Impact fracture toughness of polyamide‐6/montmorillonite nanocomposites toughened with a maleated styrene/ethylene butylene/styrene elastomer

Polyamide-6 (PA6)/montmorillonite (MMT) nanocomposites toughened with maleated styrene/ethylene butylene/styrene (SEBS-g-MA) were prepared via melt compounding. Before melt intercalation, MMT was treated with an organic surfactant agent. Tensile and impact tests revealed that the PA6/4% MMT nanocomposite fractured in a brittle mode. The effects of SEBS-g-MA addition on the static tensile and impact properties of PA6/4% MMT were investigated. The results showed that the SEBS-g-MA addition improved the tensile ductility and impact strength of the PA6/4% MMT nanocomposite at the expenses of its tensile strength and stiffness. Accordingly, elastomer toughening represents an attractive route to novel characteristics for brittle clay-reinforced polymer nanocomposites. The essential work of fracture (EWF) approach under impact drop-weight conditions was used to evaluate the impact fracture toughness of nanocomposites toughened with an elastomer. Impact EWF measurements indicated that the SEBS-g-MA addition increased the fracture toughness of the PA6/4% MMT nanocomposite. © 2005 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 43: 585–595, 2005

[1]  D. R. Paul,et al.  Impact-modified nylon 6/polypropylene blends: 1. Morphology-property relationships , 1995 .

[2]  S. Tjong,et al.  Ternary polymer composites: PA6,6/maleated SEBS/glass beads , 2001 .

[3]  F. Chang,et al.  The novel polymer electrolyte nanocomposite composed of poly(ethylene oxide), lithium triflate and mineral clay , 2001 .

[4]  S. Tjong,et al.  Structure and properties of polyamide-6/vermiculite nanocomposites prepared by direct melt compounding , 2002 .

[5]  Xiao-hui Liu,et al.  Polyamide 66/Clay Nanocomposites via Melt Intercalation , 2002 .

[6]  V. Vittoria,et al.  Phase behavior of modified montmorillonite- poly(?-caprolactone) nanocomposites , 2004 .

[7]  T. Chung,et al.  Exfoliated PP/Clay Nanocomposites Using Ammonium-Terminated PP as the Organic Modification for Montmorillonite , 2003 .

[8]  Shiai Xu,et al.  Tensile deformation mechanism of polyamide 6,6/SEBS-g-MA blend and its hybrid composites reinforced with short glass fibers , 2003 .

[9]  Tibor Czigány,et al.  On the essential and non-essential work of fracture of biaxial-oriented filled PET film , 1996 .

[10]  D. R. Paul,et al.  Rubber toughening of polyamides with functionalized block copolymers: 2. Nylon-6,6 , 1992 .

[11]  M. Zanetti,et al.  Preparation and combustion behaviour of polymer/layered silicate nanocomposites based upon PE and EVA , 2004 .

[12]  Y. Mai,et al.  On the impact essential work of fracture of ductile polymers , 2001 .

[13]  E. Chiellini,et al.  Transport and mechanical properties of blends of Poly(e-caprolactone) and a modified montmorillonite - Poly(e-caprolactone) nanocomposite , 2002 .

[14]  C. Ou.  Crystallization behavior and thermal stability of poly(trimethylene terephthalate)/clay nanocomposites , 2003 .

[15]  Shanti V. Nair,et al.  Fracture resistance of polyblends and polyblend matrix composites: Part I Unreinforced and fibre-reinforced nylon 6,6/ABS polyblends , 1997 .

[16]  D. R. Paul,et al.  Rubber toughening of polyamides with functionalized block copolymers: 1. Nylon-6 , 1992 .

[17]  Y. Mai,et al.  Essential work of fracture (EWF) analysis for short glass fiber reinforced and rubber toughened nylon‐6 , 2003 .

[18]  A. Okada,et al.  Preparation and Mechanical Properties of Polypropylene−Clay Hybrids , 1997 .

[19]  Liqun Zhang,et al.  Preparation and characterization of Rubber-Clay nanocomposites , 2000 .

[20]  W. Pan,et al.  PP–PP-g-MAH–Org-MMT nanocomposites. I. Intercalation behavior and microstructure , 2003 .

[21]  Won‐Ki Lee,et al.  Environmentally friendly polymer hybrids Part I Mechanical, thermal, and barrier properties of thermoplastic starch/clay nanocomposites , 2003 .

[22]  S. Tjong,et al.  Preparation and characterization of melt-compounded polyethylene/vermiculite nanocomposites , 2003 .

[23]  Donald R Paul,et al.  Thermal expansion behavior of nylon 6 nanocomposites , 2002 .

[24]  B. Gnade,et al.  Exfoliated and intercalated polyamide-imide nanocomposites with montmorillonite , 2002 .

[25]  R. Mülhaupt,et al.  Synthesis and thermal behaviour of layered silicate-EVA nanocomposites , 2001 .

[26]  Y. Mai,et al.  Impact fracture toughness of short glass fiber-reinforced polyamide 6,6 hybrid composites containing elastomer particles using essential work of fracture concept , 2003 .

[27]  D. R. Paul,et al.  Polycarbonate nanocomposites. Part 1. Effect of organoclay structure on morphology and properties , 2003 .

[28]  J. Williams,et al.  Determination of the fracture toughness of polymeric films by the essential work method , 1994 .

[29]  G. Brennan,et al.  Polyamide-12 layered silicate nanocomposites by melt blending , 2003 .

