138 HIGH PERFORMANCE POLYMERS
composites have potential applications in electronic
devices [62].
5.4.3 Fibers
PPS fibers can be manufactured by melt spinning.
A further enhancement of the tensile properties can be
achieved by drawing and annealing [63].
The effect of the molecular weight of the PPS and
parameters adjusted in the melt spinning process on
the properties of the final fibers have been elucidated.
Structure-property-relationships were established by
the use of tensile testing, differential scanning
calorimetry, polarized light optical microscopy, and
wide-angle X-ray scattering.
A combination of higher molecular weight samples
and spinning at higher take-up speeds improves the
tensile properties of the PPS fibers [63].
Also, the effect of one-zone ...