Abstract Materials with high bio-content have gradually replaced petroleum-based materials due to their sustainability, low cost, low toxicity and excellent performance in the field of UV-LED curable coatings. A novel tung oil-based methacrylate (TDMM) with low viscosity and multiple photopolymerizable methacrylates was designed and synthesized through three steps containing amidation, thiol-ene click reaction and esterification. The reaction conditions for thiol-ene click reaction were optimized by calculating double bond conversion and degree of functionalization of polyols. The chemical structures of the as-prepared TDMM were characterized by 1H NMR and FTIR. The rheological behavior analysis indicated that TDMM exhibited lower viscosity than petrochemical-based reactive diluent pentaerythritol triacrylate (PETA). Subsequently, TDMM showed good copolymerization ability with soybean oil-based reactive monomer (AESO) under the “green + green” UV-LED curable systems with high bio-content (61–81% in theory). The TDMM/AESO systems showed higher Tg but lower thermal stability, better modulus and tensile strength than the neat AESO. Besides, the UV-LED cured coatings exhibited excellent physical and chemical properties. This bio-renewable tung oil-based monomer is shown to be an effective reactive diluent and considered to have good potential in the development of the UV-LED curable coatings.
#1Su Yupei(SCAU: South China Agricultural University)H-Index: 3
#2Zhang Shuting(SCAU: South China Agricultural University)H-Index: 3
Last. Teng Yuan(PolyU: Hong Kong Polytechnic University)H-Index: 15
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Abstract A cardanol-based UV-curable reactive diluent (CACAA) was synthesized via two facile acrylation reactions and then copolymerized with acrylated epoxidized soybean oil (AESO) under UV irradiation to prepare cured films with high bio-based content. For comparison, petroleum-based reactive diluents, including pentaerythritol triacrylate (PETA) and bisphenol-A ethoxylated (2) diacrylate (BPAEODA), were also used to copolymerize with AESO under UV irradiation. The characterizations of 1H NMR ...
#1Su Yupei(SCAU: South China Agricultural University)H-Index: 3
#2Zhang Shuting(SCAU: South China Agricultural University)H-Index: 3
Last. Zhuohong Yang(SCAU: South China Agricultural University)H-Index: 15
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Abstract The use of renewable resources and their derivatives provides a "green" approach to synthesizing UV-curable raw materials, and it possesses many advantages, such as environmental protection and energy conservation. Linseed oil has become a research hotspot because of its high content of double bonds and biodegradability. In this study, boron trifluoride diethyl ether was used as a catalyst to successfully introduce acrylic acid into the double bond of linseed oil long chain. Therefore, ...
#1Su Yupei(SCAU: South China Agricultural University)H-Index: 3
#2Hai Lin(SCAU: South China Agricultural University)H-Index: 1
Last. Teng Yuan(SCAU: South China Agricultural University)H-Index: 15
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With the rapid development of social economy, problems such as volatile organic compound (VOC) pollution and the excessive consumption of global petroleum resources have become increasingly prominent. People are beginning to realize that these problems not only affect the ecological environment, but also hinder the development of the organic polymer material industry based on raw fossil materials. Therefore, the modification and application of bio-based materials are of theoretical and practical...
#1Limin Man(SCAU: South China Agricultural University)H-Index: 7
#2Yechang Feng(SCAU: South China Agricultural University)H-Index: 6
Last. Zhuohong Yang(SCAU: South China Agricultural University)H-Index: 15
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Abstract Bio-based waterborne polyurethanes (WPUs) as a novel kind of economic and eco-friendly coating have attracted more attention in recent decades due to their sustainability, availability, and low toxicity advantages. In this work, a tung oil based polyol (TOP) is effectively fabricated without complicated purification process under a relative low reaction temperature, and subsequently used to prepare a series of cationic waterborne polyurethane dispersions (WPUDs) with different TOP conte...
