Please use this identifier to cite or link to this item:
Title: Miscibility of poly(ethyl oxazoline)/poly(4-vinylphenol) blends as investigated by the high-resolution solid-state13C NMR
Authors: Wang, J
Cheung, MK
Mi, Y
Keywords: Poly(4-vinylphenol)
Poly(ethyl oxazoline)
Polymer blends
Issue Date: 2001
Publisher: Elsevier
Source: Polymer, 2001, v. 42, no. 5, p. 2077-2083 How to cite?
Journal: Polymer (United Kingdom) 
Abstract: The miscibility of poly(ethyl oxazoline) (PEOx) and poly(4-vinylphenol) (PVPh) blends were investigated by differential scanning calorimeter (DSC), Fourier-transform infrared spectroscopy (FTIR), and high-resolution solid-state nuclear magnetic resonance (NMR) spectroscopy. It was found that PEOx was miscible with PVPh as shown by the existence of single composition-dependent glass transition temperature (Tg) in the whole composition range. FTIR results revealed strong hydrogen bonding between the carbonyl groups of PEOx and the hydroxyl groups of PVPh. 13C cross-polarization (CP)/magic angle spinning (MAS)/dipolar decoupling (DD) spectra of the blends showed significant chemical shift changes, which support the FTIR results. The proton spin-lattice relaxation times in both the laboratory frame, T1(H), and the rotating frame, T1ρ(H), were studied as a function of blend composition, and blends gave values longer than pure polymers. The T1(H) results are in good agreement with the thermal analysis; i.e. the blends are completely homogenous on the scale of 30-40 nm. The T1ρ(H) results further indicate that the blends were homogenous on the scale of 2-3 nm.
ISSN: 0032-3861
EISSN: 1873-2291
Appears in Collections:Journal/Magazine Article

View full-text via PolyU eLinks SFX Query
Show full item record


Last Week
Last month
Citations as of Aug 16, 2018

Page view(s)

Last Week
Last month
Citations as of Aug 12, 2018

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.