CHEMICAL ENGINEERING JOURNAL
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2026
·
IF 12.5
Jiao Meng,Enqing Zhu,Ziliang Dai,Qing Zhang,Leixin Huang,Jinxia Ma,Lili Zhang,Zhiguo Wang
Developing cellulose paper that is both waterproof and mechanically robust under wet conditions remains a key challenge for sustainable packaging. Herein, a green and synergistic modification strategy is proposed to simultaneously enhance the water resistance and wet mechanical strength of cellulose paper via a solvent- and catalyst-free two-step process. Maleic anhydride (MAH) is first grafted onto cellulose fibers, followed by in situ ring-opening crosslinking of epoxidized soybean oil (ESO), constructing a dense covalently bonded hydrophobic network within the fiber matrix. As a result, the modified paper exhibits excellent waterproof performance, with a high water contact angle of 118° and a low Cobb value of 30.8 g/m 2 after 1 h. Notably, it retains a high dry tensile strength of 49.6 MPa and achieves a wet tensile strength of 20.8 MPa, approximately 30 times higher than that of untreated paper. In addition, the paper demonstrates enhanced thermal stability, nearly complete biodegradation within 100 days in soil burial tests, and confirmed safety based on residual MAH analysis. This work provides an effective and sustainable strategy for developing high-performance, fully biodegradable cellulose-based alternatives to conventional plastics.
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CARBOHYDRATE POLYMERS
·
2025
·
IF 12.5
Jinlong Zhang,Shiyu Fu,Hao Liu,Juanli Shen,Xi Yuan,Xuepei Zhou
Bioplastics based on lignin-containing cellulose nanofibrils (LCNF) have emerged as attractive alternatives to petrochemical plastics. However, the preparation of LCNF-based bioplastics with excellent wet-mechanical properties and water stability remains challenging. This study reports a sustainable route for the preparation of LCNF-based bioplastics with excellent wet mechanical properties and water stability. First, a deep eutectic solvent was employed to pretreat the bamboo powder to partially remove lignin. Then, the pretreated bamboo powder was esterified by one-step maleic anhydride (MAH) esterification to produce maleic anhydride-esterified LCNF (MLCNF). MLCNF exhibits a high aspect ratio (337), fine diameter (4.6 nm), and high surface charge (1.67 mmol/g). These properties endow MLCNF bioplastics with excellent wet elongation at break (41 %, significantly higher than other cellulose-based bioplastics), wet tensile strength (43.5 MPa), wet toughness (9.8 MJ m −3 ), dry tensile strength (164 MPa), dry toughness (15.7 MJ m −3 ), thermal stability, hydroplastic properties, and water stability (water contact angle: 91°). This research provides a straightforward, eco-friendly, and efficient approach for developing bioplastics with excellent wet mechanical properties and water stability using renewable lignocellulosic resources, with the potential to replace petrochemical plastics.
研究领域:
材料科学
·
生物质资源利用
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PubMed
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Polymer Chemistry
·
2025
·Vol. 16
·期 42
·4686-4695
·
IF 3.9
Ranran Gao,Qu Wang,Qian Li,Chenchi Hua,Xiaoning Guo,Li Wang,Wantai Yang
Stimuli-responsive aggregation-induced emission (AIE) active polymers hold great promise for a wide range of future applications. In the present work, an efficient post-polymerization modification approach was developed to synthesize AIE-active polymers with commercial poly(ethylene-alt-maleic anhydride) (PEM) as the parent polymer and 2-(4-(1,2,2-triphenylvinyl)phenoxy)ethan-1-amine as a model modification reagent. By performing hydrolysis, amidation, or esterification reactions on the maleic anhydride groups, we obtained four types of tetraphenylethylene-appended PEM derivatives successfully. The PEM derivatives displayed wide range-tunable pH-responsive emission characteristics as well as CO2- and H2O2-responsive photoluminescence depending on the functional side groups introduced. These intriguing results highlight the effectiveness and importance of post-polymerization modification in obtaining highly customizable structures and ‘signaling’ performance in stimuli-responsive AIE-active polymers.
