Ultrasound assisted process for increasing the crystallinity of slow crystallizable polymers
AssigneeThe University of Akron
InventorsAvraam Isayev, Horst Hans Rieckert
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Abstract
In general, the present invention provides a process for increasing the crystallinity of a slow crystallizable polymer. In this process, at least one slow crystallizable polymer is introduced to a pressurized treatment zone along a flow direction, and is subjected, at the pressurized treatment zone, to longitudinal vibrations of ultrasonic waves. In a particularly preferred process, the ultrasonic waves propagate in a direction perpendicular to the flow direction of the at least one slow crystallizable polymer.
Claims4
A crystallized polymer prepared by a process for increasing the crystallinity of a crystallizable polymer comprising the steps of:
- introducing at least one crystallizable polymer to a pressurized treatment zone along a flow direction;
- subjecting the at least one crystallizable polymer, at the pressurized treatment zone, to longitudinal vibrations of ultrasonic waves.
A process for increasing the crystallinity of a crystallizable polymer comprising the steps of:
- introducing at least one crystallizable polymer to a pressurized treatment zone along a flow direction;
- subjecting the at least one crystallizable polymer, at the pressurized treatment zone, to longitudinal vibrations of ultrasonic waves, wherein the ultrasonic waves propagate in a direction perpendicular to the flow direction of the at least one crystallizable polymer.
A process for making a polymer product of increased crystallinity comprising the steps of:
- introducing at least one crystallizable polymer to a pressurized treatment zone along a flow direction;
- subjecting the at least one crystallizable polymer, at the pressurized treatment zone, to longitudinal vibrations of ultrasonic waves, wherein the ultrasonic waves propagate in a direction perpendicular to the flow direction of the at least one crystallizable polymer;
- and
- thereafter immediately shaping the at least one crystallizable polymer into a desired product.
Dependencies are inferred from the claim text.