Cover Image

Mechanical, electrical, and thermal properties of irradiated low-density polyethylene by electron beam

The effect of electron-beam (EB) irradiation on the mechanical, electrical, and thermal properties of low-density polyethylene (LDPE) was studied The LDPE was irradiated by using 3 MeV EB machine at doses ranging from 25 to 250 kGy in air at room temperature and analyzed for mechanical, thermal, and...

Full description

Saved in:
Bibliographic Details
Main Authors: Sabet, Maziyar, Hassan, Azman, Ratnam, Chantara Thevy
Format: Article
Published: Springer-Verlag 2012
Subjects:
TP Chemical technology
Online Access:http://eprints.utm.my/id/eprint/47198/
http://dx.doi.org/10.1007/s00289-012-0741-y
Tags: Add Tag
No Tags, Be the first to tag this record!
id my.utm.47198
record_format eprints
spelling my.utm.471982019-03-05T02:03:35Z http://eprints.utm.my/id/eprint/47198/ Mechanical, electrical, and thermal properties of irradiated low-density polyethylene by electron beam Sabet, Maziyar Hassan, Azman Ratnam, Chantara Thevy TP Chemical technology The effect of electron-beam (EB) irradiation on the mechanical, electrical, and thermal properties of low-density polyethylene (LDPE) was studied The LDPE was irradiated by using 3 MeV EB machine at doses ranging from 25 to 250 kGy in air at room temperature and analyzed for mechanical, thermal, and electrical properties. It was revealed by differential scanning calorimetry analysis that the crystallinity of the EB-radiated LDPE decreased slightly as verified by a marginal reduction in the densities, enthalpy, and melting points. Thermogravimetric analysis test showed that the thermal degradation of LDPE improved by increasing irradiation. The results obtained from both gel content and hot set tests, indicating whether the applicable LDPE has been properly cross-linked or not, showed that under the EB irradiation conditions employed, the cross-linking of the LDPE samples occur mainly in the amorphous region, and the cross-linking density at each irradiation dose depends almost on the amorphous portions of the LDPE. A significant improvement in the tensile strength of the neat LDPE samples was obtained upon EB up to 250 kGy with a concomitant decline in elongation at break. The results on the electrical properties revealed that the surface resistance, volume resistivity, and dielectric strength of the LDPE increase with irradiation dose and reaches a maximum at a 250 kGy irradiation dose. No considerable change of breakdown voltage, dielectric constant, and dielectric loss factor were observed with increasing irradiation dose. The enhancement in the heat deformation, hardness, and thermal aging properties of LDPE upon EB irradiation, suggests that irradiated LDPE is more thermally and mechanically stable than virgin LDP. Springer-Verlag 2012 Article PeerReviewed Sabet, Maziyar and Hassan, Azman and Ratnam, Chantara Thevy (2012) Mechanical, electrical, and thermal properties of irradiated low-density polyethylene by electron beam. Polymer Bulletin, 68 (9). pp. 2323-2339. ISSN 0170-0839 http://dx.doi.org/10.1007/s00289-012-0741-y DOI:10.1007/s00289-012-0741-y
institution Universiti Teknologi Malaysia
building UTM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Malaysia
content_source UTM Institutional Repository
url_provider http://eprints.utm.my/
topic TP Chemical technology
spellingShingle TP Chemical technology
Sabet, Maziyar
Hassan, Azman
Ratnam, Chantara Thevy
Mechanical, electrical, and thermal properties of irradiated low-density polyethylene by electron beam
description The effect of electron-beam (EB) irradiation on the mechanical, electrical, and thermal properties of low-density polyethylene (LDPE) was studied The LDPE was irradiated by using 3 MeV EB machine at doses ranging from 25 to 250 kGy in air at room temperature and analyzed for mechanical, thermal, and electrical properties. It was revealed by differential scanning calorimetry analysis that the crystallinity of the EB-radiated LDPE decreased slightly as verified by a marginal reduction in the densities, enthalpy, and melting points. Thermogravimetric analysis test showed that the thermal degradation of LDPE improved by increasing irradiation. The results obtained from both gel content and hot set tests, indicating whether the applicable LDPE has been properly cross-linked or not, showed that under the EB irradiation conditions employed, the cross-linking of the LDPE samples occur mainly in the amorphous region, and the cross-linking density at each irradiation dose depends almost on the amorphous portions of the LDPE. A significant improvement in the tensile strength of the neat LDPE samples was obtained upon EB up to 250 kGy with a concomitant decline in elongation at break. The results on the electrical properties revealed that the surface resistance, volume resistivity, and dielectric strength of the LDPE increase with irradiation dose and reaches a maximum at a 250 kGy irradiation dose. No considerable change of breakdown voltage, dielectric constant, and dielectric loss factor were observed with increasing irradiation dose. The enhancement in the heat deformation, hardness, and thermal aging properties of LDPE upon EB irradiation, suggests that irradiated LDPE is more thermally and mechanically stable than virgin LDP.
format Article
author Sabet, Maziyar
Hassan, Azman
Ratnam, Chantara Thevy
author_facet Sabet, Maziyar
Hassan, Azman
Ratnam, Chantara Thevy
author_sort Sabet, Maziyar
title Mechanical, electrical, and thermal properties of irradiated low-density polyethylene by electron beam
title_short Mechanical, electrical, and thermal properties of irradiated low-density polyethylene by electron beam
title_full Mechanical, electrical, and thermal properties of irradiated low-density polyethylene by electron beam
title_fullStr Mechanical, electrical, and thermal properties of irradiated low-density polyethylene by electron beam
title_full_unstemmed Mechanical, electrical, and thermal properties of irradiated low-density polyethylene by electron beam
title_sort mechanical, electrical, and thermal properties of irradiated low-density polyethylene by electron beam
publisher Springer-Verlag
publishDate 2012
url http://eprints.utm.my/id/eprint/47198/
http://dx.doi.org/10.1007/s00289-012-0741-y
_version_ 1643652256833208320
score 13.211869

Similar Items