CARBOHYDRATE POLYMERS
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2024
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IF 10.7
Haonan Zhang,Bin Yu,Yun Fang,Zhengang Xie,Qiuyu Xiong,Donglai Zhang,Jingli Cheng,Qunzhen Guo,Yehua Su,Jinhao Zhao
The requirement to improve the efficiency of pesticide utilization has led to the development of sustainable and smart stimuli-responsive pesticide delivery systems. Herein, a novel avermectin nano/micro spheres (AVM@HPMC-Oxalate) with sensitive stimuli-response function target to the Lepidoptera pests midgut microenvironment (pH 8.0–9.5) was constructed using hydroxypropyl methylcellulose (HPMC) as the cost-effective and biodegradable material. The avermectin (AVM) loaded nano/micro sphere was achieved with high AVM loading capacity (up to 66.8 %). The simulated release experiment proved the rapid stimuli-responsive and pesticides release function in weak alkaline (pH 9) or cellulase environment, and the release kinetics were explained through release models and SEM characterization. Besides, the nano/micro sphere size made AVM@HPMC-Oxalate has higher foliar retention rate (1.6–2.1-fold higher than commercial formulation) which is beneficial for improving the utilization of pesticides. The in vivo bioassay proved that AVM@HPMC-Oxalate could achieve the long-term control of Plutella xylostella by extending UV shielding performance (9 fold higher than commercial formulation). After 3 h of irradiation, the mortality rate of P. xylostella treated by AVM@HPMC-Oxalate still up to 56.7 % ± 5.8 %. Moreover, AVM@HPMC-Oxalate was less toxic to non-target organisms, and the acute toxicity to zebrafish was reduced by 2-fold compared with AVM technical.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Mengmeng Zhang,Zhihui Sui,Lijian Sun,Qi Zhang,Lihua Deng,Longyu He,Bingchi Zhang,Bin Zu
Multifunctional cellulose-based textiles with high strength, anti-UV, antibacterial and hydrophobic properties are desirable in diversified applications. However, it is still a challenge to manufacture such multifunctional cellulose-based textiles. In this study, a multifunctional waterborne polyurethane (WPU) coating decorated with nano-ZnO and perfluorooctanol (F13) was prepared, and then applied to hemp cellulose fabric finishing. In order to disperse and incorporate nano-ZnO into WPU matrix, nano-ZnO was first modified with γ-aminopropyltriethoxysilane (KH-550). Subsequently, KH-550 modified nano-ZnO and F13 were simultaneously introduced into the WPU skeleton. The structural characteristics of nano-ZnO and F13-decorated WPU (ZnO/FWPU) were studied. Influences of nano-ZnO content on the hydrophobic, antibacterial, and UV resistant of ZnO/FWPU treated hemp cellulose fabric were systematically investigated. The results show that the water contact angle (WCA) of the coated fabric increased from 0° to 135.6°, and it has good-staining ability. Encouragingly, the ZnO/FWPU coating is universal and can improve the hydrophobicity of materials including cotton fabric, polyester cotton, paper, hardboard, and balsa wood, with WCA ranging from 119.05° to 133.84°. Meanwhile, the coated fabric are effective against S. aureus and E. coli , and antibacterial rate was 99.5 % and 99.7 %, respectively. Moreover, the fabric has an excellent anti-UV properties with UPF 50+. The mechanical strength of the fabric is significantly improved, and the breaking strength is increased by 27 % (warp) and 29 % (weft). After repeated washing, the fabric still maintains high mechanical, antibacterial, and hydrophobic properties. This study offers a new opportunity for integrating multiple functions onto a hemp cellulose fabric for multitask requirements.
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Materials Today Chemistry
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2024
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IF 6.7
Fangfang Kong,Xiaozhen Ma,Xiaobo Xu,Minghui Cui,Honglong Zhao,Jin Zhu,Jing Chen
Thermoset polymer materials are widely used in various fields due to their excellent performance brought by their permanently cross-linked structures. However, their inability to be recycled also leads to a serious waste of resources. The emergence of covalent adaptable networks (CANs) has solved the problem perfectly that thermoset materials are difficult to recycle. Meanwhile, with the increasing concern for resources and the environment, bio-based materials have sparked a research boom. Itaconic acid is a biomass feedstock with great prospects for development. In this study, itaconic acid, 1,6-hexanediol, 6-mercapto-1-hexanol, isocyanate, and 4,4′-dithiodiphenylamine were used as raw materials. Itaconic acid-based polyols were first synthesized by thiol-ene click reaction, and a series of itaconic acid-based polyurethane (PU) materials containing dynamic covalent networks were synthesized by varying the ratios between the amino and hydroxyl groups. The obtained material has good mechanical properties with a maximum tensile strength of 31.5 MPa and a modulus of 717 MPa. The presence of disulfide bonds allows the material to be recycled by remodeling, and the recovery efficiency of tensile strength after three remodeling cycles is 85.1 %. The material also has excellent solvent resistance and UV-blocking resistance. In conclusion, this work provides possible ideas for the high-value utilization of itaconic acid in polyurethanes.
