Journal of Materials Chemistry B
·
2022
·Vol. 10
·期 45
·9413-9423
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IF 7.571
Yuxia Zhang,Xiaoyu Lu,Chongyi Chi,Yanyan Zheng,Qinhui Chen
It is of utmost importance that bleeding should be stopped and infection be prevented in people with trauma. In this study, an anisotropic Janus mesoporous silica nanosheet (MSNS) with different functional groups was designed and prepared. In order to endow both sides of the MSNS with independent fast hemostasis and effective antibacterial action, the MSNS was modified with cardanol (CA) and 2,3-epoxypropyltrimethylammonium (GTA). The addition of CA significantly improved the hemostatic property of the MSNS. In a SD rat femoral artery injury model, the hemostatic time of CA-MSNS-GTA was 47% shorter than that of the MSNS, attributed to the sealing of the hydrophobic alkyl side chain and the adhesion of phenolic hydroxyl groups in CA. CA-MSNS-GTA could form a three-dimensional network with fibrin to further accelerate the coagulation process. This Janus material exhibited excellent antibacterial effects (∼90%) against Gram-positive bacteria (S. pneumoniae) and Gram-negative bacteria (E. coli) due to the presence of GTA. The cytotoxicity test showed that CA-MSNS-GTA exhibited biosafety, which provided safety guarantee for clinical applications in the future. This Janus dressing with different functions on two opposite sides provides synergetic multifunctional effects during wound healing.
研究领域:
材料科学
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生物医学工程
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创伤护理
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产品关联
DOI
PubMed
高影响因子
INDUSTRIAL CROPS AND PRODUCTS
·
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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产品关联
DOI
高影响因子
POLYMER DEGRADATION AND STABILITY
·
2014
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IF 2.633
Meng Zhang,Jinwen Zhang,Shuigen Chen,Yonghong Zhou
In this work, a melamine and cardanol-derived Mannich base polyol (MCMP) was synthesized via a two-step process. First, cardanol was allowed to react with paraformaldehyde melamine and diethanolamine to yield mixed Mannich bases which were subsequently propoxylated to give the MCMP. Rigid polyurethane foams (RPUFs) were prepared using MCMP and a polyisocyanate. Effects of expandable graphite (EG), ammonium polyphosphate (APP) and diethyl ethylphosphate (DEEP) on the flame retardancy, mechanical properties , thermal stability and morphology of the resultant RPUFs were studied. It was demonstrated that the melamine incorporated into the MCMP molecular structure increased the thermal stability and the flame retardancy of the RPUF. The fire resistance of the foam could be further enhanced by the addition of flame retardants . EG is more effective than APP and DEEP in enhancing the limiting oxygen index of MCMP-based RPUFs. The flame-retardant-filled RPUFs display a better compressive strength , thermal stability, char residue, heat release and smoke emission than does the non-filled foams.
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
MATERIALS LETTERS
·
2022
·
IF 3.574
Hongming Tang,Linyao Zhou,Xinchao Bian,Tianchang Wang,Lidong Feng,Bao Zhang,Yanlong Liu,Xuesi Chen
Grafting reaction between poly (lactic acid) (PLA) and cardanol was initiated by dicumyl peroxide at different compositions, and the mechanical, thermal properties were characterized. In absence of dicumyl peroxide (DCP), the PLA/cardanol blends showed a typical plastic behavior with increasing cardanol content, i.e. decrement of tensile strength, accompanied by increment of elongation at break, while the notched Izod impact strength kept low level until the cardanol content reached 20 wt%. When DCP was introduced into the blends, only 15 wt% cardanol content was needed to improve the notched Izod impact strength significantly. According to the thermal behavior testing results, the grafting of cardanol onto PLA chains might take responsibility for the further improvement of impact strength with less cardanol content.
研究领域:
材料科学
·
高分子化学
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DOI
高影响因子
ACS Applied Bio Materials
·
2020
·
IF 0
Jiawen Chen,Kexin Chen,Qinglin Li,Guofa Dong,Jie Ai,Haiqing Liu,Qinhui Chen
Janus particles with obvious chemical compartition can perform their functions independently, so they have attracted much attention in biomedical materials. Herein, a mesoporous silica/silver Janus nanoparticle modified with cardanol (C-MSN@Ag) was designed and synthesized via redox and click chemical reactions and was further evaluated as a highly efficient hemostatic dressing. This Janus structure endowed C-MSN@Ag with both prominent hemostatic and antibacterial performance. The hemostatic time of C-MSN@Ag on rat liver laceration was up to 40% shorter than that of MSN and MSN@Ag because of adhesion of phenolic compounds on the tissue and the blocking effect of the hydrophobic alkyl chains from cardanol. Besides, C-MSN@Ag could promote coagulation by forming a three-dimensional network with fibrin more quickly than MSN and MSN@Ag. Additionally, due to the released silver ions and phenolic hydroxyl groups of cardanol, C-MSN@Ag exhibited a broad-spectrum antibacterial rate (∼99%) against both Escherichia coli and Staphylococcus aureus. C-MSN@Ag also possessed non-cytotoxicity. This work not only provides a way for the fabrication of silica-based Janus hemostatic agents by the atom-economical click reaction but also gives a direction for the application of the sustainable naturally occurring cardanol.
