Preparation of Fully Bio-Based UV-Cured Non-Isocyanate Polyurethanes From Ricinoleic Acid

Cheng, Chuanjie; Zhang, Xu; Huang, Qiwen; Dou, Xiaoqing; Li, Jin; Cao, Xingxing; Tu, Yuanming

doi:10.1080/10601325.2015.1029374

Cited by 20 publications

(9 citation statements)

References 34 publications

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“…49 Ricinoleic acid-derived primary amide was oxidized in situ to isocyanate intermediate by an organic oxidant iodosobenzene, which subsequently self-condensed resulting in PHUs with M n = 1300 g/mol. 50 Studies are available where PHUs of higher M n (>5000 g/mol) were reported via different methods. PHUs of higher molecular weight (9200–13 500 g/mol) were produced by the reaction of diglyceroldicarbonate (DGC) with different amines such as butane-1,4-diamine (BDA), pentane-1,5-diamine, nonane-1,9-diamine, and dimerized fatty acid diamine.…”

Section: Resultsmentioning

confidence: 99%

“…Recent studies focus mainly to understand polymer synthesis and properties of resultant PHU polymers − (Figure ). In 2018, two interesting works were reported with fascinating reworkable properties on PHUs. , PHU-containing acetal group undergoes acid-catalyzed reversibility in solvents. , By using cystamine as comonomer, reprocessable PHUs were achieved at 150 °C .…”

Section: Introductionmentioning

confidence: 99%

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Hybrid Poly(hydroxy urethane)s: Folded-Sheet Morphology and Thermoreversible Adhesion

et al. 2019

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Hybrid poly(hydroxy urethane)s (PHUs) are synthesized by copolymerizing aromatic/alicyclic cyclic carbonates with a polyether amine via addition polymerization. They result into polymers with an average molecular weight of 10 kDa and exhibit solubility in common organic solvents. The hybrid PHUs display T g up to 18 °C. PHUs are enriched with multiple H-bonded interactions and they are assessed using temperature-dependent 1 H NMR and Fourier-transform infrared studies. PHUs possess folded-sheet morphology with nanogap between folds and nanowidth between chains. The secondary interactions bestow thermoreversible property to PHUs, and they display good adhesion to both polar (Al–Al) and nonpolar (HDPE–HDPE) substrates. Hybrid PHUs show improved optical transparency compared to homo PHUs. The PHUs are thermally stable up to 250 °C.

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Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hybrid Poly(hydroxy urethane)s: Folded-Sheet Morphology and Thermoreversible Adhesion

et al. 2019

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“…Ultraviolet (UV) curing technology has become a hot spot for researchers in the past twenty years due to its instant curing, high efficiency, environmental friendliness, and unique advantages of adjustable curing coating properties (from brittle to very soft films) [1][2][3][4] . Comparing with traditional coatings, UV-curable coatings can save energy and reduce the content of volatile organic compounds [5,6] .…”

Section: Introductionmentioning

confidence: 99%

Synthesis of 1,1,3,3,5,5-hexamethyl-1,5-bis[(3-ethyl-3-methoxyoxetane)propyl]trisiloxane and Research on Its UV-curing Performance

Huang

Chen

2021

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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A compound,, was synthesized with diethyl carbonate and trihydroxypropane as raw materials, 3-ethyl-3-allylmethoxy oxetane (EAMO) was synthesized with EHO and allyl bromide, and 1,1,3,3,5,5-hexamethyl-1,5-bis [(3-ethyl-3-methoxyoxetane)propyl]trisiloxane (HMBEMOPTS) was synthesized with EAMO and 1,1,3,3,5,5-hexamethyltrisiloxane (HMTS). HMBEMOPTS is a novel UV-curable oligomer. The test of photo-DSC shows the photosensitivity of HMBEMOPTS is better than the ordinary oxetane, 3-ethyl-3-[(3-ethyloxetan-3-yl)methoxymethyl]oxetane. HMBEMOPTS was mixed with bisphenol A type epoxy resin E-51 to prepare a cationic UV-curable system, and triarylsulfonium hexafluoroantimonate (UV-6976) was used as a cationic photoinitiator. The mechanical tests of coating films prove that when the mass fraction of HMBEMOPTS is 50%, the mechanical properties of the curing system are the best. The impact strength of the UV-curable films is measured to be 40 kg•cm and the flexibility is 2 mm; the tensile strength and flexural strength of the prepared specimens are 20.74 MPa and 13.43 MPa, respectively. The experimental results show that HMBEMOPTS can effectively improve photosensitivity and flexibility of the photosensitive resin.

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“…Ultraviolet (UV)-cured coatings have drawn much attention because of their advantages such as environment friendliness, rapid curing rates, and optimized energy consumption [1][2][3][4][5][6]. UV-cured polyurethane (PU) is widely used in coatings to improve the appearance, lifespan, and corrosion resistance of products [7][8][9].…”

Section: Introductionmentioning

confidence: 99%

UV-Cured Coatings Prepared with Sulfhydryl-Terminated Branched Polyurethane and Allyl-Terminated Hyperbranched Polycarbosilane

Jiao

Zhang²,

Cheng

et al. 2020

Coatings

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The conventional polyurethane (PU) coatings have poor heat resistance, which will undergo severe pyrolysis when the temperature exceeds 200 °C. To overcome the shortcoming of conventional PU coatings, an ultraviolet (UV)-cured solvent-free hyperbranched polycarbosilane modified PU coatings was prepared by sulfhydryl-terminated polyurethane and allyl-terminated hyperbranched polycarbosilane. The initial decomposition temperature (Td5%) of the UV-cured coating ranges from 258 to 268 °C, which is obviously higher than those of the conventional PU coatings reported. The coating shows fairly low water absorption in the range of 0.6–1.36 wt% and exhibits grade 1, grade 2 and grade 3 adhesion to glass, tin plate and aluminum sheet, respectively.

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Preparation of Fully Bio-Based UV-Cured Non-Isocyanate Polyurethanes From Ricinoleic Acid

Cited by 20 publications

References 34 publications

Hybrid Poly(hydroxy urethane)s: Folded-Sheet Morphology and Thermoreversible Adhesion

Hybrid Poly(hydroxy urethane)s: Folded-Sheet Morphology and Thermoreversible Adhesion

Synthesis of 1,1,3,3,5,5-hexamethyl-1,5-bis[(3-ethyl-3-methoxyoxetane)propyl]trisiloxane and Research on Its UV-curing Performance

UV-Cured Coatings Prepared with Sulfhydryl-Terminated Branched Polyurethane and Allyl-Terminated Hyperbranched Polycarbosilane

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