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Nylon 6 reinforced with acrylic polymer nanoparticles. Thermal properties and nano structure

Published online by Cambridge University Press:  11 March 2011

Estefania Huitron-Rattinger ,
Bonifacio Alvarado-Tenorio  and
Angel Romo-Uribe
Estefania Huitron-Rattinger
Affiliation:
Departamento de Ingeniería Química Metalúrgica, Facultad de Química, Universidad Nacional Autónoma de México, 04510 México D.F., MEXICO. Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca Mor. 62210, MEXICO.
Bonifacio Alvarado-Tenorio
Affiliation:
Departamento de Ingeniería Química Metalúrgica, Facultad de Química, Universidad Nacional Autónoma de México, 04510 México D.F., MEXICO. Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca Mor. 62210, MEXICO.
Angel Romo-Uribe*
Affiliation:
Instituto de Ciencias Físicas, Universidad Nacional Autónoma de México, Cuernavaca Mor. 62210, MEXICO.
*
*To whom all correspondence should be addressed: aromo-uribe@fis.unam.mx
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Abstract

The correlation of thermal properties and nanostructure of nylon 6 (denoted PA6) reinforced with polymer nanoparticles (denoted PNP, size~8 nm) has been investigated. PNPs are highly crosslinked acrylic-based polymers synthesized by the Rohm and Haas Co. PNPs and those grafted with maleic anhydride (denoted PNP-g-MA) were each one dispersed into a commercial PA 6 matrix by melt extrusion, at a concentration of 3 wt%. Thermal analysis showed that the PNPs increased the thermal stability of PA6 and reduced the melting and crystallization temperatures as well as the enthalpy. Small-angle light scattering showed that the PNPs crystallize into a spherulitic morphology, typical of PA6. Isothermal crystallization studies showed that the PNPs act as nucleating agents, accelerating the rate of crystallization. Wide-angle X-ray scattering showed that the composites crystallize in the α-form, and the PNPs reduced the degree of crystallinity, in agreement with thermal analysis results. The smaller degree of crystallinity was also reflected in the long range spacing, it was also reduced by the presence of the PNPs as measured directly by small-angle X-ray scattering.

Keywords

polymermicrostructurex-ray diffraction (XRD)
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1312: Symposium HH/II/JJ – Polymer-Based Materials and Composites—Synthesis, Assembly and Applications , 2011 , mrsf10-1312-ii03-19
Copyright
Copyright © Materials Research Society 2011

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References

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