Pubblicazione scientifica

One Step Forward towards the Development of Eco-Friendly Antifouling Coatings: Immobilization of a Sulfated Marine-Inspired Compound

FILONE TECNOLOGICO	TEMA
economia circolare e sostenibilità

RIASSUNTO

Marine biofouling represents a global economic and ecological challenge and few eco-friendly antifouling agents are available. The aim of this work was to establish the proof of concept that a recently synthesized nature-inspired compound (gallic acid persulfate, GAP) can act as an eco-friendly and effective antifoulant when immobilized in coatings through a non-release strategy, promoting a long-lasting antifouling effect. The synthesis of GAP was optimized to provide quantitative yields. GAP water solubility was assessed, showing values higher than 1000 mg/mL. GAP was found to be stable in sterilized natural seawater with a half-life (DT50) of 7 months. GAP was immobilized into several commercial coatings, exhibiting high compatibility with different polymeric matrices. Leaching assays of polydimethylsiloxane and polyurethane-based marine coatings containing GAP confirmed that the chemical immobilization of GAP was successful, since releases up to fivefold lower than the conventional releasing systems of polyurethane-based marine coatings were observed. Furthermore, coatings containing immobilized GAP exhibited the most auspicious anti-settlement effect against Mytilus galloprovincialis larvae for the maximum exposure period (40 h) in laboratory trials. Overall, GAP promises to be an agent capable of improving the antifouling activity of several commercial marine coatings with desirable environmental properties.

DATA

Data di pubblicazione: 25/09/2020

AUTORI

VILAS-BOAS CATIA
CARVALHAL FRANCISCA
PEREIRA BEATRIZ
CARVALHO SILVIA
SOUSA EMILIA
PINTO MADALENA M M
CALHORDA MARIA JOSE
VASCONCELOS VITOR
ALMEIDA JOANA R
SILVA ELISABETE R
CORREIA-DA-SILVA MARTA

ENTE DI AFFERENZA

LAB DE QUIM ORGANICA E PHARM DEPARTAMENTO DE CIENCIAS QUIM FACULDADE DE FARMACIA UNIV DO PORTO R JORGE DE VITERBO FERREIRA 228 4050 313 PORTO PORTUGAL CATIABOAS94 GMAIL COM CV B FRANCISCA CARVALHAL GMAIL COM FC ESOUSA FF UP PT ES MADALENA FF UP PT MMMP
CIIMAR—CENTRO INTERDISCIPLINAR DE INVESTIGACAO MARINHA E AMBIENTAL AVENIDA GENERAL NORTON DE MATOS SN 4450-208 MATOSINHOS PORTUGAL VMVASCON@FC UP PT VV JOANA REIS ALMEIDA@GMAIL COM JRA
BIOISI—INSTITUTO DE BIOSISTEMAS E CIENCIAS INTEGRATIVAS DEPARTAMENTO DE QUIMICA E BIOQUIMICA FACULDADE DE CIENCIAS UNIVERSIDADE DE LISBOA CAMPO GRANDE LISBOA 1749-016 PORTUGAL BEATRIZMMGPEREIRA@GMAIL COM BP MJCALHORDA@FC UL PT MJC
CQB—CENTRO DE QUIMICA E BIOQUIMICA DEPARTAMENTO DE QUIMICA E BIOQUIMICA FACULDADE DE CIENCIAS UNIVERSIDADE DE LISBOA CAMPO GRANDE LISBOA 1749-016 LISBOA PORTUGAL SCFCARVALHO@FC UL PT
DEPARTAMENTO DE BIOLOGIA FACULDADE DE CIENCIAS UNIV DO PORTO

RIVISTA

Marine Drugs, 18(10), 489

IMPACT FACTOR

3,810

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