POLYMER DEGRADATION AND STABILITY
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2024
·
IF 6.3
Jinke Yu,Ling Sun,Lan Ding,Yufei Cao,Xiaohui Liu,Yuanlin Ren,Yuesheng Li
When confronted with a fire, the flammability of rigid polyurethane foam (RPUF) makes it extremely easy to burn violently. In this work, a green biomass derived flame retardant coating was synthesized with phytic acid as acid source, D-sorbitol as carbon source and glycine as gas source. A simple UV curing technique was used to improve the flame retardancy of RPUF . Coated RPUF exhibited a limiting oxygen index value of up to 39.7 % and successfully met UL-94 testing criteria with V-0 rating. In comparison to control RPUF, coated RPUF showed an extended ignition time of 3 s, a remarkable reduction of approximately 60 % in the peak heat release rate, and possessed commendable smoke suppression property. The flame retardant mechanism was analyzed, unveiling the emergence of compact char residue on the surface of coated RPUF after burning, accompanied by the liberation of non-combustible gases. Therefore, these results demonstrated that cost-effective UV-curable flame retardant coating forms protective char layer on the surface of RPUF, providing efficient flame retardancy while preserving its excellent properties.
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2025
·
IF 6.2
Yuwei Liu,Min Yang,Jiuao Wang,Hao Yue,Zongliang Du,Xu Cheng,Haibo Wang,Fei Cheng,Xiaosheng Du
Blending thermoplastic starch (TPS) with poly (lactic acid) (PLA) and poly (butylene adipate- co -terephthalate) (PBAT) is considered as one of the most promising ways to produce fully biodegradable and renewable biopolymers. However, these composite biopolymers face challenges such as, poor mechanical performance, inferior water vapor and ultraviolet barrier resistance, and weak antibacterial property due to the incompatibility of hydrophilic TPS with hydrophobic PLA and PBAT. In this work, Ag nanoparticles were uniformly in-situ grown on cellulose nanocrystal to prepare a novel silver nanoparticles loaded-cellulose nanocrystal (Ag-CNC). Then, antimicrobial TPS/PLA/PBAT composite films with enhanced mechanical properties, superior water vapor barrier capacity and highly UV-shielding effect were fabricated by introducing Ag-CNC and oligo (lactic acid) grafting starch (OLA- g -ST, an eco-friendly compatibilizer) into TPS, PLA and PBAT matrix. As expected, the introduction of Ag-CNC significantly improved antibacterial property and UV-shielding effect (283 % increased) of TPS/PLA/PBAT composite films. Moreover, the incorporation of OLA- g -ST and Ag-CNC into the composites resulted in a notable enhancement of the mechanical properties (tensile strength and elongation at break increased by 77.95 % and 63.23 %, respectively) and water vapor barrier capacity (40.8 % increased) of TPS/PLA/PBAT composite films. Hence, the innovative fully biodegradable composite films displayed remarkable potential in the field of renewable biopolymers as well as multifunctional packages.
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高影响因子
JOURNAL OF COLLOID AND INTERFACE SCIENCE
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2012
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IF 3.07
Yan-Jing Gu,Bing Yan
A series of new visible and near-infrared (NIR) luminescent lanthanide-hydroxybenz[de]anthracen derivatives (Ln(HBAN) 3 (H 2 O) 2 (NO 3 ) 3 , Ln(HBAN) 3 phen(NO 3 ) 3 ) were synthesized (HBAN-6-hydroxybenz[de]anthracen-7-one, Ln = Eu, Yb, Nd). Further, chemically bonded lanthanide hybrids of functionalized mesoporous silica (SBA-15) are prepared using HBAN-functionalized alkoxysilane (HBAN-Si) as linker, which is named as Ln(HBAN-SBA-15) 3 (NO 3 ) 3 , Ln(HBAN-SBA-15) 3 phen(NO 3 ) 3 (Ln = Eu, Yb, Nd), respectively. The physical characterization and especially the photoluminescence properties for these hybrids are performed. SAXRD and BET of them revealed that all of these hybrid materials have uniformity in the mesostructure. Worth noting here is that the excitation spectra of these hybrid materials are extended to visible light region (439–535 nm). Upon ligand-mediated excitation with the ultraviolet and visible light, the visible luminescence for europium hybrids and NIR luminescence for Yb 3+ and Nd 3+ hybrids are obtained.
