Citation: S. Aslanzadeh, R. Semnani Rahbar and M. Nazi. Accelerating Role of Clay in Photo-Oxidation of Polypropylene/Clay Multifilament Yarns[J]. Chinese Journal of Polymer Science, ;2014, 32(5): 609-619. doi: 10.1007/s10118-014-1426-9 shu

Accelerating Role of Clay in Photo-Oxidation of Polypropylene/Clay Multifilament Yarns

S. Aslanzadeh ¹ ,
R. Semnani Rahbar and M. Nazi ¹

1.
Department of Textile and Leather, Faculty of Chemistry and Petrochemical Engineering, Standard Research Institute (SRI), Karaj, P.O. Box 31745-139, Iran

Received Date: 23 July 2013
Revised Date: 9 October 2013

Photo-oxidative degradation of polypropylene/clay multifilament yarns containing different amounts of clay was investigated. These samples and pure polypropylene (PP) multifilametns were exposed to long wavelength radiations ( 300 nm) under atmospheric condition of constant temperature and relative humidity. The photo-oxidative stability was studied using FTIR spectroscopy, tensile testing and microscopy. The results indicate that the addition of clay particles decreases the stability of PP/clay composites to photo-oxidative degradation according to comparison with pure PP. From FTIR study and tensile properties, it was also found that the multifilaments with higher clay loading reveals a faster loss of mechanical properties, higher photo-oxidative product formation and more reduction in the induction time of photo-oxidation. Moreover, the crack formation on surface of irradiated filaments corresponds well to the conclusions in tensile properties and FTIR characterization.
- Photo-oxidation,
- Polypropylene,
- Multifilament yarns,
- Nanoclay,
- UV radiation
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