CHEMICAL PAPERS
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2016
·Vol. 70
·期 9
·1218-1227
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IF 1.326
Rui Wang,Yuna Luo,Chuan-Jie Cheng,Qing-Hua Huang,Hua-Shan Huang,Shuang-Lin Qin,Yuan-Ming Tu
Six quaternary ammonium salts were designed and synthesised with moderate to high yields in three steps, based on cardanol, a low-cost and abundant renewable resource. The new ammonium salts can act as reactive surfactants due to their having both a hydrophilic ammonium group and a hydrophobic unsaturated alkyl chain. The gemini surfactants with a linker of a linear saturated aliphatic hydrocarbon chain exhibited a relatively low CMC value(≤ 0.2 mmol L −1 ) and surface tension (≤ 27 mN m −1 ), signifying that this kind of amphiphile exhibited good surface active properties. The photo-active gemini surfactant with critical micelle concentration (CMC)of 0.05mmolL −1 was used successfully as the sole emulsifier in the emulsion polymerization of methyl methacrylate (MMA).In addition, abenzyl bromide-containing surfactant can act as both an atom transfer radical polymerization (ATRP) initiator and an emulsifier in an activator generated by the electron transfer atom transfer radical polymerization (AGET ATRP) of MMA in emulsion. The value of the number-average molecular mass of the resulting cardanol-endpoly (methyl methacrylate) (PMMA) is M n, GPC = 45.1 kDa, with polydispersity of 1.39.
研究领域:
材料化学
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绿色化学
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DOI
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
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2021
·
IF 5.645
Wenwen Guo,Xin Wang,Jiali Huang,Wei Cai,Lei Song,Yuan Hu
To overcome the flammability and brittleness of DGEBA, cardanol was selected to synthesize bio-based epoxy in this work because of its unique structure with both rigid aromatic rings and flexible long fatty chains. A novel intrinsically anti-flammable and self-toughened cardanol-derived novolac epoxy was synthesized through condensation, phosphorylation, and epoxidation processes, with a cardanol-based epoxy monomer without phosphorylation (ECF) as a contrastive sample. TGA results showed that the char yield of ECF-PO(OPh) 2 /DDM was much higher than those of DGEBA/DDM and ECF/DDM thermosets due to the catalytic charring effect of phosphate species. The DGEBA/DDM and ECF/DDM thermosets exhibited high flammability, whereas the ECF-PO(OPh) 2 /DDM possessed exceptional anti-flammability. Specifically, the cured ECF-PO(OPh) 2 /DDM possessed a high LOI value of 33.5 % and UL-94 V-0 rating; the PHRR, THR, and TSP values measured by cone calorimeter test were declined by 69.5 %, 28.6 %, and 16.4 % compared to those of the commercial DGEBA/DDM thermoset. Besides, the cured ECF-PO(OPh) 2 /DDM thermoset showed good toughness originated from the long fatty chain of cardanol. This as-synthesized phosphorylated cardanol-derived novolac epoxy possesses simultaneously fire-safe and toughening characteristics, which could be a renewable substitute for commercial DGEBA counterpart to overcome its flammability and brittleness.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
JOURNAL OF POLYMER RESEARCH
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2018
·Vol. 25
·期 5
·1-14
·
IF 1.434
Chen Jie,Liu Zengshe,Nie Xiaoan,Zhou Yonghong,Jiang Jianchun,Murray Rex E.
Two natural plasticizers derived from cardanol (CD), cardanol acetate (CA) and epoxidized cardanol acetate (ECA), were synthesized and characterized by 1 H NMR and 13 C NMR. The plasticizing effects of the obtained plasticizers on semi-rigid polyvinylchloride (PVC) formulations were also investigated. Two commercial phthalate ester plasticizers, dioctyl terephthalate (DOTP) and diisononyl phthalate (DINP), were used as controls. Mechanical and thermal properties, compatibility, thermal stability, microstructure, and workability were assessed by dynamic mechanical analysis (DMA), mechanical analysis, thermogravimetric analysis (TGA), scanning electron microscopy (SEM), and dynamic stability analysis, respectively. Results indicated that the natural plasticizer ECA had overallsuperior flexibility, compatibility, thermal stability, and workability comparable to both controls. The obtained CA and ECA have lower volatility resistance and similar extraction and exudation resistance than that of DOTP and DINP. The CA was further blended with DOTP in soft PVC films. Results of DMA, TGA and mechanicalanalysis indicated that CA can serve as a secondary plasticizer to improve the related properties of soft PVC formulations. These CD derived plasticizers show promise as an alternative to fully or partially replace petroleum-based plasticizers.
