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Use of Pristine Clay Platelets as a Suspension Stabilizer for the Synthesis of Poly(methyl methacrylate)/Clay Nanocomposites
Author(s) -
Khatana Shyam,
Dhibar Anup Kumar,
Sinha Ray Suprakas,
Khatua Bhanu Bhusan
Publication year - 2009
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200900119
Subject(s) - nanocomposite , thermal stability , materials science , methyl methacrylate , polymer chemistry , glass transition , stabilizer (aeronautics) , composite number , polymerization , suspension (topology) , montmorillonite , methacrylate , chemical engineering , polymer , composite material , mechanical engineering , mathematics , homotopy , pure mathematics , engineering
The role of Na + ‐mmt platelets as a stabilizer during the suspension polymerization of MMA is described. The addition of a small amount of Na + ‐mmt into the system without suspension stabilizer results in the formation of spherical beads of PMMA/Na + ‐mmt nanocomposites with uniform sizes, whereas in the presence of o‐mmt, it resulted in the formation of PMMA/o‐mmt composite clusters. FT‐IR spectroscopy reveals a strong interaction between the PMMA carbonyl groups with the clay surface in the PMMA/Na + ‐mmt nanocomposite. DSC results indicate a significant increase in the glass transition temperature of PMMA in the PMMA/Na + ‐mmt nanocomposite as compared to that of the PMMA/o‐mmt nanocomposite. The thermal stability of PMMA is also increased in the case of the PMMA/Na + ‐mmt nanocomposite.