Characterization of polyurethane elastomers by 13C n.m.r. spectroscopy

Delides, C.G.; Pethrick, Richard A.; Cûnliffe, A.V.; Klein, P. G.

doi:10.1016/0032-3861(81)90133-6

Cited by 54 publications

(17 citation statements)

References 10 publications

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“…While a number of studies have focused on the NMR analysis of polyurethanes and their starting materials, [33][34][35] very few NMR experiments have specifically dealt with waterborne polyurethanes, [36] and there are good reasons for that. WB 2K-PUR dispersions are formulated without the use of organic solvents.…”

Section: Resultsmentioning

confidence: 98%

Dynamic colloidal processes in waterborne two-component polyurethanes and their effects on solution and film morphology

Otts

Pereira

Jarret

et al. 2005

Polymer

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Section: Resultsmentioning

confidence: 98%

Dynamic colloidal processes in waterborne two-component polyurethanes and their effects on solution and film morphology

Otts

Pereira

Jarret

et al. 2005

Polymer

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“…2. The assignments have been made in this work by drawing analogy from the ␤-CD/TDI assignments, from spectra of related MDI polymers in the literature (Brandolini & Hills, 2000;Delides, Tethrick, Cunliffe, & Klein, 1981), and from 13 C shift additivity rules (Cheng & Kasehagen, 1994); these are shown directly on Fig. 2.…”

Section: Nmr Analysismentioning

confidence: 99%

Microwave-assisted synthesis of cyclodextrin polyurethanes

Biswas

Appell

Liu

et al. 2015

Carbohydrate Polymers

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“…The polyol (1000 g) was heated to 60-80°C to reduce viscosity and outgassed at about 50 mm Hg. The vacuum was then adjusted to 10 mm Hg and heating increased to effect fractionation and continued until the desired pot temperature was reached. The residue and distillate were weighed and analyzed.…”

Section: Molecular Weight Advancement Proceduresmentioning

confidence: 99%

Polyurethane elastomers based on molecular weight advanced poly(ethylene ether carbonate) diols. I. Comparison to commercial diols

Harris

Joseph

Davidson

et al. 1990

J of Applied Polymer Sci

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SynopsisPoly(ethy1ene ether carbonate) diols (2025 mol w t ) have been made by the molecular weight advancement of lower molecular weight oligomers and have been fabricated into polyurethane elastomers by reaction with 4,4'-MDI and 1,4-butanediol using the prepolymer method. Polymer structure has been delineated by carbon-13 NMR. Comparisons have been made to a series of elastomers based on other polyester and polyether polyols (2000 mol w t ) under conditions where the only variable was the soft segment structure. The poly( ethylene ether carbonate) diol gives a polymer with a partially phase mixed morphology, a higher ambient temperature modulus, and a lower AHm than the other polyester polyols. This lower AHm leads to a significantly lower rubbery plateau modulus than the other polyester polyols. Phase mixing is increased by post-curing at 150°C. Organic solvent resistance is the most outstanding property. The poly (ethylene ether carbonate) diol produces a polymer with predominantly polyester polyol features.

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Characterization of polyurethane elastomers by 13C n.m.r. spectroscopy

Cited by 54 publications

References 10 publications

Dynamic colloidal processes in waterborne two-component polyurethanes and their effects on solution and film morphology

Dynamic colloidal processes in waterborne two-component polyurethanes and their effects on solution and film morphology

Microwave-assisted synthesis of cyclodextrin polyurethanes

Polyurethane elastomers based on molecular weight advanced poly(ethylene ether carbonate) diols. I. Comparison to commercial diols

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