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Structure and Properties of Nanocomposites Based on Poly(butylene succinate‐ co ‐adipate) and Organically Modified Montmorillonite
Author(s) -
Ray Suprakas Sinha,
Bousmina Mosto,
Okamoto Kazuaki
Publication year - 2005
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/mame.200500203
Subject(s) - materials science , nanocomposite , montmorillonite , crystallinity , adipate , elongation , dynamic mechanical analysis , ultimate tensile strength , composite material , polybutylene succinate , extrusion , organoclay , polymer
Summary: Poly(butylene succinate‐ co ‐adipate) (PBSA) and organically modified montmorillonite (OMMT) nanocomposites of three different compositions were prepared by melt‐extrusion in a batch mixer. The structure of the nanocomposites was studied using X‐ray diffraction (XRD) and transmission electron microscopy (TEM) that revealed a coexistence of exfoliated and intercalated silicate layers dispersed in the PBSA matrix, regardless of the silicate loading. The degree of crystallinity of PBSA decreases with the addition of OMMT platelets. Dynamic mechanical analysis revealed remarkable increase in flexural storage modulus when compared with that of neat PBSA. Tensile property measurements exhibit substantial increase in stiffness with simultaneous increase in elongation at break of nanocomposites as compared to that of neat PBSA. The effect of clay loading on the melt‐state linear viscoelastic behavior of mixed intercalated/exfoliated nanocomposites was also investigated.Elongation at break of compression molded annealed samples of neat PBSA and various PBSACNs.