Effects of Poly(Methyl Methacrylate)-Encapsulated Nanosilica on Mechanical Properties of Poly(Lactic Acid)/Ethylene Vinyl Acetate Nanocomposites

Jasmine Pongkasem; Saowaroj Chuayjuljit; Phasawat Chaiwutthinan; Amnouy Larpkasemsuk; Anyaporn Boonmahitthisud

doi:10.4028/www.scientific.net/KEM.773.51

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HomeKey Engineering MaterialsKey Engineering Materials Vol. 773Effects of Poly(Methyl Methacrylate)-Encapsulated...

Effects of Poly(Methyl Methacrylate)-Encapsulated Nanosilica on Mechanical Properties of Poly(Lactic Acid)/Ethylene Vinyl Acetate Nanocomposites

Abstract:

In this study, poly(lactic acid) (PLA) was melt mixed with three weight percentages (10–30wt%) of ethylene vinyl acetate copolymer (EVA) in an internal mixer, followed by a compression molding. According to a better combination of mechanical properties, the 90/10 (w/w) PLA/EVA was selected for preparing hybrid nanocomposites with three loadings (1, 3 and 5 parts per hundred of resin , phr) of poly(methyl methacrylate)-encapsulated nanosilica (PMMA-nSiO₂). The nanolatex of PMMA-nSiO₂ was synthesized via in situ differential microemulsion polymerization. The obtained PMMA-nSiO₂ showed a core-shell morphology with nSiO₂ as a core and PMMA as a shell, having an average diameter of 43.4nm. The influences of the EVA and PMMA-nSiO₂ on the impact strength and the tensile properties of the PLA/EVA nanocomposites were studied and compared. It is found that the impact strength and the tensile properties of the 90/10 (w/w) PLA/EVA were improved with the appropriate amounts of the EVA and PMMA-nSiO₂.

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Periodical:

Key Engineering Materials (Volume 773)

Pages:

51-55

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.773.51

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Online since:

July 2018

Authors:

Jasmine Pongkasem, Saowaroj Chuayjuljit, Phasawat Chaiwutthinan, Amnouy Larpkasemsuk, Anyaporn Boonmahitthisud*

Keywords:

Differential Microemulsion Polymerization, Ethylene Vinyl Acetate Copolymer, Poly(Lactic Acid), Poly(Methyl Methacrylate)-Encapsulated Nanosilica

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