Article
Polymer Science
Wenxue Lou, Zhuding Dai, Pingping Jiang, Pingbo Zhang, Yanmin Bao, Xuewen Gao, Jialiang Xia, Agus Haryono
Summary: A series of soybean oil-based polyols were synthesized and used to prepare aqueous polyurethanes. The hydroxyl value of the polyols was found to greatly affect the mechanical, thermal, and hydrophobic properties of the resulting polyurethane films. Increasing the hydroxyl value led to higher glass transition temperature, improved water contact angle, and reduced water absorption. Additionally, the polyurethane synthesized from the polyol with the highest hydroxyl value exhibited the lowest degradation rate when exposed to sodium hydroxide solution.
POLYMERS FOR ADVANCED TECHNOLOGIES
(2022)
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
Polymer Science
Mingyang Li, Daidong Wei, Wenchao Zhang, Liyan Liang, Qiwen Yong
Summary: A vegetable oil-based polyol was used to obtain a biobased polyurethane anti-smudge coating with excellent anti-ink and self-cleaning performance. The coating exhibited high smoothness, transparency, and mechanical robustness, and could easily repel water, ink, and other liquids without leaving any residue.
JOURNAL OF APPLIED POLYMER SCIENCE
(2022)
Article
Materials Science, Multidisciplinary
Celia F. Frias, Ana C. Fonseca, Jorge F. J. Coelho, Armenio C. Serra
Summary: This study presents a straightforward and selective method for preparing polyols for PU films by reacting epoxidized soybean oil with amino alcohols. The properties of the resulting PU films depend on the amount of Tolonate in the formulation, obtained through amidation without solvents and catalysts.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2021)
Article
Polymer Science
Yin Yam Chan, Chao Ma, Feng Zhou, Yuan Hu, Bernhard Schartel
Summary: An alternative phosphorous soybean-oil-based polyol was used for flexible polyurethane foams synthesis, with the addition of 5% and 10% expandable graphite (EG) to improve flame retardancy. The combination of phosphorous polyols and EG showed significantly enhanced flame retardancy, with a three times increase in char yield, indicating a potential strategy for future flame retarded FPUFs.
POLYMER DEGRADATION AND STABILITY
(2021)
Article
Agricultural Engineering
Cheng-Shuang Wang, Jie Zhang, Han Wang, Meng He, Liang Ding, Wei-Wei Zhao
Summary: In this study, novel soybean oil-based waterborne polyurethane coatings and films with significantly improved fracture toughness and flame retardancy were successfully synthesized using chain extenders BH and BDO. The mechanical properties of SPU films were effectively improved by the introduction of BH, showing remarkable enhancements in tensile strength, elongation at break, and fracture toughness. The flame retardancy of SPU films increased gradually with the BH molar content, reaching a high LOI value of 28.2% for SPU80 with 0.9 wt% phosphorus content.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Polymer Science
Qi Xu, Jianwei Lin, Guichang Jiang
Summary: This paper explores the use of environmentally friendly and renewable bio-based materials to prepare polyurethane. Epoxy soybean oil and polyethylene glycol were used to prepare soybean oil-based polyester polyols, which were then reacted with isophorone diisocyanate to synthesize soybean oil-based polyurethane. The properties of the polyurethane films were adjusted by changing the reaction conditions, and the results show that the properties of the polyurethane films change accordingly.
Article
Polymer Science
Mohamad Ridzuan Amri, Chuah Teong Guan, Syeed Saifulazry Osman Al-Edrus, Faizah Md Yasin, Siti Fatahiyah Mohamad
Summary: This study investigated the influence of cellulose nanofibrils (CNF) on Jatropha oil-based waterborne polyurethane (WBPU) nanocomposite films, confirming that the addition of CNF can significantly enhance the mechanical and thermal properties of the films. The highest improvement in tensile strength, Young's modulus, and thermal degradation was observed in the nanocomposite film with 0.5 wt.% CNF loading.
Article
Engineering, Environmental
Fang Liu, Shuming Chen
Summary: Bio-based acoustic materials synthesized with coconut oil and rapeseed oil polyurethane show superior acoustic and mechanical properties compared to petroleum-based polyurethane, making them a promising alternative for future applications.
JOURNAL OF POLYMERS AND THE ENVIRONMENT
(2021)
Article
Polymer Science
Murni Sundang, Nur Sjanrah Nurdin, Sariah Saalah, Yamunah Jaibalah Singam, Syeed SaifulAzry Osman Al Edrus, Noor Maizura Ismail, Coswald Stephen Sipaut, Luqman Chuah Abdullah
Summary: In this study, jatropha-based polyester polyols were synthesized and used to produce waterborne polyurethane. The synthesized polyols had viscosities within the range of commercially available polyols, and the resulting waterborne polyurethane dispersions exhibited good stability and dispersibility.
