Atmospheric pressure plasma treatment of polymeric powders

被引：32

作者：

Put, S. ^{[1
]}

Bertels, C. ^{[1
]}

Vanhulsel, A. ^{[1
]}

机构：

[1] Vlaamse Instelling Technol Onderzoek, B-2400 Mol, Belgium

来源：

SURFACE & COATINGS TECHNOLOGY | 2013年 / 234卷

关键词：

Atmospheric plasma; Surface modification; Polymer powders; Up-scaling; FLUIDIZED-BED REACTOR; DIELECTRIC BARRIER DISCHARGE; SURFACE MODIFICATION; POLYETHYLENE POWDER; OXYGEN-PLASMA; HDPE POWDER; GLOW PLASMA; NITROGEN; AIR; WETTABILITY;

D O I：

10.1016/j.surfcoat.2013.02.006

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

An atmospheric pressure plasma jet is adapted in order to treat polymeric powders. Nitrogen is used as the main operating gas. Ultra high molecular weight polyethylene powder particles are treated in this modified plasma jet reactor. In order to have a reasonable contact time between particles and plasma, the powder is passed 10 times through the reactor. Treated powders are characterized with XPS and some quick tests for the assessment of the wettability of the powder, like a dispersion test in water. After plasma-treatment, about 7 at.% oxygen and 1 at.% nitrogen are incorporated at the particle surface. An improved dispersability of treated PE in water is observed and the treatment is found to be stable in time. The amount of oxygen groups at the particle surface can be increased by adding CO2 in the afterglow of the plasma jet. In order to increase the efficiency of the treatment, the reactor is enlarged and an improved wettability can be achieved by 1 pass through this enlarged system. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：76 / 81

页数：6

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