NDLI: Nanocomposites of PLA/PP blends based on sepiolite

Content Provider	Springer Nature Link
Author	Nuñez, K. Rosales, C. Perera, R. Villarreal, N. Pastor, J. M.
Copyright Year	2011
Abstract	In the present study, the effectiveness of four polymers grafted with maleic anhydride used as compatibilizers in blends with poly(lactic acid) and its composites with sepiolite as matrices was evaluated in terms of transmission and scanning electron microscopy, oscillatory shear flow and tensile properties. Two polypropylenes were used as dispersed phases in the blends prepared in a corotating twin-screw extruder. Results showed that the compatibilized blends prepared without clay have higher susceptibility to isothermal degradation and higher tensile toughness than those prepared with sepiolite. The blend with the grafted metallocene polyethylene as compatibilizer exhibited the highest tensile toughness. The composites based on polyblends with polypropylene displayed lower tensile strength and Young’s modulus values, increased values of elongation at break, tensile toughness, complex viscosity, and storage modulus compared to those of the nanocomposite of PLA. These results are related to the clay dispersion, to the type of morphology of the different blends, to the grafting degree of the compatibilizers, and to the migration of the sepiolite toward the PP interface.
Starting Page	1991
Ending Page	2016
Page Count	26
File Format	PDF
ISSN	01700839
Journal	Polymer Bulletin
Volume Number	67
Issue Number	9
e-ISSN	14362449
Language	English
Publisher	Springer-Verlag
Publisher Date	2011-09-14
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Poly(lactic acid) PP Tensile toughness Sepiolite Nancomposites Blends Polymer Sciences Physical Chemistry Characterization and Evaluation of Materials Soft and Granular Matter, Complex Fluids and Microfluidics
Content Type	Text
Resource Type	Article
Subject	Chemistry Materials Chemistry Condensed Matter Physics Polymers and Plastics

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