PDMS-based films containing surface-active amphiphilic block copolymers to combat fouling from barnacles B. amphitrite and B. improvisus

POLYMER

卷:108

Article

Oliva, Matteo^1,2  Martinelli, Elisa^1,2  Galli, Giancarlo^1,2  Pretti, Carlo³ 

[1] Univ Pisa, Dipartimento Chim & Chim Ind, I-56124 Pisa, Italy

[2] Univ Pisa, UdR Pisa INSTM, I-56124 Pisa, Italy

[3] Univ Pisa, Dipartimento Sci Vet, I-56126 Pisa, Italy

关键词: ATRP block copolymer;    Amphiphilic copolymer;    Surface-active copolymer;    Balanus amphitrite;    Balanus improvisus;    Antifouling;   

DOI  :  10.1016/j.polymer.2016.12.021

来源: Elsevier

【 摘 要 】

Surface-active amphiphilic diblock copolymers, Si-EFS14 and Si-EFS71, consisting of a poly(dimethyl siloxane) block (degree of polymerisation 11) and a poly(4-(triethyleneglycol monomethyl ether)-2,3,5,6-tetrafluorostyrene) block (average degree of polymerisation 14 and 71) were synthesised by ATRP. Films were prepared by incorporating each copolymer (4 wt%) into a PDMS matrix, which was then condensation cured. Bioassays were performed on the films using two barnacle species, Balanus amphitrite and Balanus improvisus, at different stages of their life cycles. The cyprids of B. improvisus settled on all test surfaces in higher numbers than those of B. amphitrite. However, the juveniles of B. improvisus were more easily removed from the films containing the copolymer Si-EFS14 than from those containing the copolymer Si-EFS71. An XPS analysis revealed that the near-surface region of copolymer Si-EFS71 was enriched in oxyethylenic chains and became even more populated by these hydrophilic chains after the films were immersed in water. (C) 2016 Elsevier Ltd. All rights reserved.

【 授权许可】

Free