Effects of compatibilizer on the mechanical, rheological, and shape memory behaviors of poly(lactic acid) and poly(MnBM) blends

Abstract

The effects of compatibilizer on the morphological, mechanical, rheological, and shape memory properties of poly(lactic acid) (PLA) and poly(methyl methacrylate-block-n-butyl acrylate-block-methyl methacrylate) (Poly(MnBM)) (80/20) blend were investigated. From the morphological results, the addition of 1 wt% SAN-MAH as a compatibilizer showed minimum Poly(MnBM) domain size among the blends with the SAN-MAH in the amounts from 0 to 7 wt%. Tensile and flexural strengths, and complex viscosity of the blends showed maximum when the SAN-MAH content was 1 wt%, which suggested the increased compatibility between the PLA and Poly(MnBM) phases. From the above results, the optimum compatibilizer content of the PLA and Poly(MnBM) blend was 1 wt%. The recovery ratio of tensile energy was found to be 83 and 56% for the PLA/Poly(MnBM) blend with and without the SAN-MAH (1 wt%), respectively. Upon blending the PLA and Poly(MnBM) (80/20) with SAN-MAH (1 wt%), the increase of recovered tensile energy was observed, and that the brittleness of PLA was improved to be ductile which resulted an improved shape memory behavior of the blend.

Characteristics of the Waste Wood Biomass and Its Effect on the Properties of Wood Sanding Dust/Recycled PP Composite

“…This behavior of the biomass in the composite is similar to the effect of a compatibilizer, which increases the compatibility of the hydrophilic filler with the hydrophobic polymer matrix at the interface. Similar to our case, the excess of the content of compatibilizers in composite systems leads to the deterioration of the mechanical properties of WPCs [ 61 ]. A scheme of the possible interaction of the WWB with the activated wood dust (AWD) and rPP is shown in Figure 10 .…”

Highly toughened poly(lactic acid) blends prepared by reactive blending with a renewable poly(ether‐block‐amide) elastomer

“…In recent years, more and more biodegradable polymers were used to toughen PLA. [26][27][28][29][30][31][32][33][34] Ojijo Vincent et al prepared PLA/PBSA blends. 29 For a blend containing 40 wt% PBSA and 0.6 wt% chain extender, the impact strength of PLA was increased from 4.6 to 38.4 kJ/m 2 .…”