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Article
The Influence of Biaxial Deformation and Annealing on Structure Development in Ternary Blends of PEN/PEI/PEEK
Polymer
  • Xixian Zhou
  • Mukerrem Cakmak
Document Type
Article
Publication Date
8-1-2006
Abstract
The effect of biaxial stretching and annealing on the structure development in ternary blends of PEN/PEI/PEEK on mostly PEN-rich compositions has been investigated. Both PEN and PEEK are melt miscible with PEI. The addition of PEI greatly suppresses the crystallizability of the PEN while enhancing the glass transition temperature. The addition of PEEK to high PEI containing PEN/PEI recovers this crystallizability with the end result being the high Tg materials that can strain harden. The crystallization habit is mostly PEN at PEN-rich corner of the ternary diagram. The increase of PEI concentration beyond 20% eliminates the crystallizability of PEN and addition of as little as 10% PEEK causes these blends to crystallize upon stretching in the rubbery state.
Citation Information
Xixian Zhou and Mukerrem Cakmak. "The Influence of Biaxial Deformation and Annealing on Structure Development in Ternary Blends of PEN/PEI/PEEK" Polymer Vol. 47 Iss. 18 (2006) p. 6362 - 6378
Available at: http://works.bepress.com/mukerrem_cakmak/34/