Effect of relative humidity on the mechanical properties of micro and nanocomposites of polyvinyl alcohol

被引：7
|
作者：
Ollier, R. [1 ]
Perez, C. J. [2 ]
Alvarez, V. [1 ]
机构：
[1] Natl Univ Mar del Plata, Res Inst Mat Sci & Technol INTEMA CONICET, Composite Mat Grp CoMP, Fac Engn, Solis 7575,B7608FDQ, Mar Del Plata, Buenos Aires, Argentina
[2] Natl Univ Mar del Plata, Res Inst Mat Sci & Technol INTEMA CONICET, Mar Del Plata, Argentina
来源：
11TH INTERNATIONAL CONGRESS ON METALLURGY & MATERIALS SAM/CONAMET 2011 | 2012年 / 1卷
关键词：
degradable polymer; water absorption; microcomposites; nanocomposites; FILMS; GELATIN; BLENDS;
D O I：
10.1016/j.mspro.2012.06.067
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of relative humidity on the mechanical properties of poly(vinyl alcohol) (PVOH) micro and nanocomposites was evaluated. Two different commercial fillers (microcellulose and bentonite) were used as reinforcement. PVOH and PVOH composite films were prepared by casting technique. The incorporation of microcellulose increased the content of water absorption and the modulus, especially for the higher contents of filler. The effect of reinforcement on the mechanical properties was more pronounced at higher relative humidity. On the other hand, the incorporation of nanofiller produced a decrease in water absorption probably due to the decrease of mean free path of water molecules. The modulus of the nanocomposites improved from the matrix, but the mechanical properties are deteriorated by effect of the humidity. (C) 2012 Published by Elsevier Ltd. Selection and/or peer-review under responsibility of SAM/CONAMET 2011, Rosario, Argentina.
引用
收藏
页码：499 / 505
页数：7
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