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Thermal Behaviour of Poly(propylene) Layered Silicate Nanocomposites
Author(s) -
Zanetti Marco,
Camino Giovanni,
Reichert Peter,
Mülhaupt Rolf
Publication year - 2001
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(200102)22:3<176::aid-marc176>3.0.co;2-c
Subject(s) - organoclay , nanocomposite , thermogravimetry , silicate , materials science , thermal decomposition , chemical engineering , polymer , protonation , amine gas treating , montmorillonite , polymer chemistry , composite material , organic chemistry , chemistry , ion , engineering
The thermal degradation behaviour of nanocomposites based upon poly(propylene)/organoclay, modified with protonated octadecyl amine (C18) in comparison to that of non‐exfoliated microcomposites based upon organoclay, modified with protonated butyl amine (C4), was studied by thermogravimetry. In the case of the nanocomposite, the temperature at which volatilisation occurs increases as compared of the microcomposite. Moreover, the thermal oxidation process of the polymer is strongly slowed down in the nanocomposite with high char yield both by a physical barrier effect, enhanced by ablative reassembling of the silicate, and by a chemical catalytic action due to the silicate and to the strongly acid sites created by thermal decomposition of the protonated amine silicate modifier.