氧在LDPE中的深度扩散-- O2大气压后放电:AR-XPS和Tof-SIMS技术的互补方法
In-depth diffusion of oxygen into LDPE exposed to an Ar--O2 atmospheric post-discharge: a complementary approach between AR-XPS and Tof-SIMS techniques
摘要:
氧向低密度聚乙烯膜中的深度扩散是在大气等离子体炬的后放电中进行的,所述大气等离子体炬以氩气作为载气并且具有或不具有氧作为反应气体。的聚合物表面和散装的化学和结构特性的等离子体参数(处理时间,功率和反应气体流速)方面进行了研究。XPS和傅里叶变换红外光谱分析之间有很好的相关性。通过角分辨XPS和飞行时间SIMS研究了氧在聚合物中的渗透深度。结果表明,在常压等离子体处理过程中,氧可穿透低密度聚乙烯20--40nm,这取决于等离子体的条件。
英文摘要:
The in-depth oxygen diffusion into a low density polyethylene film is performed in the post-discharge of an atmospheric plasma torch, supplied in argon as carrier gas and with or without oxygen as reactive gas. The chemical and structural properties of the polymer surface and bulk are studied in terms of plasma parameters (treatment time, power, and reactive gas flow rate). A good correlation between XPS and Fourier transform infrared spectroscopy analyses is demonstrated. The penetration depth of oxygen into the bulk of the polymer is investigated by angle resolved-XPS and time-of-flight SIMS. It is shown that, depending on the plasma conditions, oxygen could penetrate up to 20--40 nm into the low density polyethylene during the atmospheric plasma treatment.
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