Influence of Discharge Atmosphere on the Ageing Behaviour of Plasma-Treated Polylactic Acid

被引：67
作者：
Morent, R. [1 ]
De Geyter, N. [1 ]
Trentesaux, M. [3 ]
Gengembre, L. [3 ]
Dubruel, P. [2 ]
Leys, C. [1 ]
Payen, E. [3 ]
机构：
[1] Univ Ghent, Fac Engn, Dept Appl Phys, RUPT, B-9000 Ghent, Belgium
[2] Univ Ghent, Fac Sci, Dept Organ Chem, Polymer Chem & Biomat Res Grp PBM, B-9000 Ghent, Belgium
[3] Univ Sci & Technol Lille, CNRS, UMR 8181, Unite Catalyse & Chim Solide, F-59655 Villeneuve Dascq, France
来源：
PLASMA CHEMISTRY AND PLASMA PROCESSING | 2010年 / 30卷 / 04期
关键词：
Polylactic acid (PLA); Ageing; Dielectric barrier discharge; Contact angle; X-ray photoelectron spectroscopy; DIELECTRIC BARRIER DISCHARGE; PRESSURE GLOW-DISCHARGE; L-LACTIC ACID; SURFACE MODIFICATION; POLY(L-LACTIC ACID); POLYMER-FILMS; GRAFT-POLYMERIZATION; PART II; HELIUM; AIR;
D O I：
10.1007/s11090-010-9233-8
中图分类号：
TQ [化学工业];
学科分类号：
0817 ;
摘要：
The effect of a plasma treatment on polymers is not permanent, since the treated surfaces tend to recover to the untreated state (ageing process). This paper investigates the influence of discharge atmosphere on the ageing behaviour of plasma-treated PLA foils: these foils are plasma-treated with a DBD in 4 different atmospheres (air, nitrogen, argon and helium) and are subsequently stored in air. Results of contact angle and XPS measurements show that the discharge gas has a significant influence on the ageing behaviour of the PLA foils. This influence can be explained by the different cross-linking degree of the plasma-treated surfaces: helium and argon plasma-treated PLA films have a high cross-linking degree, which limits polymer chain mobility and as a result reduces the ageing process. In contrast, the ageing behaviour of air and nitrogen plasma-treated films is more pronounced due to their low cross-linking degree.
引用
收藏
页码：525 / 536
页数：12
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