Swelling kinetics and characterization of novel superabsorbent polymer composite based on mung bean starch-filled poly(acrylic acid)-graft-waste polystyrene

• Published in: International journal of plastics technology Vol. 23; no. 2; pp. 188 - 194
• Main Authors: Deraman, Nurul Fasiha, Mohamed, Nur Raihan, Romli, Ahmad Zafir
• Format: Journal Article
• Language: English
• Published: New Delhi Springer India 01.12.2019; Springer Nature B.V
• Subjects: Acrylics; Ammonium peroxodisulfate; Chemistry; Chemistry and Materials Science; Crosslinking; Emulsion polymerization; Fourier transforms; Grafting; Materials Science; Methylene bisacrylamide; Polyacrylic acid; Polymer matrix composites; Polymer Sciences; Polymers; Polystyrene resins; Research Article; Stability analysis; Superabsorbent polymers; Swelling; Thermal stability; Thermogravimetric analysis; Mung bean starch; Waste polystyrene; Superabsorbent polymer composite; Polyacrylic acid
• ISSN: 0972-656X; 0975-072X
• DOI: 10.1007/s12588-019-09232-9

A novel superabsorbent polymer composite based on mung bean starch was prepared via emulsion polymerization technique of partially neutralized acrylic acid grafted onto waste polystyrene chain using ammonium persulfate and N , N ′-methylenebisacrylamide as initiator and crosslinker, respectively. Fourier transform infrared confirmed the presence of mung bean starch in the grafting of polyacrylic acid and waste polystyrene. The introduction of starch in superabsorbent polymer greatly enhanced the swelling capacity with the optimum absorbency recorded at 59.3 g/g for 20% of starch loading. Meanwhile, thermogravimetric analysis showed enhance in thermal stability upon incorporation of mung bean starch.