Abstract
Polybenzoxazole (PBO) fiber membranes with submicron-scale diameter were fabricated from the polyhydroxyamide (PHA) precursor by electrospinning and thermal cyclization processes. In order to improve the strength of the membrane MWCNTs was blended with PHA in the mixture solvent of dimethylacetamide (DMAc) and THF. The morphology, thermal stability, mechanical properties and dielectric constant of MWCNTs / PHA and MWCNTs / PBO membranes were characterized. For MWCNTs/PBO membranes, improved mechanical property and low dielectric constant could be achieved.
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