Degradable polyurethane based on star-shaped polyester polyols (trimethylolpropane and ɛ-caprolactone) for marine antifouling

Yi, Jie; Huang, Congshu; Zhuang, Haiyan; Gong, Haimei; Zhang, Chuyi; Ren, Runtao; Ma, Yupu

doi:10.1016/j.porgcoat.2015.05.029

Cited by 27 publications

(16 citation statements)

References 37 publications

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“…The higher crosslink density could retard the diffusion of water molecules into PU films. Furthermore, the higher crosslink density led to restriction in the polymer chain mobility and a decrease in the hydrolytic degradation of PU coating . Therefore, PU/γ‐irradiated FWMCNT samples up to 100 KGy, which have the highest crosslinking, are better for coating ship hulls.…”

Section: Resultsmentioning

confidence: 99%

Application of polyurethane/gamma‐irradiated carbon nanotubes composites as antifouling coat

2018

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The aim of this study is to avoid or reduce the risks of biofouling of ship hulls, using polyurethane/γ‐irradiated functionalized multiwall carbon nanotubes (PU/FMWCNT) nanocomposites as a coating for wood. These nanocomposites were characterized by Fourier transform infrared spectroscopy (FTIR) measurements, transmission electron microscopy (TEM), and field emission scanning electron microscopy (FESEM), and hardness, adhesion, and bending of the coated samples were examined. The antifouling ability of PU/γ‐irradiated FMWCNTs was studied by using an algae test. FTIR proved the presence of COOH group on the surface of MWCNT, while the FESEM results showed good dispersion of FMWCNT in polyurethane matrix. Mechanical properties of the coated wooden samples were improved; the samples showed good hardness and very good adhesion, and reasonable flexural modulus. The antifouling property of the coatings showed that 0.1 and 0.2 wt% FMWCNTs immobilized on polyurethane composite and irradiated for 100 kGy, were the most efficient antifouling coat when immersed in Chlorella vulgaris microalgae. POLYM. COMPOS., 39:E1196–E1207, 2018. © 2018 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

Application of polyurethane/gamma‐irradiated carbon nanotubes composites as antifouling coat

2018

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“…The major properties of the paints come from the binder [ 42 , 43 ]. Some potential parameters involved in antifouling activity of erodible paints are the hydration, the erosion and the biocide release [ 10 , 12 , 16 , 32 , 44 ]. These properties are suspected of being related to the binder crystallinity [ 12 , 39 , 41 , 45 ].…”

Section: Resultsmentioning

confidence: 99%

“…These have traditionally relied upon the release of biocides (organic biocides called booster biocides and copper) to kill or inhibit the growth of fouling organisms [ 5 ]. In recent years, other antifouling polymer coatings, without any release mechanism or with biocides having short environmental half-lives are being developed [ 6 , 7 , 8 , 9 , 10 , 11 , 12 ].…”

Section: Introductionmentioning

confidence: 99%

Influence of Biodegradable Polymer Properties on Antifouling Paints Activity

et al. 2017

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Abstract:The development of new antifouling paints requires understanding the parameters involved in antifouling activity and to develop new analytical tools for their evaluation. A series of biodegradable poly(ε-caprolactone-co-δ-valerolactone) copolymers varying by molecular weight and composition were synthesized, characterized and formulated as antifouling paints. The physico-chemical properties such as hydration, degradation, erosion and lixiviation of paints were studied. Microfouling (bacteria and microalgae) was observed by microscopic observations in a short delay, whereas macrofouling colonization was observed by visual inspection during one year. The antifouling activity of paints was modified by varying the composition and molecular weight of copolymer. The crystallinity appears to play a major role in antifouling activity, however the involvement of other properties such as hydration, degradation or erosion remains difficult to understand. Confocal laser scanning and scanning electron microscopes were used for the evaluation of antifouling paints. Results show that microalgae seem to be a pertinent indicator of antifouling activity.

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“…Tributyltin was one of the most widely used biocides for antifouling paints [ 5 ]. Many researchers have found negative effects of tributyltin due to its toxicity to other marine organisms [ 5 ] for example, it induces imposex and intersex conditions in marine snails via mechanisms of endocrine disruption. In 2003, the international maritime organization (IMO) banned tributyltin from any antifouling application [ 6 ].…”

Section: Introductionmentioning

confidence: 99%

Simple Preparation of Polydimethylsiloxane and Polyurethane Blend Film for Marine Antibiofouling Application

et al. 2021

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A key way to prevent undesirable fouling of any structure in the marine environment, without harming any microorganisms, is to use a polymer film with high hydrophobicity. The polymer film, which was simply prepared from a blend of hydrophobic polydimethylsiloxane elastomer and hydrophilic polyurethane, showed improved properties and economic viability for antifouling film for the marine industry. The field emission scanning electron microscope and energy dispersive X-ray spectrometer (FESEM and EDX) results from the polymer blend suggested a homogenous morphology and good distribution of the polyurethane disperse phase. The PDMS:PU blend (95:5) film gave a water contact angle of 103.4° ± 3.8° and the PDMS film gave a water contact angle of 109.5° ± 4.2°. Moreover, the PDMS:PU blend (95:5) film could also be modified with surface patterning by using soft lithography process to further increase the hydrophobicity. It was found that PDMS:PU blend (95:5) film with micro patterning from soft lithography process increased the contact angle to 128.8° ± 1.6°. The results from a field test in the Gulf of Thailand illustrated that the bonding strength between the barnacles and the PDMS:PU blend (95:5) film (0.07 MPa) were lower than the bonding strength between the barnacles and the carbon steel (1.16 MPa). The barnacles on the PDMS:PU blend (95:5) film were more easily removed from the surface. This indicated that the PDMS:PU blend (95:5) exhibited excellent antifouling properties and the results indicated that the PDMS:PU blend (95:5) film with micro patterning surface could be employed for antifouling application.

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Degradable polyurethane based on star-shaped polyester polyols (trimethylolpropane and ɛ-caprolactone) for marine antifouling

Cited by 27 publications

References 37 publications

Application of polyurethane/gamma‐irradiated carbon nanotubes composites as antifouling coat

Application of polyurethane/gamma‐irradiated carbon nanotubes composites as antifouling coat

Influence of Biodegradable Polymer Properties on Antifouling Paints Activity

Simple Preparation of Polydimethylsiloxane and Polyurethane Blend Film for Marine Antibiofouling Application

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