#1Yechang Feng(SCAU: South China Agricultural University)H-Index: 6
#2Chu Zhuangzhuang(SCAU: South China Agricultural University)H-Index: 2
Last. Zhuohong Yang(SCAU: South China Agricultural University)H-Index: 15
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Herein, fishbone-like poly(methyl eleostearate) (PME) plasticizer with high biobased content of near 90% was developed for the production of flexible poly(vinyl chloride) (PVC) by the green cationic polymerization of biobased monomer methyl eleostearate (ME) using renewable coconut oil as solvent, rather than the traditional alkyl halides with toxicity and volatility. The microstructure of PME was investigated by multiple technologies, and the results show that the favored microstructure of PME ...
#1Liang Bin(SCAU: South China Agricultural University)H-Index: 4
#2Jiong Zhao(PolyU: Hong Kong Polytechnic University)H-Index: 1
Last. Teng Yuan(PolyU: Hong Kong Polytechnic University)H-Index: 15
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Abstract With the growing depletion of fossil energy and the unceasing joint efforts to maintain sustainable development, bio-based materials are appealing for academic and industrial researchers because they possess the merits of environmental friendliness and renewability. In this study, a tung-oil-based derivative, tung-maleic anhydride (TMA), which was prepared from methyl eleostearate and maleic anhydride, reacted with epichlorohydrin to synthesize epoxidized tung-maleic anhydride (ETMA) af...
#1Liang Bin(SCAU: South China Agricultural University)H-Index: 4
#2Li Renpu(SCAU: South China Agricultural University)H-Index: 2
Last. Teng Yuan(SCAU: South China Agricultural University)H-Index: 15
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Abstract A novel tri-functional castor oil-based methacrylate prepolymer (MCOG) was developed by mercapto castor oil (MCO) and glycidyl methacrylate (GMA) in this study through a two-step method. Primarily, the mercapto castor oil (MCO) was prepared through thiol-ene reaction of castor oil and mercaptoacetic acid, and subsequently an esterification reaction based on above product and glycidyl methacrylate (GMA) was conducted. FT-IR and 1H NMR spectra collectively revealed that MCOG was successfu...
#1Limin Man(SCAU: South China Agricultural University)H-Index: 7
#2Hu Yang(SCAU: South China Agricultural University)H-Index: 5
Last. Zhuohong Yang(SCAU: South China Agricultural University)H-Index: 15
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Abstract A novel bio-based methacrylate monomer (MEAM) derived from tung oil was synthesized through a two-step synthetic procedure involving amidation and esterification reactions. The chemical structure of MEAM was confirmed by proton nuclear magnetic resonance, Fourier transform infrared and gel permeation chromatography. Then, a series of tung oil-derived thermosets were produced by the polymerization of this methacrylate monomer with different contents of maleic anhydride (MA). The dynamic ...
#1Yechang Feng(SCAU: South China Agricultural University)H-Index: 6
#2Limin Man(SCAU: South China Agricultural University)H-Index: 7
Last. Zhuohong Yang(SCAU: South China Agricultural University)H-Index: 15
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Abstract Herein, castor and tung oil-based polyurethane-imides with tailored thermal and mechanical performance were developed by a one-pot method. First, tung oil (TO) was transformed into eleostearic acid diethanol amide (EADEA) by methyl-esterification and amidation. The resulting EADEA was then mixed with castor oil (CO), N-(2-hydroxyethyl)-maleimide (HEMI) and isophorone diisocyanate to prepare biobased polyurethane-imides. The formation of Diels-Alder (DA) adducts from EADEA and HEMI durin...
#1Liang Bin(SCAU: South China Agricultural University)H-Index: 4
#2Kuang Shaojie(SCAU: South China Agricultural University)H-Index: 1
Last. Teng Yuan(SCAU: South China Agricultural University)H-Index: 15
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Abstract With the rapid development of industry and the growing shortage of fossil energy, tung oil has attracted much attention of researchers because of its environment-friendly and renewable advantages. In this work, we successfully synthesized two kinds of tung-oil-derived renewable UV-curable active monomers, tung-acid-maleic tri-acrylate (TOAH) and tung-maleic tetra-acrylate (TMPG). 1H NMR and FT-IR results collectively revealed that the targeted active-monomers were successfully prepared....