Investigation of Beta - irradiation effects on the microstructure of Low Density Polyethylene (LDPE) using (PALT)
Beta-irradiation effects on the microstructure of LDPE samples have been investigated using Positron Annihilation Lifetime Technique (PALT). These effects on the orthopositronium (o-Ps) Lifetime t3, the free positron annihilation lifetime 2 t , the free-volume hole size (Vh) and the free volume fra...
| Main Author: | |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
University of Baghdad
2009-10-01
|
| Series: | Iraqi Journal of Physics |
| Subjects: | |
| Online Access: | https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/893 |
| _version_ | 1797871332173545472 |
|---|---|
| author | A. A. Abdullah |
| author_facet | A. A. Abdullah |
| author_sort | A. A. Abdullah |
| collection | DOAJ |
| description |
Beta-irradiation effects on the microstructure of LDPE samples have been investigated
using Positron Annihilation Lifetime Technique (PALT). These effects on the orthopositronium
(o-Ps) Lifetime t3, the free positron annihilation lifetime 2 t , the free-volume
hole size (Vh) and the free volume fraction (fh) were measured as functions of Beta
irradiation - dose up to a total dose of 30.28 kGy.
The results show that the values of t3, Vh and fh increase gradually with increasing Beta
dose up to a total dose of 1.289 kGy, and reach a maximum increment of 17.4%, 32.8% and
5.86%, respectively, while t2 reachs maximum increment of 211.9% at a total dose of 1.59
kGy. Above these doses, the values show nonlinear changes up to a maximum dose of
30.28 kGy.
The results are discussed in the view point that Beta - irradiation may induce degradation,
cross-linking and increasing of crystallinity in the amorphous regions of LDPE
|
| first_indexed | 2024-04-10T00:41:07Z |
| format | Article |
| id | doaj.art-d2df711c47bc4080ad7d5381fdb326b1 |
| institution | Directory Open Access Journal |
| issn | 2070-4003 2664-5548 |
| language | English |
| last_indexed | 2024-04-10T00:41:07Z |
| publishDate | 2009-10-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Iraqi Journal of Physics |
| spelling | doaj.art-d2df711c47bc4080ad7d5381fdb326b12023-03-14T05:52:11ZengUniversity of BaghdadIraqi Journal of Physics2070-40032664-55482009-10-0179Investigation of Beta - irradiation effects on the microstructure of Low Density Polyethylene (LDPE) using (PALT)A. A. Abdullah0Department of Physics, College of Science, University of Baghdad. Baghdad-Iraq Beta-irradiation effects on the microstructure of LDPE samples have been investigated using Positron Annihilation Lifetime Technique (PALT). These effects on the orthopositronium (o-Ps) Lifetime t3, the free positron annihilation lifetime 2 t , the free-volume hole size (Vh) and the free volume fraction (fh) were measured as functions of Beta irradiation - dose up to a total dose of 30.28 kGy. The results show that the values of t3, Vh and fh increase gradually with increasing Beta dose up to a total dose of 1.289 kGy, and reach a maximum increment of 17.4%, 32.8% and 5.86%, respectively, while t2 reachs maximum increment of 211.9% at a total dose of 1.59 kGy. Above these doses, the values show nonlinear changes up to a maximum dose of 30.28 kGy. The results are discussed in the view point that Beta - irradiation may induce degradation, cross-linking and increasing of crystallinity in the amorphous regions of LDPE https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/893Polyethylene |
| spellingShingle | A. A. Abdullah Investigation of Beta - irradiation effects on the microstructure of Low Density Polyethylene (LDPE) using (PALT) Iraqi Journal of Physics Polyethylene |
| title | Investigation of Beta - irradiation effects on the microstructure of Low Density Polyethylene (LDPE) using (PALT) |
| title_full | Investigation of Beta - irradiation effects on the microstructure of Low Density Polyethylene (LDPE) using (PALT) |
| title_fullStr | Investigation of Beta - irradiation effects on the microstructure of Low Density Polyethylene (LDPE) using (PALT) |
| title_full_unstemmed | Investigation of Beta - irradiation effects on the microstructure of Low Density Polyethylene (LDPE) using (PALT) |
| title_short | Investigation of Beta - irradiation effects on the microstructure of Low Density Polyethylene (LDPE) using (PALT) |
| title_sort | investigation of beta irradiation effects on the microstructure of low density polyethylene ldpe using palt |
| topic | Polyethylene |
| url | https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/893 |
| work_keys_str_mv | AT aaabdullah investigationofbetairradiationeffectsonthemicrostructureoflowdensitypolyethyleneldpeusingpalt |