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Paper Information

Journal:   IRANIAN POLYMER JOURNAL (ENGLISH)   2004 , Volume 13 , Number 6; Page(s) 485 To 494.
 
Paper: 

A DEVELOPED METHOD FOR STUDYING THE SURFACE ENERGY VARIATION ON HIGH DENSITY POLYETHYLENE

 
 
Author(s):  AHMADI MOGHADAM MAHDI*, MIRHABIBI A.R.
 
* Department of Coating and Corrosion, Iran Colour Research Centre (ICRC), Tehran, I.R. Iran
 
Abstract: 

In the gas flame treatment of low surface free energy (SE) substrates, such as high-density polyethylene (HDPE), problems might arise from under or over flaming, oxygen concentration differences in and around of the flame and etc. Consequently, in printing applications, the possible variation of induced SE existing on the surface, could cause distortion on printed letters. In this research, a new method based on the wetting and spreading phenomena was developed to display and study details of the SE variation on HDPE flame-treated substrates. It was an easy and quick method. Results showed good agreements with previous works done on the flame treatment characteristic. The optimal flaming was achieved, while the substrate surface had been positioned about 10 to 12 mm below the tip of the flame blue part, and also when the flaming speed had been controlled about 80 mm/s. The results from the adhesion strength test supported the optimum situations found previously by others. It is also hoped that this new method could be capable of estimating the critical SE of solid surfaces in the future works.

 
Keyword(s): SURFACE FREE ENERGY, SURFACE TENSION, WETTING, SPREADING, FLAME TREATMENT
 
References: 
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