formgedächtnisartige

Formgedächtnisartige refers to a type of polymer that exhibits a shape memory effect. These materials have the ability to be deformed into a new shape and then, upon exposure to a specific stimulus, return to their original, pre-programmed shape. This phenomenon is often referred to as "shape memory." The original shape is typically fixed during a process called programming, which involves heating the polymer above its transition temperature, deforming it, and then cooling it down below the transition temperature while maintaining the deformed shape.

The stimulus that triggers the recovery of the original shape can vary depending on the specific type of formgedächtnisartige. Common stimuli include heat, light, or changes in pH. When the stimulus is applied, the polymer undergoes a reversible change in its molecular structure, allowing it to "remember" and return to its original configuration. This behavior is analogous to shape memory alloys, but formgedächtnisartige are typically lighter, more flexible, and can be processed more easily.

The applications for formgedächtnisartige are diverse and continue to expand. They are used in medical devices such as self-expanding stents and surgical tools, where their ability to change shape in response to body temperature is beneficial. They are also found in actuators, robotics, smart textiles, and even in consumer products for applications like self-assembling structures or temperature-responsive elements. The development of new formgedächtnisartige materials with tailored properties is an active area of research.