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Molecular Catalysis
·
2024
·
IF 3.9
Chengliang Wang,Yin Zhang,Haitao Li,Feifan Zhang,Jie Wang,Wei Wei,Yongxiang Zhao
Core-shell Ni@C catalysts with a uniform grain size distribution were synthesised via a simple hydrothermal method followed by pyrolysis carbonisation, and their catalytic performance for the liquid-phase hydrogenation of maleic anhydride (MA) was investigated herein. When the pyrolysis temperature was 350 °C, the resulting Ni@C catalyst (Ni@C-350) possessed abundant Ni/NiO heterostructures and a carbon surface layer. Among the analysed catalysts, Ni@C-350 demonstrated the lowest apparent activation energy for the hydrogenation of C C bonds ( Ea = 34.3 KJ/mol) and C O bonds ( Ea = 65.18 KJ/mol), yielding an MA conversion of 100 % and a γ-butyrolactone (GBL) selectivity of 99.89 % under mild reaction conditions (200 °C, 3 MPa hydrogen pressure, and 0.05 g catalyst). Furthermore, the Ni@C-350 catalyst exhibited high stability, with the yield of GBL above 95 % after five consecutive usage cycles. Ni@C-350 significantly outperformed other previously reported catalysts for the liquid-phase hydrogenation of MA.
研究领域:
化学工程
·
催化材料科学
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JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
·
2024
·
IF 2.3
Xinrui Wu,Qiong Lan,Junlong Yao,Yalan Tian,Susu Li,Zhitian Deng
To synchronously strength and plasticize unsaturated polyester resin (UPR), maleic anhydride were directly added in the unsaturated polyester resin solution and form the styrene-maleic anhydride oligomer (SMAO) without initiation. The creating SMAO cross link with UPR by curing reaction, and the prepared UPR resin exhibit higher tensile, elongation, bending strength and higher impact strength simultaneously, 0.45, 0.36, 0.76 and 0.12 times than UPR matrix, SMAO-UPR exhibits obvious plastic fracture characteristics; The DSC result indicates that the curing degree of SMAO-UPR is 96.55% which is 1.45% lower than that of UPR; The TG result indicates that MA and St mainly form an alternating copolymer below 90°C. The SEM and DMA result indicates that SMAO improves the morphology and structure which shows plastic deformation of UPR, and there is a certain interface effect between SMAO and UPR. Compared with the traditional method of large molecular weight SMA modified UPR, this method of reinforcing UPR is better for mechanical property, easy to operate, inexpensive, and highly applicable in industrial production.
研究领域:
材料科学
·
高分子化学
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SEPARATION AND PURIFICATION TECHNOLOGY
·
2026
·
IF 9
Mengjie Qian,Zhiguo Yan,Man Xu,Cunwen Wang,Yanbo Li
Synthesis of nanofiltration membranes with antifouling performance using simple and green methods is crucial for nanofiltration membrane development. This work presents a novel type of poly (methyl vinyl ether- alt -maleic anhydride) (PMVE-MA) based composite nanofiltration membrane with promising anti-fouling performance. The membranes were synthesized by co -depositing mixed solutions of PMVE-MA and amino silane coupling agents on porous polyethersulfone (PES) supports, followed by thermal annealing. The selective layer was formed on the PES support through nucleophilic addition of amines to anhydrides, coupling with silane hydrolysis-condensation under acid catalysis. The performance of the membranes was adjusted by controlling the concentration of PMVE-MA, the concentration of sulfuric acid, and the mass ratio of PMVE-MA to amino silane coupling agents. Under an optimal condition, a tight (PMVE-MA)-APTES/PES membrane with water permeance of 7.9 L m −2 h −1 bar −1 and a MWCO of 330 Da was obtained. The rejection of Na 2 SO 4 of the membrane reached 92 %. The anti-fouling test under filtration of bovine serum protein (BSA) showed the membrane had a high-water flux recovery rate of 99.3 %, indicating an excellent antifouling performance. This work highlights the potential of using PMVE-MA as a material for antifouling nanofiltration membrane design.
