The effect of high-pressure carbon dioxide treatment on the crystallization behavior and mechanical properties of poly(l-lactic acid)/poly(methyl methacrylate) blends

Polymer ◽  
2006 ◽  
Vol 47 (11) ◽  
pp. 3954-3960 ◽  
Author(s):  
Shin-ichi Hirota ◽  
Takatoshi Sato ◽  
Yoichi Tominaga ◽  
Shigeo Asai ◽  
Masao Sumita
Keyword(s):  
Mechanical Properties ◽  
Carbon Dioxide ◽  
High Pressure ◽  
Lactic Acid ◽  
Methyl Methacrylate ◽  
Crystallization Behavior ◽  
Poly Methyl Methacrylate

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

2018 ◽  
Vol 773 ◽  
pp. 51-55
Author(s):  
Jasmine Pongkasem ◽  
Saowaroj Chuayjuljit ◽  
Phasawat Chaiwutthinan ◽  
Amnouy Larpkasemsuk ◽  
Anyaporn Boonmahitthisud
Keyword(s):  
Mechanical Properties ◽  
Lactic Acid ◽  
Impact Strength ◽  
Methyl Methacrylate ◽  
Tensile Properties ◽  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Poly Lactic Acid ◽  
Poly Methyl Methacrylate ◽  
The Impact

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.

Phase Behavior of Poly(methyl methacrylate)/Poly(vinylidene fluoride) Blends in the Presence of High-Pressure Carbon Dioxide

2003 ◽  
Vol 204 (17) ◽  
pp. 2064-2077 ◽  
Author(s):  
Teri A. Walker ◽  
Yuri B. Melnichenko ◽  
George D. Wignall ◽  
J. S. Lin ◽  
Richard J. Spontak
Keyword(s):  
Carbon Dioxide ◽  
High Pressure ◽  
Methyl Methacrylate ◽  
Phase Behavior ◽  
Vinylidene Fluoride ◽  
Poly Methyl Methacrylate ◽  
Poly Vinylidene Fluoride
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