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- Title
Multiple Shape-Memory Behavior of Polyethylene/Polycyclooctene Blends Cross-Linked by Electron Irradiation.
- Authors
Radusch, Hans-Joachim; Kolesov, Igor; Gohs, Uwe; Heinrich, Gert
- Abstract
Covalent networks prepared by electron irradiation of binary and ternary blends of linear and/or short-chain branched polyethylenes as well as polycyclooctene (polyoctenamer) demonstrate distinctly developed triple- and partly quadruple shape-memory (SM) behavior after one-step programming. Blends having the morphology with well-segregated phases, where the matrix has the lower melting/switching temperature in comparison to the disperse phases, evince pronounced steps of SM recovery and modulus as well as distinct differential scanning calorimetry-melting peaks. Phase morphology and especially phase separation in networks are noticeably affected by thermal history of blends before cross-linking. All investigated networks show high SM performances with strain fixing and strain recovery ratios of 95-99%.
- Publication
Macromolecular Materials & Engineering, 2012, Vol 297, Issue 12, p1225
- ISSN
1438-7492
- Publication type
Article
- DOI
10.1002/mame.201200204