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PubMed
高影响因子
POLYMERS FOR ADVANCED TECHNOLOGIES
·
2024
·Vol. 35
·期 12
·e70013
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IF 3.1
Zenghui Tan,Xuehui Tan,Yajun Xu,Wei Wei,Xiaojie Li,Jingcheng Liu
In this work, polyurethane acrylate (PUA) was successfully synthesized using polypropylene carbonate diol (PPC2000), isophorone diisocyanate (IPDI), and hydroxyethyl acrylate (HEA) as raw materials. Then, a series of UV-curable elastic soft-feel coatings based on different photo-initiators were successfully prepared. The double-bond conversion rate, thermal stability, storage modulus, roughness, contact angle, and other properties of the coatings were tested. The results indicated that the UV-curable elastic soft-feel coatings achieved a high double-bond conversion rate and demonstrated good adhesion, chemical resistance, wear resistance, and thermal stability. Moreover, it was found that the coatings with low storage modulus, low roughness, and low surface energy displayed excellent tactile feel.
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高影响因子
PROGRESS IN ORGANIC COATINGS
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2024
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IF 6.5
Bin Liang,Yue Sun,Ziheng Bai,Haoze Li,Yan Shi,Dan Lin,Luchao Pei,Yanji Zhu,Huaiyuan Wang
Scale deposition and metal corrosion, especially in the petroleum industry , have always been serious issues that seriously affect economic efficiency and safety. However, conventional anti-scaling strategies including mechanical descaling and chemical detergents are energy-consuming and environmentally damaging, which can't achieve efficient and long-term protection. Based on mechanical descaling and chemical detergents, and anti-corrosion strategies based on filler are inadequate to realize efficient protection. Herein, this work reports a novel UV-curable polymer coating with long-term anti-scaling and anti-corrosion properties. The excellent anti-scaling capability was achieved by inhibiting interfacial nucleation and reducing interfacial adhesion work of scaling products. Significantly, the anti-scaling capability of the designed coating mainly originates from two aspects: inhibiting interfacial nucleation and reducing interfacial adhesion work of scaling. Compared with pure polyurethane acrylic coating (0 % FGSS), the 20 % FGSS coating shows significantly improved scaling repellence even after a 240 h dynamic scaling test while maintaining a fairly low theoretical adhesion work (≈0.1 mN/m). This outstanding anti-corrosion capability of the FGSS coating mainly originates from two aspects: the physical barrier effect of the air layer and low surface energy resistance barriers with dynamic FGSS brushes. The physical barrier effect of the air layer and the low surface energy resistance barriers also lead to outstanding anti-corrosion property (with the |Z| 0.01 Hz value maintained at 10 8 Ω·cm 2 ). This study presents a simple and effective design and fabricated strategy, paving a new pathway for developing UV-cured coatings with unique anti-corrosion and anti-scaling properties. This facile and effective UV-curable polymer coating shows great potential in metal protection and paves a new pathway for the development of long-term functional protection coatings.
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高影响因子
Environmental Science-Water Research & Technology
·
2024
·Vol. 10
·期 3
·718-728
·
IF 3.5
Chen-Yan Hu,Ling Xu,Yi-Li Lin,Cong Li
Iodinated X-ray contrast media (ICM) are widely used in medical imaging due to their stable properties, but they cannot be effectively removed in wastewater treatment plants (especially hospital wastewater). Therefore, ICM have been widely detected in aquatic environments and may gradually accumulate and cause adverse effects to the creatures. In this paper, the degradation characteristics of two most commonly detected ICM, iohexol and diatrizoate, by ultraviolet/persulfate (UV/PS) were investigated. UV/PS can effectively degrade both ICM, with pseudo-first-order rate constants (kobs) of 0.3641 min−1 for iohexol and 0.3511 min−1 for diatrizoate, and SO4·− played a major role in UV/PS degradation of both ICM. The presence of I−, Cl−, Br−, humic acid (HA), and alkaline conditions inhibited the degradation efficiency of both ICM. Less I-DBPs were formed from iohexol at low PS and high Br− concentrations, but from diatrizoate at high PS and Br− concentrations. The degradation pathways of iohexol and diatrizoate in the UV/PS process were proposed separately according to the detected degradation intermediates. This study can provide an essential theoretical basis for the UV/PS degradation of the two ICM.
