Thermal properties of nylon6/ABS polymer blends: Compatibilizer effect

Nylon6/ABS binary blends are incompatible and need to be compatibilized to achieve better performance under impact tests. Poly(methyl methacrylate/maleic anhydride) (MMA-MA) is used in this work to compatibilize in situ nylon6/ABS immiscible blends. The MA functional groups, from MMA-MA copolymers,...

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Bibliographic Details
Published in:Journal of materials science 2004-02, Vol.39 (4), p.1173-1178
Main Authors: Araújo, E. M, Hage, E., Jr, Carvalho, A. J. F
Format: Article
Language:English
Subjects:
adhesion
Anhydrides
Applied sciences
Compatibility
Compatibilizers
composite polymers
Copolymers
Crystallization
Differential scanning calorimetry
Exact sciences and technology
Functional groups
Graft copolymers
Impact tests
Maleic anhydride
maleic anhydrides
Materials science
melting
Miscibility
Morphology
nylon
Nylon 6
Organic polymers
Physicochemistry of polymers
Polymer blends
Polymethyl methacrylate
Properties and characterization
thermal analysis
Thermal and thermodynamic properties
thermal properties
Thermodynamic properties
Transmission electron microscopy
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Summary:Nylon6/ABS binary blends are incompatible and need to be compatibilized to achieve better performance under impact tests. Poly(methyl methacrylate/maleic anhydride) (MMA-MA) is used in this work to compatibilize in situ nylon6/ABS immiscible blends. The MA functional groups, from MMA-MA copolymers, react with NH₂ groups giving as products nylon molecules grafted to MMA-MA molecules. Those molecular species locate in the nylon6/ABS blend interfacial region increasing the local adhesion. MMA-MA segments are completely miscible with the SAN rich phase from the ABS. The aim of this work is to study the effects of ABS and compatibilizing agent on the melting and crystallization of nylon6/ABS blends. This effect has been investigated by differential scanning calorimetry (DSC) and dynamic mechanical thermal analysis (DMTA). Incorporation of this compatibilizer and ABS showed little effect on the melting behavior of the PA6 crystalline phase, in general. DMTA analysis confirmed the system immiscibility and showed evidence of compatibility between the two phases, nylon6 and ABS, produced by MMA-MA copolymer presence. The nylon6/ABS blend morphology, observed by transmission electron microscopy (TEM), changes significantly by the addition of the MMA-MA compatibilizer. A better dispersion of ABS in the nylon6 phase is observed.
ISSN:0022-2461
1573-4803
DOI:10.1023/B:JMSC.0000013872.86575.36