A Study on the Structure of Novel Polyurethanes Derived from γ-Valerolactone-Based Diol Precursors

Mochamad Chalid; Hans J. Heeres; Antonius A. Broekhuis

doi:10.4028/www.scientific.net/AMR.789.274

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 789A Study on the Structure of Novel Polyurethanes...

A Study on the Structure of Novel Polyurethanes Derived from γ-Valerolactone-Based Diol Precursors

Abstract:

As versatile biomass-based diol precursors, N,N'-1,2-ethanediylbis-(4-hydroxy-pentanamide) (1) and 4-hydroxy-N-(2-hydroxyethyl)-pentanamide (2) are potential monomers to synthesize novel polyurethanes through adding di-isocyanates. This study reported the structural analysis and molecular behavior of polyurethanes obtained from polymerization of the diol precursors with aliphatic and aromatic di-isocyanates (hexamethylene diisocyanate, HDI (3), and phenyl-diisocyanate, PDI (4)) in (N,N-dimethylacetamide (DMA) solvents with triethylamine (TEA) catalysts. ¹H-NMR, ¹³C-NMR and Elemental Analysis confirmed structure of the polyurethanes built from both diols and di-isocyanates and FTIR indicated interaction among polyurethane molecules showed at lower wave numbers such as 2855-2976 cm^-1 for hydrogen-bonded NH groups and 1621-1643 cm^-1 for hydrogen-bonded C=O groups. Furthermore a study on influence of the inter-and intra-molecular hydrogen bonding on the thermal and mechanical properties of the polyurethanes would be an interesting investigation for the next study.

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Advanced Materials Research (Volume 789)

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274-278

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.789.274

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Online since:

September 2013

Authors:

Mochamad Chalid, Hans J. Heeres, Antonius A. Broekhuis

Keywords:

Backbone Structure, Di-Isocyanates, Diols, Functional Groups, Hydrogen Bonding

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