Poly(lactic acid) (PLA) is melt mixed with polyamide 11 (PA11) to obtain a heat-resistant fullybio-based blend with PLA as the dominant component. The goal is achieved by adding smallamounts of organoclay (OMMT), which is used to manipulate the blend microstructure. Theselective positioning of the OMMT inside the PA11 and at the PLA/PA11 interface turns theblend morphology from drop/matrix into co-continuous at high PLA content (70 wt%).The OMMT-rich PA11 framework that interpenetrates the major PLA phase effectivelycontributes to bear stresses, and the nanocompositeblend keeps its structural integrity up to160 8C, i.e., about 100 8C above the PLA glasstransition.
Heat-Resistant Fully Bio-Based Nanocomposite Blends Based on Poly(lactic acid)
Serena Coiai;Sabrina C. Carroccio;
2014
Abstract
Poly(lactic acid) (PLA) is melt mixed with polyamide 11 (PA11) to obtain a heat-resistant fullybio-based blend with PLA as the dominant component. The goal is achieved by adding smallamounts of organoclay (OMMT), which is used to manipulate the blend microstructure. Theselective positioning of the OMMT inside the PA11 and at the PLA/PA11 interface turns theblend morphology from drop/matrix into co-continuous at high PLA content (70 wt%).The OMMT-rich PA11 framework that interpenetrates the major PLA phase effectivelycontributes to bear stresses, and the nanocompositeblend keeps its structural integrity up to160 8C, i.e., about 100 8C above the PLA glasstransition.| File | Dimensione | Formato | |
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