Abstract
The changes in the carbonyl index, the melt flow rate, the crystalline content and the ultimate tensile properties of metallocene linear low density polyethylene (mLLDPE) films subjected to gamma irradiation from 10 to 800 kGy, were investigated with and without hindered amine stabilizer (HAS). For comparative purposes, unstabilized and HAS stabilized low density polyethylene (LDPE) were also studied. The results indicated that under gamma irradiation, the HAS stabilizer did not have any influence on the oxidative stability of mLLDPE films as compared with unstabilized ones due probably to complexation reactions between the nitroxyl radicals of the stabilizer and the metallocene catalysts leading to inert species. Moreover, higher increases in melt flow index and crystalline content with a fast drop in ultimate tensile properties were observed for higher doses indicating the occurrence of chain scission. It was also found that the metallocene LLDPE structure had no significant effect on the radiation induced oxidative degradation kinetics when compared to LDPE. Whereas, the addition of HAS to LDPE significantly lowered the formation rates of carbonyls and subsequently improved the durability of the material by doubling the half-value-dose.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
References
Al-Malaika S, Peng X, Watson H (2006) Polym Degrad Stab 91:3131
Bialek M, Czaja K, Sacher-Majewska B (2005) Thermochim Acta 429:149
Kaminsky W (1998) Pure Appl Chem 70:1229
Kim Y, Han Y, Do Y (2001) J Organomet Chem 634:19
Bubeck R A (2002) Mater Sci Eng R 39:1
Zhang J, Wang X, Jin G-X (2006) Coord Chem Rev 250:95
Gelfer M, Horst R H, Winter H H, Heintz A M, Hsu S L (2003) Polymer 44:2363
Jordens K, Wilkes G L, Janzen J, Rohlfing D C, Welch M B (2000) Polymer 41:7175
Aguilar M, Vega J F, Sanz E, Martinez-Salazar J (2001) Polymer 42:9713
Yan D, Wang W-J, Zhu S (1999) Polymer 40:1737
Cho H S, Chung J S, Lee W Y (2000) J Mol Catal A: Chem 159:203
Basfar A A, Idriss Ali K M, Mofti S M (2003) Polym Degrad Stab 82:229
Zhao Y, Luo Y, Jiang B (1993) J Appl Polym Sci 50:1797
Krupa I, Luyt A S (2001) Polym Degrad Stab 71:361
Sen M, Basfar A A (1998) Radiat Phys Chem 52:247
Hoang E M, Allen N S, Liauw C M, Fontan E, Lafuente P (2005) Polym Degrad Stab 91:1
Kaci M, Remili C, Khima R, Sadoun T (2003) Macromol Mater Eng 288:724
Pimblott S M, LaVerne J A (2002) J Phys Chem A 106:9420
Hodgeman D K C (1982) Developments in Polymer Degradation-4. Applied Science Publisher LTD, London
Kontou E, Niaounakis M, Spathis G (2002) Eur Polym J 38:2477
Yeom B, Yu Y-J, Mc Kellop H A, Salovey R (1998) J Polym Sci Part A: Polym Chem 36:329
Kaci M, Touati N, Setnescu R, Zaharescu T, Setnescu T, Jipa S (2005) Macromol Mater Eng 290:802
Fairgrieve S P, Mac Callum J R (1986) Polym Degrad Stab 84:475
Janimak J J, Stevens G C (1999) Thermochim Acta 332:125
Marinovic-Cincovic M, Kacarevic-Popovic Z, Babic D (2003) Radiat Phys Chem 67:425
Suarez J C M, Monteiro E E C, Mano E B (2002) Polym Degrad Stab 75:143
Suarez J C M, Mano E B, Tavares M I B (2000) J Appl Polym Sci 78:899
Hamid S H (2000) J Appl Polym Sci 78:1591
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Kaci, M., Djidjelli, H. & Boukedami, T. Study of the effect of gamma irradiation on the structure and properties of metallocene linear low density polyethylene containing hindered amines . Polym. Bull. 60, 387–395 (2008). https://doi.org/10.1007/s00289-007-0850-1
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00289-007-0850-1