Details

Autor(en) / Beteiligte

• Guo, Hongshuang
• Liu, Xinmeng
• Zhao, Weiqiang
• Xie, Changhai
• Zhu, Yingnan
• Wen, Chiyu
• Li, Qingsi
• Sui, Xiaojie
• Yang, Jing
• Zhang, Lei

Titel

A polyvinylpyrrolidone-based surface-active copolymer for an effective marine antifouling coating

Ist Teil von

• Progress in organic coatings, 2021-01, Vol.150, p.105975, Article 105975

Ort / Verlag

Lausanne: Elsevier B.V

Erscheinungsjahr

2021

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• [Display omitted] •A novel surface-active copolymer is designed based on PVP and PDMS.•The surface-renewable coating based on the copolymer presents an improved antifouling property.•The coating shows an excellent antifouling performance in long-term marine test. Currently, it is highly desirable to develop a stable and effective antifouling coating in maritime industries. In this work, a novel surface-active copolymer basing on hydrophilic polyvinylpyrrolidone (PVP) and hydrophobic poly(dimethylsiloxane) (PDMS) was designed and incorporated into a crosslinked PDMS matrix to form a surface-renewable antifouling coating. In the copolymer, PVP segments possessed a chemical stability and could prevent the settlement of fouling organisms attributable to its strong hydrophilicity; PDMS endowed the copolymer with compatibility to PDMS matrix and could efficiently reduce the fouling adhesion strength attributable to the low surface energy. Based on the surface-active copolymer, the coating could be reconstructed underwater in response to the environment forming a renewable surface to promote the fouling-release property. In addition, a set of controllable composition coatings were prepared to investigate the effects of surface chemistry on antifouling and fouling-release performance. Laboratory bioassays against marine unicellular diatom adhesion (∼99 % reduction) and mimetic barnacle attachment (∼81 % reduction) demonstrated an outstanding antifouling and fouling-release property of the copolymer-based coating compared to pristine PDMS, and the coating with a higher PVP content exhibited a better performance. Moreover, a long-term antifouling capability in marine field test (∼4 months) was also demonstrated. This work may offer a promising solution to the problems induced by marine biofouling.