Polyurethanes with narrow- and polydisperse hard segment distributions

D. De, R.J. Gaymans

Research output: Contribution to journalArticleAcademicpeer-review

5 Citations (Scopus)

Abstract

Polyurethanes with narrow-disperse (ND) and polydisperse (PD) hard segment (HS) distributions were prepared in a two-step process. First, a poly(propylene oxide) end-capped with MDI (4,4methylenebis(phenyl isocyanate) was synthesized. To this prepolymer either a diamine-diamide was added to form ND HSs or a mixture of a diamine-diamide and additional MDI to form PD HSs in the copolymers. The polyurethanes displayed a ribbon-like crystalline morphology, and it was found that the copolymers with ND HSs were more crystalline, had a higher modulus, a less temperature-dependant modulus, and a higher melting temperature than their PD counterparts. Overall, the polyurethanes with the narrow-dispersed HSs displayed superior properties.
Original languageUndefined
Pages (from-to)887-894
JournalMacromolecular materials and engineering
Volume293
Issue number11
DOIs
Publication statusPublished - 2008

Keywords

  • IR-68973
  • METIS-254527

Cite this

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Polyurethanes with narrow- and polydisperse hard segment distributions. / De, D.; Gaymans, R.J.

In: Macromolecular materials and engineering, Vol. 293, No. 11, 2008, p. 887-894.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Polyurethanes with narrow- and polydisperse hard segment distributions

AU - De, D.

AU - Gaymans, R.J.

PY - 2008

Y1 - 2008

N2 - Polyurethanes with narrow-disperse (ND) and polydisperse (PD) hard segment (HS) distributions were prepared in a two-step process. First, a poly(propylene oxide) end-capped with MDI (4,4methylenebis(phenyl isocyanate) was synthesized. To this prepolymer either a diamine-diamide was added to form ND HSs or a mixture of a diamine-diamide and additional MDI to form PD HSs in the copolymers. The polyurethanes displayed a ribbon-like crystalline morphology, and it was found that the copolymers with ND HSs were more crystalline, had a higher modulus, a less temperature-dependant modulus, and a higher melting temperature than their PD counterparts. Overall, the polyurethanes with the narrow-dispersed HSs displayed superior properties.

AB - Polyurethanes with narrow-disperse (ND) and polydisperse (PD) hard segment (HS) distributions were prepared in a two-step process. First, a poly(propylene oxide) end-capped with MDI (4,4methylenebis(phenyl isocyanate) was synthesized. To this prepolymer either a diamine-diamide was added to form ND HSs or a mixture of a diamine-diamide and additional MDI to form PD HSs in the copolymers. The polyurethanes displayed a ribbon-like crystalline morphology, and it was found that the copolymers with ND HSs were more crystalline, had a higher modulus, a less temperature-dependant modulus, and a higher melting temperature than their PD counterparts. Overall, the polyurethanes with the narrow-dispersed HSs displayed superior properties.

KW - IR-68973

KW - METIS-254527

U2 - 10.1002/mame.200800147

DO - 10.1002/mame.200800147

M3 - Article

VL - 293

SP - 887

EP - 894

JO - Macromolecular materials and engineering

JF - Macromolecular materials and engineering

SN - 1438-7492

IS - 11

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