研究领域:
材料科学
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化学工程
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DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2023
·
IF 8.4
Yun Hu,Yu Bei,Caiying Bo,Fei-long Hu,Lihong Hu,Yonghong Zhou,Puyou Jia
The most widely used phthalic ester plasticizers are reproductive toxic and nonbiodegradable. Developing biodegradable plasticizers from biomass resources remains a great challenge for the enrichment and pollution of plasticizers that seriously damage the environment. In this study, a biodegradable plasticizer (CEPT, cardanol-based epoxy plasticizer containing a triazine ring) was fabricated and derived from cardanol via acid-free catalysis. Subsequently, the essential performances, including mechanical properties, thermal degradation, thermal aging properties, solvent extraction resistance, and the microstructure of polyvinyl chloride plasticized with CEPT, were investigated. The mechanism behind these performances was explored. In addition, the biodegradability of CEPT was studied in active soil and in the Tenebrio molitor digestive system. The degradation products were obtained from the two research systems and characterized via Fourier-transform infrared spectroscopy, proton nuclear magnetic resonance, electrospray ionization mass spectrometry, and gas chromatography–mass spectrometry. The results illustrated that CEPT did undergo biodegradation and produced small-molecular components. The insect degradation method of biomass plasticizers proposed an original and available strategy for prevention of the pollution problem of plasticizers.
研究领域:
材料科学
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环境科学
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生物学
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DOI
高影响因子
Materials Today Communications
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2024
·
IF 3.7
Zhe Chen,Yuxia Zhang,Yanyan Zheng,Xueqing Xiao,Qinhui Chen
Janus particles with obvious chemical compartmentalized can perform their functions independently, so they have attracted much attention in biomedical materials. Here, an anisotropic mesoporous silica Janus nanosheet (MSNS) with different functional groups were designed and prepared. In order to endow both sides of MSNS with independent fast hemostasis and effective antibacteria, MSNS was modified with cardanol (CA) and silver nitrate. The addition of CA improved the hemostatic property of MSNS significantly. In SD rat femoral artery injury model, the hemostatic time of CA2-MSNS-Ag was 38% shorter than that of MSNS attributed to the sealing of hydrophobic alkyl and the adhesion of phenolic hydroxyl groups in CA. CA2-MSNS-Ag could form a three-dimensional network with fibrin to further accelerate coagulation process. This Janus material exhibited excellent antibacterial effects (∼90%) against Gram-positive bacteria ( S.aureus ) and Gram-negative bacteria ( E.coli ) due to the presence of Ag. The cytotoxicity test showed that CA-MSNS-Ag possessed biosafety, which provided safety guarantee for clinical application in the future. This Janus dressing with different functions on two opposite sides provides synergetic multifunctional effects during the healing of wound.
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高影响因子
IRANIAN POLYMER JOURNAL
·
2025
·
IF 2.8
Zhang Xin,Jia Lingxiao,Wang Wenjing,Zhao Haichao
Graphene oxide (GO) has emerged as ideal reinforced nanofillers in epoxy-based composites, but suffering from poor dispersion because of its high hydrophilicity, and poor compatibility with polymeric matrix which hinders its further application. In this study, a novel tertiary amine-containing compound (C-DEA) was synthesized by the reaction of diethanolamine with C12-C14 alkyl glycidyl ether, then C-DEA was used to modify GO by ionic interaction, thus GO-CDEA was obtained. Moreover, the effect of GO-CDEA content on mechanical and thermal properties of cashew phenol epoxy composite were investigated. Compared to pure epoxy resin (EP), the cashew nut phenol-based nanocomposites (0.2% (by weight) GO-CDEA) perform exceptionally excellent mechanical properties: the rupture strength is 13.76 MPa (73% higher than EP), the Young's modulus is 1049.38 MPa (201% higher than EP), and the elongation-at-break is 138.14% (145% higher than EP). The improved mechanical properties are attributed to the synergistic effect of C-DEA and well-dispersed GO nanosheets, which not only increased the crosslinking density, but also impeded the extension of cracks. Additionally, this novel GO-CDEA-reinforced bio-based renewable cashew phenol epoxy proves to be an ideal candidate for toughening epoxy-based thermosetting materials, showcasing the potential application of bio-based epoxy composite materials. Graphical abstract
研究领域:
材料科学
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化学工程
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产品关联
DOI
高影响因子
Journal of Coatings Technology and Research
·
2018
·Vol. 16
·期 1
·179-188
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IF 1.619
Yuan Yan,Chen Miao,Zhou Qiaohua,Liu Ren
Multiarm cardanol-based oligomers with a cyclotriphosphazene core were prepared through a nucleophilic substitution reaction; the structures of oligomers were fully characterized and confirmed through Fourier transfer infrared spectrometry, 1 H nuclear magnetic resonance (NMR), 31 P NMR, and gel permeation chromatography. The designed multiarm bio-based acrylates (AECC) were successfully prepared by epoxidizing the unsaturated aliphatic chain of cardanol segments with m -chloroperoxybenzoic acid and acrylating epoxy groups. The synthesized oligomers contain rigid phosphazene/benzene rings as “hard cores” and long aliphatic chains as “flexible shells.” Compared with commercial hyperbranched polyurethane acrylate (CN2302) and acrylated epoxidized soybean oil, cured AECC coatings and films exhibited not only greater hardness, excellent adhesion, higher glass transition temperatures, and excellent mechanical properties but also good thermal stability and biodegradability. We successfully obtained a high-performance UV-curing resin that has a high biorenewable material content and can meet basic daily requirements.