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高影响因子
JOURNAL OF RARE EARTHS
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2025
·
IF 7.2
Yinzhong Liu,Xuechun Yang,Yun Guo,Lingchao Wang,Xiaoshun Wei,Qingjie Wang,Yiyu Qiao,Xiaotao Zhu,Lingli Cheng,Zheng Jiao
n -Butanol, a volatile organic compound with relatively low toxicity, requires precise detection for public health and environmental safety. In this research, metal-organic framework (MOF)-ZnO nanostructures (zinc oxide nano-materials with the utilization of metal-organic frameworks as precursors) doped with rare earth elements (Ce, Eu, and Er) were synthesized via a homogeneous co-precipitation route. The produced samples were comprehensively characterized employing X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), Brunauer-Emmett-Teller (BET) method, X-ray photoelectron spectroscopy (XPS), and UV-vis spectroscopy to evaluate the morphological, structural, and optical characteristics. The gas-sensing capabilities of the RE (Ce, Eu, Er)-ZnO series of sensors were subsequently assessed in comparison to those of pristine MOF-ZnO by adjusting the doping type and ratio of rare earth elements to optimize the sensor performance. Among the materials tested, the 0.08 wt% Eu-ZnO sensor exhibits the best-of-breed sensitivity and selectivity, achieving the impressive response value of 616.11 and the detection limit of 361.52 ppb working at 230 °C under 100 ppm of n- butanol exposure, this achievement attains 8.7 times greater than that of pristine MOF-ZnO (70.72). Moreover, with the aid of ultraviolet excitation, the performance of the 0.08 wt% Eu-ZnO sensor is further enhanced, with the sensitivity response elevating to 1000.65 and 4.3 times greater than that of pristine MOF-ZnO (231), leading to the lower detection limit of 259.70 ppb at 220 °C. These findings underscore the significant potential of rare earth incorporation and UV irradiation playing as the synergistic strategy to augment the gas-sensing capabilities, preeminently in the detection of low-concentration volatile organic compounds.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
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2025
·
IF 13.2
Ye-Ting Wang,Qing-Ping Zheng,Yu Chai,Yu-Cang Zhang,Yan-Zhen Zheng
In this study, an efficient and environmentally friendly pretreatment system was developed by combining the biocompatible ionic liquid choline levulinate (ChLA) with monoethanolamine (MEA) to enhance the fractionation and valorization of tea stems (TS). Under optimized conditions (140 °C, 2 h, 20 % water content, ChLA:MEA molar ratio of 1:2), the system achieved high retention of cellulose (89.2 ± 1.4 %) and hemicellulose (76.6 ± 1.4 %), alongside substantial lignin removal (76.9 ± 0.7 %). Spectroscopic and morphological analyses (FTIR, XRD, SEM) confirmed effective disruption of the lignin-carbohydrate complex, a reduction in cellulose crystallinity, and enhanced substrate accessibility. Consequently, enzymatic hydrolysis of the pretreated biomass yielded glucose and xylose at 93.7 ± 0.6 % and 85.7 ± 0.7 %, respectively, representing a more than 212 % improvement in saccharification efficiency compared to untreated TS. Furthermore, the pretreatment selectively cleaved lignin-carbohydrate ester linkages, enabling the recovery of lignin nanoparticles (LNPs) characterized by a high β-O-4 linkage content, low condensation degree, and low molecular weight. These LNPs were incorporated into polyvinyl alcohol (PVA)-based nanocomposite films, which exhibited improved mechanical properties, hydrophobicity, and UV-shielding performance. Overall, this work presented a sustainable and integrated strategy for the comprehensive utilization of lignocellulosic biomass into high-value multifunctional materials.
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高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2025
·
IF 13.2
Lei Wang,Zheng Zhang,Yu Fang,Rui Zhao,Shouhe Pan,Meng Yu,Yinjie Ma,Yinmin Wang,Xiquan Ding,Xinyu Guo,Fengyu Li,Pengkun Yan,Xuemin Wu,Yong Xu
Current advancements in pesticide research and development emphasize eco-friendly, intelligent, and precision-oriented approaches that enhance agricultural productivity minimize environmental impacts, and improve pest control efficacy. This study presents a tannic acid/F-127/Fe-targeted nanodelivery system (TA/F127-Fe) engineered through synergistic metal-ligand coordination and hydrogen-bonded self-assembly that enables multilevel molecular interactions for structural stability. The system is versatile as a hydrophobic drug carrier, achieving simultaneous nanocarrier synthesis and pesticide loading via hydrophobic interactions based on a facile one-pot method. The optimized formulation achieved 90.45 % encapsulation efficiency for lambda-cyhalothrin (LC), effectively shielding pesticide molecules from UV degradation. Enhanced rainfastness evaluation revealed that LC@TA/F127-Fe presented superior retention on superhydrophobic cabbage surfaces compared to conventional emulsifiable concentrate formulations. This nanodelivery system exhibited responsive release profiles under weakly acidic, weakly alkaline, and glutathione-rich conditions. Notably, LC@TA/F127-Fe demonstrated reduced environmental exposure risks and enhanced safety profiles in zebrafish models and human cell viability assessments. This study establishes an eco-friendly, stimuli-responsive, and easily fabricated self-assembled nanoplatform that represents a promising strategy for intelligent pesticide delivery while addressing ecological safety concerns in agricultural applications.
