Synthesis and characterization of polycaprolactone-based segmented polyurethanes

Date

2019-01-01

Author

Guney, Aysun
Kızıltay, Aysel
Hasırcı, Nesrin
Endoğan Tanır, Tuğba

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Segmented polyurethanes were synthesized by the reactions of poly(epsilon-caprolactone) (PCL)-diol and 1,6-hexamethylene diisocyanate through bulk polymerization without using solvent, initiator, or catalyst. Phase separation and hydrogen bond formation between hard segments or between hard and soft segments were examined by Fourier transform infrared spectroscopy (FTIR)-ATR and X-ray diffraction (XRD), while physical and mechanical properties were studied by atomic force microscope, differential scanning calorimeter, dynamic mechanical analysis, and tensile tester. When the diisocyanate content was increased, deconvolution results of FTIR-ATR in C = O and N-H regions demonstrated better miscibility of the segments and XRD results showed a significant decrease in the crystallinity of soft segments. Samples having strong hard segment interactions displayed better mechanical properties.

Subject Keywords

Segmented polyurethanes, poly(epsilon-caprolactone)-diol, Hard segment, Phase segregation, Deconvolutionv

URI

https://hdl.handle.net/11511/30280

Journal

TURKISH JOURNAL OF CHEMISTRY

DOI

https://doi.org/10.3906/kim-1801-44

Collections

Graduate School of Natural and Applied Sciences, Article

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Citation Formats

A. Guney, A. Kızıltay, N. Hasırcı, and T. Endoğan Tanır, “Synthesis and characterization of polycaprolactone-based segmented polyurethanes,” TURKISH JOURNAL OF CHEMISTRY, pp. 452–463, 2019, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/30280.