Polyurethane dispersions derived from polycarbonatediols by a solvent‐free process

Lee, Da‐Kong; Tsai, Hong‐Bing; Yang, Zong‐Da; Tsai, Ruey‐Shi

doi:10.1002/app.36812

Cited by 23 publications

(7 citation statements)

References 23 publications

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“…Another green approach to materials synthesis is the removal or replacement of hazardous solvents and volatile organic compounds (VOCs) . Waterborne polyurethanes, or waterborne polyurethane dispersions (PUDs), are a widely investigated and represent an industrially prevalent class of segmented ion‐containing polyurethanes . PUDs function as excellent adhesives and coatings, imparting the properties of a segmented polyurethane in an easily applicable environmentally safe aqueous solution .…”

Section: Ion‐containing Biobased Polyols and Waterborne Polyurethane mentioning

confidence: 99%

Synthesis, Properties, and Applications of Ion‐Containing Polyurethane Segmented Copolymers

Nelson

Long

2014

Macro Chemistry & Physics

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Despite the well-established foundation of polyurethane chemistry in both industry and academia, research continues at a vigorous pace to refi ne synthetic processes and discover new functional materials. Incorporating ionic groups into polymers is a synthetic parameter capable of tailoring polymer properties and enabling emerging technologies. This review focuses on recent effort in the fi eld of ion-containing segmented polyurethane copolymers. Multiple synthetic strategies to incorporate both cationic and anionic sites, including a particular focus on waterborne polyurethane dispersions and green synthetic methods, are examined. Fundamental structure-property relationships based on ionic structure, content, and placement are explored and many applications, including biomedical products and polymer electrolytes for energy devices are discussed.(PEG) or poly(tetramethylene oxide) (PTMO), to the polyurethane reaction. The hydrogen bonding, depicted in Figure 1 , between the urethane carbonyl oxygen and urethane hydrogen, coupled with crystallization, constructs the hard segment (HS) domains, while the functionalized fl exible spacers comprise the soft segments (SSs) in an alternating fashion. The microphase-separated morphology of segmented polyurethanes is the foundation for their versatility, with the ability to further tune materials for a specifi c application with other synthetic parameters such as chemical composition and molecular weight. Yilgör and co-workers, [ 5 ] Yurtsever and co-workers, [ 6 ] and Wilkes and co-workers [ 7 ] extensively studied various model segmented polyurethane systems to further understand the morphology and factors infl uencing morphology on a fundamental structure-property level.Many comprehensive reviews and peer-reviewed journal articles focus on fundamental structure-property relationships of segmented polyurethanes.

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Section: Ion‐containing Biobased Polyols and Waterborne Polyurethane mentioning

confidence: 99%

Synthesis, Properties, and Applications of Ion‐Containing Polyurethane Segmented Copolymers

Nelson

Long

2014

Macro Chemistry & Physics

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“…Application of waterborne coatings is an inevitable trend since more and more government legislation forces the coating industry to reduce emissions of volatiles organic compounds (VOCs) . Among waterborne coatings, waterborne UV‐curable coatings have gained much attention recently because they possess the combined characteristics of UV‐curing technology and waterborne materials, such as fast and mild curing conditions, environmental friendly, etc .…”

Section: Introductionmentioning

confidence: 99%

“…Among waterborne coatings, waterborne UV‐curable coatings have gained much attention recently because they possess the combined characteristics of UV‐curing technology and waterborne materials, such as fast and mild curing conditions, environmental friendly, etc . Waterborne UV‐curable polyurethane is becoming the most commonly used material in waterborne UV‐curable coatings since it possesses excellent versatility and comprehensive performance …”

Section: Introductionmentioning

confidence: 99%

Preparation and performance of waterborne UV‐curable polyurethane containing long fluorinated side chains

Tan

Liu

Wang

2016

J of Applied Polymer Sci

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Novel waterborne UV-curable polyurethane containing long fluorinated side chains (WUVFPU) was prepared and the fluorinated component was incorporated by two novel fluorinated macromolecular diols (FDO) with different chain length as chain extender. FDO was synthesized via free radical polymerization of hexafluorobutyl methacrylate (HFBMA) using 1-thioglycerol (TG) as chain transfer agent. Extremely low dosage of FDO incorporated could change the surface property significantly. The influence of both the content and chain length of FDO on the surface energy, surface composition and morphology were investigated by contact angle measurement, XPS and AFM. Surface energy significantly decreased at extremely low concentration of FDO. The hydrophobicity was enhanced with increasing both the content and the chain length of FDO. XPS and AFM results revealed the enhancing hydrophobicity was attributed to the enrichment of F atoms and rougher surface morphology. Gel content, pencil hardness, adhesion, and optical transmittance tests were employed to investigate the coating properties of the UV-cured films. The preparation and investigation of WUVFPU might provide better understanding of the influence of fluorinated chain length on the properties of polyurethane for theory. Moreover, it might provide a facile and effective route to prepare polyurethane materials with low surface energy for engineering and industry.

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“…Polycarbonate‐based (PC) polyols which constitute the soft segments are a relatively new class of materials in the field of polyurethanes . They are known to provide good weathering, fungi, and hydrolysis resistance and are at the same time highly biocompatible materials .…”

Section: Introductionmentioning

confidence: 99%

“…They are known to provide good weathering, fungi, and hydrolysis resistance and are at the same time highly biocompatible materials . Until now, just a few studies of polycarbonates used as the soft segment components for the PUD preparation have been published . However, in all these studies, the multifunctional chain extenders such as ethylenediamine, diethylenetriamine, or hydrazine were used which gave rise to branched or chemically cross‐linked polymer structures …”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of thermoplastic water‐borne polycarbonate‐based polyurethane dispersions and cast films

Serkis

Poręba

Hodan

et al. 2015

J of Applied Polymer Sci

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Stable water-borne polyurethane dispersions (PUDs) were prepared from bifunctional aliphatic polycarbonate-based macrodiol, 2,2-bis(hydroxymethyl)propionic acid (DMPA), 1,6-diisocyanatohexane, 1,4-butanediol (BD), and triethylamine. Water-borne dispersion particles are thus solely formed from self-assembled linear PU chains. Both PUDs and PUD-based films were characterized with regards to the concentration of DMPA (ionic species content) and BD (hard-segment content). Average particle size of PUDs decreased and their long-term stability increased with increasing DMPA and decreasing BD concentration. Functional properties of cast films made from PUDs are substantially influenced by the character of the original colloidal particle dispersions. The swelling behavior of the films, their surface morphology, and mechanical properties are more influenced by DMPA than BD contents. At DMPA concentrations higher than 0.2 mmol g 21 of the solid mass of polyurethane, distinct self-organization of individual nanoparticles into fibril-like structures was detected by atomic force microscopy and scanning electron microscopy. PU films made from PUD containing high BD as well as high DMPA concentrations have the best utility properties namely sufficient tensile properties and a very low swelling ability.

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Polyurethane dispersions derived from polycarbonatediols by a solvent‐free process

Cited by 23 publications

References 23 publications

Synthesis, Properties, and Applications of Ion‐Containing Polyurethane Segmented Copolymers

Synthesis, Properties, and Applications of Ion‐Containing Polyurethane Segmented Copolymers

Preparation and performance of waterborne UV‐curable polyurethane containing long fluorinated side chains

Preparation and characterization of thermoplastic water‐borne polycarbonate‐based polyurethane dispersions and cast films

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