COMPARISON OF CHEMICAL CHANGES DURING PHOTOOXIDATION OF POLYPROPYLENE FILM AND FILAMENT CONTAINING PHTHALOCYANINE PIGMENT

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AHMADI Z.; HAGHIGHAT KISH M.; KOTAK R.; KATBAB A.A.

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Journal: Iranian Journal of Polymer Science and Technology Year:2008 | Volume:20 | Issue:6 (ISSUE NO. 90) Page(s): 561-574

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Title

COMPARISON OF CHEMICAL CHANGES DURING PHOTOOXIDATION OF POLYPROPYLENE FILM AND FILAMENT CONTAINING PHTHALOCYANINE PIGMENT

Author(s)

AHMADI Z. | HAGHIGHAT KISH M. | KOTAK R. | KATBAB A.A. | Issue Writer Certificate

Keywords

PIGMENTQ3

PHTHALOCYANINEQ3

POLYPROPYLENEQ3

PHOTOOXIDATIONQ3

PHOTODEGRADATIONQ3

Abstract

Photooxidation as an important process, which significantly affects the service life of the POLYPROPYLENE products, has been the subject of much theoretical and experimental study. PIGMENTs used often change the light stabilities of POLYPROPYLENE. Out-door applications of PIGMENTed POLYPROPYLENE are now increasingly developed in products such as artificial grass. The aim of this work is to examine the effect of photo-oxidation on the structure of isotactic POLYPROPYLENE (iPP) in film and filament forms, where PHTHALOCYANINE PIGMENT is used. For production of films and filaments, iPP granules with MFI 25 g/10min were used, with and without PHTHALOCYANINE PIGMENT. Samples were exposed to xenon lamp for various time lengths. The extent of the changes in chemical and structural parameters was examined by differential scanning calorimetry, Fourier transform infrared spectroscopy and wide angle x-ray diffraction. The results show that carbonyl and hydroperoxide indices increase during the exposure to the radiation. The changes in melting points of the samples were not significant after irradiation process. The effects of PHTHALOCYANINE PIGMENT in the PHOTOOXIDATION of film and filament were different. Crystalline fractions of the non-PIGMENTed filament samples decreased during the irradiation time while increased in film samples. Build up of hydroperoxide and carbonyl group in filament was higher than in film samples; that could be due to the differences in structural parameters. Crystallinity variations during PHOTOOXIDATION are related to the nucleation effect of the PIGMENT, chemical crystallization and phase transformation.

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APA: Copy

AHMADI, Z., HAGHIGHAT KISH, M., KOTAK, R., & KATBAB, A.A.. (2008). COMPARISON OF CHEMICAL CHANGES DURING PHOTOOXIDATION OF POLYPROPYLENE FILM AND FILAMENT CONTAINING PHTHALOCYANINE PIGMENT. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), 20(6 (ISSUE NO. 90)), 561-574. SID. https://sid.ir/paper/6343/en

Vancouver: Copy

AHMADI Z., HAGHIGHAT KISH M., KOTAK R., KATBAB A.A.. COMPARISON OF CHEMICAL CHANGES DURING PHOTOOXIDATION OF POLYPROPYLENE FILM AND FILAMENT CONTAINING PHTHALOCYANINE PIGMENT. IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN)[Internet]. 2008;20(6 (ISSUE NO. 90)):561-574. Available from: https://sid.ir/paper/6343/en

IEEE: Copy

Z. AHMADI, M. HAGHIGHAT KISH, R. KOTAK, and A.A. KATBAB, “COMPARISON OF CHEMICAL CHANGES DURING PHOTOOXIDATION OF POLYPROPYLENE FILM AND FILAMENT CONTAINING PHTHALOCYANINE PIGMENT,” IRANIAN JOURNAL OF POLYMER SCIENCE AND TECHNOLOGY (PERSIAN), vol. 20, no. 6 (ISSUE NO. 90), pp. 561–574, 2008, [Online]. Available: https://sid.ir/paper/6343/en

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