AbstractThe microstructure of composites made from blends of poly(p‐phenylene benzobisthiazole) PBT and nylon 6,6 has been investigated with wide‐angle X‐ray diffraction, selected area electron diffraction, and small‐angle X‐ray scattering techniques. The composite samples investigated were spun in both fiber and film forms dilute solutions of methane sulfonic acid.The structure of the composites was found to be a microfibrillar network of PBT in a matrix of partially crystalline nylon 6,6. The diameters of the PBT microfibrils were in the range of 3
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