[30]  L. J. Lee,et al.  Morphology and mechanical properties of polypropylene/organoclay nanocomposites , 2002 .

[31]  Y. Mai,et al.  Effects of gauge length and strain rate on Fracture toughness of polyethylene terephthalate glycol (PETG) film using the essential Work of Fracture analysis , 2000 .

[32]  D. R. Paul,et al.  Effect of polyamide functionality on the morphology and toughness of blends with a functionalized block copolymer , 1992 .

[33]  S. Tjong,et al.  Preparation and properties of polyamide 6/polypropylene–vermiculite nanocomposite/polyamide 6 alloys , 2002 .

[34]  Y. Mai,et al.  A new approach to polymer/montmorillonite nanocomposites , 2003 .

[35]  Makoto Kato,et al.  Preparation and properties of EPDM–clay hybrids , 2002 .

[36]  S. Wong,et al.  Effect of rubber functionality on microstructures and fracture toughness of impact-modified nylon 6,6/polypropylene blends : 1. Structure -property relationships , 1999 .

[37]  Donald R Paul,et al.  Effect of glass fiber surface chemistry on the mechanical properties of glass fiber reinforced, rubber-toughened nylon 6 , 2002 .

[38]  Jae Whan,et al.  Glass fiber-reinforced polyamide composites toughened with ABS and EPR-g-MA , 2001 .

[39]  S. Tjong,et al.  Impact‐modified polypropylene/vermiculite nanocomposites , 2003 .

[40]  Shiai Xu,et al.  Mechanical behavior and fracture toughness evaluation of maleic anhydride compatibilized short glass fiber/SEBS/polypropylene hybrid composites , 2002 .

[41]  R. Li,et al.  Morphological behaviour and instrumented dart impact properties of β-crystalline-phase polypropylene , 1996 .

[42]  D. R. Paul,et al.  Fracture behavior of nylon 6/ABS blends compatibilized with an imidized acrylic polymer , 2000 .

[43]  J. Karger‐Kocsis,et al.  Fracture behaviour of polypropylene/glass bead elastomer composites by using the essential work-of-fracture method , 1998 .

[44]  D. M. Laura.  Mechanical properties of glass fiber reinforced, rubber toughened nylon 6 , 2002 .

[45]  R. Hertzberg,et al.  The fracture behavior of rubber‐toughened, short‐fiber composites of nylon 6,6 , 1994 .

[46]  S. Bourbigot,et al.  Flammability of polyamide-6/clay hybrid nanocomposite textiles , 2002 .

[47]  Shing Chung Josh Wong,et al.  Essential Fracture Work of Short Fiber Reinforced Polymer Blends , 1999 .

[48]  S. Nair,et al.  Deformation mechanism and fibre toughening of nylon 6,6 , 1994 .

[49]  Shiai Xu,et al.  Short glass fiber-reinforced polyamide 6,6 composites toughened with maleated SEBS , 2002 .

[50]  S. Wong,et al.  Characterization of microstructures and toughening behavior of fiber-containing toughened nylon 6,6 , 2002 .

[51]  S. Hashemi,et al.  Plane-stress essential work of ductile fracture for polycarbonate , 1992 .

[52]  S. Hashemi.  Plane-stress fracture of polycarbonate films , 1993, Journal of Materials Science.

[53]  Y. Mai,et al.  Impact specific essential work of fracture of compatibilized polyamide‐6 (PA6)/poly(phenylene ether) (PPE) blends , 2001 .

[54]  Emmanuel P. Giannelis,et al.  Polymer Layered Silicate Nanocomposites , 1996 .

[55]  R. J. Gaymans,et al.  Nylon-6/rubber blends: 6. Notched tensile impact testing of nylon-6/(ethylene-propylene rubber) blends , 1994 .

[56]  Thomas J. Pinnavaia,et al.  Nanolayer Reinforcement of Elastomeric Polyurethane , 1998 .

[57]  D. R. Paul,et al.  Nylon 6 nanocomposites by melt compounding , 2001 .

[58]  D. R. Paul,et al.  Impact-modified nylon 6/polypropylene blends: 2. Effect of reactive functionality on morphology and mechanical properties , 1995 .

[59]  Fracture toughness and fracture mechanisms of PBT/PC/IM blend , 1993 .

[60]  M. Arroyo,et al.  Organo-montmorillonite as substitute of carbon black in natural rubber compounds , 2003 .

[61]  W. Perkins.  Polymer toughness and impact resistance , 1999 .

[62]  Tianxi Liu,et al.  Thermal degradation behavior of polyamide 6/clay nanocomposites , 2003 .

[63]  S. Tjong,et al.  Novel Preparation and Properties of Polypropylene−Vermiculite Nanocomposites , 2002 .

[64]  W. C. Tjiu,et al.  Preparation and characterization of nylon 11/organoclay nanocomposites , 2003 .

[65]  S. Hashemi.  Work of fracture of PBT/PC blend: Effect of specimen size, geometry, and rate of testing , 1997 .

[66]  J. W. Barlow,et al.  Effect of glass fiber and maleated ethylene–propylene rubber content on the impact fracture parameters of nylon 6 , 2001 .

[67]  Work of fracture of polystyrene/high density polyethylene blends compatibilized by triblock copolymer , 2000 .

[68]  G. Vigier,et al.  Mechanical properties of clay‐reinforced polyamide , 2002 .