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Nylon Based Nanocomposites: Influence of Calcium Carbonate Nanoparticles on the Thermal Stability
Author(s) -
Avella Maurizio,
Carfagna Cosimo,
Cerruti Pierfrancesco,
Errico Maria Emanuela,
Gentile Gennaro
Publication year - 2006
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/masy.200650221
Subject(s) - thermogravimetric analysis , thermal stability , nanocomposite , calcium carbonate , thermal decomposition , materials science , nanoparticle , chemical engineering , nylon 6 , decomposition , chemistry , composite material , polymer , organic chemistry , nanotechnology , engineering
In this paper thermal and thermo‐oxidative stability of nylon 6 based nanocomposites containing up to 5% by weight of fatty acid coated calcium carbonate (CaCO 3 ) nanoparticles is studied. Thermal stability of compression‐moulded samples was evaluated by thermogravimetric analysis (TG) under air and nitrogen atmosphere. Kinetic analysis of TG data was performed by using the Flynn‐Wall‐Ozawa method. Results show that the presence of coated nanoparticles adversely affects the thermal and thermo‐oxidative stability of nylon 6. Kinetic analysis shows that a complex, multi‐step decomposition process occurs. Moreover, the presence of nanoparticles do not affect the rate limiting step of nylon 6 decomposition in air, while under nitrogen atmosphere the decomposition process occurs through a diffusion‐driven regime in presence of high amounts of CaCO 3 .