Specific interactions in poly(styrene‐co‐2‐hydroxyethyl acrylate)/poly(styrene‐co‐N,N‐dimethylacrylamide) systems

Abstract

Amphiphilic copolymers of poly(styrene-co-2-hydroxyethyl acrylate) (SHEA) and poly(styrene-co-N, Ndimethylacrylamide) (SAD) of different compositions were prepared by free radical copolymerization and characterized by different techniques. Depending on the nature of the solvent and the densities of interacting species incorporated within the polystyrene matrices, novel materials as blends or interpolymer complexes with properties different from those of their constituents were elaborated when these copolymers are mixed together. The specific interpolymer interactions of hydrogen bonding type and the phase behavior of the elaborated materials were investigated by differential scanning calorimetry (DSC) and Fourier transform infra red spectroscopy (FTIR). The specific interactions of hydrogen bonding type that occurred within the SHEA and within their blends with the SAD were evidenced by FTIR qualitatively by the appearance of a new band at 1626 cm À1 and quantitatively using appropriate spectral curve fitting in the carbonyl and amide regions. The variation of the glass transition temperature with the blend composition behaved differently with the densities of interacting species. The thermal degradation behavior of the materials was studied by thermogravimetry.

Effects of a phosphorus compound on the morphology, thermal properties, and flammability of polystyrene/MgAl‐layered double hydroxide nanocomposites

“…This may be rationally interpreted as follows. The first, the AEPPA may interact with the LDH by a formation of hydrogen bonds between the carbonyl groups in AEPPA structure and hydroxyl groups in LDH layers [18], which facilitates the AEPPA penetration inside the galleries of LDH. The second, because of the phenyl group and hydrocarbon chain on the AEPPA, the molecule is compatible with styrene sufficiently.…”