Miscibility of poly(?-methyl styrene-co-methacrylic acid) with alkyl methacrylate-co-4-vinylpyridine copolymers

FT‐IR Spectroscopy and Hydrogen Bonding Interactions in Poly(styrene‐co‐methacrylic acid)/Poly(styrene‐co‐4‐vinyl pyridine) Blends

“…A composition effect is observed in this region. As previously reported, [7][8][9]13] this band centred at 2630 cm À1 for PSMA-15, shifts progressively to lower wavenumbers (up to 2515 cm…”

“…[6] We have in previous studies reported that depending on the solvent used, the nature and the densities of the specific groups introduced within the polymeric chains and the chain stiffness, miscibility blends or interpolymer complexes based were obtained. [7][8][9] Recently, Coleman et al [10] carried out a study of blends of poly(styrene-comethacrylic acid) containing 9 mol% of methacrylic acid and poly(styrene-co-2-vinylpyridine) containing 17 mol% of 2-vinylpyridine and showed that the specific interactions between the two constituents of the blends are of moderate strength and of hydrogen bonding type.…”

Hydrogen‐bonding interactions between poly(styrene‐co‐methacrylic acid) and poly(styrene‐co‐4‐vinylpyridine)

“…Figure 3 shows the scale-expanded infrared spectra of SMA-29 and of its blends with S4VP-15 in the 2700 -2200 cm Ϫ1 region. As we have previously reported with poly(␣-methyl styrene-co-methacrylic acid)/poly(butyl methacrylate-co-4-vinylpyridine) blends, 24 in addition to the broad band centered at around 2630 cm Ϫ1 , characteristic of COOH dimers observed with the acidic copolymer, a new band of increasing intensity appears at 2518 cm Ϫ1 as the basic S4VP copolymer is added to the blend, which is characteristic of carboxyl-pyridine interactions.…”