The effect of gamma irradiation in air and inert atmosphere on structure and properties of unfilled or glass fibre-reinforced polyamide 6

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F16%3A00459329" target="_blank" >RIV/61389013:_____/16:00459329 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1007/s00289-015-1576-0" target="_blank" >http://dx.doi.org/10.1007/s00289-015-1576-0</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/s00289-015-1576-0" target="_blank" >10.1007/s00289-015-1576-0</a>

Result language

angličtina

Original language name

The effect of gamma irradiation in air and inert atmosphere on structure and properties of unfilled or glass fibre-reinforced polyamide 6

Original language description

Crosslinking of polyamide 6 (PA) and filled one with glass fibres (PA/GF) was initiated via macroradical formation by gamma irradiation either in air or in inert argon atmosphere. The crosslinked portion was found to start at absorbed dose around 300 kGy and achieved about 60 and 40 wt% for PA and PA/GF, respectively, if irradiation proceeded in inert, while in air molecular weight increase was only observed without crosslinked gel formation. DSC indicated that irradiation leads to a decrease in crystallinity as well as lamellae thickness. Besides crosslinking, scission of polymer chains also occurs. Modest increase of impact strength was found for PA while small decrease for PA/GF was observed. The dependence of Young’s modulus values on the irradiation dose indicates a minimum around gel point being more pronounced for PA compared to the composite. Irradiation resulted in minor changes in tensile strength and elongation at break while a substantial increase in the elongation at yield was found for PA if irradiated in inert atmosphere. Generally, the application of an optimal dose of gamma irradiation in air results in an increase of toughness of PA without changing other mechanical properties.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

CD - Macromolecular chemistry

OECD FORD branch

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Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Polymer Bulletin

ISSN

0170-0839

e-ISSN

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Volume of the periodical

73

Issue of the periodical within the volume

6

Country of publishing house

DE - GERMANY

Number of pages

20

Pages from-to

1775-1794

UT code for WoS article

000376248900019

EID of the result in the Scopus database

2-s2.0-84948430983