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Nano Today
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2024
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IF 13.2
Ya Ma,Javier Remón,Lingjuan Luo,Wei Ding,Zhicheng Jiang,Bi Shi
This work explores the development of a renewable, carbon-neutral, light-colored UV-shielding film to protect photosensitive pesticides from solar radiation, as these chemicals are easily degraded under UV light, substantially reducing their efficiency and causing soil and water pollution. The abundant benzene rings in lignin and phenolic hydroxyls in tannin boosted the co-self-assembly of lignin and tannin into composite nanospheres by the simultaneous π-π stacking and H-bonding interactions between these two biopolymers. These lignin-tannin (LT) composite nanoparticles were used as natural UV-shielding additives to coat a poly-vinyl-alcohol (PVA) film, endowing the PVA-LT film with an excellent UV-shielding ability (>95 % efficiency) due to the strong π-π stacking and concentrated phenolic hydroxyls. Typical photosensitive pesticides covered with the PVA-LT film significantly increased their remaining rate by 1.5 times compared to those under the uncoated film. Besides, intensive intermolecular hydrogen bonds were generated between PVA and the abundant phenolic hydroxyl groups exposed on the hydrophilic shell of the LT coating, enhancing the mechanical properties and water vapor retention of the composite film. Our biodegradable composite film derived from natural plant extracts not only protected photosensitive pesticides from UV irradiation but also allowed the transmission of visible light to guarantee the photosynthesis process of crops.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2025
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IF 8.5
Zhiping Wang
Carboxymethyl cellulose (CMC) holds great potential for food preservation applications, provided its mechanical properties and UV-blocking performance are significantly enhanced. Considering this, the study focuses on developing a novel dual-layered film using the layer-by-layer casting method. The resulting film exhibits a compact dual-layered structure, with a nacre-like upper layer (chitosan/montmorillonite/tea polyphenols) and a dense bottom layer (CMC/sodium alginate/nano-hydroxyapatite/tea polyphenols). This design enhances tensile strength through hydrogen bonding interactions among nanoparticles, active substances, and polymers, while the nacre-like and layered structures contribute to improve elongation. Furthermore, the incorporation of tea polyphenols significantly enhances the UV-blocking performance of the film. Compared to the single-layer film, the dual-layered film exhibits improved tensile strength (from 45.19 MPa to 63.58 MPa), elongation (from 52.56 % to 82.45 %), and UV-blocking capability (from 99 % to 100 %). Additionally, the dual-layered film presents excellent water resistance (moisture content: 13.64 %, water solubility: 6.26 %), oxygen permeability (1.841 × 10 −3 g/m 2 s) and antioxidant activity (scavenging capability for DPPH: 67.25 %). When employed as packaging film, the dual-layered film effectively reduces tomatoes weight loss from 9.04 % to 7.52 % and extends shelf life. This study offers an innovative approach to promote the development of CMC for food preservation applications.
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CARBOHYDRATE POLYMERS
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2017
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IF 4.811
Chanchal Kumar Kundu,Xin Wang,Yanbei Hou,Yuan Hu
Phosphorylated chitosan (PCS) was synthesized and grafted onto the surface of polyamide 6.6 (PA 6.6) fabrics via UV-induced grafting polymerization in order to improve the flame retardant properties. Subsequently, PCS grafted PA 6.6 fabrics were modified by (3-aminopropyl) triethoxysilane (APTES) through sol-gel process in order to form a cross-linking coating. The results obtained from the vertical burning test indicated that only the PCS grafted and simultaneously sol-gel treated fabrics could stop the melt dripping. A maximum reduction (30%) in the peak heat release rate was achieved for the PA6.6-PCS-4W-SG fabric sample. The optimal flame retardant effect was achieved for the PA6.6 fabrics treated by PCS and APTES simultaneously, which was attributed to the joint effect of thermal shielding exerted by the silica and char-forming effect derived from PCS.
