Characterization of polyurethane networks structure and properties based on rapeseed oil derived polyol

Fridrihsone, Anda; Stirna, U. K.; Lazdiņa, Brigita; Misane, M. M.; Vilsone, Dzintra

doi:10.1016/j.eurpolymj.2013.03.012

Cited by 62 publications

(46 citation statements)

References 25 publications

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“…As shown in Table , T 5% first increased and then decreased with increasing TMPM content. The decrease was due to the fact that the substantial long nonpolar aliphatic dangling chains were capable of screening the polar groups and thereby decreased the hydrogen‐bonding interactions between the polymer main chains and intermolecular attractions …”

Section: Resultsmentioning

confidence: 99%

Synthesis and adhesion properties of waterborne polyurethane dispersions with long‐branched aliphatic chains

Liu

Xia

Lin

et al. 2014

J of Applied Polymer Sci

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In this study, a series of waterborne polyurethanes (WPUs) with different contents of long-branched aliphatic chains were synthesized through variation of the amount of diol chain extender trimethylol propane monooleate (TMPM). The effects of the TMPM content on the adhesion properties of the WPUs were investigated in terms of their surface tension, interfacial tension, contact angle, and adhesion strength. Fourier transform infrared and 1 H-NMR spectra demonstrated the successful incorporation of TMPM into the polyurethanes. An increase in the TMPM content produced decreases in the surface tension of the WPUs and the interfacial tension and contact angle between the WPUs and plastic films. This indicated that the wetting properties of the WPUs on the plastic films was improved. The improved wettability enhanced the adhesion strength of the WPUs, and this showed that the long-branched aliphatic chains could effectively improve the adhesion performance of the WPUs on the plastic films. Moreover, TMPM, with its hydrophobic aliphatic chains, increased the hydrophobicity and thermal stability of the WPU films.

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Section: Resultsmentioning

confidence: 99%

Synthesis and adhesion properties of waterborne polyurethane dispersions with long‐branched aliphatic chains

Liu

Xia

Lin

et al. 2014

J of Applied Polymer Sci

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“…In these poly mer structures, the urethane NH is the H-bond donor, while the C O in the caprolactone segments and urethane bonds are H-bond acceptors. [ 18,28 ] H-bonding may affect numerous properties of the polymer including the crystallization process. The presence of this bond-type ( N H ˙˙˙ O C) can well be demonstrated by AT-FTIR.…”

Section: Chemical Characterization Of Linear and Crosslinked Pusmentioning

confidence: 99%

Poly(ε‐caprolactone) and Pluronic Diol‐Containing Segmented Polyurethanes for Shape Memory Performance

Czifrák

Karger‐Kocsis

Daróczi

et al. 2014

Macro Chemistry & Physics

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A series of novel segmented linear and crosslinked polyurethanes (PUs) are synthesized from poly(ε-caprolactone) (PCL) (25 kg mol −1 ), methylene diphenyl diisocyanate (MDI), and various polyether diols (Pluronic (PLU) and polyethylene glycol (PEG)). The basic structures of the highly deformable PUs are PLU/PEG-MDI-PCL-MDI-PLU/PEG and PLU-MDI-PCL-MDI-PLU, respectively. The linear and crosslinked PUs are characterized. Changes in the tensile behavior are attributed to the effects of compositional variables and alterations in the crosslink density. Additional information on the morphology of the segmented PUs is deduced from differential scanning calorimetry, as well as transmission and scanning electron microscopy investigations. Both the linear and the crosslinked PUs exhibit a broad rubbery plateau above the melting temperature of the crystalline PCL phase, which is highly benefi cial for shape memory function. This work highlights that the chemical build-up of soft segments containing high-molecular-weight crystallizable chain units is a proper tool to tailor the morphology and mechanical properties of PUs, and thus also their shape memory properties.

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“…Nowadays, special emphasis is put on eco‐friendly activities, and much research has been devoted to the synthesis of polyols from so‐called renewable raw materials, i.e. derivatives of vegetable oils (rapeseed oil, sunflower oil, palm oil, coconut oil, soybean oil). They are esters of glycerol and higher unsaturated fatty acids.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of rigid polyurethane foams with carbamide and borate groups

Zarzyka

2016

Polymer International

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The results of research on the application of hydroxyethyl urea derivatives modified with boron as polyol components to produce foamed polyurethane materials are presented. The obtained rigid polyurethane foams are characterized by good heat-insulating parameters and decreased flammability. The decrease in flammability of the foams follows from the presence of boron and increased nitrogen content, resulting from the use of polyol with urea groups. The incorporation of boron into the foam structure also results in a substantial increase in the compression strength, compared to classic foams and to non-boron-modified ones. The self-extinguishing foams of high mechanical strength can find application as heat-insulating construction elements for the building industry.

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Characterization of polyurethane networks structure and properties based on rapeseed oil derived polyol

Cited by 62 publications

References 25 publications

Synthesis and adhesion properties of waterborne polyurethane dispersions with long‐branched aliphatic chains

Synthesis and adhesion properties of waterborne polyurethane dispersions with long‐branched aliphatic chains

Poly(ε‐caprolactone) and Pluronic Diol‐Containing Segmented Polyurethanes for Shape Memory Performance

Preparation and characterization of rigid polyurethane foams with carbamide and borate groups

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