilized resource for the production
of functional materials. Camellia oleifera shells (COS) have been identified as a potentially valuable feedstock
for the production of value-added materials. In this study, carbon
quantum dots (CQDs) were synthesized efficiently from COS holocellulose
(COSH) by a microwave-assisted method using urea and malic acid as
auxiliary reagents. The obtained carbon quantum dots (CQDs) exhibited
uniform particle sizes (3–5 nm), clear lattice fringes, and
abundant surface functional groups, together contributing to pronounced
pH-dependent fluorescence behavior. Meanwhile, the preparation of
biodegradable regenerated COSH films (rCF) involved the dissolution
and regeneration of COSH in 1-butyl-3-methylimidazolium chloride ([Bmim]Cl).
The incorporation of 2 wt % ascorbic acid during the dissolution process
has been shown to effectively mitigate thermo-oxidative degradation,
thereby facilitating the regeneration of films that exhibit enhanced
crystallinity, a more compact structure, and augmented mechanical
strength (up to 92.19 MPa). The anchoring of CQDs onto rCF resulted
in the fabrication of a flexible and fully biodegradable pH-responsive
composite film. The resulting CQD-loaded regenerated COSH film (C-rCF)
exhibited rapid, reversible, and visually distinguishable fluorescence
changes over a pH range of 3–11. This study provides an efficient
and environmentally friendly route for converting agricultural waste
into functional holocellulose-based materials, offering a basis for
the development of a biodegradable fluorescent composite film.
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Molecular Catalysis
·
2026
·
IF 4.3
Shuo Wang,Jing Ding,Yichang Pan,Hui Wan,Guofeng Guan
Chitosan-supported pyridinium ionic-liquid catalysts were prepared. • Halide, DD, and ionic-liquid loading effects were systematically studied. • Br-IL2Cs-90DD gave 95% cyclic carbonate yield at 0.5 MPa CO 2 . • The catalyst retained high activity over five consecutive cycles. • DFT revealed cooperative activation by N⁺, Br⁻, and chitosan –OH sites. Developing recyclable heterogeneous organocatalysts with clearly identifiable cooperative active sites is important for the mild and solvent-free cycloaddition of CO2 with epoxides. Herein, a chitosan-supported pyridinium ionic-liquid catalyst was constructed by covalently immobilizing bifunctional ionic-liquid moieties onto renewable chitosan through Schiff-base chemistry. The catalyst integrates pyridinium cations, Br⁻ nucleophiles, Schiff-base linkages, and chitosan hydroxyl groups into a cooperative heterogeneous catalytic environment. Among the investigated structural variables, the bromide-containing catalyst prepared from high-deacetylation chitosan (Br-IL2Cs-90DD) showed the best performance, affording 96% epichlorohydrin conversion, 99% cyclic carbonate selectivity, and 95% cyclic carbonate yield at 80 °C and an initial CO 2 pressure of 0.5 MPa within 4 h under solvent-free conditions. This performance is competitive with representative heterogeneous ionic-liquid and biomass-supported catalysts operating under mild-pressure conditions. The recovered catalyst retained 94% conversion, 98% selectivity, and 93% yield after five consecutive cycles, and post-reaction FT-IR/XPS characterization further supported the structural retention of the immobilized ionic-liquid catalyst. Characterization and density functional theory calculations support the proposed cooperative catalytic mechanism, in which the pyridinium cation and Br⁻ promote epoxide activation and ring opening, while chitosan hydroxyl groups help stabilize alkoxide and carbonate-related species. This work provides a biomass-derived immobilized ionic-liquid catalyst for metal-free CO 2 -to-carbonate conversion and offers molecular-level insight into cooperative active-site design. Download: Download high-res image (271KB) Download: Download full-size image
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ADVANCED MATERIALS
·
2026
·
IF 29.1
Shutao Zhang,Jiamin Fu,Guantai Hu,Suzhe Liang,Yu Zheng,Chao Wang,Shengjie Xia,Pushun Lu,Jiaxu Zhang,Mingying Zhang,Mingfeng Wei,Jian Hong,Ziqing Wang,Zhimin Zhou,Jian Peng,Liwei Chen,Xueliang Sun,Changhong Wang
Halide solid electrolytes (SSEs) hold promise for next-generation all-solid-state batteries (ASSBs), yet scalable fabrication of halide SSE films and ampere-hour-scale all-solid-state pouch cells (ASSPCs) via slurry coating has not been demonstrated. Here, we introduce a dual-solvent supramolecular assembly strategy that precisely regulates the chain organization of a multiblock copolymer binder (SEEPS), enabling low-binder, high-viscosity slurries for uniform halide SSE film formation. Methylcyclohexane and decane are identified as chemically compatible solvents that diminish InCl 3 surface precipitation in Li 3 InCl 6 , preserving ionic conductivity. The resulting Li 3 InCl 6 /Li 6− x PS 5− x Cl 1+ x bilayer SSE film exhibits high ionic conductivity (1.26 mS/cm), mechanical robustness, and electrochemical stability. ASSBs using NCM88 cathodes and micro-silicon anodes retain 71.3% capacity after 600 cycles at 0.5 C, while the first ten-layer ampere-hour-scale halide ASSPC delivers 1.45 Ah at 0.2 C with 95.1% capacity retention over 100 cycles. This approach establishes a practical and scalable pathway for fabricating halide ASSPCs, bridging laboratory innovations and commercial deployment.
