Stereochemical effects on the mechanical and viscoelastic properties of renewable polyurethanes derived from isohexides and hydroxymethylfurfural

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发布日期 2017-07-24

DOI 10.1039/C7PY00949F

影响因子 5.582

作者

Robert J. Kieber, III, Samantha A. Silver, Justin G. Kennemur

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摘要

Biomass-derived polyurethanes were synthesized using 2,5-bishydroxymethylfuran (BHMF) and diisocyanate functionalized isohexides, isosorbide bis(3-isocyanatopropanoate) (ISBIP) and isomannide bis(3-isocyanatopropanoate) (IMBIP), at varying feed ratios. PU compositions accurately reflect the feed of ISBIP and IMBIP used as determined by NMR spectroscopy and polarimetry measurements. Differential scanning calorimetry, pycnometry, tensile testing, and rheology reveal that the isosorbide versus isomannide content within the PU effects the glass transition temperature, density, and entanglement molar mass ultimately resulting in different mechanical properties at similar molar mass. Other properties, such as thermal stability and amorphous character, remain similar. The isohexide isomer effects on properties are discussed.

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来源期刊

Polymer Chemistry

CiteScore: 8.6

自引率: 7.3%

年发文量: 457

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.

Stereochemical effects on the mechanical and viscoelastic properties of renewable polyurethanes derived from isohexides and hydroxymethylfurfural

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