Optimized silyl ester diblock methacrylic copolymers: A new class of binders for chemically active antifouling coatings

Bressy, Christine; Hellio, Claire; Nguyen, Minh Ngoc; Tanguy, Brigitte; Maréchal, Jean‐Philippe; Margaillan, André

doi:10.1016/j.porgcoat.2013.12.004

Cited by 30 publications

(33 citation statements)

References 36 publications

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“…The P. brasiliense HF was tested for inhibitory activity against growth of five strains of biofilm‐forming marine bacteria (Bressy et al. ) obtained from the collection of the University of Portsmouth (School of Biological Sciences): Halomonas marina (ATCC 25374), Polaribacter irgensii (ATCC 700398), Pseudoalteromonas elyakovii (ATCC 700519), Shewanella putrefaciens (ATCC 8071), and Vibrio aestuarianus (ATCC 35048). Each treatment condition and control (culture media) was replicated six times.…”

Section: Methodsmentioning

confidence: 99%

Mevalonosomes: specific vacuoles containing the mevalonate pathway in Plocamium brasiliense cortical cells (Rhodophyta)

Paradas

Crespo

Salgado

et al. 2015

Journal of Phycology

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This paper has identified, for the first time in a member of the Rhodophyta, a vacuolar organelle containing enzymes that are involved in the mevalonate pathway-an important step in red algal isoprenoid biosynthesis. These organelles were named mevalonosomes (Mev) and were found in the cortical cells (CC) of Plocamium brasiliense, a marine macroalgae that synthesizes several halogenated monoterpenes. P. brasiliense specimens were submitted to a cytochemical analysis of the activity of the 3-hydroxy-3-methylglutaryl-CoA synthase (HMGS). Using transmission electron microscopy (TEM), we confirmed the presence of HMGS activity within the Mev. Because HMGS is necessary for the biosynthesis of halogenated monoterpenes, we isolated a hexanic fraction (HF) rich in halogenated monoterpenes from P. brasiliense that contained a pentachlorinated monoterpene as a major metabolite. Because terpenes are often related to chemical defense, the antifouling (AF) activity of pentachlorinated monoterpene was tested. We found that the settlement of the mussel Perna perna was reduced by HF treatment (2.25 times less than control; 40% and 90% of fouled surface, respectively; P = 0.001; F9,9 = 1.13). The HF (at 10 μg · mL(-1) ) also inhibited three species of fouling microalgae (Chlorarachnion reptans, Cylindrotheca cloisterium, and Exanthemachrysis gayraliae), while at a higher concentration (50 μg · mL(-1) ), it inhibited the bacteria Halomonas marina, Polaribacter irgensii, Pseudoalteromonas elyakovii, Shewanella putrefaciens, and Vibrio aestuarianus. The AF activity of P. brasiliense halogenated monoterpenes and the localization of HMGS activity inside Mev suggest that this cellular structure found in CC may play a role in thallus protection against biofouling.

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Section: Methodsmentioning

confidence: 99%

Mevalonosomes: specific vacuoles containing the mevalonate pathway in Plocamium brasiliense cortical cells (Rhodophyta)

Paradas

Crespo

Salgado

et al. 2015

Journal of Phycology

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“…Despite the importance of copolymerizations via the RDRP, fundamental copolymerization kinetic studies on such functional monomers mentioned above have not been investigated thoroughly. In fact, detailed copolymerization kinetics provides significant information on the reactivities of monomers and activated species, and ultimately on the copolymer composition and chain structure which can affect the final properties . Rather, we often refer the kinetics studies conducted by conventional free radical polymerization to predict the reactivities of reactants and structure and properties of copolymers synthesized via the RDRPs .…”

Section: Introductionmentioning

confidence: 99%

Copolymerization Kinetics of a Simple Methacrylate and Functional Comonomers Via Cu(0)‐mediated Reversible Deactivation Radical Polymerization

