SURFACE-PROPERTIES OF POLY(ETHYLENE-TEREPHTHALATE) FILMS MODIFIED BY FAR-ULTRAVIOLET RADIATION AT 193-NM (LASER) AND 185-NM (LOW INTENSITY)
SURFACE-PROPERTIES OF POLY(ETHYLENE-TEREPHTHALATE) FILMS MODIFIED BY FAR-ULTRAVIOLET RADIATION AT 193-NM (LASER) AND 185-NM (LOW INTENSITY)
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DOI：
10.1021/j100401a028
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发表时间：
1986-05-08
影响因子：
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通讯作者：
SRINIVASAN, R
中科院分区：
文献类型：
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作者：
LAZARE, S;SRINIVASAN, R
研究了在空气中用193 nm ArF准分子激光（1012345678 W/cm ~ 2）脉冲辐射和在真空中用185 nm低强度汞灯（2.5mW/cm ~ 2）辐射所获得的聚对苯二甲酸乙二醇酯（PET）表面。XPS分析表明，这两种都是贫氧的，但由于在高强度下的非线性效应，变化的效率是强度依赖性的。当脉冲能量> 40 mJ/cm 2时产生烧蚀光分解的脉冲辐射产生粗糙表面。SEM分析表明，粗糙度（i）具有随着脉冲的积累而增加的幅度，并且在10个脉冲时达到最大值（1-2-qm间距），并且（ii）显示出一定的周期性。由于激光处理表面的化学成分不随脉冲的积累而变化，因此与水的前进接触角的增加被解释为由于粗糙度。标记反应和XPS被用来探测改性表面的反应性。对羧酸、醇和烯烃进行了定性和定量探测。激光治疗具有创造新功能的上级能力。
The surfaces of polyethyleneterephthalate) obtained by irradiation with the 193-nm pulsed radiation of the ArF excimer laser (101 234567 8W/cm2) in air or the 185-nm low-intensity (2.5 mW/cm2) radiationof the mercury lamp in a vacuum were studied and compared. The XPS analysis reveals that both are depleted in oxygen, but the efficiency of the change is intensity dependent as a result of nonlinear effects at high intensity. The pulsed radiation, which gives ablative photodecomposition when the energy of the pulse is> 40 mJ/cm2, yields a rough surface. SEM analysis shows that the roughness (i) has an amplitude which increases with the accumulation of pulses and reaches a maximum (1-2-qm spacing) at 10 pulses, and (ii) shows some periodicity. Since the chemical composition of the laser-treated surface does not varywith the accumulation of pulses, the increase in the advancing contact angle with water is interpreted as due to roughness. Labeling reactionsand XPS have been used to probe the reactivity of the modified surfaces. Carboxylic acids, alcohols, and olefins were qualitatively and quantitatively probed. The laser treatment has a superior ability to create new functionalities.