Dipartimento di Chimica e Chimica Industriale and UdR Pisa INSTM, Universita di Pisa, Pisa, Italy.
Biofouling. 2011 May;27(5):529-41. doi: 10.1080/08927014.2011.584972.
Amphiphilic diblock copolymers, Sz6 and Sz12, consisting of a poly(dimethylsiloxane) block (average degree of polymerisation = 132) and a PEGylated-fluoroalkyl modified polystyrene block (Sz, average degree of polymerisation = 6, 12) were prepared by atom transfer radical polymerization (ATRP). Coatings were obtained from blends of either block copolymer (1-10 wt%) with a poly(dimethylsiloxane) (PDMS) matrix. The coating surface presented a simultaneous hydrophobic and lipophobic character, owing to the strong surface segregation of the lowest surface energy fluoroalkyl chains of the block copolymer. Surface chemical composition and wettability of the films were affected by exposure to water. Block copolymer Sz6 was also blended with PDMS and a 0.1 wt% amount of multiwall carbon nanotubes (CNT). The excellent fouling-release (FR) properties of these new coatings against the macroalga Ulva linza essentially resulted from the inclusion of the amphiphilic block copolymer, while the addition of CNT did not appear to improve the FR properties.
由聚二甲基硅氧烷（PDMS）嵌段（平均聚合度=132）和聚乙二醇化氟烷基改性聚苯乙烯嵌段（Sz，平均聚合度=6,12）组成的两亲性嵌段共聚物 Sz6 和 Sz12 是通过原子转移自由基聚合（ATRP）制备的。涂层是由嵌段共聚物（1-10wt%）与 PDMS 基质的混合物获得的。由于嵌段共聚物中具有低表面能的氟烷基链在表面上的强烈表面分离，涂层表面呈现出疏水性和亲脂性的双重特性。薄膜的表面化学组成和润湿性受水暴露的影响。Sz6 嵌段共聚物还与 PDMS 和 0.1wt%多壁碳纳米管（CNT）混合。这些新涂层对大型海藻石莼的出色防污（FR）性能主要归因于两亲性嵌段共聚物的包含，而 CNT 的添加似乎并未改善 FR 性能。
