1. Effect of beta irradiation on the structural changes of isotactic polypropylene
- Author
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F. Rybnikar, D. Maňas, M. Kaszonyiová, and M. Kubisova
- Subjects
Materials science ,Polymers and Plastics ,Metals and Alloys ,structure and properties ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,0104 chemical sciences ,Tacticity ,beta-irradiation ,isotactic polypropylene crystal modifications ,Beta irradiation ,sense organs ,Composite material ,0210 nano-technology - Abstract
The electron β-irradiation of isotactic polypropylene (iPP) influenced the sample chemical structure because it mostly caused the crosslinking of the polymer chains beside the macromolecule degradation. The irradiation effect led to the corresponding changes in physical properties (crystallinity, crystal size, melting and crystallisation temperatures). The amount of the β-phase in the samples decreased with the increasing β-irradiation dose, changing into the α - and amorphous phase. After the irradiation, the iPP melting and crystallisation temperatures decreased, and the spherulitic structure was partially decomposed. The imbibition of boiling xylene proved that the highest degree of crosslinking took place in the samples irradiated with a dose of 33 kGy, showing the highest crystallinity and melting temperature., IGA/FT/2017/002, Tomas Bata University in Zlin [IGA/FT/2017/002]
- Published
- 2018
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