Marine anti-biofouling efficacy of amphiphilic poly(coacrylate) grafted PDMSe: effect of graft molecular weight

作者：Kuliasha Cary A; Finlay John A; Franco Sofia C; Clare Anthony S; Stafslien Shane J; Brennan Anthony B^*

来源：Biofouling, 2017, 33(3): 252-267.

DOI：10.1080/08927014.2017.1288807

• Grafting
• amphiphilic poly(co-acrylate)
• molecular weight
• poly(dimethyl siloxane)
• anti-biofouling
• engineered microtopography

There is currently strong motivation due to ecological concerns to develop effective anti-biofouling coatings that are environmentally benign, durable, and stable for use by the maritime industry. The antifouling (AF) and fouling-release (FR) efficacy of amphiphilic, charged copolymers composed of similar to 52% acrylamide, similar to 34% acrylic acid, and similar to 14% methyl acrylate grafted to poly(dimethyl siloxane) (PDMSe) surfaces were tested against zoospores of the green alga Ulva linza and the diatom Navicula incerta. The biofouling response to molecular weight variation was analyzed for grafts ranging from similar to 100 to 1,400 kg mol(-1), The amphiphilic coatings showed a marked improvement in the FR response, with a 55% increase in the percentage removal of diatoms and increased AF efficacy, with 92% reduction in initial attachment density of zoospores, compared to PDMSe controls. However, graft molecular weight, in the range tested, was statistically insignificant. Grafting copolymers to PDMSe embossed with the Sharklet (TM) microtopography did not produce enhanced AF efficacy.

• 出版日期2017