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RSC Advances
·
2014
·Vol. 5
·期 2
·1564-1570
·
IF 3.708
Wei Wei,Ting Wang,Chenglin Yi,Jingcheng Liu,Xiaoya Liu
Branched copolymer self-assembled micelles, based on amphiphilic branched poly(styrene-alt-maleic anhydride) (BPSMA) synthesized by a one-pot method, are prepared and employed as particulate emulsifiers to stabilize the white oil-in-water Pickering emulsions. The influences of micelle concentration, branching degree, salinity, and oil type on the emulsifying performance of self-assembled micelles are comprehensively investigated, and the distinction between BPSMA micelles and linear poly(styrene-alt-maleic anhydride) (LPSMA) self-assembled micelles on the micellar structure and emulsifying performance is also studied. The results show that the branched structure of the copolymer plays an important role in emulsification. The emulsifying performance of BPSMA micelles is superior to that of LPSMA micelles, reflected in the emulsifying efficiency and the long-term stability of emulsions. It is attributed to the much better structural stability of BPSMA micelles compared to LPSMA micelles, which is probably due to the postponing of hydrolyzing of maleic anhydride and ionization of carboxyl to some extent caused by the introduction of the branched structure in copolymers. It is also worth noting that, salinity has a great effect on the emulsifying performance of LPSMA micelles, but little impact on that of BPSMA micelles. Additionally, BPSMA micelles can also well stabilize the oil-in-water emulsions with some other types of natural oils. Thus the findings are not only of theoretical interest but also of great practical application in the cosmetics area.
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POLYMER ENGINEERING AND SCIENCE
·
2021
·Vol. 61
·期 10
·2567-2575
·
IF 2.428
Peipei Kong,Xianhua Chen,Gang Xu,Wei Wei
The objective of the article was to enhance the recycling value of solid waste rubber by surface functionalization of desulfurized rubber powder using a one-pot method based on free-radical polymerization theory. Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, thermogravimetric analysis, scanning electron microscopy, and elemental analysis were used to characterize the maleic anhydride-grafted desulfurized rubber powder, and the grafting mechanism was also investigated. Fourier transform infrared spectroscopy and X-ray photoelectron spectroscopy confirmed that maleic anhydride was grafted onto the desulfurized rubber powder. Thermogravimetric analysis indicated that the maleic anhydride-grafted desulfurized rubber powder and desulfurized rubber powder possessed different thermal properties and structure. The results of scanning electron microscopy and elemental analysis illustrated that the surface of the desulfurized rubber powder was covered with a layer of fold-like maleic anhydride polymer. The mechanism of grafting desulfurized rubber powder with maleic anhydride may be achieved by replacing the active α-H on the methylene group of the desulfurized rubber macromolecule chain.
研究领域:
材料科学
·
环境工程
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LANGMUIR
·
2023
·
IF 3.9
Bingzheng Jiang,Dong Chen,Changwen Zhao,Yuhong Ma,Li Wang,Wantai Yang
In the present study, the copolymer of mixed olefins included in unetherified gasoline and maleic anhydride (PUGM) was prepared by self-stabilized precipitation polymerization (2SP) and employed for the synthesis of a new family of stable polyelectrolyte complexes (PECs). Polyanionic saponified PUGM partially grafted with methoxy poly(ethylene glycol) (PUGMS-g-mPEG) and polycationic quaternized PUGM (PUGMQ) were both derived from PUGM via the facile modification of anhydride groups. The particle size, zeta potential, morphology, and stability of self-assembled PEC particles were investigated thoroughly. Strikingly, the introduction of long mPEG side chains (Mn = 4000) had a remarkable effect on the self-assembled particles, which displayed a constant particle size of ∼200 nm regardless of varying n+/n–. Moreover, it also enhanced the salt tolerance and long-term stability of PEC particles significantly. Our work not only provides an effective approach to PECs from petroleum resources with low cost but also deepens the understanding of the relationship between the chain structure of polyelectrolytes and the stability of PECs.
