| 초록 |
One component's preferential surface migration is thermodynamically driven by surface energy reduction in the polymer blend. It is clear that cohesive energy is the most dominating factor among surface energy factors, but entropically forced surface migration allows the surface enrichment with a component with high cohesive energy. Therefore, studying the surface segregation of a polymer with unique architecture in a linear polymer matrix is important in additive design and surface treatment. This study built experimental evidence that component with cyclic architecture preferentially segregates to the surface. Specifically, we demonstrate the surface segregation of a poly(ethyl vinyl ether) based cyclic/linear polymer when blended with poly(vinylpyrrolidone). X-ray photoelectron spectroscopy studies confirmed the results. |
