Abstract
Poly(p-vinylphenol) (PVPh) is miscible with poly(N-methyl-3-piperidinemethyl methacrylate) (PM3PMA). The glass transition temperatures of the blends are higher than those calculated from a linear additivity rule. Fourier transform infrared spectroscopy shows the existence of hydrogen-bonding interactions between the hydroxyl groups of PVPh and the carbonyl groups of PM3PMA. In addition, X-ray photoelectron spectroscopy shows that the piperidine nitrogen atoms of PM3PMA also interact with the hydroxyl groups of PVPh as show by the development of a high-binding-energy N 1s peak in each blend. In contrast, we have earlier reported that thet piperidine nitrogen atoms of poly(N-methyl-4-piperidyl methacrylate) are not involved in hydrogen-bonding interactions withPVPh. To better understand the interactions in various blends, ab initio calculations were performed onhydrogen-bonded dimers of saturated monomers.
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