Insight into the effect of He atmospheric pressure plasma jets on low-density polyethylene surfaces by fixed-point treatment
Insight into the effect of He atmospheric pressure plasma jets on low-density polyethylene surfaces by fixed-point treatment
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通过定点处理深入了解 He 大气压等离子体射流对低密度聚乙烯表面的影响
DOI：
10.1088/1361-6463/abf676
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发表时间：
2021-04
期刊：
影响因子：
--
通讯作者：
Chang Zheng-Shi
中科院分区：
文献类型：
--
作者：
Li Guo-Qiang;Chen Xi;Zhu Yan-Rong;Guo Hong-Lin;Zhao Ni;Chang Zheng-Shi
为了进一步研究常压等离子体射流（APPJ）对低密度聚乙烯（LDPE）薄膜表面的改性作用及其机理，本文进行了一系列的实验和模拟。工作气体采用流速为6.0标准升/分钟的层流氦气，峰峰电压为10.1 kV，频率为20 kHz的交流电压产生均匀发光样He APPJ。在膜上的固定点He APPJ处理15 min后，从该点开始分析不同径向位置的表面性能。本研究采用水接触角（WCA）测量、x射线光电子能谱和原子力显微镜进行。WCA和表面自由能（SFE）结果表明，改性效果范围大于APPJ在表面的扩散范围。在径向上，表面形貌的变化不是单调的，而是有极值点：表面形貌的变化是先蚀刻后沉积；APPJ将含氧官能团C - O、C=O/O - C - O和O - C=O加入到LDPE表面，它们在表面的分布是不同的。为了探究造成差异的原因，我们利用ORCA软件的量子化学模拟分析来解释表面能的变化与含氧官能团之间的关系。模拟结果表明，C-O对LDPE表面SFE的影响较大。
In order to further investigate the modification effect of atmospheric pressure plasma jets (APPJ) on the surface of low-density polyethylene (LDPE) film and related mechanisms, a series of experiments and simulations were carried out in this paper. A laminar helium flow with a flow rate of 6.0 standard liters per minute was used as a working gas and a homogeneous glow-like He APPJ was generated by an AC voltage with a peak-to-peak voltage of 10.1 kV and a frequency of 20 kHz. After 15 min He APPJ treatment at a fixed point on the film, the surface properties at different radial positions from this point were analyzed. This study was performed using water contact angle (WCA) measurement, x-ray photoelectron spectroscopy and atomic force microscopy. The results of WCA and surface free energy (SFE) indicate that the modification effect range is larger than APPJ’s spread range on the surface. Along the radial direction, the surface properties did not change monotonously but had extreme points: the change of the surface morphology was first etching and then deposition; APPJ incorporated oxygen containing functional groups including C–O, C=O/O–C–O and O–C=O into the LDPE surface, and their distributions on the surface were different. To explore what caused the difference, quantum chemical simulation analysis by ORCA software was used to explain the relationship between the change of surface energy and oxygen-containing functional groups. The simulation showed that C–O has more influence on the SFE of the LDPE surface.
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影响因子：
1.7
作者：
Sun Jie;Qiu Yiping
通讯作者：
Sun Jie;Qiu Yiping
DOI：
--
发表时间：
2002
期刊：
--
影响因子：
--
作者：
R. Dorai
通讯作者：
R. Dorai
DOI：
10.1088/0022-3727/34/18/307
发表时间：
2001-09
期刊：
Journal of Physics D
影响因子：
--
作者：
M. Shenton;M. Lovell-Hoare;G. Stevens
通讯作者：
M. Shenton;M. Lovell-Hoare;G. Stevens
影响因子：
3.5
作者：
A. V. Deynse;N. Geyter;C. Leys;R. Morent
通讯作者：
A. V. Deynse;N. Geyter;C. Leys;R. Morent
影响因子：
3.5
作者：
P. Luan;G. Oehrlein
通讯作者：
P. Luan;G. Oehrlein