Mechanical, morphological, and solid-state viscoelastic responses of poly(lactic acid)/ethylene-co-vinyl-acetate super-tough blend reinforced with halloysite nanotubes
Source abstract
Abstract
In this work, ternary nanocomposites of poly(lactic acid)/ethylene-co-vinyl-acetate (PLA/EVA, 70:30) containing varying concentrations (0.4–9.1 wt%) of halloysite nanotubes (HNTs) were prepared through melt compounding. Enhanced tensile modulus and impact strength demonstrated the strengthening and toughening effects of halloysite in the nanocomposites, simultaneously. The impact-fractured surface morphologies and halloysite-induced morphological changes of the nanocomposites were evaluated using scanning electron microscopy (SEM) and transmission electron microscopy (TEM), respectively. FT-IR investigation revealed interactions between HNT and PLA. Glass transition behavior of the nanocomposites, as shown by dynamic mechanical analysis (DMA) and differential scanning calorimetry (DSC), presents strong evidence in favor of phase interaction and the reinforcing effect of halloysite. Enhanced tensile strength and elongation-at-break demonstrated the toughening effect of halloysite.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: biodegradable polymer synthesis and properties · Polymer Nanocomposites and Properties · Clay minerals and soil interactions
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