Poly[(butylene succinate)-co-(butylene adipate)]-Montmorillonite Nanocomposites Prepared by Water-Assisted Extrusion: Role of the Dispersion Level and of the Structure-Microstructure on the Enhanced Barrier Properties

详细信息    查看全文

• 作者：Sébastien Charlon ; Nadège Follain ; Eric Dargent ; Jérémie Soulestin ; Michel Sclavons ; Stéphane Marais
• 刊名：Journal of Physical Chemistry C
• 出版年：2016
• 出版时间：June 23, 2016
• 年：2016
• 卷：120
• 期：24
• 页码：13234-13248
• 全文大小：932K
• 年卷期：0
• ISSN：1932-7455

文摘

Composite films composed of a biodegradable poly[(butylene succinate)-co-(butylene adipate)] (PBSA) matrix with several contents (2.5; 5; 7.5; 10 wt %) of native (MMT) or organo-modified montmorillonite (OMMT) were successfully extruded using an innovative water-assisted extrusion process. As expected, better dispersion and exfoliation levels of nanofillers were obtained in PBSA+OMMT than in PBSA+MMT composite films, whatever the nanofiller content. Otherwise, the water-assisted extrusion process has also clearly enhanced the dispersion and exfoliation levels of native montmorillonite. This process was particularly efficient to delaminate and to disperse high amounts (≥5 wt %) of MMT in the PBSA matrix, which has highly increased tortuosity effects in the resulting composite films. The films prepared via the water-assisted extrusion have consequently exhibited better barrier properties to water and to gases than the films classically extruded and as the nanofiller content increases.