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  Sci. Lett. J. 2016, 5: 238  
  Research Article
  Full Text
Effect of ferric stearate and ferric 12-hydroxy stearate on the photodegradability of polypropylene – natural and artificial weathering studies  
  K. Rajakumara, C. T. Vijayakumarb  
     
a Department of Chemistry, Kamaraj College of Engineering and Technology, S.P.G.C. Nagar, K. Vellakulam Post – 625 701, Tamilnadu, India
b Department of Polymer Technology, Kamaraj College of Engineering and Technology, S.P.G.C. Nagar, K. Vellakulam Post – 625 701, Tamilnadu, India

   
  Abstract  
  The photodegradability of polypropylene films containing 0.2% of ferric stearate and 12-hydroxy ferric stearate both under natural weathering (during winter and summer seasons) and artificial weathering at room temperature are compared. Photodegradation of polypropylene was followed by recording Fourier transform infrared spectrum and measuring the elongation properties. The added prodegradants accelerated the photodegradation of polypropylene. However, the results showed that ferric 12-hydroxy stearate is less effective when compared to ferric stearate in accelerating the photodegradation of polypropylene even though both the materials have same number of carbon atoms in their alkyl part. From the results it is possible to conclude that the concentration of Fe (III) ion in the ferric carboxylates exerts more influence on the photodegradation of polypropylene than the number of carbon atoms in the alkyl part of ferric carboxylates. The polar hydroxyl group present in 12-hydroxy ferric stearate has also a definite role in the photodegradation of polypropylene.  
     
  Keywords  
  Polypropylene; Ferric Stearate; Ferric 12-Hydroxy Stearate; Weathering; FTIR  
     
   
     
 
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