TY - GEN
T1 - A study on the structure of novel polyurethanes derived from γ-valerolactone-based diol precursors
AU - Chalid, Mochamad
AU - Heeres, Hans J.
AU - Broekhuis, Antonius A.
PY - 2013
Y1 - 2013
N2 - As versatile biomass-based diol precursors, N,N'-1,2-ethanediylbis-(4-hydroxypentanamide) (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 hydrogenbonded -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.
AB - As versatile biomass-based diol precursors, N,N'-1,2-ethanediylbis-(4-hydroxypentanamide) (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 hydrogenbonded -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.
KW - Backbone structure
KW - Di-isocyanates
KW - Diols
KW - Functional groups and hydrogen bonding
UR - http://www.scopus.com/inward/record.url?scp=84886263418&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/AMR.789.274
DO - 10.4028/www.scientific.net/AMR.789.274
M3 - Conference contribution
AN - SCOPUS:84886263418
SN - 9783037857571
T3 - Advanced Materials Research
SP - 274
EP - 278
BT - Advances in Materials, Processing and Manufacturing
T2 - 13th International Conference on Quality in Research, QiR 2013
Y2 - 25 June 2013 through 28 June 2013
ER -