Mechanical and barrier properties of ternary nanocomposite films based on polycarbonate/amorphous polyamide blends modified with a nanoclay

被引:8
作者
Santamaria, Pablo [1 ,2 ]
Gonzalez, Imanol [1 ,2 ]
Eguiazabal, Jose I. [1 ,2 ]
机构
[1] Univ Pais Vasco UPV EHU, Fac Ciencias Quim, Dept Ciencia & Tecnol Polimeros, San Sebastian 20080, Spain
[2] Univ Pais Vasco UPV EHU, Fac Ciencias Quim, Inst Mat Polimer POLYMAT, San Sebastian 20080, Spain
关键词
films; nanocomposites; polymer blends; mechanical properties; barrier properties; BISPHENOL-A POLYCARBONATE; TRANSPORT-PROPERTIES; CLAY DISPERSION; OXYGEN-BARRIER; POLYMER BLENDS; BLOWN FILMS; MORPHOLOGY; PERMEABILITY; INTERFACE; LOCATION;
D O I
10.1002/pat.3502
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Ternary polycarbonate (PC)/amorphous polyamide-nanoclay (naPA) nanocomposite (PC/naPA) films were obtained by melt mixing and drawing, and the effects of the naPA content and the draw ratio (DR) on the structure, morphology and mechanical and barrier properties were studied. Despite the presence of nanoclay, the films exhibited a negligible roughness and the excellent optical properties of PC and amorphous polyamide (aPA). The dispersed naPA phase was pure and small, indicating compatibility. The naPA did not hinder the drawing ability of PC. At low DRs the dispersed phase was elongated and oriented along the machine direction (extrusion flow direction), but at high DRs, it fibrillated due to the higher non-isothermal elongational flow induced by drawing. The laminar structure of the nanoclay allowed the films to be reinforced both in the machine and the transverse directions. The oxygen permeability of PC was reduced by 42% in the nanocomposite with 25% of naPA, and dropped further with the DR, which is attributed to the increased tortuosity of the oxygen path induced by fibrillation. Copyright (c) 2015 John Wiley & Sons, Ltd.
引用
收藏
页码:665 / 673
页数:9
相关论文
共 55 条
[1]   Effect of Highly Exfoliated and Oriented Organoclays on the Barrier Properties of Polyamide 6 Based Nanocomposites [J].
Alix, S. ;
Follain, N. ;
Tenn, N. ;
Alexandre, B. ;
Bourbigot, S. ;
Soulestin, J. ;
Marais, S. .
JOURNAL OF PHYSICAL CHEMISTRY C, 2012, 116 (08) :4937-4947
[2]   Rheological, Mechanical, Optical, and Transport Properties of Blown Films of Polyamide 6/Residual Monomer/Montmorillonite Nanocomposites [J].
Beatrice, Cesar A. G. ;
Branciforti, Marcia C. ;
Alves, Rosa M. V. ;
Bretasi, Rosario E. S. .
JOURNAL OF APPLIED POLYMER SCIENCE, 2010, 116 (06) :3581-3592
[3]   Morphological factors affecting the permeation resistance of nanocomposite blend films [J].
Bhuva, Nihir A. ;
Goettler, Lloyd A. .
POLYMER ENGINEERING AND SCIENCE, 2014, 54 (06) :1341-1349
[4]   Morphology and Crystallization Behavior of the PP/PET Nanocomposites [J].
Calcagno, Carmen I. W. ;
Mariani, Cleide M. ;
Teixeira, Sergio R. ;
Mauler, Raquel S. .
JOURNAL OF APPLIED POLYMER SCIENCE, 2009, 111 (01) :29-36
[5]   Permeability of polymer/clay nanocomposites: A review [J].
Choudalakis, G. ;
Gotsis, A. D. .
EUROPEAN POLYMER JOURNAL, 2009, 45 (04) :967-984
[6]   Effect of blending sequence on microstructure of ternary nanocomposites [J].
Dasari, A ;
Yu, ZZ ;
Mai, YW .
POLYMER, 2005, 46 (16) :5986-5991
[7]   DROPLET DEFORMATION IN POLYMER BLENDS DURING UNIAXIAL ELONGATIONAL FLOW - INFLUENCE OF VISCOSITY RATIO FOR LARGE CAPILLARY NUMBERS [J].
DELABY, I ;
ERNST, B ;
GERMAIN, Y ;
MULLER, R .
JOURNAL OF RHEOLOGY, 1994, 38 (06) :1705-1720
[8]   Assessing organo-clay dispersion in polymer nanocomposites [J].
Eckel, DF ;
Balogh, MP ;
Fasulo, PD ;
Rodgers, WR .
JOURNAL OF APPLIED POLYMER SCIENCE, 2004, 93 (03) :1110-1117
[9]   Morphology, thermomechanical and barrier properties of polypropylene ethylene vinyl alcohol blends [J].
Faisant, JB ;
Ait-Kadi, A ;
Bousmina, M ;
Deschenes, L .
POLYMER, 1998, 39 (03) :533-545
[10]   Location of a nanoclay at the interface in an immiscible poly(ε-caprolactone)/poly(ethylene oxide) blend and its effect on the compatibility of the components [J].
Fang, Z. ;
Harrats, C. ;
Moussaif, N. ;
Groeninckx, G. .
JOURNAL OF APPLIED POLYMER SCIENCE, 2007, 106 (05) :3125-3135