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COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
·
2026
·
IF 5.4
Xuan Shi,Xiuxiu Zhao,Lu Li,Bing Yuan,Fengli Yu,Shitao Yu
The development of high-performance bio-based paper sizing agents is challenging. By chemically modifying the abundant natural resource rosin and using a recyclable deep eutectic solvent (DES) [CoCl 2 ·6 H 2 O][ChCl] 2 as the catalyst to catalyze both the dimerization of rosin and the subsequent epoxidation of rosin dimer, a bio-based epoxy resin sizing agent containing active epoxy groups and a hydrophobic polycyclic structure unit was synthesized. The structure of the epoxy resin was characterized using Fourier transform infrared (FT-IR) and 1 H nuclear magnetic resonance (NMR) spectroscopy. The thermogravimetric (TG) analysis showed that the epoxy resin was stable below 150 °C. Combined with quantitative calculations, the existence of coordination and hydrogen bonds in the DES matrix and the stability of DES catalyst were confirmed. A detailed study was conducted on the various factors influencing the properties of the epoxy resin emulsion. Under the conditions of a composite emulsifier (AEO-9: SLES = 1: 4, mass ratio) dosage of 10 % of the emulsion weight, an oil-water mass ratio of 1:1.25, a temperature of 130 ℃, and a stirring speed of 800 rpm, a highly stable resin emulsion with a high solid content (48.02 wt%) was prepared. The prepared epoxy resin emulsion was used for both surface sizing and internal sizing of the paper, and the sizing properties were evaluated using scanning electron microscopes, water resistance, tensile strength, tear resistance, and folding endurance. Surface sizing mainly relies on the hydrophobic surface covering of the sizing agent. The prepared epoxy resin has excellent film-forming properties, which enhances the water resistance of the paper. Internal sizing is achieved through the formation of covalent bonds between the epoxy groups of the resin and the hydroxyl groups of cellulose, forming a dense network structure, which helps to enhance water resistance. Furthermore, whether for surface sizing or internal sizing, the polycyclic structure units in the epoxy resin further enhance the water resistance and mechanical properties of the paper. By applying surface sizing and internal sizing, the water resistance of the paper can increase by 80.2 % and 50.4 % respectively, and the tensile strength can increase by 110.7 % and 48.2 % respectively. The applicability study shows that the straws made from the sized paper have great potential to replace plastic straws. This work shares a green preparation method for a novel bio-based sizing agent and its application, providing a promising and sustainable alternative to petroleum-based sizing agents for paper production.
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CHEMICAL ENGINEERING JOURNAL
·
2026
·
IF 12.5
Hanxiang Guo,Ping Zhang,Hao Yuan,Menglong Zhu,Chunde Jin,Zhe Wang
As a major carbon resource, carbon dioxide recycling can effectively address issues of the greenhouse effect and carbon resource shortages. Carbon dioxide based polypropylene carbonate (PPC) is a polymer material produced from carbon dioxide and propylene oxide, with advantages in environmental protection and sustainability. However, its relatively low thermal stability severely limits its application prospects. In this study, a novel cellulose acetate grafted carbon dioxide based polypropylene carbonate (CA-DMC-CO 2 ) ultrafiltration membrane was prepared by epoxidation and high-pressure catalysis of cellulose acetate side chains. The molecular weight of CA-DMC-CO 2 was 428,169 Da, and its thermal decomposition temperature reached 365 °C. The introduction of polycarbonate side chains endowed the CA-DMC-CO 2 ultrafiltration membrane with good hydrophilicity and excellent permeability, reaching 115.9 L/m 2 h, which performed better than the CA ultrafiltration membrane. In addition, good hydrophilicity of CA-DMC-CO 2 provided effective anti-fouling performance. This study highlights the potential for developing environmentally friendly and sustainable ultrafiltration membranes for practical applications.
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危险品化学品经营许可证（带存储）