2005 Volume 18 Issue 2 Pages 267-272
Methane and ethylene were plasma-polymerized onto polyethylene (PE) and polypropylene (PP) substrates. Several properties of the deposited films, such as deposition behavior, density, oxygen permeability, and adhesivity, were investigated. The deposition rate of ethylene was found to be about 4-5 times greater than that of methane. The density of plasma-polymerized ethylene was determined to be 1.00 g/cm3. Adhesivity of plasma-polymerized ethylene films on high-density PE (HDPE) and PP was high enough when O2 pretreatment was preceded. Without O2 pretreatment, the adhesivity on HDPE was slightly better than that on PP, and a higher adhesivity on HDPE was observed for the film plasma-polymerized at a higher plasma-energy density with low ethylene flow rate. Oxygen permeability of plasma-polymerized low-density PE (LDPE) film was reduced considerably by the deposition of ethylene-plasma-polymer films.
