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Self-healing properties of poly(ethylene-co-vinyl acetate)
- Source :
- Colloid and Polymer Science. 294:537-543
- Publication Year :
- 2015
- Publisher :
- Springer Science and Business Media LLC, 2015.
-
Abstract
- Poly(ethylene-co-vinyl acetate) with 42 wt% of vinyl acetate shows autonomic self-healing at room temperature without macroscopic flow. Intermolecular diffusion of amorphous chains through the jointed boundary, which occurs because of the large amount of amorphous chains with low glass transition temperature, is responsible for the healing phenomenon. Furthermore, the healing efficiency is found to be enhanced when the separated pieces are recombined immediately after cutting. This result indicates that the cut surface has marked molecular mobility owing to the destruction of crystallites during the cutting process, which is supported by differential scanning calorimetry (DSC) measurements. The marked molecular mobility at the surface is, however, observed only for a short period after cutting, because further crystallization after cutting restricts the molecular motion.
- Subjects :
- Materials science
Polymers and Plastics
Diffusion
02 engineering and technology
010402 general chemistry
01 natural sciences
law.invention
chemistry.chemical_compound
Crystallinity
Colloid and Surface Chemistry
Differential scanning calorimetry
law
Materials Chemistry
Vinyl acetate
self-healing
Physical and Theoretical Chemistry
Crystallization
Composite material
crystallinity
ethylene-co-vinyl acetate copolymer
021001 nanoscience & nanotechnology
0104 chemical sciences
Amorphous solid
chemistry
rheology
Crystallite
0210 nano-technology
Glass transition
Subjects
Details
- ISSN :
- 14351536 and 0303402X
- Volume :
- 294
- Database :
- OpenAIRE
- Journal :
- Colloid and Polymer Science
- Accession number :
- edsair.doi.dedup.....026bf58b50a1910e48e0264bd8a591d9