Organic–inorganic hybrid coatings prepared from glycidyl carbamate resins and amino-functional silanes

Chattopadhyay, D. K.; Muehlberg, Aaron J.

doi:10.1016/j.porgcoat.2008.06.009

Cited by 32 publications

(15 citation statements)

References 26 publications

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“…Chemical interfering mechanism by the fungicide in the silane treated‐wood/PVC composite was proposed in this work as Scheme . In Scheme a, the chemical bondings between wood and PVC matrix from the amino silane coupling agent through the primary (covalent) bonds at the hydroxyl groups of wood particles through silylation process of the trialkylsilyl functional groups , and through the dipole–dipole interaction between the amine functional groups and the polar sites of PVC molecules. When the fungicide substance was added (as shown in Schemes b and c) the carbamate groups (R‐NH‐COO‐R) would interfere at the dipole–dipole interactions of the silane coupling agent and the PVC, which were possibly replaced by amine groups from the carbamate, and consequently diminished the interaction between the wood and the PVC matrix and thus the mechanical properties decreased.…”

Section: Resultsmentioning

confidence: 99%

“…Chemical interfering mechanism by the fungicide in the silane treated-wood/PVC composite was proposed in this work as Scheme 1. In Scheme 1a, the chemical bondings between wood and PVC matrix from the amino silane coupling agent through the primary (covalent) bonds at the hydroxyl groups of wood particles through silylation process of the trialkylsilyl functional groups [27,28], and through the dipole-dipole interaction between the amine functional groups and the polar sites of PVC molecules.…”

Section: Materials Characterizationsmentioning

confidence: 99%

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Antifungal properties and material characteristics of PVC and wood/PVC composites doped with carbamate-based fungicides

Kositchaiyong

Rosarpitak²,

Sombatsompop

2013

Polym Eng Sci

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Antifungal properties of polyvinylchloride (PVC) and wood/PVC composites (WPVC) were studied with two different fungicides through disk diffusion and dry weight techniques against Aspergillus niger as a testing fungus. Three different types of woods, including Xylia kerrii Craib & Hutch.(XK), Hevea brasiliensis Muell.(HB), and Mangifera indica Linn.(MI), were used. The disk diffusion results revealed that the addition of 3‐iodopropinyl‐N‐butylcarbamate (IPBC) in the PVC and WPVC markedly reduced the diameter of fungi, whereas the addition of methylbenzimidazole‐2‐ylcarbamate(Carbendazim) did not. The results from IPBC samples by the dry weight technique corresponded to those by the disk diffusion method. Adding fungicides tended to slightly increase the flexural properties of PVC, whereas in the case of WPVC those properties were deteriorated by IPBC and carbendazim additions. The total color change was less when IPBC only was introduced into PVC. FTIR spectra suggested that no chemical structure changes were observed after the addition of IPBC and carbendazim. The higher surface contact angle and fungicide release values for IPBC samples could imply greater diffusibility of IPBC in PVC and WPVC matrices, accompanied by increased antifungal activity. WPVC with HB wood showed the best antifungal performance, at an optimal concentration of 10,000 ppm, when compared with XK and MI woods. POLYM. ENG. SCI., 54:1248–1259, 2014. © 2013 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

Section: Materials Characterizationsmentioning

confidence: 99%

Antifungal properties and material characteristics of PVC and wood/PVC composites doped with carbamate-based fungicides

Kositchaiyong

Rosarpitak²,

Sombatsompop

2013

Polym Eng Sci

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“…Organic/inorganic hybrid materials prepared by the sol-gel approach have rapidly become a fascinating new field of research in materials science [15]. Careful selection of a hybrid coating allows combining the desirable properties of organic part of system, i.e., toughness and elasticity with those of inorganic phase that is characteristic of good hardness, chemical resistance and adhesion to the metal substrate via formation of covalent bonds [16]. They offer an excellent adhesion to metal as well as to the subsequent coat via strong covalent bond and a three dimensional network of -Si-O-Si-linkages which helps to retard the penetration of corrosive medium through the coating [17].…”

