Caracterização de filmes de poliéster modificados por plasma de O2 a baixa pressão
A polyester film has a vast application field, due some properties that are inherent of this kind of material such as, good mechanical resistance, chemical resistance to acids and bases and low production cost. However, this material has some limitations as low superficial tension, flat surface,...
Na minha lista:
| Principais autores: | , , , |
|---|---|
| Formato: | article |
| Idioma: | pt_BR |
| Publicado em: |
Universidade Federal do Rio de Janeiro
|
| Assuntos: | |
| Endereço do item: | https://repositorio.ufrn.br/handle/123456789/45223 |
| Tags: |
Adicionar Tag
Sem tags, seja o primeiro a adicionar uma tag!
|
| Resumo: | A polyester film has a vast application field, due some properties that are inherent of this kind of
material such as, good mechanical resistance, chemical resistance to acids and bases and low production cost.
However, this material has some limitations as low superficial tension, flat surface, low affinity to dyers, and
poor adhesion which impede the use of the same ones for some finality as good wettability. Among the
existent techniques to increase the superficial tension, plasma as energy source is the more promising
technique, because of their versatility and for not polluting the environment. Then, due to its good
acceptance, polyester films were treated with oxygen plasma varying the treatment time from 10 to 60 min
with an increase of 10 min to each subsequent treatment. After plasma treatment the samples were
characterized by contact angle, surface tension, Raman spectroscopy, Infrared attenuated total reflection (IR ATR) and atomic force microscopy, with the aim to study the wettability increase of treated polyester films
as its variables. The plasma technique is very efficient in modifying polyester films, and this is true because
all treated films showed a wettability increase and none significant variation was observed at ageing time
plasma treated samples. So, plasma treatment contributed for wettability increase through surface functional
groups implantation as through creation of roughness at the surface plasma treated samples |
|---|