Aqueous anionic polyurethane dispersions from castor oil

Liang, Huaping; Wang, Shanwen; He, Heng; Wang, Mengqi; Liu, Lingxiao; Lu, Jingyi; Zhang, Yi; Zhang, Chaoqun

doi:10.1016/j.indcrop.2018.05.079

Cited by 90 publications

(42 citation statements)

References 27 publications

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“…Figure 2(3) shows the 1 H NMR of ECMR; the signals at around 5.35–5.61 ppm are protons of olefin, which originate from castor oil methyl ester. 30 More signals corresponding to the protons of methylene appear at around 1.4–2.2 ppm compared to CD, which originated from castor oil methyl ester. Compared with the FT-IR spectrum of CD and ECMA, as seen from Figure 2(6), the signal at 1729 cm –1 , which is attributed to ester groups, becomes stronger than CD, and the signal attributed to C–Cl at 735 cm –1 cannot be observed.…”

Section: Resultsmentioning

confidence: 98%

Designing Rosin-Based Plasticizers: Effect of Differently Branched Chains on Plasticization Performance and Solvent Resistance of Flexible Poly(vinyl chloride) Films

Jia

Zhang

et al. 2019

ACS Omega

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In the present study, we report a strategy to prepare rosin-based plasticizers with differently branched chains, which have the same benzene ring and similar alkane structure compared to phthalate plasticizers. Castor oil methyl ester, cardanol, and triethyl citrate were reacted with the chemical structure of rosin-based plasticizers. Rosin-based plasticizers with differently branched chains as alternative plasticizers for preparing phthalate-free flexible poly(vinyl chloride) films. All rosin-based plasticizers exhibited more excellent solvent extraction performance than phthalate plasticizers in four different solvents. The plasticizing efficiency of rosin-based plasticizers containing triethyl citrate groups reached 85.5%. The relationships between plasticizing efficiency, thermal stability, solvent resistance, tensile properties, and relative molecular mass of the branched chains of rosin-based plasticizers were investigated.

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Section: Resultsmentioning

confidence: 98%

Designing Rosin-Based Plasticizers: Effect of Differently Branched Chains on Plasticization Performance and Solvent Resistance of Flexible Poly(vinyl chloride) Films

Jia

Zhang

et al. 2019

ACS Omega

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“…All these materials are produced from petroleum-based compounds. To reduce dependence on petroleum resources, among them, polyols are the most likely to be replaced by biomass polyols derived from plants such as castor oil [ 4 , 5 ] and dimer acid-based derivatives [ 6 ]. Moreover, CO 2 -based polyols are another available resource [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Properties of Moisture-Cured Reactive Polyurethane Containing Castor Oil and Oxime Compounds

Wu¹

2020

Polymers

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Reactive polyurethane hot-melt resin (moisture-cured reactive polyurethane, PUR) could successfully be prepared from poly(tetramethylene ether) glycol (PTMG), castor oil and dimethylglyoxime (DMG) by one or two-stage synthesis. Fourier-transform infrared spectroscopy (FTIR) analysis showed that the synthesis resins belonged to NCO-capped castor oil-based polyurethane. The thermal behaviors of the cured PUR were analyzed by differential scanning calorimeter (DSC) and dynamic mechanical analyzer (DMA) instruments. The results showed that the cured resin provided remeltable properties under the dosages of 3 wt% DMG. Furthermore, the phenomenon could be proved by FTIR analysis according to the characteristic absorption peak of NCO groups after the cured resin was heated. Comparing different syntheses, the resin prepared by one-stage synthesis showed random distribution of DMG with PUR structure and that prepared by two-stage synthesis had distribution of DMG with branching structure in the prepolymer. The former obtained lower remeltable temperatures from 90 to 130 °C than the latter temperatures, which had temperatures above 125 °C. The tensile test showed that all of the PUR films exhibited typical tough behavior. Thus, the cured resin with DMG dosages of 3 wt% provided remeltable and mechanical properties at the same time. Overall, the crosslinking density and numbers of dynamic bonds should be kept in balance for preparation of remeltable PUR.

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“…Waterborne polyurethanes (WPUs) are a kind of widely used polymer material, synthesized by polyols, isocyanates, chain extenders, and hydrophilic monomers such as dimethylol propionic acid (DMPA) and dimethylol butanoic acid (DMBA) . The properties of WPUs are related to the synthetic formula.…”

Section: Introductionmentioning

confidence: 99%

“…The properties of WPUs are related to the synthetic formula. Many research studies have shown that the type and dosage of anionic emulsifier and extender have important effects on storage stability, centrifugal stability, and particle size of WPUs. More importantly, the ratio of NCO groups to OH groups, which called R value, also has vital effects.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of blocked waterborne polyurethane with 3,5‐dimethylpyrazole for industrial application in digital inkjet printing

Yin

Wang

Chen³

et al. 2019

J of Applied Polymer Sci

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In this article, a series of blocked waterborne polyurethanes (BWPUs) were synthesized by isophorone diisocyanate, polyols, dimethylol butanoic acid (DMBA), and 3,5-dimethylpyrazole. BWPUs were applied to digital inkjet printing of textiles. The successful synthesis and deblocking of BWPU were confirmed by Fourier transform infrared spectroscopy and differential scanning calorimetry. The colorfastness was improved by deblocking the terminal NCO groups at 140 C, which could react with fiber. This article presented a characterization method of filtering rate to evaluate the fluency of inkjet printing. Besides, the digital microscope was used to investigate the pigment transferred to the white test cloth. In the end, we chose poly(ethylene glycol adipate) 2000 as the polyol, 1,4-butanediol as the chain extender, 1.6 as the NCO/OH molar ratio, and 4% as the mass fraction of DMBA.

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Aqueous anionic polyurethane dispersions from castor oil

Cited by 90 publications

References 27 publications

Designing Rosin-Based Plasticizers: Effect of Differently Branched Chains on Plasticization Performance and Solvent Resistance of Flexible Poly(vinyl chloride) Films

Designing Rosin-Based Plasticizers: Effect of Differently Branched Chains on Plasticization Performance and Solvent Resistance of Flexible Poly(vinyl chloride) Films

Synthesis and Properties of Moisture-Cured Reactive Polyurethane Containing Castor Oil and Oxime Compounds

Synthesis of blocked waterborne polyurethane with 3,5‐dimethylpyrazole for industrial application in digital inkjet printing

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