研究领域:
材料科学
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化学工程
·
可再生资源利用
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DOI
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 142
·期 2
·e56338
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IF 2.7
Zeyu You,Xiaoan Nie,Min Yu,Renli Fu,Jie Chen
A novel epoxy plasticizer (HCEP) with a hyperbranched polyglycerol structure was synthesized using reduced glycerol and cashew phenol as raw materials. Then it was grafted onto poly(vinyl chloride) (PVC) through click reaction to form self-plasticized PVC. The structure of the product was characterized with various methods. The effects of the degree of internal plasticizer substitution on the properties of PVC were tested through dynamic mechanical, mechanical property, and thermogravimetric analyses. The amorphous dendritic structure of HCEP effectively enhances the free volume of grafted PVC, leading to a reduction in the glass transition temperature and a significant enhancement in flexibility at room temperature. The maximum elongation at break is 289.89%. The grafting of plasticizers onto PVC avoids the leaching of plasticizers during usage, providing a viable solution for reducing reliance on phthalate-based plasticizers.
研究领域:
高分子化学
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材料科学
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化学工程
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产品关联
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
·
2025
·
IF 7.3
Yue Xiao,Jiangming Lv,Xu Ren,Qi Wang,Yihan Song,Bin Liu
With the growing global emphasis on environmental protection and sustainable development, the development of environmentally friendly anti-corrosion coatings has become a significant research direction in the field of materials science. Based on the principles of green chemistry, this study successfully developed a waterborne bio-based epoxy anti-corrosion coating that combines environmental friendliness with outstanding protective performance. The coating was synthesized using cardanol-derived epoxy resin as the raw material, employing a phase inversion emulsification process, and incorporating sulfonated graphene (SG) as a nanofiller. The materials were characterized using NMR, FTIR, XRD, XPS, and SEM, while mechanical property tests, electrochemical impedance spectroscopy (EIS), and salt spray tests were conducted to evaluate the influence of SG content on the coating's comprehensive performance. Experimental results indicate that the coating system with 0.5 wt% SG exhibited improved mechanical properties and corrosion resistance compared to other formulations. The experimental results demonstrate that when the SG content is 0.5 wt%, the low-frequency impedance (|Z| 0.01 Hz ) of the coating reaches 2.96 × 10 9 Ω·cm 2 , which is one order of magnitude higher than that of the unmodified coating. Moreover, the impedance remains stable at this high level even after 720 h of EIS testing. Additionally, during the 360-h scratch salt spray test, this coating exhibits the least noticeable corrosion propagation, indicating that the coating system possesses excellent anti-corrosion performance. This study provides novel design insights and technical pathways for the development of high-performance, environmentally friendly anti-corrosion coatings.
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产品关联
DOI
高影响因子
Materials Today Communications
·
2021
·
IF 3.383
Jianwen Cheng,Qianqian Shang,Chengguo Liu,Lihong Hu,Caiying Bo,Yun Hu,Xiaohui Yang,Yonghong Zhou,Wen Lei
A bio-based superhydrophobic durable cotton fabric was manufactured by using a method of ultrasonic-assisted in situ growth. The hierarchical structure of cotton fibers was generated by the deposition of the hydrophobic composite nanoparticles , which derived from the hydrolysis and co-condensation of cardanol-based benzoxazine (C-aps) and tetraethylorthosilicate (TEOS). The obtained superhydrophobic surface had a water contact angle of 158.5 ± 0.2° with special wettability . The mechanical and environmental stability of the superhydrophobic cotton fabrics were assessed through sandpaper abrasion, ultrasound treatment, high temperature tests, acid/alkaline liquids, solution immersion, and water drop experiment. Additionally, the modified cotton fabrics could separate oil-water mixtures with excellent separation efficiency (> 99.0%), high flux (as high as 6748.2 ± 237.4 L m −2 h −1 ), and stable reusability. The study demonstrates that the bio-based superhydrophobic cotton fabric has practical applications in the management of industrial wastewater and oil contaminants.