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Food Chemistry-X
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2024
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IF 6.5
Min Yang,Liang Tao,Zi-Lin Wang,Ling-Fei Li,Cun-Chao Zhao,Chong-Ying Shi,Jun Sheng,Yang Tian
Moringa oleifera Lam. leaves are a new raw food material rich in polysaccharides. These polysaccharides exhibit various biological properties, including antioxidant, hypoglycemic and immunoregulatory effects. However, the use of Moringa oleifera Lam. leaves polysaccharides (MOLP) may be limited by their large molecular weight ( M W ) and presence of numerous impurities, such as pigments. Research has indicated that degraded polysaccharides usually exhibit high biological activity because of changes in physical structure and chemical properties. In this study, we focused on the extraction of a degraded-modified fraction from MOLP using the Ultraviolet/ Hydrogen peroxide (UV/H 2 O 2 ) method. Specifically, the physicochemical properties and glycosidic bond composition of a particular fraction (UV/H 2 O 2 degraded Moringa oleifera Lam. leaves polysaccharides in 3 h called DMOLP-3) were investigated. In addition, in vitro simulated digestion experiments showed that DMOLP-3 was only partially degraded during gastrointestinal digestion, indicating that DMOLP-3 can be utilised by gut microorganisms. Furthermore, the prebiotic properties of MOLP and DMOLP-3 was studied using an in vitro faecal fermentation model. The results indicated that compared with MOLP, DMOLP-3 led to a decrease in both the colour and M W of the polysaccharides. In addition, this model exhibited enhanced solubility and antioxidant capabilities while also influencing the surface morphology. Moreover, DMOLP-3 can facilitate the proliferation of advantageous microorganisms and enhance the synthesis of short-chain fatty acids (SCFAs). These results provide valuable insights into the utilization of bioactive components in Moringa oleifera Lam. leaves for the intestinal health.
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JOURNAL OF APPLIED POLYMER SCIENCE
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2025
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IF 2.8
Xinyong Su,Jinwei Wang,Can Tang,Jiaao Wang
Ultraviolet (UV)-curable maleic anhydride liquid polybutadiene films were prepared by using pentaerythritol tetra(3-mercaptopropionate) (PETMP) as the crosslinker in 10 s. Fourier transform infrared (FTIR) spectra showed that maleic anhydride ring opened rapidly and reacted with sulfhydryl group to form thioester; meanwhile, SH group reacted with a double bond by thiol-ene reaction, and both reactions resulted in the rapid increase in gel contents. Due to the unique flexible nature of maleic anhydride polybutadiene (MLPB) and the moderate cross-linking degree provided by PETMP, the addition of PETMP in the range of 20%–25% significantly enhances their overall mechanical properties. The tensile strength of free-standing MLPB-PETMP films increased by three times, while its elongation reduced by less than 20%; their adhesion to carbon steel increased by more than three times to 5.0 MPa. Additionally, these films could be folded 180° on aluminum foil without damage and maintained a much lower wear level even after 3000 cycles of abrasion. However, the excessive addition of PETMP caused uneven distribution and aggregation, resulting in internal defects and thus the reduction in mechanical performances. Moreover, their thermal stability in air was also found improved, attributing to the increase in cross-linking degree and the formation of higher strength S C bond.
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POLYMER ENGINEERING AND SCIENCE
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2025
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IF 3.2
Binzhi Wang,Yuewen Huang,Bin Wang,Ruixiang Zhou,Feng Wang,Hui Liu
In this study, an N, N-dimethyl-p-toluidine/benzoyl peroxide redox initiation system was used to synthesize a series of silicone-modified UV-curable acrylic pressure-sensitive adhesives (PSAs) via bulk polymerization. The oxidizing and reducing agents were added separately but simultaneously into a mixture of monomers. The impact of varying monomer content on the PSA's properties, as well as the influence of organosilicon incorporation on water and aging resistance, was evaluated through 180° peel strength and initial adhesion tests. The results demonstrated that the PSA without organosilicon modification exhibited a maximum peel strength of 7.21 N/25 mm and an initial adhesion of 8.41 N/25 mm. Although the introduction of the organosilicon structure reduced both peel strength and initial adhesion, it notably improved the PSA's water resistance and aging resistance. Highlights Synthesis without solvent using redox initiator system. UV-cured system to enhance molecular weight and adhesion. Introduction of silane structure to improve water and aging resistance. Adhesion performance testing on different substrates (PET and BOPP).
