Polymers
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2018
·Vol. 10
·期 10
·1111
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IF 2.935
Peng Lu,Mengya Guo,Yang Yang,Min Wu
Emulsion templating has emerged as an effective approach to prepare polymer-based foams. This study reports a thermosetting nanocomposite foam prepared by nanocellulose stabilized Pickering emulsion templating. The Pickering emulsion used as templates for the polymeric foams production was obtained by mechanically mixing cellulose nanocrystals (CNCs) water suspensions with the selected oil mixtures comprised of acrylated epoxidized soybean oil (AESO), 3-aminopropyltriethoxysilane (APTS), and benzoyl peroxide (BPO). The effects of the oil to water weight ratio (1:1 to 1:3) and the concentration of CNCs (1.0–3.0 wt %) on the stability of the emulsion were studied. Emulsions were characterized according to the emulsion stability index, droplet size, and droplet distribution. The emulsion prepared under the condition of oil to water ratio 1:1 and concentration of CNCs at 2.0 wt % showed good stability during the two-week storage period. Nanocomposite foams were formed by heating the Pickering emulsion at 90 °C for 60 min. Scanning electron microscopy (SEM) images show that the foam has a microporous structure with a non-uniform cell size that varied from 0.3 to 380 μm. The CNCs stabilized Pickering emulsion provides a versatile approach to prepare innovative functional bio-based materials.Keywords:cellulose nanocrystals;AESO;Pickering emulsion;nanocomposite foam
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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产品关联
DOI
PubMed
高影响因子
JOURNAL OF APPLIED POLYMER SCIENCE
·
2024
·Vol. 142
·期 10
·e56550
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IF 2.7
Yuhang Huang,Yingkang Zhu,Lijun Cao,Yidan Jing,Zhigang Xu,Guochu Tang,You Shu,Xiaoqing Liu,Xiaomin Zhang
The photo-induced cis-trans isomerization of azobenzene molecules, known for their significant color changes, is extensively utilized in the functional modification of polymeric materials. However, the research on the functionalization of biomass-based polyesters with azobenzene is limited. A key raw material for biomass-based coatings possess reactive double bonds and excellent film-forming capabilities, offering significant advantages for azobenzene functionalization in biomass-based polyester applications. In this study, AESO served as the polyester matrix and acrylate azobenzene derivatives as the functional molecules. Under ultraviolet radiation, AESO underwent a carbon–carbon crosslinking reaction with the azobenzene derivatives to synthesize a novel resin. The coating of this resin on a PET substrate exhibited excellent pencil hardness (3B), adhesion (5B), and solvent resistance. By alternating exposure to ultraviolet and blue light, the coating displayed reversible switching between cis and trans isomers, enabling reversible writing and erasing of patterns. Even after 20 cycles of writing and erasing, high-resolution patterns could still be observed (clearly visible under a 12x microscope). Furthermore, the image could be retained for up to 2 h under sunlight irradiation. This study presents a new method for functionalizing biobased polyesters.
研究领域:
材料科学
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生物质化学
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光学材料
✓ 已验证
DOI
高影响因子
PROGRESS IN ORGANIC COATINGS
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2021
·
IF 5.161
Ren Liu,Xuwang Tian,Zhiwei Wang,Jian Zhang,Peng Lu,Chongxing Huang
Nanocellulose crystals (NCC) are efficient bio-particles in preparing Pickering emulsion with sustainable merits. In this study, a thermally curable coating emulsion was developed by stabilizing sustainable acrylate epoxidized soybean oil (AESO) in water using pristine NCC alone. A stable AESO aqueous emulsion was obtained by adjusting the AESO fraction to 10% and the concentration of NCC to 1.0 wt%. Fluorescence microscopy and conductivity measurement confirmed the emulsion inversed from oil-in-water to water-in-oil as AESO fraction increasing. Pickering emulsion of NCC concentrations ranging from 0.5 wt% to 3.0 wt% exhibited different droplets microstructure and rheological behavior . Increasing the concentration of NCC enhanced the stability of the corresponding emulsion, including an increase in viscosity and deformation recovery ability. The stability of the emulsion was correlative with the concentration of NCC suspensions, and the dynamic viscoelastic study provided useful guidance for identifying the fine difference between emulsions with respect to NCC concentration. Implementing of the AESO emulsion as a reactive coating on paper enhanced the paper water barrier and tensile strength due to the curing of AESO. This novel NCC stabilized AESO emulsion is surfactant-free in preparation and has a flexible application on paper as a reactive coating for enhanced barrier performances.
