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Miscibility studies in blends of polybenzimidazoles and poly(4-vinyl pyridine)

✍ Scribed by S. Makhija; E. M. Pearce; T. K. Kwei; F. Liu

Book ID
104522733
Publisher
Society for Plastic Engineers
Year
1990
Tongue
English
Weight
327 KB
Volume
30
Category
Article
ISSN
0032-3888

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✦ Synopsis

Abstract

Poly[2,2'‐(m‐phenylene)‐5,5'‐bibenzimidazole] (PBI) is shown to be miscible with poly(4‐vinyl pyridine) over the entire composition range. Experiments were performed with commercial PBI as well as a lower molecular weight material synthesized by us. Blend miscibility is evidenced by single glass transition temperature intermediate between the pure polymers. Hydrogen bonding between the components was detected by infrared spectroscopy.

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## Abstract An analysis by differential scanning calorimetry, modulated differential scanning calorimetry, and Fourier transform infrared spectroscopy (FTIR) indicates that blends of poly(vinyl phenyl ketone) (PVPhK) and poly(4‐vinyl phenol) (P4VPh) are miscible at ambient temperature. Miscibility,