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Well‐Controlled Biodegradable Nanocomposite Foams: From Microcellular to Nanocellular
Author(s) -
Fujimoto Youhei,
Ray Suprakas Sinha,
Okamoto Masami,
Ogami Akinobu,
Yamada Kazunobu,
Ueda Kazue
Publication year - 2003
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/marc.200390068
Subject(s) - materials science , nanocomposite , autoclave , silicate , composite material , supercritical fluid , nanometre , biodegradable polymer , supercritical carbon dioxide , polymer , rheology , chemical engineering , chemistry , organic chemistry , engineering , metallurgy
Via a batch process in an autoclave, the foam processing of neat polylactide (PLA) and two different types of PLA/layered silicate nanocomposites has been conducted using supercritical carbon dioxide as a foaming agent. The morphological correlation between the dispersed silicate particles with nanometer dimensions in the bulk and the obtained closed‐cell structure of the foam is discussed. This is the first report that deals with the possibility of preparing biodegradable nanocellular polymeric foams via nanocomposite technology.SEM image of the freeze‐fracture surface of a PLA/layered silicate foam, exhibiting closed‐cell structure.