2024
DOI: 10.1088/1361-665x/ad5505
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Diffusion of small-size aliphatic alcohols and the chemical actuation of shape memory polyurethane

Yucen Shen,
Hakan Dumlu,
Fathollah Varnik
et al.

Abstract: Three types of aliphatic alcohols (methanol, ethanol, and 1-propanol) are used to actuate a programmed ESTANE ETE 75DT3 (abb. SMP-E), a polyether-based polyurethane shape memory polymer (SMP). In this paper, we analyze the diffusion behavior of these small molecules in SMP E and the relationship between the solvent diffusion and shape recovery using a weight gain study and small-angle x-ray scattering (SAXS). From the results, all three alcohols show behavior similar to Fickian diffusion in SMP-E. During the d… Show more

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