研究领域:
材料科学
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化学工程
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可持续发展
✓ 已验证
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
·
2023
·
IF 8.2
Femiana Gapsari,Djarot B. Darmadi,Hans Juliano,Syarif Hidayatullah,Suteja,Sanjay Mavinkere Rangappa,Suchart Siengchin
Natural fibers are available as an essential substitute for synthetic fiber in many applications. However, the sensitivity of Chinese Windmill Palm or Trachycarpus Fortune Fiber (TFF) to water causes low interfacial bonding between the matrix and the fiber and at the end reduces the mechanical properties of the composite product. Alkaline treatment improves mechanical properties and does not affect water absorption. Hence, additional treatment in the coating is required. This study uses alkaline treatment and coating modification using blended chitosan and Acrylated Epoxidized Soybean Oil (AESO). Blend coating between AESO and chitosan is performed to increase water absorption and mechanical properties. TFF water resistance improved significantly after the coating, with water absorption of the alkaline/blend coating-TFF of 3.98 % ± 0.52 and swell ability of 3.156 % ± 0.17. This indicated that blend coating had formed a cross-link of fiber and matrix after alkalization. Thus, the single fiber tensile strength increased due to the alkaline treatment, and water absorption decreased due to the coating. The combination of alkaline treatment and blend coating on TFF brings excellent properties, as shown by the increase in tensile strength in both single fiber test and composite.
研究领域:
材料科学
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复合材料
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纤维科学
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表面化学
✓ 已验证
产品关联
DOI
PubMed
高影响因子
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
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2021
·
IF 3.764
Qiuyu Tang,Qian Li,Yunhan Luo,Xun Pan,Zhenhao Xi,Ling Zhao
Acrylated epoxidized soybean oil (AESO) as a biobased curable oligomer with different functionalities and poly(octamethylene maleate (anhydride) citrate) (POMaC) as a biobased unsaturated monomer with polar groups were both synthesized. The chemical structures of POMaC and AESO were confirmed by Fourier transform infrared (FT-IR) and 1H nuclear magnetic resonance (1H NMR) spectroscopies. Then POMaC was used to copolymerize with AESO to prepare a series of high biobased content coatings via an ultraviolet (UV) curing process. The thermomechanical properties and coating properties in terms of hardness, adhesion, and water contact angle (WCA) were also investigated. The results show that AESO/POMaC coating has improved thermal stability and improved hardness compared with bare AESO-based coating. Furthermore, the adhesion of AESO/POMaC was markedly improved by 290%. The mechanism of adhesion enhancement was investigated by the combination of experiment and simulation. The decreased water contact angle represents the enhanced surface free energy of AESO/POMaC, and the molecular dynamics simulation results show higher binding energy and more hydrogen bonds of AESO/POMaC with the substrate. These results confirm that the polar groups and high soft-segment content of AESO/POMaC coating could strongly interact with the surface and could provide more adhesion contact area, which is responsible for the increased adhesion under dry and wet conditions. This work illustrates the potential of POMaC, as a renewable alternative component for the development of high-performance AESO-based green coatings in the future.