研究领域:
生物医学材料
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纳米医学
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药物化学
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产品关联
DOI
PubMed
ACS Omega
·
2020
·
IF 2.87
Muhammad Ali,Yunhua Lu,Saad Ahmed,Santosh Khanal,Shiai Xu
This study represents the first attempt to prepare a novel cardanol-based plasticizer. Modified cardanol (MC, i.e., phosphorylated cardanol) containing nitrogen and phosphoric acid groups was synthesized and then incorporated into polyvinyl chloride (PVC) as the secondary plasticizer for partial substitution of dioctyl phthalate (DOP). The molecular structure of MC was characterized by Fourier transform infrared spectroscopy, 1H nuclear magnetic resonance (NMR), and 31P NMR spectroscopy. The thermal degradation behavior, mechanical performance, and compatibility of MC were also investigated. The substitution of DOP with MC enables PVC blends to have higher thermal stability, tensile strength, and leaching resistance. The tensile strength is increased from 17.7 MPa for DOP/PVC blend (MC-0) to 25.7 MPa for MC/PVC blend (MC-4), and the elongation at break is increased from 256 to 432%, respectively. The microstructure of the tensile fractured surface was studied by scanning electron microscopy. The results show that the addition of MC allows PVC blends to have well-balanced properties of flexibility and strength and excellent migration resistance.
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 VINYL & ADDITIVE TECHNOLOGY
·
2024
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IF 3.8
Xuemei Zeng,Jianxiang Feng,Yulin He,Siyu Cao,Cheng Zhou,Kangqi Li,Jinjing Tan,Shuyi Chen,Yong Xia,Yuejun Liu,Pu Shi,Jin Zhu
Bio-based antioxidants have garnered attention for their sustainability and environmental benefits. In this study, we designed and synthesized three cardanol-piperidine derivatives (HSs) by utilizing hydrogenated cardanol (HC) and piperidine derivatives to improve the aging inhibition of polypropylene (PP). These bio-based antioxidants were intended as eco-friendly alternatives to conventional synthetic antioxidants. The impact of these HSs on the thermal stability, thermo-oxidative stability, and light stability of PP was thoroughly evaluated. The results unveiled that after 5 h of interaction with 2,2-diphenyl-1-picrylhydrazyl free radical, HSs exhibited a remarkable over 5-fold increase in free radical scavenging efficiency as compared to HC. Moreover, the addition of HSs significantly increased the oxidation induction time and the initial oxidation temperature compared to pristine PP. After photo-oxidative aging and thermo-oxidative aging, the HS-dosed PP demonstrated remarkable retention of elongation at break, reaching more than 72% and 69%. From the comparison with physical mixtures and the density functional theory calculations, an intramolecular synergism mechanism is proposed. The intramolecular synergism between hydrogenated cardanol and piperidine derivatives may be the main reason for the inhibition of PP aging. Highlights A method for constructing simultaneous efficient light, thermal, and oxygen stable polypropylene. The mechanism for achieving simultaneous stabilization of light, heat, and oxygen is the intramolecular synergy of phenol piperidine. The essence of intramolecular synergy of cardanol and piperidine derivatives is its' reduced hydrogen bond dissociation energy and energy gap.
研究领域:
材料科学
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化学工程
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高分子科学
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可持续化学
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产品关联
DOI
高影响因子
RSC Advances
·
2016
·Vol. 6
·期 67
·62999-63005
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IF 3.289
Caiying Bo,Shikang Wei,Lihong Hu,Puyou Jia,Bingchuang Liang,Jing Zhou,Yonghong Zhou
A cardanol-based P-containing polyurethane prepolymer (PPUP), a novel cardanol derivative, was synthesized. Its structure was confirmed by Fourier transform infrared spectrometry and 1H nuclear magnetic resonance. Then phenolic foams (PFs) modified with different contents of PPUP were prepared. The addition of PPUP improves the compressive and specific strengths of the foams, while appropriate addition of PPUP into the resin matrix enhances the specific compressive and flexural strength of PFs. Incorporation of PPUP into PFs leads to a reduced pulverization ratio. The limiting oxygen index increases continuously with the increasing addition of PPUP into PFs. Analysis of thermal decompositions shows that the modified PFs have a similar thermal resistance to pristine foam.
