期刊
CARBOHYDRATE POLYMERS
卷 147, 期 -, 页码 16-27出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.carbpol.2016.03.070
关键词
Starch; Grafted polycaprolactone; Maleic anhydride; Glycidyl methacrylate; Interfacial adhesion
资金
- Ministerio de Economia y Competitividad (Spain) [AGL2013-42989]
- project MAREA, Materiali Avanzati per la Ricerca ed il comparto Agroalimentare-in the frame of National Operative Program (PON)
- Conselleria de Educacio de la Comunitat Valenciana [GRISOLIA 2012/001]
The use of a modified poly(epsilon-caprolactone) (gPCL) to enhance polymer miscibility in films based on thermoplastic starch (S) and poly(epsilon-caprolactone) is reported. PCL was functionalized by grafting with maleic anyhdride (MA) and/or glycidyl methacrylate (GMA) by reactive blending in a batch mixer. gPCL based materials were analysed in terms of their grafting degree, structural and thermal properties. Blends based on starch and PCL (wt. ratio 80:20) with including gPCL (0, 2.5 and 5 wt.%), as a compatibilizer, were obtained by extrusion and compression moulding, and their structural, thermal, mechanical and barrier properties were investigated. Blends containing gPCL evidenced better interfacial adhesion between starch and PCL domains, as deduced from both structural (XRD, FTIR, SEM) and bulk properties (DSC, TGA). Moreover, grafted PCL-based compatibilizers greatly improved functional properties of S-PCL blend films, as pointed out from mechanical performance and higher barrier properties, valuable to meet the food packaging requirements. (C) 2016 Elsevier Ltd. All rights reserved.
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