研究领域:
材料科学
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绿色化学
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产品关联
DOI
高影响因子
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
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2026
·
IF 8.7
Huaqiang Cao,Jia Hu,Xiaoqing Han,Yajie Li,Ruirui Liu,Yan Li,Bin Li,Shilin Liu
With the rise of takeaway and ready-to-eat food delivery services, the demand for packaging that preserves food freshness is increasing. In this study, a fully renewable phase change foam was fabricated via a Pickering emulsion templating method, incorporating carnauba wax (CW) and acrylated epoxidized soybean oil (AESO). The effects of CW concentration on the rheological behavior, microstructure, thermal energy storage, and mechanical strength were systematically investigated. The incorporation of higher CW content improved both compressive strength (0.135–0.364 MPa) and thermal storage capacity (13.8 J/g at 10 wt%), thereby demonstrating enhanced structural stability and thermal buffering performance. Under simulated food delivery conditions, the optimized foam maintained a stable thermal plateau (75–75.3 °C) for 30 s, exhibiting a 5.8 °C reduction in temperature decay relative to the control AESO foams. These findings provide a promising strategy for developing sustainable, thermally efficient packaging materials for short-term temperature stabilization in food packaging applications.
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产品关联
DOI
PubMed
高影响因子
CONSTRUCTION AND BUILDING MATERIALS
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2024
·
IF 7.4
Mingen Fei,Chenhui Luo,Xiaoyan Zheng,Tengfei Fu,Kunqi Ling,Han Chen,Wendi Liu,Renhui Qiu
Pervious concrete has a unique open-skeleton structure and high permeability, which effectively control water runoff, mitigate urban heat island effects , and reduce traffic noise in urban constructions. However, low strength , easy granulation, and poor durability often limit its application in pavement engineering . As a polymer binder , vinyl ester (VE) resin has high strength, wear resistance, durability, and corrosion resistance , which can remedy the shortage of pervious concrete. In this work, by optimizing the aggregate gradation and curing temperature, high-performance pervious concrete using VE resin as binder was fabricated. To further improve the performance of VE binder, renewable acrylated epoxidized soybean oil (AESO) and diphenylmethane diisocyanate (MDI) were used to increase the crosslinking degree of the resin and the durability of pervious concrete. When using 15% AESO and 10% MDI based on the weight of VE, the pervious concrete achieved an enhanced flexural strength of up to 7.72 MPa. A significant improvement was achieved by incorporating 50 wt% solid wastes copper slag into the pervious concrete, the compressive strength and flexural strength reached 37.72 MPa and 7.53 MPa, respectively. The permeability coefficient of the permeable concrete was 2.64 mm/s, and the connected porosity was 11.33%, which are higher than the requirements of China national standard. The satisfactory durability of pervious concrete was also verified through freeze-thaw, abrasion, and aging tests. This work offers a viable strategy for cost-efficient and sustainable high-performance pervious concrete, providing insights into the utilization of renewable feedstocks and solid wastes in civil materials.
研究领域:
土木工程
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材料科学
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环境工程
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产品关联
DOI
高影响因子
ACS Sustainable Chemistry & Engineering
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2016
·
IF 5.267
Peng Li,Songqi Ma,Jinyue Dai,Xiaoqing Liu,Yanhua Jiang,Sheng Wang,Jingjing Wei,Jing Chen,Jin Zhu
In this paper, itaconic acid was monomethylated with methanol to produce monomethyl itaconate, and then monomethyl itaconated epoxidized soybean oil (IESO) was obtained by melt ring-opening esterification of monomethyl itaconate with ESO. For comparison, acrylated epoxidized soybean oil (AESO) was also synthesized from ESO and acrylic acid with the same synthetic method. The chemical structures of monomethyl itaconate, IESO, and AESO were characterized in detail by differential scanning calorimetry (DSC), FTIR, and 1H NMR. The isothermal thermogravimetric analysis at 30, 60, and 90 °C indicated that monomethyl itaconate exhibited extremely low volatility even at 90 °C, while acrylic acid volatilized very fast even at 30 °C, which suggested that monomethyl itaconate could be used as a green alternative to acrylic acid. Under UV radiation, IESO showed good copolymerization ability with reactive monomers such as glycidyl methacrylate modified itaconic acid (IG), trimethylolpropane triacrylate (TMPTMA), and styrene. The cured neat IESO exhibited similar properties to the neat AESO, and the IESO/reactive monomers systems showed higher glass transition temperature (Tg), modulus, and comparable or better tensile strength and coating properties than the AESO/reactive monomers systems.
研究领域:
材料科学
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聚合物化学
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绿色化学
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可持续材料
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）