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
POLYMERS FOR ADVANCED TECHNOLOGIES
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2022
·Vol. 34
·期 1
·181-194
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IF 3.348
Yang Yang,Caili Zhang,Yu Han,Yunxuan Weng
Poly(vinyl chloride) (PVC) is a widely used plastics in different industries. It is an intrinsically hard and brittle polymer and requires the use of plasticizers to improve the processability. Commonly used phthalate-based plasticizers have serious toxicity issues and we present alternatives based on epoxidized soybean oil (ESO) and epoxidized cardanol esters (ECEs). ECEs are synthesized from cardanol and three fatty acids (oleic, ricinoleic, and myristic) using 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide (EDC) as a coupling agent. Their structure and purity are confirmed by Fourier transform infrared spectroscopy (FTIR) and Nuclear magnetic resonance. Moreover, plasticized PVC films are prepared using a solvent-free method. The replacement of 10 phr of ESO with 5 phr of ECE improves the plasticizing power due to the co-solvency effect. Mechanical properties and thermal stability of plasticized PVC films are correlated with the chain length and the number of epoxy groups in ECE. The best plasticizing effect is observed for epoxidized cardanol-myristate (ECD-MA). ECD-MA as a shorter-chain secondary plasticizer is more compatible with ESO and allows higher conformational mobility of PVC chains. PVC/30ESO/5ECD-MA polymer exhibits an exceptionally high initial thermal decomposition temperature (314.4°C) while preserving moderate ductility and tensile strength (263.4% and 23.3 MPa). Overall, this study highlights the potential applicability of ECD-MA in combination with ESO as a sustainable, bio-based plasticizer and heat stabilizer for flexible PVC products.
研究领域:
材料科学
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高分子化学
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环境科学
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产品关联
DOI
高影响因子
Polymers
·
2019
·Vol. 12
·期 1
·45
·
IF 3.164
Yawen Zheng,Lei Chen,Xiaoyun Wang,Guangshun Wu
A facile in situ polymerization was developed for grafting renewable cardanol onto the carbon fiber (CF) surfaces to strengthen the fiber–matrix interface. CFs were chemically modified with hydroxyl groups by using an aryl diazonium reaction, and then copolymerized in situ with hexachlorocyclotriphosphazene (HCCP) and cardanol to build cardanol-modified fibers (CF-cardanol). The cardanol molecules were successfully introduced, as confirmed using Raman spectra and X-ray photoelectron spectroscopy (XPS); the cardanol molecules were found to increase the surface roughness, energy, interfacial wettability, and activity with the matrix resin. As a result, the interlaminar shear strength (ILSS) of CF-cardanol composites increased from 48.2 to 68.13 MPa. In addition, the anti-hydrothermal ageing properties of the modified composites were significantly increased. The reinforcing mechanisms of the fiber–matrix interface were also studied.Keywords:carbon fibers;polymer-based composites;fiber–matrix interface;cardanol;surface grafting
研究领域:
材料科学
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复合材料工程
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DOI
PubMed
高影响因子
Materials Today Communications
·
2023
·
IF 3.8
Xiaoyu Lu,Yicheng Zhang,Chengfeng Liu,Yanyan Zheng,Qinhui Chen
Inspired by mussel protein, the adhesives based on dopamine boom due to its perfect adhesion performance. However, limited by its high price, it is of great significance to study adhesives originated from natural and renewable phenolic and polyphenol compounds which structure is similar to dopamine. The application of natural products can also reduce the consumption of non-renewable petrochemical resources. Herein, the agriculture and forestry by-products cardanol (CA) was grafted onto liquid polyisoprene rubber (LIR) molecular chains to improve its surface energy. Then, the grafting product (LCA) experienced complex formulation (GLCA) and vulcanization (v-LCA). The vulcanization crosslinking was confirmed by the weakening of double bonds absorption in IR spectra and C-C peak in XPS spectra, the enhancement of methyl proton in the α-position of quaternary carbon atom in 1 H NMR spectra. The GLCA adhesive agent showed good adhesion performance on wet polar substrates because the drainage effect of LIR and the alkyl chains of CA. Moreover, CA provides the possibility of the multiple interactions as metal bonding, hydrogen bonding , cation-π interaction, π-π stacking, hydrophobic interaction and entanglement between chains. The v-LCA adhesive layer exhibits good solvent resistance . This study provides a prospect of the natural phenolic compounds from agriculture and forestry by-products to be used in the wet adhesion of industry, agriculture, or daily life.
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
CHEMICAL ENGINEERING SCIENCE
·
2024
·
IF 4.1
Haoyu Zhang,Huimin Ye,Hanfei Liu,Wenyan Zhang,Su Wang,Shuangfei Zhao,Weidong Zhang,Yuguang Li,Dong Ji,Shuangtao Li,Songbo Ni,Yiping Huang,Zheng Fang,Wei He,Yingcheng Li,Kai Guo
In this study, microfluidic system was adopted to investigate the effects of hydrodynamic factors on chemical flooding. The combination of visualization experiments and computational fluid dynamics (CFD) simulations was used to evaluate the effects of flow rate, interfacial tension (IFT), viscosity, density, contact angle and porosity on EOR (enhanced oil recovery). The chemical flooding regulation model was built through dimensional analysis of hydrodynamic factors, affording oil displacement empirical formula for oil displacement by fitting EOR data. The empirical formula displayed high applicability within a certain range of capillary number (Ca), oil–water density ratio and porosity. In addition, the empirical formula was expected to guide the development of a cardanol-based surfactant, whose preparation process was optimized in the microreactor. These findings would provide useful references for understanding the EOR mechanism of chemical flooding at micro-scale.
研究领域:
石油工程
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化学工程
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数值模拟
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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）