DIPOLE-MOMENTS OF ISOTACTIC AND ATACTIC POLY(PROPYLENE OXIDE) SAMPLES

Date

1991-01-01

Author

KUCUKYAVUZ, Z
ALYURUK, K
AHMAD, AM

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Dipole moments of poly(propylene oxide) (PPO) samples with different tacticities were determined from dielectric constant and refractive index increment measurements, which were performed on dilute toluene and isooctane solutions. In contrast to previous reports, both refractive index increments and the dipole moment ratios showed a marked dependence on the tacticities of the samples. The dipole moment ratios of isotactic samples were greater than unity and decreased with increasing sequence concentrations of structural irregularities. The temperature coefficients in toluene were negative for both isotactic and atactic samples. No effect of excluded volume was observed.

Subject Keywords

Organic Chemistry, Polymers and Plastics

URI

https://hdl.handle.net/11511/67276

Journal

POLYMER

DOI

https://doi.org/10.1016/0032-3861(91)90464-t

Collections

Department of Chemistry, Article

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Citation Formats

Z. KUCUKYAVUZ, K. ALYURUK, and A. AHMAD, “DIPOLE-MOMENTS OF ISOTACTIC AND ATACTIC POLY(PROPYLENE OXIDE) SAMPLES,” POLYMER, pp. 564–568, 1991, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/67276.