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Journal of Materials Chemistry C
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2024
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IF 5.7
Ying Li,Zhongquan Yu,Jialuo Zhang,Enke Feng,Xiaoqin Li,Linan Cao,Zhiming Yang,Zhiqiang Wu
In recent years, hydrogel-based wearable smart electronic devices have attracted much interest. However, it still remains crucial to integrate multiple functions into a single hydrogel in order to further develop such devices. Herein, a highly stretchable and mechanically toughened metal–organic framework (MOF)-based single network organohydrogel with superior low-temperature adaptability and UV-blocking capability is developed by using UiO-66-NH2 as the reinforced nanofiller in polyacrylic acid networks containing a glycerol/water binary solvent system. UiO-66-NH2 nanoparticles significantly enhanced the mechanical properties of the as-prepared organohydrogel by forming hydrogen bonds with copolymer chains, and its tensile strength is 2.9 times that of a pure organohydrogel. The incorporation of glycerol serving as an anti-freezing agent effectively impedes the formation of ice crystals, thereby endowing the MOF-based organohydrogel with extraordinary low-temperature tolerant ability as low as −40 °C. Meanwhile, this organohydrogel exhibits excellent strain sensitivity (GF = 2.4), fast strain response (577 ms) and wide strain detection range (0–800%), and can be assembled as a reliable flexible strain sensor to precisely monitor different physical deformations and complex human movements. Impressively, combined with the international universal Morse code, the developed MOF-based organohydrogel sensor also exhibits an attractive feature that can serve as a freezing-tolerant communication device for encrypting and transmitting various messages (e.g., “Safe”, “Dangerous” and “I will arrive on time”) even under extremely cold environments. This work demonstrates the significant potential of metal–organic framework reinforced low-temperature tolerant organohydrogels in flexible electronic devices.
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OPTICAL MATERIALS
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2025
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IF 4.2
Liang Dong,Ziying Wang,Sihan Yang,Qi Zhu,Ji-Guang Li,Xuejiao Wang
Phosphor-converted white light-emitting diode (pc-WLED) is crucial for solid-state lighting, but the color rendering index of commercial pc-WLED needs to be improved. In this study, a series of silicates KSrScSi 2 O 7 : x Ce 3+ ( x= 0-10at%) were synthesized. Under the 365 nm near-ultraviolet excitation, the silicate emits a high-quality broadband cyan-blue light (385-550 nm) covering the cyan gap. The emission intensity reaches its maximum at approximately 450 nm and the emission peak is slightly shifted with varying Ce 3+ concentration, which is because Ce 3+ doping changes the crystal field around the luminescence center. The prepared phosphors showed promising properties for application in high-color rendering lighting. The crystal structure analysis via X-ray diffraction and Rietveld refinement and Gaussian fitting of the PL spectra indicated that Ce 3+ occupies the Sr 2+ and K + positions in the monoclinic host lattice. The optimal Ce 3+ content is 3at% and concentration quenching is attributed to the non-radiative energy transfer between the nearest-neighboring Ce 3+ ions. The temperature-dependent luminescence showed that the T 50 is 394 K for the KSrScSi 2 O 7 : x Ce 3+ materials. The thermal quenching is attributed to increased lattice vibrations and enhanced non-radiative transitions at elevated temperatures. The performance of the pc-WLED device fabricated with KSrScSi 2 O 7 : 3at%Ce 3+ was studied, and the device showed a high-color rendering index (Ra=93.8) and exceptional stability during operation.
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INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2024
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IF 7.7
Zhenjie Wang,Yuwei Guo,Xiyu Song,Chuliang Shen,Yijun Jiang,Ruyi Xie
In order to solve the problems of high energy consumption, high raw material consumption and poor air permeability of fabrics in the dip-baking method, a simple low-liquid inkjet printing method was used to prepare superhydrophobic cotton fabrics. Inkjet printing technology enables precise control over the printing position and droplet amount, allowing for the creation of superhydrophobic patterns on the fabric surface. ZIF-8 precursor solution and long alkyl chain siloxane were formulated as suitable inks and printed on the surface of the fabric, forming a rough interface with low surface energy. The surface micromorphology and chemical structure of the fabric samples were characterized in detail. The prepared ZIF-HDTMS-cotton fabric exhibited superhydrophobic property with a high water contact angle of 158° and self-cleaning property against liquid and solid contaminants. Importantly, after undergoing a variety of harsh damage tests, the modified fabric still exhibited good superhydrophobicity, indicating its favorable chemical stability and mechanical durability. Compared to raw cotton fabric, the treated fabric exhibited an air permeability rate of 311.6 L/m 2 /s, proving its excellent breathability. Due to the high absorption capacity of ZIF-8 to ultraviolet rays, the prepared cotton fabric has obtained a certain ultraviolet protection effect. In addition, through infrared camera observation, it is found that the ZIF-HDTMS-cotton fabric also has a good anti-permeation effect on hot water, which can play a role in preventing scalding. These findings pave the way for the development of patterned multifunctional textiles through precise inkjet printing technology.
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危险品化学品经营许可证（带存储）