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Improvement of photo-stability of LLDPE-based nanocomposites

被引：51
作者：
La Mantia, F. P.
Dintcheva, N. Tzankova
Malatesta, V.
Pagani, F.
机构：
[1] Cytec Ind Italy, I-20121 Milan, Italy
[2] Univ Palermo, Dipartimento Ingn Chim Proc & Mat, I-90128 Palermo, Italy
来源：
POLYMER DEGRADATION AND STABILITY | 2006年 / 91卷 / 12期
关键词：
photo-oxidation; photo-stability; LLDPE-based nanocomposites; metal deactivator; mechanical properties;
D O I：
10.1016/j.polymdegradstab.2006.07.014
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 [高分子化学与物理]; 080501 [材料物理与化学]; 081704 [应用化学];
摘要：
LLDPE-based nanocomposites undergo faster photo-oxidation than the unfilled matrix and the extent of their physical properties deterioration, namely elongation at break and tensile strength, is dependent on the organo-nanoclay loading. The observed acceleration is not due to faster photo-oxidation but rather due to a reduction of the oxidation induction time. The presence in the organoclays of trace amounts of metal ions may be promoting catalytic photodegradation. While UV absorbers provide useful protection, use of a metal deactivator has been found to greatly enhance the photo-stability of the LLDPE-based nanocomposites. Combinations of a metal deactivator and UV absorber yield synergistic effects. (c) 2006 Elsevier Ltd. All rights reserved.
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页码：3208 / 3213
页数：6
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