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Preparation of PVC‐clay nanocomposites by solution blending
Author(s) -
Wang Dongyan,
Wilkie Charles A.
Publication year - 2002
Publication title -
journal of vinyl and additive technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.295
H-Index - 35
eISSN - 1548-0585
pISSN - 1083-5601
DOI - 10.1002/vnl.10369
Subject(s) - montmorillonite , nanocomposite , thermogravimetric analysis , materials science , polymer , ultimate tensile strength , transmission electron microscopy , degradation (telecommunications) , composite material , polymer clay , char , modulus , chemical engineering , nanotechnology , pyrolysis , telecommunications , computer science , engineering
Abstract PVC‐clay nanocomposites have been prepared by solution blending of the polymer with both sodium montmorillonite and an organically modified clay. The nanocomposites have been characterized by X‐ray diffraction and transmission electron microscopy; in all cases the materials are best described as mixed immiscible—intercalated nanocomposites, Thermogravimetric analysis shows that, in some cases, the onset temperature of the degradation is enhanced, and the fraction of nonvolatile residue is always decreased. This decrease in the amount of char indicates a significant change in the degradation pathway of the polymer, caused by the presence of the clay. For some preparations, the tensile strength and modulus are enhanced, in agreement with the formation of a partially intercalated structure.