Mechanical properties of clay-polyimide (BTDA-ODA) nanocomposites via ODA-modified organoclay

Horng Long Tyan, Kung-Hwa Wei, Tsung-Eong Hsien

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Clay-polyimide [3,3′, 4,4′-benzophenone tetracarboxylic dianhydride-4,4′-oxydianiline (BTDA-ODA)] nanocomposites were synthesized from ODA-modified montmorillonite (organoclay) and poly(amic acid). The layered silicates of organoclay were intercalated by polyimide (BTDA-ODA), as confirmed by X-ray diffraction and by transmission electron microscopy, and the tensile mechanical properties of the nanocomposites were measured. It was found that the modulus and the maximum stress of these organoclay/BTDA-ODA nanocomposites were much higher than those of pure BTDA-ODA: a twofold increase in the modulus and a one-half-fold increase in the maximum stress in the case of 7/93 organoclay-BTDA-ODA. In addition, the elongation-for-break of organoclay/BTDA-ODA nanocomposites is even slightly higher than that of pure BTDA-ODA, which is a sharp contrast to that of conventional inorganics-filled polymer composites.

Original languageEnglish
Pages (from-to)2873-2878
Number of pages6
JournalJournal of Polymer Science, Part B: Polymer Physics
Issue number22
StatePublished - 15 Nov 2000

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