Kim

Choe

Son

et al. 2019

Bulletin Korean Chem Soc

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We demonstrate thorough studies on copolymerization of methyl methacrylate (MMA) with widely used commercially available functional monomers, allyl methacrylate (AMA), 2‐hydroxyethyl methacrylate (HEMA), glycidyl methacrylate (GMA) and N‐isopropyl acrylamide (NIPAM), via Cu(0)‐mediated reversible deactivation radical polymerization (Cu(0)‐RDRP), and further compared to copolymerization kinetics of MMA with ethyl methacrylate (EMA). The apparent propagation rate constants and induction periods of the copolymerizations were estimated to reveal the effect of monomer type to copolymerization kinetics. Further studies show that MMA/AMA and MMA/HEMA exhibit relatively random distributions of functional monomer units in copolymer chains; however, MMA/NIPAM does not as activated MMA and NIPAM prefer homopolymerization and crosspolymerization, respectively. Copolymerization conditions for all pairs show less reactivity differences compared to the cases of other radical‐based polymerizations, highlighting the importance of polymerization methods and conditions to control copolymer microstructure, and emphasizing the significance of deeper understanding in RDRPs.

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“…Copolymers based on hydrolysable poly(tert-butyldimethylsilyl methacrylate), Pt-BDMSMA and poly(methyl methacrylate) (PMMA) were synthesized and studied to show that they can be used as polymer binders in self-polishing antifouling coatings. Nevertheless, a major drawback of the paint films made from these copolymers is that they are quite brittle due to their high glass transition temperatures (Tg, PMMA = 100-105 ºC, Tg, Pt-BDMSMA = 135-142 ºC) [5,6]. This causes an additional utilization of plasticizers, which results in cost increases and deterioration of certain physico-mechanical properties of paint films.…”

Section: Synthesis and Characterization Of Random And Block-random DImentioning

confidence: 99%

“…In our previous works [4][5][6], we indicated that a replacement of tin in organotin compounds-based self-polishing copolymers by silicon, a more eco-friendly element, still maintained…”

Section: Introductionmentioning

confidence: 95%

Synthesis and Characterization of Random and Block-Random Diblock Silylated Terpolymers via RAFT Polymerization

Nguyen¹,

Pham²,

Le³

et al. 2018

Asian J. Chem.

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Well-defined random and block-random diblock terpolymers consisting of methyl methacrylate (MMA), butyl acrylate (BA) and tertbutyldimethylsilyl methacrylate (t-BDMSMA) were successfully synthesized by reversible addition-fragmentation chain transfer (RAFT) polymerization using 2-cyanoprop-2-yl-dithiobenzoate (CPDB) as RAFT agent.1 H NMR and GPC analyses indicated the formation of random terpolymers [P(MMA-co-BA-co-t-BDMSMA)] and block-random diblock terpolymers [(PMMA-b-P(BA-co-t-BDMSMA) and Pt-BDMSMA-b-P(BA-co-MMA)] with good control of terpolymer composition, molecular weights and molecular weight distributions (Ð < 1.20). Thermal analysis results showed that the random terpolymers exhibited only one glass transition temperature (Tg) which depends on the terpolymer composition. The (PMMA-b-P(BA-co-t-BDMSMA) block-random diblock terpolymer showed two Tg that can be attributed to two blocks of terpolymer. Meanwhile, Pt-BDMSMA-b-P(BA-co-MMA) block-random diblock terpolymer exhibited only one Tg value, which is probably due to a low proportion of Pt-BDMSMA block present in the terpolymer.

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Optimized silyl ester diblock methacrylic copolymers: A new class of binders for chemically active antifouling coatings

Cited by 30 publications

References 36 publications

Mevalonosomes: specific vacuoles containing the mevalonate pathway in Plocamium brasiliense cortical cells (Rhodophyta)

Mevalonosomes: specific vacuoles containing the mevalonate pathway in Plocamium brasiliense cortical cells (Rhodophyta)

Copolymerization Kinetics of a Simple Methacrylate and Functional Comonomers Via Cu(0)‐mediated Reversible Deactivation Radical Polymerization

Synthesis and Characterization of Random and Block-Random Diblock Silylated Terpolymers via RAFT Polymerization

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