PVDF-TrFE Co-Polymer Having Improved Ferroelectric Properties, Methods of Making a PVDF-TrFE Co-Polymer Having Improved Ferroelectric Properties and Methods of Changing the End Group of a PVDF-TrFE Co-Polymer

摘要

A method of exchanging or transforming end groups in and/or improving the ferroelectric properties of a PVDF-TrFE co-polymer is disclosed. A bulky or chemically dissimilar end group, such as an iodine, sulfate, aldehyde or carboxylic acid end group, may be transformed to a hydrogen, fluorine or chlorine atom. A method of making a PVDF-TrFE co-polymer is disclosed, including polymerizing a mixture of VDF and TrFE using an initiator, and transforming a bulky or chemically dissimilar end group to a hydrogen, fluorine or chlorine atom. A PVDF-TrFE co-polymer or other fluorinated alkene polymer is also disclosed. The co-polymer may be used as a ferroelectric, electromechanical, piezoelectric or dielectric material in an electronic device.

主权项

1. A method of exchanging an end group of a polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) co-polymer, the end group comprising:
exchanging an iodine or hydroxyl end group on a polyvinylidene fluoride-trifluoroethylene (PVDF-TrFE) co-polymer with hydrogen, fluorine or chlorine, and isolating or purifying the PVDF-TrFE co-polymer having the hydrogen, fluorine or chlorine end group.