Miscibility in binary blends of poly(vinyl phenol) and poly(n-alkylene 2,6-naphthalates)

Abstract

We have performed Fourier transform infrared (FTIR) spectroscopy and differential scanning calorimetry (DSC) studies on blends of poly(vinyl phenol) (PVPh) with poly(n-alkylene 2,6-naphthalates) containing alkylene units of different lengths. The results indicate that each poly(ethylene 2,6-naphthalate) (PEN) and poly(trimethylene 2,6-naphthalate) (PTN) blend with PVPh is immiscible or partially miscible, but blends of poly(butylene 2,6-naphthalate) (PBN) with PVPh are miscible over the whole range of compositions in the amorphous state. FTIR spectroscopic analysis confirmed that significant degree of intermolecular hydrogen bonding occurs between the PBN ester carbonyl groups and the PVPh hydroxyl groups. The large difference in the degree of mixing in these blend systems is described in terms of the effect that chain mobility has on the accessibility of the ester carbonyl functional groups toward the hydroxyl groups of PVPh, which in turn impacts the miscibility of these blends.

Effects of PP-g-MAH on the Mechanical, morphological and rheological properties of polypropylene and poly(acrylonitrile-butadiene-styrene) blends

“…However, most of the polymer blends are found to be incompatible. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] These incompatible polymer blends have poor mechanical and physical properties. In order to improve the mechanical properties of the polymer blends, the compatibilizer has been widely used.…”

Poly(naphthalates)

“…PEN can also be used to prepare high-strength fibers useful for the manufacture of tire cord. 72 In blends of PBN and poly(ether imide) (PEI), one single T g was observed. This property makes them suitable for manufacturing for food and beverage containers.…”