Article
Materials Science, Multidisciplinary
Yuehong Zhang, Zhenqiang Wu, Lei Shi, Langlang Dai, Ruijing Liu, Lei Zhang, Bin Lyu, Shunhua Zhao, Vijay Kumar Thakur
Summary: A novel castor oil-based multifunctional polyol (CM) is synthesized through mild thiol-ene photo induced reactions using castor oil (CO) and 1-thioglycerol (MPD) as building blocks. The resulting CM is combined with CO to prepare castor oil-based water-borne polyurethane emulsion with desirable mechanical properties and water resistance.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2023)
Article
Polymer Science
Juliano R. Ernzen, Jose A. Covas, Angel Marcos-Fernandez, Rudinei Fiorio, Otavio Bianchi
Summary: This study focuses on the synthesis of thermoplastic polyurethanes (TPUs) using a renewable bio-based polyol obtained from soybean oil. The addition of this bio-based polyol enhances compatibility between the segments of the TPU but may also promote cross-linking. Adding small amounts of the bio-based polyol results in high-molecular-weight TPUs with lower polarity, suitable processability, and improved mechanical properties.
Article
Polymer Science
Debasmita Mohanty, Smita Mohanty, Krishnan Kanny
Summary: This study focuses on the synthesis of polyurethane-based coating from modified castor oil through an in situ polymerization process. The modified castor oil was obtained by employing various process steps, including epoxidation, transesterification, and acrylation. The study investigated the structural and thermal properties of the coating and optimized the paint formulation to improve its performance.
POLYMER INTERNATIONAL
(2023)
Article
Materials Science, Characterization & Testing
Dan Hong, Yidong Wu, Zhengyu Wei, Yi Fang, Yabin Zhu
Summary: The use of a solvent-free approach to manufacture antibacterial epoxy coatings with high renewable carbon content is important for environmental sustainability and the diversity of antibacterial materials. In this study, a solvent-free method was used to synthesize eugenol-modified epoxidized soybean oil (EUESO), an epoxy monomer with inherent antibacterial properties and a totally natural carbon source. The cured resins showed high thermodynamic and mechanical properties, as well as a certain degree of killing effect on Escherichia coli (E. coli) in the dynamic shake test.
Article
Chemistry, Applied
Shuai Wang, Fukai Yang, Wei Sun, Xinyu Xu, Yuyuan Deng
Summary: Rigid polyurethane foam (RPUF) is commonly used but consumes a large amount of petroleum. To address this issue, green and sustainable polyols were synthesized. The main disadvantage of RPUF is its flammability. To improve its flame retardancy, phosphorylated soybean oil polyol (Polyol-P) and phenyl phospho-soybean oil polyol (Polyol-PPOA) were used. The results showed that the cell sizes and numbers of RPUF-P and RPUF-PPOA varied with the contents of Polyol-P and Polyol-PPOA. Mechanical tests revealed the compressive strengths of RPUF-P4 and RPUF-PPOA4, while the limiting oxygen index and UL 94 ratings demonstrated the flame retardancy of RPUF-P and RPUF-PPOA.
JOURNAL OF THE AMERICAN OIL CHEMISTS SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Bo Lin, Li-Hong Pan, Dong-Liang Shi, Hua-Kun Huang, Fu-An He, Kwok-Ho Lam, Hui-Jun Wu
JOURNAL OF MATERIALS SCIENCE
(2019)
Article
Engineering, Chemical
Zeng-Tian Li, Fu-An He, Bo Lin
Article
Materials Science, Composites
Bo Lin, Zeng-Tian Li, Ying Yang, Ying Li, Jie-Ci Lin, Xu-Min Zheng, Fu-An He, Kwok-Ho Lam
COMPOSITES SCIENCE AND TECHNOLOGY
(2019)
Article
Materials Science, Coatings & Films
Bo Lin, Jian Chen, Zeng-Tian Li, Fu-An He, De-Hao Li
SURFACE & COATINGS TECHNOLOGY
(2019)
Article
Thermodynamics
Bo Lin, Chen Zheng, Qingying Zhu, Fang Xie
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2020)
Article
Polymer Science
Bo Lin, Chen Zheng, Qingying Zhu, Fang Xie
Article
Engineering, Mechanical
Bo Lin, Zeng-Tian Li, Peng Jiang, Hua-Ying Wang, Ying-Xuan Wu, Fu-An He, Hui-Jun Wu
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2020)
Article
Nanoscience & Nanotechnology
Xianfeng Li, Bo Lin, Chen Zheng, Zhimin Li, Peng Wang, Guocong Liu
Article
Engineering, Mechanical
