Studies on polymer-metal interfaces Part 1. Comparison of adsorption behavior between oxygen and nitrogen functionality in model copolymers onto metal surfaces
Dh. Kim et Wh. Jo, Studies on polymer-metal interfaces Part 1. Comparison of adsorption behavior between oxygen and nitrogen functionality in model copolymers onto metal surfaces, POLYMER, 40(14), 1999, pp. 3989-3994
The effect of oxygen or nitrogen containing functionality in model copolyme
rs on the interfacial characteristics between the copolymers and metals was
examined by adhesion strength and infrared spectroscopy. The adhesion stre
ngth with both copper and aluminum increased with increasing the vinyl pyri
dine (VP) content in poly (styrene-co-vinyl pyridine) copolymers (SVP). The
adhesion strength between poly (styrene-co-acrylic acid) copolymers (SAA)
and both metals increased at lower acrylic acid (AA) contents in the copoly
mers, but the adhesion strength remained almost unchanged at higher AA cont
ents due to competition between interaction of free carboxylic acid with me
tal and self-association of acrylic acid units in the copolymer through dim
erization of carboxylic acids. From the reflection-absorption infrared (RAI
R) spectroscopy, it is concluded that the enhancement of adhesion strength
by the incorporation of comonomers is caused by specific interaction betwee
n the copolymers and metals and orientation behavior of carbonyl groups in
AA units and pyridine rings in VP units to the metal surfaces. (C) 1999 Els
evier Science Ltd. All rights reserved.