Amphiphilic Pentablock Copolymers and their Blends with PDMS for Antibiofouling Coatings

作者：Martinelli Elisa; Guazzelli Elisa; Bartoli Cristina; Gazzarri Matteo; Chiellini Federica; Galli Giancarlo^*; Callow Maureen E; Callow James A; Finlay John A; Hill Sophie

来源：Journal of Polymer Science Part A: Polymer Chemistry , 2015, 53(10): 1213-1225.

DOI：10.1002/pola.27554

• amphphiles
• antibiofouling
• block copolymers
• fluoropolymers
• protein adsorption
• Ulva linza

Well-defined amphiphilic pentablock copolymers Siy-(EGx-FAz)(2) composed of polysiloxane (Si), polyethylene glycol (EG), and perfluorohexylethyl polyacrylate (FA) blocks are synthesized by ATRP of FA monomer starting from a difunctional bromo-terminated macroinitiator. Diblock copolymers EGx-FAz are also synthesized as model systems. The block copolymers are used, either alone or blended with a PDMS matrix in varied loadings, to prepare antibiofouling coatings. Angle-resolved XPS and contact angle measurements show that the coating surface is highly enriched in fluorine content but undergoes reconstruction after contact with water. Protein adsorption experiments with human serum albumin and calf serum highlight that diblock copolymers resist protein adhesion better than do pentablock copolymers. Blending of the pentablock copolymer with PDMS results in increased protein adsorption. By contrast, the PDMS-matrix coatings show high removal percentages of sporelings of the green fouling alga Ulva linza.

• 出版日期2015-5-15