A facile co-solvent-free process for waterborne polyurethane preparation

Sun, Hui; Chen, Dajun

doi:10.1007/s00289-018-2304-3

Cited by 12 publications

(7 citation statements)

References 20 publications

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“…∆B is defined as the interval temperature during the glass transition (Table 3), and used to determine the difference in the degree of micro phase separation for the samples that consist of various diols. The results show that samples containing PTMG have a lower ∆B than ester and carbonate‐based diol and indicates a greater DPS 31–33,38 . The absence of carbonyl groups in ether‐based diol cause less hydrogen bonding between soft–hard segments than for ester or/and carbonate‐based diol.…”

Section: Resultsmentioning

confidence: 91%

“…The results show that samples containing PTMG have a lower ΔB than ester and carbonate-based diol and indicates a greater DPS. [31][32][33]38 The absence of carbonyl groups in etherbased diol cause less hydrogen bonding between softhard segments than for ester or/and carbonate-based diol. Weakened interaction between soft and hard segments increases micro phase separation.…”

Section: Dps = a Bondedmentioning

confidence: 99%

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Synthetic scheme to increase the abrasion resistance of waterborne polyurethane–urea by controlling micro‐phase separation

Chen

Zhuang

Chuang

et al. 2021

J of Applied Polymer Sci

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As an environmental-friendly coating material in industry, waterborne polyurethane-urea (WPU) is still not comparable with solvent-based polyurethane (SPU) in mechanical properties, due to the hydrophilic chain-extender. Herein, a synthetic scheme to increase the abrasion resistance of WPU with ether diol, and conventional hydrophilic chain-extender (DMBA, 2,2-bis [hydroxymethyl]butanoic acid) is revealed. This study discuss the degree of micro-phase separation (DPS) with toughness, elongation, abrasion resistance, and compared with the WPU contain various types of diol, such as esters, ether and carbonates, and the ether-based SPU. From the results, the major factor that affect to the abrasion properties of WPU is DPS, which is highly depend on the chemical structure of diol, and hard segment content. WPU film achieve higher toughness with ether-based diol with higher DPS, and better abrasion resistance than SPU. This study demonstrate a strategy for the composition designing, and the synthesis of high-abrasion resistance WPU by controlling the micro-phase separation, and content of DMBA without any inorganic fillers.

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Section: Resultsmentioning

confidence: 91%

Section: Dps = a Bondedmentioning

confidence: 99%

Synthetic scheme to increase the abrasion resistance of waterborne polyurethane–urea by controlling micro‐phase separation

Chen

Zhuang

Chuang

et al. 2021

J of Applied Polymer Sci

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“…By adding bisphenol A diglycidyl ether into the prepolymer a hybrid was obtained which has good mechanical properties, a Tg-49,1 ºC and a good thermal stability [63]. Applying a low melting point chain extender, the raw components being 1,4-butanediol and dimethyl propionic acid a study showed that with the decrease of the ratio of dimethyl propionic acid/1,4butanediol the mechanical properties of the PU decreased [64].…”

Section: Compositesmentioning

confidence: 99%

Polyurethane: Recent Engineering Contributions

Feldman

2020

AJOP

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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%

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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A facile co-solvent-free process for waterborne polyurethane preparation

Cited by 12 publications

References 20 publications

Synthetic scheme to increase the abrasion resistance of waterborne polyurethane–urea by controlling micro‐phase separation

Synthetic scheme to increase the abrasion resistance of waterborne polyurethane–urea by controlling micro‐phase separation

Polyurethane: Recent Engineering Contributions

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

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