Combined 'spear and shield' : superhydrophilic antimicrobial and antifouling mesh membrane for efficient oil–water separation through facile and environmentally friendly strategy / Ming Lu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 1 (01/2017)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 1 (01/2017) . - p. 243–253 Titre : Combined 'spear and shield' : superhydrophilic antimicrobial and antifouling mesh membrane for efficient oil–water separation through facile and environmentally friendly strategy Type de document : texte imprimé Auteurs : Ming Lu, Auteur ; Jiasi Zhao, Auteur ; Weiping Tu, Auteur ; Jianqing Hu, Auteur ; Feng Wang, Auteur Année de publication : 2017 Article en page(s) : p. 243–253 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antimicrobiens Eau Huiles et graisses Hydrophilie PDSH Polymérisation en émulsion Revêtements antisalissures:Peinture antisalissures Séparation (technologie) Index. décimale : 667.9 Revêtements et enduits Résumé : Superhydrophilic stainless steel mesh membranes (SSMMs) with excellent antifouling, antimicrobial, and filtration performance, based on three-layer architecture, have been successfully prepared by a facile and environmentally friendly strategy. The superhydrophilic terpolymer poly(DMHB-SPP-HEA), denoted as PDSH, was synthesized through aqueous solution polymerization. PDSH-coated SSMMs (PDSH-SSMMs) were achieved by successive dip-coating of the commercial SSMMs into polyvinyl alcohol, divinyl sulfone (DVS), and PDSH solutions. The DVS layer and PDSH solution were crosslinked through DVS chemistry to enhance the hydrophilicity and provide a number of unique properties, such as antimicrobial activity, antifouling ability, and oil–water separation capability. Two different PDSH-SSMMs, PDSH0-SSMM and PDSH5-SSMM, were prepared and characterized using FTIR, SEM, and contact angle measurement (CAM). The antimicrobial activity, bovine serum albumin (BSA) fouling, and oil–water separation performance were evaluated simultaneously. The results indicate that PDSH0-SSMM is an excellent oil–water separation membrane for long-term separation, together with its extra antimicrobial and antifouling properties. It is promising for the industrialization of multi-functional membranes through this facile and environmentally friendly strategy. Note de contenu : - EXPERIMENTAL : Terpolymer synthesis - PDSH-SSMMs preparation - Terpolymer characterization - Surface characterization - Biological characterization - Filtration tests - RESULTS AND DISCUSSION : Terpolymer characterization - Surface characterization - Biological tests - Filtration tests - Necessity of the zwitterion DOI : 10.1007/s11998-016-9834-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-016-9834-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27806 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
18674	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Development of direct contact-killing non-leaching antimicrobial polyurethanes through click chemistry / Kaimei Peng in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 15, N° 6 (11/2018)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 15, N° 6 (11/2018) . - p. 1239-1250 Titre : Development of direct contact-killing non-leaching antimicrobial polyurethanes through click chemistry Type de document : texte imprimé Auteurs : Kaimei Peng, Auteur ; Xuexin Dai, Auteur ; Haili Mao, Auteur ; Hongtao Zou, Auteur ; Zaibo Yang, Auteur ; Weiping Tu, Auteur ; Jianqing Hu, Auteur Année de publication : 2018 Article en page(s) : p. 1239-1250 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Antimicrobiens Benzisothiazolinone La benzisothiazolinone est un biocide très répandu faisant partie du groupe d´isothiazolinone. Utilisé comme agent conservateur dans la peinture, le vernis et l´adhésif, il a un effet fongicide. Caractérisation Chimie click Composés organiques -- Synthèse Polyuréthanes Résistance à l'humidité:Résistance à l'eau Revêtements -- Propriétés thermiques Index. décimale : 667.9 Revêtements et enduits Résumé : A robust, efficient, and orthogonal click chemistry (copper (I)-catalyzed alkyne-azide cycloaddition) was used to prepare an antimicrobial polymer and precisely control the conjugation ratio of antibiotic molecules to polymer. Antimicrobial polyurethanes with pendant benzisothiazolinone (PU-BIT) were synthesized using click chemistry to connect azide functional polyurethane (PU-N3) and alkyne functional benzisothiazolinone (BIT-Al). The direct contact-killing and non-leaching antimicrobial properties of PU-BIT were verified by both antimicrobial drop and disk diffusion. This approach provides a new methodology and platform for the development of contact-killing and non-leaching antimicrobial materials for a variety of practical applications. This research is the first to demonstrate that the broad-spectrum BIT antibiotic is a selective antibiotic for Gram-positive bacteria when covalently linked to a polymer. PU-BIT film containing 0.8 wt% BIT exhibited a selective antimicrobial performance with bactericidal efficacy of 91.6% and 30% against Gram-positive Staphylococcus aureus and Gram-negative Escherichia coli, respectively. The mechanism of the selective antimicrobial activity of PU-BIT is also discussed. Note de contenu : - MATERIALS AND METHODS : Materials - Synthesis - Characterization - RESULTS AND DISCUSSION : Monomers and polymers synthesis - Thermal properties - Water-resistance property - Antimicrobial activity DOI : 10.1007/s11998-018-0068-1 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-018-0068-1.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=31334 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
20388	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Electrophoretic deposition of waterborne ultraviolet (UV)-curable coatings based on microgels / Junhua Chen in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 16, N° 5 (09/2019)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 16, N° 5 (09/2019) . - p. 1367-1378 Titre : Electrophoretic deposition of waterborne ultraviolet (UV)-curable coatings based on microgels Type de document : texte imprimé Auteurs : Junhua Chen, Auteur ; Teng Yuan, Auteur ; Weiping Tu, Auteur ; Kaimei Peng, Auteur ; Jianqing Hu, Auteur ; Feng Wang, Auteur Année de publication : 2019 Article en page(s) : p. 1367-1378 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Dépôt électrophorétique Microgels Un microgel est un gel formé à partir d'un réseau de filaments microscopiques de polymères Polyéther imide Polymères ramifiés Résistance à la traction Revêtements -- Séchage sous rayonnement ultraviolet Revêtements organiques Index. décimale : 667.9 Revêtements et enduits Résumé : Microgels are novel functional polymers with an intramolecular crosslinked structure that can significantly improve the mechanical properties of coatings. We demonstrate herein for the first time successful fabrication of microgels based on branched poly(ethylenimine) (PEI) and their incorporation into water-soluble polyacrylate (WPA), with subsequent preparation of compact coatings via electrophoretic deposition (EPD) and ultraviolet (UV) radiation. The films including the microgels exhibited tensile strength and elongation at breakage values above 6.82 MPa and 72.09%, respectively. The coatings showed good thermal stability, decreased water absorption, outstanding durability, and rust resistance after immersion in 5 wt% NaCl solution for 7 days at 40°C. This work provides a new strategy that can be readily applied to a variety of conductive substrates. Note de contenu : - MATERIALS AND METHODS : Materials - Synthesis of acrylate prepolymer - Synthesis of microgels with hyperbranched structure - Preparation of UV-curable EPD coatings - Characterization - RESULTS AND DISCUSSION : FTIR and 1H NMR analyses of PIK monomer - Particle size control of WPA-PIK emulsions - Thermal stability of waterborne UV-curable EPD coatings - Mechanical properties and water resistance - Other physical properties of UV-curable EPD coatings DOI : 10.1007/s11998-019-00219-0 En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-019-00219-0.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=33017 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
21154	-	Périodique	Bibliothèque principale	Documentaires	Disponible

