Article
Energy & Fuels
Xianwu Zhang, Hong Zhang, Haoxuan Wang, Yijun Cao, Ling Zhang
Summary: Oily sludges produced during oil production processes are hazardous to the environment. A chitosan-based emulsion was developed to efficiently remove heavy oil from solids, providing valuable information on treating technology for oily sludge and oil-contaminated solids.
Article
Energy & Fuels
Yanne Katiussy Pereira Gurgel Aum, Pedro Tupa Pandava Aum, Daniel Nobre Nunes da Silva, Luyara de Almeida Cavalcante, Eduardo Lins de Barros Neto, Tereza Neuma de Castro Dantas
Summary: This study characterizes an oil-in-water (O/W) microemulsion system with the potential for removing paraffinic deposits. The system can effectively solubilize paraffin without altering phase equilibrium and rheology behavior, as demonstrated through phase equilibrium, droplet size, and rheology characterization.
Article
Polymer Science
Matteo Bergoglio, David Reisinger, Sandra Schloegl, Thomas Griesser, Marco Sangermano
Summary: In this study, a bio-based solvent-free vitrimer was successfully synthesized using epoxidized castor oil (ECO) through a UV-curing process. Real-time Fourier-transformed infrared spectroscopy and photo-DSC were used to monitor the UV-curing process. The UV-cured polymer networks exhibited thermo-activated bond exchange reactions due to the presence of a transesterification catalyst. The ECO-based vitrimer showed high thermal resistance and good mechanical properties, making it a promising starting point for sustainable vitrimers.
Article
Chemistry, Physical
Giovanna Poggi, Harshal D. Santan, Johan Smets, David Chelazzi, Daria Noferini, Maria Laura Petruzzellis, Luciano Pensabene Buemi, Emiliano Fratini, Piero Baglioni
Summary: This study proposes the use of cost-effective sustainable polyurethane crosslinking to obtain castor oil organogels for cleaning water-sensitive artifacts in modern/contemporary art. The nanoscale organization, viscoelasticity, and cleaning action of the gels can be controlled by adjusting the amount of crosslinking, polymeric backbone, and loaded solvents. These gels offer advantages such as dry storage, easy solvent loading, and controlled release, making them a feasible solution for cultural heritage preservation.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2023)
Article
Construction & Building Technology
Jing Liu, Songtao Lv, Xinghai Peng, Shuo Yang
Summary: This study utilized two different sources of bio-oils for the modification of bio-asphalt, showing that castor oil-based polyurethane can enhance the high-temperature properties of bio-asphalt. By adjusting the content of castor oil and polyurethane, the performance of bio-asphalt can be optimized.
CONSTRUCTION AND BUILDING MATERIALS
(2021)
Article
Construction & Building Technology
Ran Zhang, Qingwen Shi, Pengkun Hu, Jie Ji, Zhi Suo
Summary: This study investigates the influence of castor oil-based bio-oil on the properties and microstructure of asphalt binder. The results show that bio-oil can soften the asphalt and reduce its consistency. The addition of bio-oil weakens the high-temperature performance of the asphalt, but slightly improves its thermostability. Furthermore, bio-oil enhances the low-temperature flexibility and ductility of the asphalt, and improves its resistance to moisture damage. Castor oil-based bio-oil is mainly physically blended with petroleum asphalt according to FTIR analysis. Based on the high- and low-temperature performance and moisture susceptibility, the asphalt containing 5% bio-oil is recommended for the construction of traffic infrastructures.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Polymer Science
Joo Hyung Lee, Seong Hun Kim, Kyung Wha Oh
Summary: In this study, castor oil was utilized as a sustainable resource to synthesize multifunctional polyols for the production of polyurethane foam, aiming to improve production efficiency, sustainability, and compressive strength. The results demonstrated that using multifunctional polyol blends to fabricate polyurethane foams effectively enhances their compressive properties. The findings are expected to broaden the applications of bio-based polyurethane foams.
Article
Chemistry, Physical
Chintya Gunarto, Hao-Yen Hsu, Alchris Woo Go, Shella Permatasari Santoso, Chi Thanh Truong, Yi-Hsu Ju, Artik Elisa Angkawijaya
Summary: In this study, cellulose nanocrystal (CNC) was added to modify the stability and characteristics of microemulsions (MEs). The results demonstrate that the supplementation of CNC can reduce the usage of surfactant, resulting in optimal hydrodynamic diameter and stability of MEs.
JOURNAL OF MOLECULAR LIQUIDS
(2021)
Article
Materials Science, Characterization & Testing
Jungha Lee, Jung Hyeun Kim
Summary: In this study, castor oil-based bio-polyol and two types of gelling catalysts were used to synthesize PU foams. The effects of bio-polyol content and catalyst type on sound absorption, compression strength, and VOCs emission were examined. The results showed that increasing bio-polyol content and using a tin catalyst resulted in smaller cavity and pore sizes, leading to higher sound absorption and compression strength. Moreover, the application of bio-polyol also reduced VOCs emissions from foam degradation. Therefore, using bio-derived polyol holds promise for reducing environmental issues in industrial applications.
Article
Environmental Sciences
R. Najjar, L. Zarei-Gharehbaba, M. Tazerout
Summary: The study found that the fuel microemulsion based on diesel and sunflower oil could be stable for up to one year and had comparable fluid properties to neat diesel fuel. Engine combustion tests showed that the microemulsion reduced fuel consumption and emissions, demonstrating potential environmental benefits.
