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Structure and Properties of PHA/Clay Nano‐Biocomposites Prepared by Melt Intercalation
Author(s) -
Bordes Perrine,
Pollet Eric,
Bourbigot Serge,
Avérous Luc
Publication year - 2008
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.200800022
Subject(s) - intercalation (chemistry) , small angle x ray scattering , materials science , chemical engineering , nano , crystallization , polymer , dispersion (optics) , polymer chemistry , composite material , chemistry , organic chemistry , scattering , physics , optics , engineering
PHA‐based nano‐biocomposites have been prepared by melt intercalation. Two main PHAs, poly(hydroxybutyrate) and poly(hydroxybutyrate ‐co‐ hydroxyvalerate) have been studied. Structural characterizations were conducted by advanced techniques like SAXS and TEM. A recent method has determined the degree of clay intercalation and dispersion using solid‐state NMR. Well intercalated small tactoids (3–10 layers) homogeneously dispersed into the polymer are obtained when good PHA–clay affinity exists, i.e., with organo‐modified MMT. In the case of non‐modified MMT, microcomposites are evidenced. Crystallization, mechanical, and thermal properties have been correlated to the materials structures.