Rheological and mechanical properties of polyamide 6 modified by electron-beam initiated mediation process

Title
Rheological and mechanical properties of polyamide 6 modified by electron-beam initiated mediation process
Author(s)
신부영김재홍
Keywords
MOLECULAR-WEIGHT; CROSS-LINKING; RADIATION; NYLON-6; ACID)
Issue Date
201507
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Citation
RADIATION PHYSICS AND CHEMISTRY, v.112, pp.88 - 96
Abstract
Polyamide (PA6) has been modified by electron-beam initiated mediator process to improve drawbacks of PA6. Glycidyl methacrylate (GMA) was chosen as a reactive mediator for modification process of PA6. The mixture of the PA6 and GMA was prepared by using a twin-screw extruder, and then the mixture was exposed to electron-beam irradiation at various doses at room temperature. The modified PA6 were characterized by observing rheological and mechanical properties and compared virgin PA6. Thermal properties, water absorption, and gel fraction were also investigated. Tight gel was not found even when PA6 was irradiated at 200 kGy. Complex viscosity and storage modulus of PA6 were remarkably increased by electron-beam irradiation with medium of GMA. Maximum increase in complex viscosity was 75 times higher than virgin PA6 at 0.1 rad/s when it was irradiated at 200 kGy with the GMA. Mechanical properties were also improved without scarifying of processability. The reaction mechanisms for the mediation process with the reactive mediator of GMA were estimated to elucidate the cause of significantly enhanced rheological and mechanical properties without loss of thermoplasticity. (C) 2015 Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/YU.REPOSITORY/31632http://dx.doi.org/10.1016/j.radphyschem.2015.02.006
ISSN
0969-806X
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공과대학 > 화학공학부 > Articles
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