Toughening and brittle-tough transition in polyamide 12-organoclay/maleated styrene-ethylene-co-butylene-styrene nanocomposites

Tough nanocomposites based on polyamide 12 (PA12) can be obtained by the addition of a maleated rubber to a highly dispersed PA12‐clay nanocomposite by melt processing. The nanostructure behavior was evaluated by X‐ray diffraction and transmission electron microscopy. The results showed that the org...

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Vydané v:Polymer engineering and science Ročník 53; číslo 6; s. 1187 - 1195
Hlavní autori: González, Imanol, Zabaleta, Asier, Eguiazábal, José Ignacio
Médium: Journal Article
Jazyk:English
Vydavateľské údaje: Hoboken Wiley Subscription Services, Inc., A Wiley Company 01.06.2013
Wiley
Society of Plastics Engineers, Inc
Blackwell Publishing Ltd
Predmet:
Applied sciences
Clay
Compatibility
Composites
Composition
Diffraction
Dispersions
Ductility
Exact sciences and technology
Forms of application and semi-finished materials
Identification and classification
Mechanical properties
Nanocomposites
Nanostructure
Nanostructured materials
Phase transformations (Statistical physics)
Polyamide resins
Polymer industry, paints, wood
Polymeric composites
Polymers
Rubber
Stiffness
Strength of materials
Styrene
Surfactants
Technology of polymers
Transmission electron microscopy
Spain
Strengthening
Organic clay
SEBS
Dispersion degree
Mechanical properties
Thermoplastic rubber
Dispersion reinforced material
Organic anhydride
Experimental study
Compatibilizer
Functional polymer
Composite material
Triblock copolymer
Impact strength
Morphology
Aliphatic polymer
Concentration effect
Amide 12 polymer
Extrusion
Nanocomposite
Technological properties
ISSN:0032-3888, 1548-2634
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Shrnutí:Tough nanocomposites based on polyamide 12 (PA12) can be obtained by the addition of a maleated rubber to a highly dispersed PA12‐clay nanocomposite by melt processing. The nanostructure behavior was evaluated by X‐ray diffraction and transmission electron microscopy. The results showed that the organoclay was highly dispersed and mostly located in the PA12 matrix due to the larger affinity between the polyamide and the clay, but some of the organoclay was also present in the polymer/polymer interface. The presence of organoclay slightly increased the dispersed particle size, indicating decreased compatibilization. This was attributed to a partial shielding of maleic anhydride compatibilizer by surfactant. The addition of the elastomer considerably improved the toughness of the PA12‐based nanocomposites, maintaining its stiffness; i.e., the nanocomposites with 25% rubber content showed an increase of 25‐fold of notched impact strength of the PA12 matrix, meanwhile ductility and stiffness remained constant. This allowed us to obtain toughened PA12 PNs throughout a large range of strain rate and a modulus similar to that of the unmodified PA12. The position of the brittle/tough transition in terms of rubber content, determined by the standard notched Izod test (25% mSEBS) is basically the same as that determined by the essential work of fracture procedure. POLYM. ENG. SCI., 2013. © 2012 Society of Plastics Engineers
Bibliografia:istex:4095488091F55E1D64A0D88570781436F7CB703E
Basque Government - No. IT-234-07
ark:/67375/WNG-DNNX78K7-B
Spanish Ministerio de Economía y Competitividad - No. MAT2010-16171
ArticleID:PEN23372
University of the Basque Country - No. UFI11/56
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 14
ObjectType-Article-2
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ISSN:0032-3888
1548-2634
DOI:10.1002/pen.23372