Advanced environmentally friendly coatings prepared from amine-capped aniline trimer-based waterborne electroactive polyurethane

Huang, Hsi‐Ya; Huang, Tzu-Ling; Lin, J.G.; Chang, Jung-Hsiang; Lee, Yu-Ting; Yeh, Jui‐Ming

doi:10.1016/j.matchemphys.2012.09.063

Cited by 42 publications

(11 citation statements)

References 38 publications

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“…The bond at 1535 cm −1 was due to N–H bending vibration and the bond at 1278 cm −1 showed a well‐defined C–H absorption of Si–CH 3 . Oligomeric aromatic amines with amino groups at both ends attracted research interests in polymer science and industries because of their applications as model compounds for electroactive polyanilines and as monomers to prepare polyurethane , poly( l ‐lactides) and epoxy polymers . Fig.…”

Section: Resultsmentioning

confidence: 99%

“…The corrosion current density ( j corr ) was determined by superimposing a straight line along the linear portion of the cathodic or anodic curve and extrapolating that line through E corr . The corrosion rate ( CR , in mm per year) was calculated using the following equation :

CR ({mm year}^{- 1}) = \frac{true[j_{corr} ({A cm}^{- 2}) \cdot M (g) true]}{D ({g cm}^{- 3}) \cdot V} \times 3270

…”

Section: Methodsmentioning

confidence: 99%

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Synthesis and anticorrosive properties of electroactive polyimide/SiO₂ composites

et al. 2013

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In this study, a series of electroactive polyimide/SiO2 (EPIS) composite materials containing conjugated segments of electroactive amino‐capped aniline trimer (AT) unit were successfully prepared. First of all, the amino‐modified silica (AMS) particles of ∼100 nm in diameter were synthesized by performing the conventional base‐catalyzed sol–gel reactions. Subsequently, the AMS nanoparticles were blending into the polymerization reactions between AT and 4,4′‐(4,4′‐isopropylidenediphenoxy)‐bis(phthalic anhydride), leading to the formation of EPIS composites. The as‐prepared EPIS materials in the form of coating on cold‐rolled steel (CRS) electrode were found to be much superior in corrosion protection over those of non‐electroactive polyimide and EPI materials based on a series of electrochemical corrosion measurements in saline. The significant enhancement in corrosion protection of EPIS coatings on CRS electrodes might probably be attributed to the redox catalytic property of organic EPI inducing the formation of passive metal oxide layer and the barrier property of well‐dispersed AMS nanoparticles existed in EPI matrix. POLYM. COMPOS., 35:617–625, 2014. © 2013 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

CR ({mm year}^{- 1}) = \frac{true[j_{corr} ({A cm}^{- 2}) \cdot M (g) true]}{D ({g cm}^{- 3}) \cdot V} \times 3270

…”

Section: Methodsmentioning

confidence: 99%

Synthesis and anticorrosive properties of electroactive polyimide/SiO₂ composites

et al. 2013

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“…Let {θ i } d i= denote a standard ordering of the eigenvalues of A. Then A, A * is self-dua is a standard ordering of the eigenvalues of A * (see [7,Proposition 8.7]). of reducing corrosion.…”

Section: Introductionmentioning

confidence: 99%

“…The WPU coating based on the obtained polyacrylate with low VOCs level showed good wet adhesion and chemical resistance. Huang et al (7) prepared and characterized electroactive waterborne polyurethane (EWPU) containing conjugated segments of electroactive amino-capped aniline trimer unit. And the protection efficiency (P EF %) of EWPU (93.96%) was higher than that of non-electroactive waterborne polyurethane (NEWPU) coating (18.20%) based on electrochemical measurements in 3.5 wt% NaCl electrolyte, which indicated enhanced corrosion protection effects of EWPU on cold-rolled steel (CRS).…”

Section: Introductionmentioning

confidence: 99%

Effect of resins on the salt spray resistance and wet adhesion of two component waterborne polyurethane coating

Zhu³

et al. 2019

E-Polymers

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Effects of the type, chemical structure and NCO/OH of resins on wet adhesion and salt spray resistance of two component waterborne polyurethane coating were studied in this paper. The content of functional groups in resins and films were analysed by areas of their FT-IR absorption peak to study the relationship with anticorrosive performance of coatings. Coatings based on resins with more -OH tend to have stronger wet adhesion and salt spray resistance because resins with more -OH have more possibilities to react with -NCO to form a compact film with a higher crosslinking degree. The wet adhesion of coatings after 8 h of immersion deteriorated from level 1 to level 5 with the increase of NCO/OH due to the decrease of -OH in coatings to link with substrates. And excess -NCO tend to react with H 2 O to generate CO 2 to form cracked physical bubbles, which would weaken the wet adhesion.Abstract: Let F denote a eld and let V denote a vector space over F with nite positive a pair A, A * of diagonalizable F-linear maps on V, each of which acts on an eigenbasis f irreducible tridiagonal fashion. Such a pair is called a Leonard pair. We consider the se there exists an automorphism of the endomorphism algebra of V that swaps A and A * . Su is unique, and called the duality A ↔ A * . In the present paper we give a comprehens duality. In particular, we display an invertible F-linear map T on V such that the map X → A ↔ A * . We express T as a polynomial in A and A * . We describe how T acts on ags and 24 bases for V.