INTERNATIONAL JOURNAL OF ENVIRONMENTAL SCIENCE AND TECHNOLOGY
(2022)
Article
Polymer Science
Xiao Wei, Junqi Ge, Fei Gao, Fengbiao Chen, Wenxiong Zhang, Jiang Zhong, Cong Lin, Liang Shen
Summary: By synthesizing MACO with different ratios of acid groups, bio-based coating materials with different mechanical properties can be prepared. In a representative film containing 50% acid groups, the coating material demonstrated high elongation strength and tensile strength. Stress-relaxation and mechanical performance recovery experiments showed that the film had a self-healing efficiency of 80% at 120 degrees Celsius.
EUROPEAN POLYMER JOURNAL
(2021)
Article
Energy & Fuels
Tereza Neuma de Castro Dantas, Flavia Freitas Viana, Tamyris Thaise Costa de Souza, Afonso Avelino Dantas Neto, Pedro Tupa Pandava Aum
Summary: Microemulsion flooding is a chemical EOR method that enhances oil recovery by reducing surface tension and changing rock wettability. Experimental results demonstrate the potential of microemulsion prepared with alkali and polymer in the EOR process, achieving up to 97% of the oil recovery factor.
Article
Chemistry, Physical
Constantin Gaina, Oana Ursache, Viorica Gaina, Alexandru-Mihail Serban, Mihai Asandulesa
Summary: This paper presents the synthesis and thermal behavior of novel epoxy resins derived from epoxidized castor oil. It compares the properties of these resins with a petroleum-based epoxy resin. The results show that the castor oil-based resins have a lower glass transition temperature (T-g) compared to the petroleum-based resins, but the introduction of trimethylolpropane triglycidyl ether (TMP) can increase T-g. The morphological behavior is not significantly affected by the use of epoxidized castor oil or the addition of TMP in the resin synthesis. The dielectric properties of the epoxy resins were also analyzed.
Article
Materials Science, Multidisciplinary
Daidong Wei, Juanjuan Zeng, Qiwen Yong
Summary: In this study, a bio-based hyperbranched polyurethane antismudge coating with excellent liquid repellency and self-cleaning ability was developed, showing superior corrosion resistance and adhesion grade when applied on various surfaces. The coating also demonstrated the ability to contract ink traces and withstand 1000 abrasion cycles without sacrificing its performance.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Polymer Science
Sundol Kim, Hoyong Chung
Summary: A novel 100% biomass-based polymer, lignin-graft-castor oil, was synthesized by chemically modifying lignin and castor oil and linking them through esterification. The copolymer showed controllable properties and can be a genuine solution to plastic waste due to its 100% biomass composition and degradability.
Article
Forestry
Xiangyu You, Junlei Duan, Keiichi Koda, Tatsuhiko Yamada, Yasumitsu Uraki
Article
Materials Science, Paper & Wood
Xiangyu You, Keiichi Koda, Tatsuhiko Yamada, Yasumitsu Uraki
JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY
(2016)
Article
Ecology
Toshizumi Miyamoto, Keiichi Koda, Arata Kawaguchi, Yasumitsu Uraki
Article
Materials Science, Paper & Wood
Shogo Taira, Makoto Kurihara, Keiichi Koda, Kazuki Sugimura, Yoshiyuki Nishio, Yasumitsu Uraki
Article
Materials Science, Paper & Wood
Keiichi Koda, Shogo Taira, Atsushi Kubota, Tomofumi Isozaki, Xiangyu You, Yasumitsu Uraki, Kazuki Sugimura, Yoshiyuki Nishio
JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY
(2019)
Article
Materials Science, Paper & Wood
Md. Momotaz Ali, Nutthira Pakkang, Shogo Taira, Keiichi Koda, Koki Itoyama, Yasumitsu Uraki
JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY
(2019)
Article
Materials Science, Paper & Wood
Yuu Hasegawa, Mitsunori Mori, Keiichi Koda, Yasumitsu Uraki
JOURNAL OF WOOD CHEMISTRY AND TECHNOLOGY
(2020)
Article
Materials Science, Paper & Wood
Shogo Taira, Masataka Tsuruhara, Ryo Saito, Keiichi Koda, Yasumitsu Uraki, Haruo Konno, Shu Shimamoto
Article
Forestry
Nutthira Pakkang, Manish Kumar, Shogo Taira, Keiichi Koda, Kengo Shigetomi, Yasumitsu Uraki
Article
Nanoscience & Nanotechnology
Manish Kumar, Shogo Taira, Nutthira Pakkang, Kengo Shigetomi, Yasumitsu Uraki
Summary: In this study, a lignin-based conducting carbon nanofiber mat was prepared through electrospinning and thermal treatment. The stretched mat showed improved surface conductivity and surface area compared to the non-stretched mat, resulting in a higher specific capacitance for electric double layer capacitors.
ADVANCES IN NATURAL SCIENCES-NANOSCIENCE AND NANOTECHNOLOGY
(2022)
Article
Agricultural Engineering
Ningning Cheng, Keiichi Koda, Yutaka Tamai, Yoko Yamamoto, Taichi E. Takasuka, Yasumitsu Uraki
BIORESOURCE TECHNOLOGY
(2017)
Article
Materials Science, Paper & Wood
Yoko Yamamoto, Ningning Cheng, Keiichi Koda, Kiyohiko Igarashi, Yutaka Tamai, Yasumitsu Uraki