Degradation of poly(bisphenol-a-epichlorohydrin) by gamma irradiation

Date

2008-06-01

Author

Ozdemir, Tonguc
Usanmaz, Ali

Metadata

Show full item record

This work is licensed under a Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Item Usage Stats

234
views

0
downloads

In this study, radiation stability of poly(bisphenol-a-epichloroliydrin) (PBEH) was studied via gamma irradiations at two different dose rates of 1540 and 82.8 Gy/h, in order to understand the possible use of PBEH in radioactive waste management as a solidifying agent. The total dose of irradiation was up to 2150kGy. Degradation nature was tested by studying the changes in mechanical and thermal properties with the change of dose rate and total dose of irradiation. Tensile strength at yield was increased first then decreased when irradiated, while toughness decreased. The half value dose (HVD) of elongation was found as 29 kGy at dose rate of 1540 Gy/h. The non-irradiated PBEH was transparent, and the color changed to yellow with irradiation. Mechanical tests showed that PBEH has high radiation stability although there were some structural changes. It was seen that PBEH is a candidate polymer to be used in the immobilization of radioactive waste regarding radiation stability.

Subject Keywords

Radiation

URI

https://hdl.handle.net/11511/50639

Journal

RADIATION PHYSICS AND CHEMISTRY

DOI

https://doi.org/10.1016/j.radphyschem.2008.01.003

Collections

Graduate School of Natural and Applied Sciences, Article

Suggestions

OpenMETU
Core

Co-60 gamma irradiation influences on physical, chemical and electrical characteristics of HfO2/Si thin films KAYA, ŞENOL; Yıldız, İlker; LÖK, RAMAZAN; YILMAZ, ERCAN (Elsevier BV, 2018-09-01) Co-60 gamma irradiation effects on physical, chemical and electrical characteristics of HfO2/Si thin films have been investigated in details. The variations on the crystallographic structure and surface morphology of the films under irradiation exposures were characterized by using X-ray diffractions (XRD) and Atomic Force Microscopy (AFM) measurements. The irradiation influences on the electrochemical structure of the films were analyzed by X-ray photoelectron spectroscopy (XPS) for various depths of the H...
Treatment of opium alkaloid containing wastewater in sequencing batch reactor (SBR)-Effect of gamma irradiation Bural, Cavit B.; Demirer, Goksel N.; Kantoglu, Omer; Dilek, Filiz Bengü (Elsevier BV, 2010-04-01) Aerobic biological treatment of opium alkaloid containing wastewater as well as the effect of gamma irradiation as pre-treatment was investigated. Biodegradability of raw wastewater was assessed in aerobic batch reactors and was found highly biodegradable (83-90% degradation). The effect of irradiation (40 and 140 kGy) on biodegradability was also evaluated in terms of BOD5/COD values and results revealed that irradiation imparted no further enhancement in the biodegradability. Despite the highly biodegrada...
Use of poly(methyl methacrylate) in radioactive waste management: I. Radiation stability and degradation Ozdemir, T.; Usanmaz, Ali (Elsevier BV, 2009-03-01) In this study, in order to understand the possible use of PMMA in radioactive waste management as a solidifying agent, radiation stability of the PMMA was studied by gamma irradiations at two different dose rates of 1485 and 82.8 Gy/h. The total dose of irradiation was up to 523 kGy. Degradation nature was tested by studying the changes in mechanical and thermal properties with rate and total dose of irradiation. Ultimate tensile strength and toughness first increased and then decreased with total irradiati...
Gamma irradiation degradation/modification of 5-ethylidene 2-norbornene (ENB)-based ethylene propylene diene rubber (EPDM) depending on ENB content of EPDM and type/content of peroxides used in vulcanization Ozdemir, Tonguc (Elsevier BV, 2008-06-01) In this study, the radiation degradation/modification of the vulcanized EPDM and the effects of dose rate, peroxide type/content in vulcanization system and ENB content of EPDM were studied to investigate the change in the extend of the modification/degradation of the mechanical properties of vulcanized EPDM via gamma irradiation. In addition, thermal, dynamic mechanical, ATR-FTIR, TGA, TGA-FTIR tests were carried out to understand the change of properties of vulcanized EPDM via irradiation. Samples were ir...
Degradation of EPDM via gamma irradiation and possible use of EPDM in radioactive waste management Hacıoğlu, Fırat; Usanmaz, Ali; Özdemir, Tonguç; Department of Polymer Science and Technology (2010) In this study, degradation of ethylene propylene diene terpolymer (EPDM) via gamma radiation and possible use of EPDM in radioactive waste management were investigated. In estimation of radiation stability and possible use of EPDM in radioactive waste management, dose rate (both high and low), irradiation environment (in water and in air), additives (carbon black, zinc oxide, plasticizer) used in formulation, peroxide type (either aliphatic or aromatic) and content were parameters which were analyzed. Three...

Citation Formats

T. Ozdemir and A. Usanmaz, “Degradation of poly(bisphenol-a-epichlorohydrin) by gamma irradiation,” RADIATION PHYSICS AND CHEMISTRY, pp. 799–805, 2008, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/50639.