Synthesis and Characterization of Poly(styrene)-block-Poly(acrylic acid) and Organoclay Based Hybrid Composite Materials

S. H. Soomro, M. Sanaullah, N. Zaman, A. Q. Laghari, N. B. Jalbani, K. Mirza, E. A. Abbasi

Abstract


Abstract—Polystyrene (PS) and polyacrylic acid (PAA) are organic and synthetic polymers. Generally, a composite needs a matrix and reinforcement. Montmorillonite (MMT) is used as reinforcement to form a hybrid matrix by ultra-sonication. Block polymers of PS and PAA were first synthesized and then hybrid nanocomposite material of synthesized block polymeric matrix was fabricated by incorporating organoclay as reinforcement through 6 and 12 hours of ultra-sonication. The characterizations of the hybrid nanocomposite material were done by UV-visible and infrared (IR) spectroscopy, which confirm the successful synthesis of PS and PAA block polymer. The UV-visible spectroscopic measurements revealed that hybrid composite material is different from PS-block-PAA and that absorbance increases on increasing concentration. After successful ultra-sonication the hybrid composite is analyzed through scan electron microscopy (SEM) regarding surface morphology, distribution, uniformity, porosity, matrix compatibility, and matrix reinforcements. Sonication (for 6 hours) demonstrates a heterogeneous porous surface and an increase in roughness and porosity of surface morphology at different optical zooms.


Keywords


poly(acrylic acid); poly(styrene); block polymer; montmorillonite (MMT); exfoliation

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