Full text loading...
Recovery of PMMA upon immersing into room temperature ethanol.
(Color online) Weight gain of PMMA and typical DSC results. (a) Weight gain ratio vs. immersing time; (b1) DSC curve of original PMMA; and (b2) DSC curve of saturated PMMA.
(Color online) Illustration of underlying mechanism. (a) original amorphous PMMA; (b) uniaxial stretching at high temperatures; (c) cooling and unloading; (d) ethanol penetrating and outer layer softening; (e) buckling at a critical penetration depth; and (f) final shape after recovery. Shaded area is with ethanol.
(Color online) Ethanol penetration front line in PMMA. (a) In a 250% pre-stretched (in vertical direction) PMMA; (b) ethanol penetration depth vs. immersion time; and (c) illustration of cross-section for modeling.
Shape recovery sequence upon immersing into 120 °C silicone oil (from left to right). The PMMA sample (128 × 20 × 3 mm) was pre-stretched to 100% at 120 °C (left).
Article metrics loading...