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“…Yeh and coworkers synthesized a series of electroactive polymers such as epoxy [12], polyimide [13,14], polyurea [15], and polyamide [16] as anticorrosion coating materials. The mechanism for the enhanced corrosion protection ability of the electroactive polymer coatings could be attributed to the formation of passive metal oxide layers on the metal electrode surface, which was induced by the redox catalytic capabilities of the aniline oligomer [17,18]. …”

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confidence: 99%

Novel ascorbic acid sensor prepared from gold/aniline-pentamer-based electroactive polyamide composites

Tsai¹,

Lu²,

Lai³

et al. 2018

Express Polym. Lett.

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Recently, electroactive polymers incorporated with aniline oligomers have attracted research attention because of their superior properties such as good solubility, biodegradable properties and the ability to form films [1][2][3][4][5]. These synthetic strategies include post polymerization grafting of oligoanilines onto the polymer chain, polycondensation of reactive monomers containing oligoanilines to form polymers, and oxidative coupling polymerization to form oligoaniline segments during polymerization [6]. Chao and Wang synthesized a series of electroactive polymers which bear oligoaniline, phenylamine, and fluorene groups in their side chain [7][8][9]. The generated fluorescence showed a clear multiple stimuli-responsive behavior against redox species, pH, electricity, and pressure, contributed by the sensitive oligoaniline and phenylamine groups. Zagorska and co-workers prepared electroactive polymers combining the electrochromic properties of polythiophenes and oligoanilines [10,11]. Both the polythiophene main chains and the oligoaniline side chains could be doped in various ways. Yeh and coworkers synthesized a series of electroactive polymers such as epoxy [12], polyimide [13,14], polyurea [15], and polyamide [16] as anticorrosion coating materials. The mechanism for the enhanced corrosion protection ability of the electroactive polymer coatings could be attributed to the formation of passive metal oxide layers on the metal electrode surface, which was induced by the redox catalytic capabilities of the aniline oligomer [17,18]. Received 16 June 2017; accepted in revised form 6 September 2017Abstract. A novel gold/aniline-pentamer-based electroactive polyamide (Au/EPA) composites that can modify carbon paste electrodes (CPEs) for ascorbic acid (AA) sensing has been studied in detail in this article. Cyclic voltammetry studies indicated improved electrochemical properties of the Au/EPA composites, demonstrating the occurrence of efficient electron/ charge transfer between the Au and the EPA. Experimental tests shows that there is a linear relationship between the concentration of added AA and the response current for the CPE modified with Au/EPA sensor to the concentration of AA in the range of 0.05-0.75 mM (R 2 = 0.996, n = 15). The detection limit and the sensitivity of the Au/EPA-CPE AA sensors were 2.75 μM at a signal to noise ratio (S/N) of 3, and 21.7 mA·mM -1 , respectively.

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Advanced environmentally friendly coatings prepared from amine-capped aniline trimer-based waterborne electroactive polyurethane

Cited by 42 publications

References 38 publications

Synthesis and anticorrosive properties of electroactive polyimide/SiO₂ composites

Synthesis and anticorrosive properties of electroactive polyimide/SiO₂ composites

Effect of resins on the salt spray resistance and wet adhesion of two component waterborne polyurethane coating

Novel ascorbic acid sensor prepared from gold/aniline-pentamer-based electroactive polyamide composites

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Advanced environmentally friendly coatings prepared from amine-capped aniline trimer-based waterborne electroactive polyurethane

Cited by 42 publications

References 38 publications

Synthesis and anticorrosive properties of electroactive polyimide/SiO2 composites

Synthesis and anticorrosive properties of electroactive polyimide/SiO2 composites

Effect of resins on the salt spray resistance and wet adhesion of two component waterborne polyurethane coating

Novel ascorbic acid sensor prepared from gold/aniline-pentamer-based electroactive polyamide composites

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Product

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Synthesis and anticorrosive properties of electroactive polyimide/SiO₂ composites

Synthesis and anticorrosive properties of electroactive polyimide/SiO₂ composites