Gel production, oxidative degradation and dielectric properties of isotactic polypropylene irradiated under various atmospheres
Апстракт
In this work, changes in structure and physical properties of stabilized isotactic polypropylene (iPP) were created by gamma irradiation, up to a dose of 700 kGy, in different media: air, deionised distilled (DD) water and acetylene. Gel and infrared (IR) spectroscopy measurements were used to determine the changes in the degree of network formation and oxidative degradation, respectively. Sol-gel analysis was studied in detail using the Charlesby-Pinner (C-P) equation. The radiation-induced changes in the structure and evolution of oxygen-containing species were also studied through dielectric loss (tan delta) analysis in a wide temperature and/or frequency range. Evolution of low temperature dielectric relaxations with gamma irradiation was investigated. In the case of dielectric relaxation measurements, the polar groups that were introduced by irradiation in non-polar iPP were considered as tracer groups. Conclusions derived according to different methods were compared. (c) 2009 Els...evier Ltd. All rights reserved.
Кључне речи:
Gamma irradiation / Polypropylene / Cross-linking / Oxidative degradation / Dielectric propertiesИзвор:
Polymer Degradation and Stability, 2009, 94, 4, 521-526Финансирање / пројекти:
- Ministry of Science and Technology of the Republic of Serbia [141013]
DOI: 10.1016/j.polymdegradstab.2009.01.029
ISSN: 0141-3910
WoS: 000265181100005
Scopus: 2-s2.0-61849087351
Колекције
Институција/група
VinčaTY - JOUR AU - Suljovrujić, Edin H. PY - 2009 UR - https://vinar.vin.bg.ac.rs/handle/123456789/3676 AB - In this work, changes in structure and physical properties of stabilized isotactic polypropylene (iPP) were created by gamma irradiation, up to a dose of 700 kGy, in different media: air, deionised distilled (DD) water and acetylene. Gel and infrared (IR) spectroscopy measurements were used to determine the changes in the degree of network formation and oxidative degradation, respectively. Sol-gel analysis was studied in detail using the Charlesby-Pinner (C-P) equation. The radiation-induced changes in the structure and evolution of oxygen-containing species were also studied through dielectric loss (tan delta) analysis in a wide temperature and/or frequency range. Evolution of low temperature dielectric relaxations with gamma irradiation was investigated. In the case of dielectric relaxation measurements, the polar groups that were introduced by irradiation in non-polar iPP were considered as tracer groups. Conclusions derived according to different methods were compared. (c) 2009 Elsevier Ltd. All rights reserved. T2 - Polymer Degradation and Stability T1 - Gel production, oxidative degradation and dielectric properties of isotactic polypropylene irradiated under various atmospheres VL - 94 IS - 4 SP - 521 EP - 526 DO - 10.1016/j.polymdegradstab.2009.01.029 ER -
@article{ author = "Suljovrujić, Edin H.", year = "2009", abstract = "In this work, changes in structure and physical properties of stabilized isotactic polypropylene (iPP) were created by gamma irradiation, up to a dose of 700 kGy, in different media: air, deionised distilled (DD) water and acetylene. Gel and infrared (IR) spectroscopy measurements were used to determine the changes in the degree of network formation and oxidative degradation, respectively. Sol-gel analysis was studied in detail using the Charlesby-Pinner (C-P) equation. The radiation-induced changes in the structure and evolution of oxygen-containing species were also studied through dielectric loss (tan delta) analysis in a wide temperature and/or frequency range. Evolution of low temperature dielectric relaxations with gamma irradiation was investigated. In the case of dielectric relaxation measurements, the polar groups that were introduced by irradiation in non-polar iPP were considered as tracer groups. Conclusions derived according to different methods were compared. (c) 2009 Elsevier Ltd. All rights reserved.", journal = "Polymer Degradation and Stability", title = "Gel production, oxidative degradation and dielectric properties of isotactic polypropylene irradiated under various atmospheres", volume = "94", number = "4", pages = "521-526", doi = "10.1016/j.polymdegradstab.2009.01.029" }
Suljovrujić, E. H.. (2009). Gel production, oxidative degradation and dielectric properties of isotactic polypropylene irradiated under various atmospheres. in Polymer Degradation and Stability, 94(4), 521-526. https://doi.org/10.1016/j.polymdegradstab.2009.01.029
Suljovrujić EH. Gel production, oxidative degradation and dielectric properties of isotactic polypropylene irradiated under various atmospheres. in Polymer Degradation and Stability. 2009;94(4):521-526. doi:10.1016/j.polymdegradstab.2009.01.029 .
Suljovrujić, Edin H., "Gel production, oxidative degradation and dielectric properties of isotactic polypropylene irradiated under various atmospheres" in Polymer Degradation and Stability, 94, no. 4 (2009):521-526, https://doi.org/10.1016/j.polymdegradstab.2009.01.029 . .