Section: Introductionmentioning

confidence: 99%

Synthesis of Polyurethane/Silica Modified Epoxy Polymer Based on 1,3-Propanediol for Coating Application

et al. 2017

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Synthesis of polyurethane/silica modified epoxy polymer using 1, 3-propanediol ABSTRAK Polimer epoksi termodifikasi poliuretan/silica telah disintesis dengan menggunakan bahan dasar 1,3-propanadiol. Sintesis dilakukan dengan mereaksikan senyawa tolonat dan 1,3-propanadiol (rasio berat NCO/OH = 2,5/1) sebagai bahan penyusun poliuretan dengan epoksi diglisidil eter bisfenol A (DGEBA) disertai penambahan katalis dibutiltin dilaurat (DBTL), dimana penambahan poliuretan sebesar 20% (b/b) terhadap berat epoksi. Berdasarkan spektra dari Fourier Transform Infrared (FTIR) dan 1 H-Nuclear Magnetic Resonance ( 1 HNMR) ditunjukkan adanya ikatan baru yang terbentuk dari hasil reaksi gugus isosianat dan gugus hidroksi, yang mana gugus hidroksi ini berasal dari epoksi dan 1,3-propanadiol. Penambahan silika (5, 10, dan 15% b/b terhadap berat epoksi) ke dalam epoksi termodifikasi poliuretan dilakukan melalui reaksi sol gel tetraetil ortosilikat (TEOS

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“…1,4-6 GC resins have also been used to produce hybrid sol-gel coatings with an excellent combination of properties. [7][8][9] GC resins studied thus far can show a very high viscosity due to intermolecular hydrogen bonding; however, a previous study showed that GC resins can be modified with alcohols to reduce their viscosity up to 90%, and the resulting impact on properties of the coatings was studied. 10 Environmental concerns have led to stringent regulations and a demand for reduction in volatile organic compound (VOC) emission.…”

Section: Introductionmentioning

confidence: 99%

Novel water-dispersible glycidyl carbamate (GC) resins and waterborne amine-cured coatings

2011

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Water-dispersible glycidyl carbamate (GC) functional resins were synthesized and crosslinked using a water-dispersible amine to form coatings. GC functional resins are synthesized by the reaction of an isocyanate functional compound with glycidol to yield a carbamate (urethane) linkage (-NHCO-) and reactive epoxy group. The combination of both functionalities in a single resin structure imparts excellent mechanical and chemical properties to the coatings. Previous studies on the development of GC coatings have focused on solvent-borne coating systems. In this study, GC resins were modified by incorporating nonionic hydrophilic groups to produce water-dispersible resins. To determine the influence of the content of hydrophilic groups on dispersion stability, aqueous dispersions were made from a series of hydrophilically modified GC resins and characterized for particle size and dispersion stability. The composition of a typical, dispersed GC resin particle was predicted using Monte Carlo simulations. Stable GC dispersions were used to prepare amine-cured coatings. The coatings were characterized for solvent resistance, water resistance, hardness, flexibility, adhesion, and surface morphology. It was observed that GC resins were able to be dispersed in water without using any surfactant and by minimal mixing force (hand mixing) and produced coating films with good properties when crosslinked with a compatible waterborne amine crosslinker.

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Organic–inorganic hybrid coatings prepared from glycidyl carbamate resins and amino-functional silanes

Cited by 32 publications

References 26 publications

Antifungal properties and material characteristics of PVC and wood/PVC composites doped with carbamate-based fungicides

Antifungal properties and material characteristics of PVC and wood/PVC composites doped with carbamate-based fungicides

Synthesis of Polyurethane/Silica Modified Epoxy Polymer Based on 1,3-Propanediol for Coating Application

Novel water-dispersible glycidyl carbamate (GC) resins and waterborne amine-cured coatings

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