Influence of some crosslinking agents on thermal and mechanical properties of electron beam irradiated polylactide

被引：58

作者：

Rytlewski, Piotr ^{[1
]}

Malinowski, Rafal ^{[2
]}

Moraczewski, Krzysztof ^{[1
]}

Zenkiewicz, Marian ^{[2
]}

机构：

[1] Kazimierz Wielki Univ, Dept Mat Engn, PL-85064 Bydgoszcz, Poland

[2] Inst Engn Polymer Mat & Dyes, PL-87100 Torun, Poland

来源：

RADIATION PHYSICS AND CHEMISTRY | 2010年 / 79卷 / 10期

关键词：

Polylactide; Electron radiation; Crosslinking agents; Thermoanalysis; Mechanical properties; CRYSTALLIZATION BEHAVIOR; RADIATION; ACID); STEREOCOMPLEX; COMPOSITES; COPOLYMER; POLYMERS; PLLA; PDLA;

D O I：

10.1016/j.radphyschem.2010.04.013

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The aim of this article was to determine and compare the influence of trimethylopropane trimethacylate (TMPTA) and trially isocyanurate (TAIC) crosslinking agents on thermal and mechanical properties of electron beam irradiated polylactide (PEA). The blends were made of PLA mixed with 3 wt% of TMPTA (PLA/TMPTA), and PLA mixed with 3 wt% of TAIC (PLA/TAIC). Injection moulded samples were irradiated with the use of high energy (10 MeV) electron beam at various radiation doses to crosslinking PEA macromolecules. Thermal and mechanical properties were investigated by means of differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), tensile strength, and impact strength measurements. The samples were also characterized by Fourier transform infrared spectroscopy (FTIR). It was found that under the influence of electron irradiation PLA/TMPTA samples underwent degradation while PLA/TAIC samples became crosslinked. Tensile and impact strengths of PLA/TMPTA samples decreased with increasing radiation dose while an enhancement of these properties for PLA/TAIC samples was observed. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1052 / 1057

页数：6

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