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Polymer surface modification using diblock copolymers containing azobenzene

2005; Wiley; Volume: 43; Issue: 22 Linguagem: Inglês

10.1002/pola.21092

1099-0518

Tomohide Yoshida, Mototsugu Doi, Shokyoku Kanaoka, Sadahito Aoshima,

Polymer Surface Interaction Studies

A surface-modification technique using a block copolymer of 4-[2-(vinyloxy)ethoxy]azobenzene (AzoVE) with 2-methoxyethyl vinyl ether (MOVE) is shown to permit the dynamic control of polymer surface properties such as water wettability. Poly{4-[2-(vinyloxy) ethoxy]azobenzene} is highly compatible with and diffuses readily into a range of polymers, including polyolefins, poly(ethylene terephthalate), polystyrene, and polysiloxane. In combination with an incompatible functional polymer such as poly(2-methoxyethyl vinyl ether), however, the poly{4-[2-(vinyloxy)ethoxy]azobenzene} segments act as an effective anchor for the functional polymer to fix it onto the surface of a polymer substrate.