Search results for "Renewable materials"

showing 2 items of 2 documents

Low-Q peak in X-ray patterns of choline-phenylalanine and homophenylalanine: a combined effect of chain and stacking

2016

Abstract In this contribution we report for the first time the X-ray patterns of choline-phenylalanine and choline-homophenylalanine ionic liquids. The presence of a low Q peak in both systems is another evidence that a long alkyl chain is not always needed to establish a nanodomain segregation in the liquid sufficient to be revealed by the diffraction experiment. These new data are compared with the diffraction patterns and the theoretical calculations of other choline-aminoacid ionic liquids recently reported. A significant role might be played by the stacking interactions between aromatic rings.

DiffractionChemical substancePhenylalanineStackingGeneral Physics and AstronomyPhenylalanine02 engineering and technologyIonic liquid010402 general chemistry01 natural sciencesCholinePhysics and Astronomy (all)chemistry.chemical_compoundAminoacidSettore CHIM/02Organic chemistryPhysical and Theoretical ChemistryAlkylcholine-amino acid ionic liquids EDXD; ion pairs; pre-peak; renewable materialschemistry.chemical_classificationSmall-angle X-ray scatteringSAXS; Choline; Phenylalanine; Aminoacids; Ionic liquidsAromaticitySAXS021001 nanoscience & nanotechnologyIonic liquids0104 chemical sciencesCrystallographychemistryIonic liquid0210 nano-technologyAminoacids
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Fracture Toughness of PIR Foams Produced from Renewable Resources

2012

Rigid low-density closed-cell polyisocyanurate (PIR) foams are used primarily as a thermal insulation material. Traditionally, they are manufactured from constituents produced by petrochemical industry. Introducing renewable materials in PIR formulation brings definite economical and environmental benefits. Fracture toughness of PIR foams obtained from renewable resources (with the polyol system comprising up to 80% of rapeseed oil esters) and petrochemical PIR foams has been characterized experimentally, by compact tension tests, for mode I crack propagation along the rise direction of the foams.

Renewable materialsbusiness.product_categoryMaterials sciencebusiness.industryMechanical EngineeringPolyisocyanurateFracture mechanicsPetrochemicalFracture toughnessMechanics of MaterialsThermal insulationGeneral Materials ScienceComposite materialbusinessRenewable resourceKey Engineering Materials
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