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- Title
Chemical Cross-linking of Polypropylenes Towards New Shape Memory Polymers.
- Authors
Raidt, Thomas; Hoeher, Robin; Katzenberg, Frank; Tiller, Joerg C.
- Abstract
In this work, syndiotactic polypropylene (sPP) as well as isotactic polypropylene (iPP) are cross-linked to gain a shape memory effect. Both prepared PP networks exhibit maximum strains of 700%, stored strains of up to 680%, and recoveries of nearly 100%. While x-iPP is stable for many cycles, x-sPP ruptures after the first shape-memory cycle. It is shown by wide-angle X-ray scattering (WAXS) experiments that cross-linked iPP exhibits homoepitaxy in the temporary, stretched shape but in contrast to previous reports it contains a higher amount of daughter than mother crystals.
- Subjects
CROSSLINKING (Polymerization); POLYPROPYLENE; HOMOEPITAXY; SHAPE memory polymers; X-ray scattering
- Publication
Macromolecular Rapid Communications, 2015, Vol 36, Issue 8, p744
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.201400727