Blending of High Performance Polymers, LCPs, aromatic heterocyclics, can provide an attractive route to improved performance at lower cost. Blending of polyimides with higher temperature polymers such as m-PBI provides improved temperature capability in complex systems but test the limits of polymer blend theory and often lead to compositions on the edge of metastability. Blending of mesogenic polyesters (LCPs) with conventional polymers show limited if any miscibility but can provide compatible, multiphase behavior with processing or performance advantages. Blending of all aromatic LCPs results in behavior highly dependent on processing conditions and demonstrate a competition between miscibility and transesterification, depending on the blend process details. While systems have not yet been identified with improved cost-performance, the potential for unusual behavior, coupled with interesting and unexpected chemical and physical behavior renders these systems of recurring academic and commercial interest.

Blending high performance polymers for improved performance

254th National Meeting (2017)

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