SYNTHESIS AND PROPERTIES OF POLY(MAA-co-AL)/MMT NANOCOMPOSITE

Water-soluble poly(methacrylic acid(MAA)-co-acraldehyde(AL))/montmorillonite(MMT)(poly(MAA-co-AL)/MMT) nanocomposites were prepared using Na + -montmorillonite(Na + -MMT)via in-situ polymerization of methacrylic acid(MAA)and acraldehyde(AL)in aqueous medium.The resulting poly(MAA-co-AL)/MMT nanocomposites were characterized by X-ray diffrac- tion,transmission electron microscope,Fourier transform infrared spectroscopy,and thermo-gravimetric analysis.Polymer molecules and clay particles interacted with each other.Moreover,methacrylic acid and acraldehyde were polymerized in the MMT in- ter-lamellar.The nanocomposite formed could be categorized as an exfoliated nanocomposite.It exhibites more than 20℃im- provement in thermal degradation temperature,compared to the unmodified polymer counterpart.The improved properties of colla- gen treated with 6%(in mass,the same below)nanocomposites associated with 2%chromate are shown,in contrast to the collagen only treated with chromate.Furthermore,the chrome content of waste liquids decreases by more than 50%.