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CONTINUOUS FABRICATION SYSTEM AND METHOD FOR HIGHLY ALIGNED POLYMER FILMS

United States Patent Application

20150321408
A1
View the Complete Application at the US Patent & Trademark Office
Process for continuous fabrication of highly aligned polymer films. A polymer-solvent solution is subjected to a high shear, high temperature, Couette flow to extrude a thin film having polymer chain disentanglement. The extruded thin film is frozen and the solvent is allowed to evaporate to form a dried film. The dried film is mechanically drawn using a constant force, adaptive-thickness drawing system to align polymer molecular chains through plastic deformation. A suitable polymer is ultra-high molecular weight polyethylene.
Chen, Gang (Carlisle, MA), Wang, Jianjian (Cambridge, MA), Tong, Jonathan Kien-Kwok (Cambridge, MA), Ghasemi, Hadi (Boston, MA), Huang, Xiaopeng (Cambridge, MA), Loomis, James (Boston, MA), Xu, Yanfei (Cambridge, MA)
14/ 700,284
April 30, 2015
[0002] This invention was made with government support under Grant No. DE-EE0005756 awarded by the Department of Energy. The government has certain rights in the invention.