Premium
Miscibility of Polyoxymethylene Blends as Revealed by High‐resolution Solid‐state 13 C‐NMR Spectroscopy
Author(s) -
Matsumoto Akiko,
Egawa Yuichiro,
Matsumoto Toshihiro,
Horii Fumitaka
Publication year - 1997
Publication title -
polymers for advanced technologies
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.61
H-Index - 90
eISSN - 1099-1581
pISSN - 1042-7147
DOI - 10.1002/(sici)1099-1581(199704)8:4<250::aid-pat636>3.0.co;2-9
Subject(s) - miscibility , materials science , spin diffusion , magic angle spinning , solid state nuclear magnetic resonance , polyoxymethylene , hydrogen bond , nuclear magnetic resonance spectroscopy , phase (matter) , fourier transform infrared spectroscopy , spectroscopy , nuclear magnetic resonance , analytical chemistry (journal) , diffusion , molecule , chemistry , polymer , organic chemistry , chemical engineering , thermodynamics , physics , quantum mechanics , engineering , composite material
The miscibility of polyvinylphenol (PVPh) or terpenephenol (TPh) with polyoxymethylene (POM) was examined by high‐resolution solid‐state 13 C nuclear magnetic resonance (NMR) spectroscopy. It was found that the driving force for the mixing of POM and PVPh is the hydrogen‐bonding interaction between the phenolic OH group of PVPh and the ether oxygen of POM, and that the mixing is preferentially induced in the noncrystalline phase. 1 H relaxation time experiments indicated that POM/PVPh blends were homogeneous on a scale of 20–30 nm but heterogeneous on a scale of 2–3 nm. On the other hand, Fourier transform infrared and cross‐polarization/magic‐angle‐spinning 13 C‐NMR (nuclear magnetic resonance) spectra revealed that POM and TPh are also mixed in the noncrystalline phase through the intermolecular hydrogen‐bonding interaction, while some fraction of POM is still crystallizable. Moreover, the domain size of the micro‐phase separation was estimated to be about 1 nm by the direct 1 H spin‐diffusion measurements, suggesting almost homogeneous mixing on a molecular level in the noncrystalline phase. © 1997 John Wiley & Sons, Ltd.