Bo Lin, Wen-Xu He, Li-Wang Jiang, Zeng-Tian Li, Hua-Ying Wang, Ying-Xuan Wu, Fu-An He, Hui-Jun Wu
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2020)
Article
Thermodynamics
Bo Lin, Chen Zheng, Xianfeng Li, Qingying Zhu, Fang Xie, Guocong Liu
Summary: The study involved coating OTS-LDH composite on the surface of a melamine sponge to create a superhydrophobic material with excellent oil adsorption capacity. The modified sponge showed great oil-water separation efficiency, with an oil adsorption capacity 13.7-21.1 times higher than that of the pristine sponge. Even after repeated cycles of testing, the modified sponge maintained its superior performance.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Article
Engineering, Mechanical
Li-Wang Jiang, Yi-Wang Liu, Qing-Di Hu, Feng-Tao Zeng, Yong-Yu Yang, Xin Lan, Song-Yun Chen, Bo Lin, Fu-An He
Summary: A method to fabricate superhydrophobic electrospun MWCNT-SiO2/PVDF composite membranes for oil adsorption was developed, achieving high water contact angle and adsorption capacities for different oils.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2021)
Article
Materials Science, Multidisciplinary
Bo Lin, Guo-Dong Chen, Fu-An He, Ying Li, Ying Yang, Bo Shi, Feng-Ru Feng, Song-Yun Chen, Kwok-Ho Lam
Summary: In this study, MWCNTs/PVDF composites were prepared by the electrospinning-hot pressing method. The MWCNTs distributed well in the PVDF matrix, and the synergic effect of electrospinning and MWCNTs resulted in the formation of a large amount of useful polar A crystalline phase. Moreover, the dielectric performance of the composites could be controlled by the layer amount of the electrospun wrap-wrap laminated MWCNTs/PVDF composite membrane.
DIAMOND AND RELATED MATERIALS
(2023)
Article
Engineering, Mechanical
Bo Lin, Wan-Yi Chen, Kwok-Ho Lam, Na Shi, Bo Shi, Ying Yang, Yu-Ma Yang, Fu-An He, Li-Wang Jiang
Summary: A fluorine-free strategy was developed for hydrophobic modification of melamine sponge by immobilizing stearic acid-modified Fe3O4 nanoparticles and graphite oxide on the sponge. The resulting SA-Fe3O4/GO/MA sponge showed successful hydrophobic surface modification, high absorption capacities, and excellent magnetic recyclability for oil-water separation.
SURFACE TOPOGRAPHY-METROLOGY AND PROPERTIES
(2022)
Article
Chemistry, Physical
Dong-Dong Mai, Jun-Feng She, Dong-Liang Shi, Fu-An He, Bo Lin, Kwok-Ho Lam
Summary: In this study, Fe3O4-carbon black filler was prepared using an in-situ coprecipitation method, and Fe3O4-carbon black/poly(vinylidene fluoride) (PVDF) composites with enhanced properties were prepared via a simple solution blending-water precipitating method. The SEM analysis confirmed the good dispersion of Fe3O4-carbon black in the PVDF matrix. FTIR and WAXD results revealed the formation of useful polar crystalline phases in the Fe3O4-carbon black/PVDF composites. The electrically conductive ability, dielectric permittivity, dielectric loss factor, and magnetic saturation value of the composites increased with increasing loading amount of Fe3O4-carbon black filler. Particularly, at a loading amount of 5 wt.%, the Fe3O4-carbon black/PVDF composite exhibited a high dielectric permittivity of 23.5 at 1000 Hz, a relatively low dielectric loss factor value of 0.38, and a magnetic saturation value of 0.64 emu/g.
FULLERENES NANOTUBES AND CARBON NANOSTRUCTURES
(2023)
Article
Materials Science, Characterization & Testing
Bo Lin, Fu-An He, Feng-Ru Feng
Summary: Exfoliated graphite nanoplates (xGNPs)/thermoplastic polyurethane (TPU) composites with enhanced dielectric constant and relatively low dielectric loss factor were prepared by a method involving solution blending and water precipitating. The presence of xGNPs in the TPU matrix was confirmed by wide-angle X-ray diffraction and scanning electron microscopy. The xGNPs/TPU composites exhibited lower melting and crystallization temperatures but higher melting and crystallization enthalpies compared to pure TPU. Furthermore, the composites showed significantly increased dielectric constant and thermal conductivity, especially at 2 wt.% xGNPs content.
POLYMERS & POLYMER COMPOSITES
(2022)
