Mechanisms of atmospheric pressure plasma treatment of BOPP
Mechanisms of atmospheric pressure plasma treatment of BOPP
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DOI：
10.1002/ppap.201700051
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发表时间：
2018
影响因子：
3.5
通讯作者：
D. Sawtell;Zaenab Abd-Allah;J. Bradley;Glen T. West;P. Kelly
中科院分区：
文献类型：
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作者：
D. Sawtell;Zaenab Abd-Allah;J. Bradley;Glen T. West;P. Kelly
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA，魏因海姆。通过等离子体处理提高聚合物的表面能是一个工业上具有重要意义的过程。人们对这个过程背后的机制知之甚少，人们致力于解决水接触角随着处理和表面化学变化而减小的问题。这里介绍的工作通过使用结晶双向拉伸聚丙烯 (BOPP) 薄膜来识别等离子体引起的结构变化，解决了这种表面能增加的机制。通过 ATR-FTIR 光谱观察到 BOPP 薄膜的结晶度增加，表明等离子体优先氧化 BOPP 薄膜的非晶区域。这种晶体结构的变化与 XRD 峰位移相关，这意味着晶体区域弛豫到先前被非晶 BOPP 占据的区域。表面能增加的趋势也与结晶度的有效增加相关。
© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. Surface energy increase of polymers with plasma treatment is an industrially significant process. The mechanisms behind this process are little understood, with work addressing the water contact angle decrease with treatment and changes in surface chemistry. Work presented here addresses the mechanism of this surface energy increase, by using crystalline biaxially orientated polypropylene (BOPP) films to identify plasma induced structural changes. Increased crystallinity of the BOPP films were observed by ATR-FTIR spectroscopy, indicating preferential oxidation of amorphous regions of the BOPP films by the plasma. This crystal structure change correlates with XRD peak shifts, implying relaxation of crystal regions into regions previously occupied by amorphous BOPP. The trend in surface energy increases also correlates with the effective increase in crystallinity.