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高影响因子
ACS Applied Polymer Materials
·
2025
·
IF 4.7
Qiu Fu,Ying Qin,Jingyuan Zhang,Weimin Guo,Kuo Zhang,Tianyuan Xiao,Xinjia Zhang,Jiang Chang,Lijian Sun
The potential dangers associated with UV and high-energy blue light (HEBL) exposure to human ocular health are increasingly attracting scholarly interest due to the escalating use of electronic devices. It is still a great challenge for materials to achieve efficient filtering of UV and HEBL while maintaining low haze and high transmittance. Herein, we reported a facile and green process for fabricating biodegradable and flexible gold ion (Au3+)-coordinated cellulose-based light filters with diverse UV- and HEBL-screening capacities via adsorption of Au3+. The incorporation of Au3+ results in superior UV- and HEBL-screening performance, especially almost 100% absorption of UVA and UVB. Meanwhile, the films could block 67.9–98.8% of HEBL in the 400–450 nm region. By absorption of light, these films can efficiently filter blue light emitted by lighting systems, computer and mobile phone screens. The films maintained exceptionally high transmittance (83.2–86.9%) and low haze (2.1–2.4%). Furthermore, the films exhibited stable UV and HEBL screening under thermal treatment or UV irradiation. Quite encouragingly, the incorporation of Au3+ facilitates films in achieving desirable flame retardancy, evidenced by a significant increase in the limiting oxygen index from 19.2% to 39.2%. Compared to the unaltered film, the films containing Au3+ demonstrate a marked decrease in peak heat release rate (PHRR) and total heat released (THR), with values declining from 203.8 to 15.5 W/g and 11.7 to 3.0 KJ/g, respectively. Our discoveries grant Au3+ a role in the realm of UV to blue light blocking, thus advancing the development of ion-based optical materials for the creation of antiblue light films and devices.
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高影响因子
Journal of Materials Chemistry C
·
2024
·Vol. 13
·期 5
·2356-2366
·
IF 5.7
Xiaowen Zhao,Chuangen Xu,Jindi Wei,Haobo Wang,RuiPeng Yang,Xiaoliang Wang,Xiaojun Ye
Silicon heterojunction (SHJ) solar cells have enormous application prospects due to their high efficiency and small carbon footprint. However, during long-term use, the i-a-Si passivation layer of heterojunction (SHJ) solar cells tends to be destroyed by ultraviolet radiation, causing performance degradation. To eliminate this impact, downshifting (DS) materials of YVO4:Eu3+,Bi3+ on the glass surface absorb ultraviolet light and convert it to wavelengths with a higher spectral response of SHJ solar cells. Furthermore, adding anti-reflection (AR) layers on the DS layer's surface will help maintain high transmittance and weather resistance. YVO4:Eu3+,Bi3+ is prepared by using a wet chemical method, with no need for additional manufacturing of phosphors. The DS layer achieves uniform luminescence and expands the excitation spectrum. The average transmittance of glass coated with downshifting and anti-reflection (DSAR) is 96.80%, higher than that of glass with AR only. After high temperature and high humidity tests, the average transmittance of DSAR glass and the short-circuit current density of the module decreased by 1.44% and 0.59 mA cm−2, much lower than that of AR coating (decreased) samples, which decreased by 2.53% and 1.43 mA cm−2. After the UV test, the luminous intensity of the DSAR layer is much higher than that of the DS layer. Therefore, the DSAR layer could offer an easy industrialization approach to improve the outdoor reliability of SHJ solar cells.
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高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
2020
·
IF 4.244
Zhuangzhuang Chu,Yechang Feng,Bingqing Xie,Yu Yang,Yang Hu,Xiaohua Zhou,Teng Yuan,Zhuohong Yang
Materials with high bio-content have gradually replaced petroleum-based materials due to their sustainability, low cost, low toxicity and excellent performance in the field of UV-LED curable coatings. A novel tung oil-based methacrylate (TDMM) with low viscosity and multiple photopolymerizable methacrylates was designed and synthesized through three steps containing amidation, thiol-ene click reaction and esterification. The reaction conditions for thiol-ene click reaction were optimized by calculating double bond conversion and degree of functionalization of polyols. The chemical structures of the as-prepared TDMM were characterized by 1 H NMR and FTIR. The rheological behavior analysis indicated that TDMM exhibited lower viscosity than petrochemical-based reactive diluent pentaerythritol triacrylate (PETA). Subsequently, TDMM showed good copolymerization ability with soybean oil-based reactive monomer (AESO) under the “green + green” UV-LED curable systems with high bio-content (61–81% in theory). The TDMM/AESO systems showed higher T g but lower thermal stability, better modulus and tensile strength than the neat AESO. Besides, the UV-LED cured coatings exhibited excellent physical and chemical properties. This bio-renewable tung oil-based monomer is shown to be an effective reactive diluent and considered to have good potential in the development of the UV-LED curable coatings.
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高影响因子
危险品化学品经营许可证（带存储）