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

作　　者：S.Aslanzadeh R.Semnani Rahbar M.Nazi 

机构地区：[1]Department of Textile and Leather, Faculty of Chemistry and Petrochemical Engineering, Standard Research Institute (SRI)

出　　处：《Chinese Journal of Polymer Science》2014年第5期609-619,共11页高分子科学（英文版）

摘　　要：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 （λ〉 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-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 （λ〉 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.

关 键 词：PHOTO-OXIDATION POLYPROPYLENE Multifilarnent yams NANOCLAY UV radiation. 

分 类 号：TQ311[化学工程—高聚物工业]