Abstract
This study aimed at examining the properties of blends of semi-crystalline polydioxanone (PDX) and amorphous poly(methyl dioxanone) (PMeDX). The authors show that low amounts of PMeDX, within 15 wt% acts as plasticizer to high molar mass PDX as confirmed by an increase in Young's modulus of films. The plasticizing effect on blends increased with decreasing reduced viscosity of PMeDX. Mechanical tests showed overall reduced tensile properties of the blends. Viscosity analysis coupled with SEM and AFM indicated immiscibility of the blends over the whole range of compositions. Blend samples with higher PMeDX contents degraded at faster rates with profiles differing from PDX.
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