研究领域:
材料科学
·
环境工程
·
纺织科学
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DOI
高影响因子
CHEMICAL ENGINEERING JOURNAL
·
2021
·
IF 13.273
Wenwen Guo,Xin Wang,Jiali Huang,Xiaowei Mu,Wei Cai,Lei Song,Yuan Hu
Presently, flammability and brittleness are two major problems for EP which has restricted its development and application in industrial. Under the global advocacy of green and sustainable development, developing bio-based flame-retardant and toughening agents which can endow epoxy resins with high fire resistance and satisfactory mechanical properties is of significant demand for its industrial applications. Herein, three kinds of phosphorylated cardanol-formaldehyde oligomers (CF-PO(OPh) 2 , CF-POPh 2 , and CF-PPh 2 ) were synthesized and introduced into epoxy thermosets. The incorporation of CF-PO(OPh) 2 , CF-POPh 2 , and CF-PPh 2 can remarkably improve the mechanical performance of EP composites, especially the tensile strength and elongation at break. With 10 wt% of CF-PO(OPh) 2 , CF-POPh 2 , and CF-PPh 2 , the tensile strength of epoxy thermosets reached 67.1, 74.5, and 70.3 MPa, respectively; the elongation at break of epoxy thermosets was raised by 133.3%, 162.5%, and 150.0%, respectively, as compared to neat EP. EP composites containing CF-PO(OPh) 2 , CF-POPh 2 , and CF-PPh 2 also exhibited remarkably enhanced flame retardancy simultaneously. Besides, CF-PO(OPh) 2 exhibited the best flame-retardant efficiency by comparison with CF-POPh 2 and CF-PPh 2 , and the results manifested that epoxy composite with only 2.5 wt% CF-PO(OPh) 2 could pass the UL-94 V-0 rating as well as a high LOI value of 28%, and the LOI value of EP/CF-PO(OPh) 2 –10 reached up to 32%. Moreover, CF-PO(OPh) 2 also displayed an excellent catalytic charring effect and great suppression effect on heat and smoke release. The cone calorimeter test results showed that EP composite containing 10 wt% CF-PO(OPh) 2 exhibited the most significant PHRR reduction which was 53.8% lower than pure EP, and the char yield of EP/CF-PO(OPh) 2 –10 after the cone calorimeter test was 14.0% which was much higher than that of pure EP (5.7%). This work opens a new vision for the synthesis of bio-based flame-retardant and toughening agents with a special oligomeric structure combining rigidity with flexibility, and contributes to the production of high-performance epoxy thermosets.
研究领域:
材料科学
·
绿色化学
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
·
2017
·
IF 5.951
Jianxiang Feng,Hongran Zhao,Sen Yue,Shenggao Liu
The use of biophenols to develop bioantioxidants is devoted to sustainable development, reducing energy and environmental issues. In order to step closer to practical application, bioantioxidant effectiveness is as important as renewability. A novel intramolecular synergism strategy aiming at high-efficiency oxidative inhibition is proposed by combining biobased phenol and arylamine in one molecule. Mannich condensation of hydrogenated cardanol (HC) with arylamines and paraformaldehyde led to the formation of three phenol-arylamine antioxidants (BAs). BAs were characterized by HRMS, FT-IR, NMR, and thermogravimetic (TG) analysis. Free radical scavenging activity of BAs was assessed using a DPPH (1,1-diphenyl-2-picrylhydrazyl) method, and was found to be much higher than that of commercial antioxidants. BAs were evaluated as antioxidant and thermal-oxidative stabilizer in polyol in terms of pressure differential scanning calorimetry (PDSC), rotary bomb oxidation tests (RBOT), and TGA. In a comparison to commercial antioxidants, BA1 demonstrated superior antioxidant properties and thermal-oxidation stability, which mostly benefit from intramolecular synergism.
研究领域:
化学工程
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材料科学
·
可持续发展
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产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）