%0 Journal Article 
%A Sessini, Valentina
%A Raquez, Jean-Marie
%A Lourdin, Denis
%A Maigret, Jean-Eudes
%A Kenny, José María
%A Dubois, Philippe
%A Peponi, Laura
%T Humidity-activated Shape Memory Effects on Thermoplastic Starch/EVA Blends and Their Compatibilized Nanocomposites
%D 2017
%@ 1022-1352
%U http://hdl.handle.net/10017/43769
%X In this work, a systematic study on the humidity-activated shape memory  properties of dual-responsive shape memory bionanocomposites with both  humidity- and thermally-activated shape memory effects is reported. The  study is performed through humidity-mechanical cycles in an Instron  machine with a temperature chamber equipped with an ultrasonic humidity  generator. In particular, the bionanocomposites studied are based on  blends of ethylene&-vinyl acetate (EVA) and thermoplastic starch  reinforced with natural bentonite. In our previous work,  thermomechanical cycles are performed by using EVA-induced  crystallization and a preliminary humidity-activated shape memory test  is designed. Herein, the shape memory results of both blends and their  nanocomposites reflect the very good ability to humidity-activated  recover of the initial shape with values higher than 80%. Moreover, the  ability to fix the temporary shape of this systems is very good,  especially when nanofillers are added. The compatibilizer effect of  natural bentonite is demonstrated by means of different techniques such  as scanning emission microscopy and mapping by confocal Raman  spectroscopy.
%K blends
%K compatibilizer effect
%K EVA
%K humidity-mechanical cycles
%K shape memory
%K TPS
%K Química
%K Chemistry
%~ Biblioteca Universidad de Alcala