Transparent polyester polyol-based polyurethane coatings : the effect of alcohols / Junrui Zhang in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 10, N° 6 (11/2013)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 10, N° 6 (11/2013) . - p. 887-895 Titre : Transparent polyester polyol-based polyurethane coatings : the effect of alcohols Type de document : texte imprimé Auteurs : Junrui Zhang, Auteur ; Weiping Tu, Auteur ; Zilin Dai, Auteur Année de publication : 2013 Article en page(s) : p. 887-895 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Analyse mécanique dynamique Polyesters Polyols Polyuréthanes Résistance à l'humidité Résistance chimique Revêtements -- Propriétés mécaniques:Peinture -- Propriétés mécaniques Revêtements -- Propriétés optiques:Peinture -- Propriétés optiques Revêtements:Peinture Stabilité thermique Transparence (optique) Index. décimale : 667.9 Revêtements et enduits Résumé : A series of polyester polyols were synthesized using 1,6-hexanediol (HDO), 1,4-cyclohexanedimethanol (1,4-CHDM) and trimethylol propane (TMP), alone or in combination with 1,4-cyclohexanedicarboxylic acid and adipic acid. The polyester polyols were reacted with isocyanate trimers to form polyurethane (PU) coatings. Physical properties of the polyesters such as hydroxyl value, acid value, molecular weight, viscosity, and glass transition temperature (T g) had been determined, and the IR spectroscopic analyses of polyesters/PU were reported. The properties (impact resistance, film flexibility, hardness, optical transmittance, chemical resistance, water absorption, thermostability, and phase separation) of the PU coatings so prepared were characterized. The viscosities of polyester polyols were dependent on the structure of the alcohols. Polyester polyol containing only linear aliphatic diol (HDO) was a transparent liquid at room temperature. The viscosity was increased by raising the molar ratio of 1,4-CHDM and/or TMP. All PU coatings had excellent flexibility, impact resistance, and hardness. The coatings derived from diol CHDM had the highest hardness, and the PU derived from diol HDO had the lowest hardness. The chemical resistance and water absorption improved with greater molar ratios of 1,4-CHDM or TMP. Results of differential scanning calorimetry and wide-angle X-ray diffraction indicated that there was no obvious crystallinity in the PU networks. Dynamic mechanical analysis (DMA) results revealed that both CHDM and TMP can increase the T g of PU, and the crosslinking density improved with increased molar ratio of TMP. Atomic force microscope (AFM) and DMA analysis revealed that the PU coatings had no obvious microphase separation, which enabled them to have excellent properties, and the different composition in polyols did not have significant influence on transmittance in the visible region. Results of thermogravimetric measurements indicated that all the PU coatings had good thermal stability. Note de contenu : - EXPERIMENTAL SECTION : Materials - Synthesis of polyester polyols - Preparation of PU coatings - Testing methods - RESULTS AND DISCUSSION : Preparation and polymeric properties of polyester polyols - Characterization of polyester polyols and PU coatings - Mechanical properties of PU based on different polyester polyols - Transmittance - DMA analysis - Thermal stability - Chemical and water resistance of PU coatings - Surface morphology of transparent PU coatings DOI : htt10.1007/s11998-013-9527-x En ligne : https://link.springer.com/content/pdf/10.1007%2Fs11998-013-9527-x.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=19828 [article]

Réservation

Réserver ce document

Exemplaires (1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
15744	-	Périodique	Bibliothèque principale	Documentaires	Disponible

---

1 (1 - 4 / 4)