研究领域:
高分子科学
·
材料科学
·
化学工程
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PubMed
高影响因子
CATALYSIS COMMUNICATIONS
·
2014
·
IF 3.32
Yao Ma,Yangqiang Huang,Youwei Cheng,Lijun Wang,Xi Li
Ru-based catalysts, supported on activated carbon and carbon nanotubes, were synthesized by a simple and eco-friendly bioreduction method and tested in the liquid-phase hydrogenation of maleic anhydride. Over 2.0% Ru/AC, succinic anhydride was produced with a maximum yield of 99.2% without further hydrogenation to γ-butyrolactone. Well-defined spherical shapes with uniform small size of Ru nanoparticles and the residual plant biomass were responsible for the excellent catalytic activities and stabilities.
研究领域:
催化化学
·
纳米材料科学
·
绿色化学
·
有机合成
·
环境友好催化
·
生物质转化
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高影响因子
AICHE JOURNAL
·
2026
·
IF 4.4
Shenhui Yu,Xingfen Huang,Xingyue Shi,Nemin Yang,Bangban Zhu,Haitao Wang,Jieyuan Zheng,Shengbin Shi,Deliang Wang,Qingyue Wang,Khak Ho Lim,Xuan Yang,Pingwei Liu,Wen-Jun Wang
Mechanistic understanding of polymerization kinetics at elevated pressure requires quantitative, time-resolved access to reaction dynamics. Herein, we developed an integrated framework coupling in situ high-pressure ATR-IR spectroscopy with a kinetic model based on the method of moments. Using ethylene/maleic anhydride (E (1)/MAH (2)) copolymerization as a benchmark, this platform enabled real-time quantification of monomer consumption and in situ determination of copolymer composition, directly confirming strict alternating incorporation. The kinetic model showed excellent agreement with experiments, with deviations below 10%. Analysis revealed the cross-propagation of MAH to ethylene-terminated radicals ( k 12 ≈ 5.62 × 10 3 L mol −1 s −1 ) is over an order of magnitude faster than the reciprocal step ( k 21 ≈ 3.92 × 10 2 L mol −1 s −1 ), identifying the latter as rate-determining. Extrapolation of the model guided the precise synthesis of a high-molecular-weight copolymer ( M w = 107 kDa). This work establishes a generalizable in situ platform for elucidating kinetics in complex polymerization systems at elevated pressure.
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POLYMER
·
2026
·
IF 5.1
Canzhang Wang,Liang Xu,Junfeng Qian,Qun Chen,Jing Zhang
High-performance epoxy resins (EPs) are indispensable matrices for advanced load-bearing composites, such as wind turbine blades and automotive lightweight structures. Achieving concurrent improvements in the mechanical and thermal performance of EP remains challenging for conventional toughening approaches. In this study, divinylbenzene (DVB)-crosslinked poly(styrene-co-maleic anhydride) (SMA) microspheres were synthesized via self-stabilized precipitation polymerization (2SP) and subsequently incorporated into the EP matrix. The microspheres combine reactive surface anhydride groups with a rigid aromatic backbone. The anhydride groups can participate in the epoxy–anhydride curing reaction, thereby improving the interfacial compatibility between the microspheres and the EP matrix. Meanwhile, the rigid benzene rings restrict segmental mobility and increase the rigidity of the crosslinked network. Curing kinetic analysis revealed that the incorporation of SMA microspheres reduced the apparent activation energy of the SMA/EP system, suggesting that the curing reaction was facilitated. This reduction may be attributed to the participation of surface anhydride groups in the cross-linking reaction and hydroxyl-mediated autocatalytic effects. Mechanical evaluations showed that, at an SMA loading of 2 wt%, the tensile strength of the SMA/EP composite reached 72.0 MPa, corresponding to a 48.8% increase compared with neat EP. At a loading of 3 wt%, the impact strength reached a maximum value of 19.2 kJ/m 2 , indicating a substantial improvement in toughness. In addition, dynamic mechanical analysis (DMA) indicated that SMA microspheres increased the crosslinking density, while differential scanning calorimetry (DSC) showed that the glass transition temperature (T g ) increased by approximately 9 °C compared with neat EP. These results highlight reactive SMA microspheres as promising modifiers for epoxy composites requiring balanced strength, toughness, and thermal performance.
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