The effect of vacuum‐ultraviolet laser wavelengths on the surface treatment of polyolefinic polymers

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Abstract
The laser‐induced modification of the surface morphology of poly(propylene) fibers and films was investigated. It is known that strongly absorbing fibers such as poly(ethylene terephthalate) and polyamide obtain characteristic surface morphologies after treatment with 193 or 248 nm laser irradiation. Polyolefinic material cannot be modified directly (i.e., without doping) by irradiation with these wavelengths. Therefore experiments were carried out using a 157 nm F2‐laser. After irradiation in a vacuum chamber at fluences in excess of 50 mJ/cm2 poly(propylene) also reveals the well‐known surface morphology. Compared with aromatic polymers a rather high number of pulses is needed to generate the effect. © 1993 John Wiley & Sons, Inc.

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