Correlation of Raw Materials and Waterborne Polyurethane Properties by Sequence Similarity Analysis

Zhou, Xing; Fang, Changqing; Chen, Jing; Li, Shujuan; Li, Yan; Lei, Wanqing

doi:10.1016/j.jmst.2016.02.006

Cited by 22 publications

(8 citation statements)

References 27 publications

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“…The results of model tests obtained on the basis of anionomer properties analysis based on PPG, IPDI and DMPA revealed that DMPA ionic reagent is crucial to obtain specific properties, such as solids content, viscosity, acid number and electrolytic stability of the PUDs [5]. It has also been demonstrated that the stability of PUDs increases with higher hydrophilic.…”

Section: Waterborne Polyurethane Compositionsmentioning

confidence: 99%

“…Those groups allow forming dispersions and emulsions in water, which was previously considered as unfavorable and even hostile to the classical methods of polyurethane synthesis. Due to versatile application and excellent properties of ionomers, they were employed in a wide range of fields such as coating, adhesive, ink, building materials, automotive, textile and biomaterials [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

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Structures, properties and applications of the polyurethane ionomers

Król

2019

J Mater Sci

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On the basis of the reports from 2010 to 2018, the chemical structure, production methods and applications of polyurethane ionomers were reviewed. The paper presents ionogenic reagents and counterions responsible for the incorporation of anionic and cationic groups into polyurethane chains and the resulting physicochemical properties of these polymers. The most important applications of synthesized ionomers as a waterborne polyurethane, elastomer materials, biomaterials and materials for special applications (electronics, nanocomposites) were presented. Abbreviations PUPolyurethane PUI Polyurethane ionomer PUD Polyurethane dispersion WPU Waterborne polyurethane HMDI 4,4 0 -Methylene bis(cyclohexyl isocyanate) MDI 4,4 0 -Methylenebis(phenyl isocyanate) HDI 1,6-Hexamethylene diisocyanate IPDI Isophorone diisocyanate PTMO Polytetramethylene glycol PCD Polycarbonate diol POG Polyethylene glycol PPG Polypropylene glycol PCL Poly(e-caprolactone) diol PLA Polylactide diol PDMS Poly(dimethylsiloxane) DMPA 2,2-Bis(hydroxymethyl)propionic acid DMBA 2,2-Bis(hydroxymethyl)butyric acid

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Section: Waterborne Polyurethane Compositionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Structures, properties and applications of the polyurethane ionomers

Król

2019

J Mater Sci

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“…Since water at ca. 20 °C (common room temperature) is normally used in waterborne polyurethane synthesis, the WPU sample (W-WPU1) obtained from 20 °C water was used as the point of comparison to represent the normal and general bulk structure and nanoparticle morphology 26 27 .…”

Section: Methodsmentioning

confidence: 99%

Various nanoparticle morphologies and surface properties of waterborne polyurethane controlled by water

Zhou

Fang

Lei

et al. 2016

Sci Rep

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Water plays important roles in organic reactions such as polyurethane synthesis, and the aqueous solution environment affects polymer morphology and other properties. This paper focuses on the morphology and surface properties of waterborne polyurethane resulting from the organic reaction in water involving different forms (solid and liquid), temperatures and aqueous solutions. We provide evidence from TEM observations that the appearance of polyurethane nanoparticles in aqueous solutions presents diverse forms, including imperfect spheres, perfect spheres, perfect and homogenous spheres and tubes. Based on the results on FTIR, GPC, AFM and XRD experiments, we suggest that the shape of the nanoparticles may be decided by the crimp degree (i.e., the degree of polyurethane chains intertangling in the water environment) and order degree, which are determined by the molecular weight (Mn) and hydrogen bonds. Meanwhile, solid water and high-temperature water can both reduce hard segments that gather on the polyurethane film surface to reduce hydrophilic groups and produce a soft surface. Our findings show that water may play key roles in aqueous polymer formation and bring order to molecular chains.

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“…The stretching peaks at 1,716 and 1,645 cm −1 correspond to the urea hydrogen bonded disordered carbonyl group and urethane hydrogen bonded disordered carbonyl group, respectively. The bands at around 1,242 and 1,101 cm −1 are assigned to the COC with urethane and polyol groups, which are relate to the soft‐segment behavior . Meanwhile, the bands at 1,199, 873–1,013, and 730 cm −1 are assigned to the COC vibrations of ester functional groups within the hard‐segment phase, the bending vibrations of the methylene group and CO wagging vibration .…”

Section: Resultsmentioning

confidence: 99%

Dispersion of multiwalled carbon nanotubes in waterborne polyurethane emulsions derived from alcoholysis products of waste PET and its effect on properties

Fang

Yang

2018

Polymer Engineering & Sci

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Composite emulsions of waterborne polyurethane (WPU) with multiwalled carbon nanotube (MWCNTs) have been synthesized successfully. Waterborne polyurethane emulsions were synthesized from the alcoholysis products of waste poly(ethylene terephthalate) (PET). Carbon nanotubes were treated with concentrated acid, to have better compatibility in waterborne polyurethane. Thermal properties show that the introduction of carbon nanotubes enhances the thermal stability of WPU matrix. However, a further increment of the content of MWCNTs from 0.3 to 0.5% causes a reduction. When the content of MWCNTs increases from 0.5% to 2%, the thermal stability of waterborne polyurethane samples enhances, which is related to the steric hindrance effect of MWCNTs. The dispersion of MWCNTs is the best for waterborne polyurethane with 0.3% MWCNTs. X‐ray diffraction tests show the introduction of MWCNTs does not change the crystallographic structure of the WPU matrix. Visual examination, TEM images, and UV/Vis absorption spectrum prove that partial carbon nanotubes have been dispersed homogenously in the waterborne polyurethane matrix. The dispersion of MWCNTs is the worst for waterborne polyurethane sample with 2% MWCNTs in three samples. Water absorption tests show that carbon nanotubes can decrease the water absorption. POLYM. ENG. SCI., 58:2149–2155, 2018. © 2018 Society of Plastics Engineers

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Correlation of Raw Materials and Waterborne Polyurethane Properties by Sequence Similarity Analysis

Cited by 22 publications

References 27 publications

Structures, properties and applications of the polyurethane ionomers

Structures, properties and applications of the polyurethane ionomers

Various nanoparticle morphologies and surface properties of waterborne polyurethane controlled by water

Dispersion of multiwalled carbon nanotubes in waterborne polyurethane emulsions derived from alcoholysis products of waste PET and its effect on properties

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