Synthesis of Polydimethylsiloxane-Modified Polyurethane and the Structure and Properties of Its Antifouling Coatings
Polydimethylsiloxane (PDMS) could be used to improve the antifouling properties of the fouling release coatings based on polyurethane (PU). A series of polydimethylsiloxane-modified polyurethane coatings were synthesized with various PDMS contents, using the solvent-free method. The effects of PDMS...
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doaj-2bd21bc2a9b24d0d869f4a5e5d9075422020-11-25T00:11:26ZengMDPI AGCoatings2079-64122018-04-018515710.3390/coatings8050157coatings8050157Synthesis of Polydimethylsiloxane-Modified Polyurethane and the Structure and Properties of Its Antifouling CoatingsZhan-Ping Zhang0Xiao-Fei Song1Li-Ying Cui2Yu-Hong Qi3Department of Materials Science and Engineering, Dalian Maritime University, Dalian 116026, ChinaDepartment of Materials Science and Engineering, Dalian Maritime University, Dalian 116026, ChinaDepartment of Materials Science and Engineering, Dalian Maritime University, Dalian 116026, ChinaDepartment of Materials Science and Engineering, Dalian Maritime University, Dalian 116026, ChinaPolydimethylsiloxane (PDMS) could be used to improve the antifouling properties of the fouling release coatings based on polyurethane (PU). A series of polydimethylsiloxane-modified polyurethane coatings were synthesized with various PDMS contents, using the solvent-free method. The effects of PDMS content and seawater immersion on the chain structure and surface morphology were investigated by confocal laser scanning microscopy (CLSM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and X-ray diffraction (XRD). Based on the measurements of contact angles of deionized water and diiodomethane, surface free energies of the coatings were estimated according to the Owens two-liquid method. The PDMS-modified polyurethane exhibited lower surface free energy and a lower glass transition temperature than polyurethane. The presence of PDMS increased the degree of microphase separation, and enhanced the water resistance of the coatings. The optimum amount of PDMS reduced the elastic modulus and increased the ductility of the coating. The presence of PDMS benefited the removal of weakly attached organisms. Panel tests in the Yellow Sea demonstrated the antifouling activity of the PDMS-modified polyurethane.http://www.mdpi.com/2079-6412/8/5/157polydimethylsiloxane-modified polyurethaneantifoulingcoatingstructuremorphologyin-siteseawater immersion |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Zhan-Ping Zhang Xiao-Fei Song Li-Ying Cui Yu-Hong Qi |
spellingShingle |
Zhan-Ping Zhang Xiao-Fei Song Li-Ying Cui Yu-Hong Qi Synthesis of Polydimethylsiloxane-Modified Polyurethane and the Structure and Properties of Its Antifouling Coatings Coatings polydimethylsiloxane-modified polyurethane antifouling coating structure morphology in-site seawater immersion |
author_facet |
Zhan-Ping Zhang Xiao-Fei Song Li-Ying Cui Yu-Hong Qi |
author_sort |
Zhan-Ping Zhang |
title |
Synthesis of Polydimethylsiloxane-Modified Polyurethane and the Structure and Properties of Its Antifouling Coatings |
title_short |
Synthesis of Polydimethylsiloxane-Modified Polyurethane and the Structure and Properties of Its Antifouling Coatings |
title_full |
Synthesis of Polydimethylsiloxane-Modified Polyurethane and the Structure and Properties of Its Antifouling Coatings |
title_fullStr |
Synthesis of Polydimethylsiloxane-Modified Polyurethane and the Structure and Properties of Its Antifouling Coatings |
title_full_unstemmed |
Synthesis of Polydimethylsiloxane-Modified Polyurethane and the Structure and Properties of Its Antifouling Coatings |
title_sort |
synthesis of polydimethylsiloxane-modified polyurethane and the structure and properties of its antifouling coatings |
publisher |
MDPI AG |
series |
Coatings |
issn |
2079-6412 |
publishDate |
2018-04-01 |
description |
Polydimethylsiloxane (PDMS) could be used to improve the antifouling properties of the fouling release coatings based on polyurethane (PU). A series of polydimethylsiloxane-modified polyurethane coatings were synthesized with various PDMS contents, using the solvent-free method. The effects of PDMS content and seawater immersion on the chain structure and surface morphology were investigated by confocal laser scanning microscopy (CLSM), atomic force microscopy (AFM), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA) and X-ray diffraction (XRD). Based on the measurements of contact angles of deionized water and diiodomethane, surface free energies of the coatings were estimated according to the Owens two-liquid method. The PDMS-modified polyurethane exhibited lower surface free energy and a lower glass transition temperature than polyurethane. The presence of PDMS increased the degree of microphase separation, and enhanced the water resistance of the coatings. The optimum amount of PDMS reduced the elastic modulus and increased the ductility of the coating. The presence of PDMS benefited the removal of weakly attached organisms. Panel tests in the Yellow Sea demonstrated the antifouling activity of the PDMS-modified polyurethane. |
topic |
polydimethylsiloxane-modified polyurethane antifouling coating structure morphology in-site seawater immersion |
url |
http://www.mdpi.com/2079-6412/8/5/157 |
work_keys_str_mv |
AT zhanpingzhang synthesisofpolydimethylsiloxanemodifiedpolyurethaneandthestructureandpropertiesofitsantifoulingcoatings AT xiaofeisong synthesisofpolydimethylsiloxanemodifiedpolyurethaneandthestructureandpropertiesofitsantifoulingcoatings AT liyingcui synthesisofpolydimethylsiloxanemodifiedpolyurethaneandthestructureandpropertiesofitsantifoulingcoatings AT yuhongqi synthesisofpolydimethylsiloxanemodifiedpolyurethaneandthestructureandpropertiesofitsantifoulingcoatings |
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