Research progress of green surfactants in preparing acrylic polymer latex / Xiuming Wang in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 207, N° 4629 (03/2017)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 207, N° 4629 (03/2017) . - p. 20-22 Titre : Research progress of green surfactants in preparing acrylic polymer latex Type de document : texte imprimé Auteurs : Xiuming Wang, Auteur ; Ouyang Dai, Auteur ; Cuifeng Zhang, Auteur ; Tingting Xu, Auteur ; Lijun Chen, Auteur Année de publication : 2017 Article en page(s) : p. 20-22 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Alkyl polyglycosides Biosurfactants Latex Polyacryliques Index. décimale : 667.9 Revêtements et enduits Résumé : In recent years, more and more attention has been paid to green surfactants, which are safe, non toxic and environmentally friendly. In this paper the author present their research findings. Acrylic polymer latex has been widely used in many fields, such as coatings, adhesives, textile, papermaking and leather industries because of its particular properties and environmental friendliness. Nonyphenol ethoxylates (NPEOs) are widely used as surfactants for emulsion polymerisation to stabilise the latex. However, NPEOs are bioaccumulative and persistant in the environment, while nonylphenol, the breakdown product of NPEs, is an endocrine disruptor. Therefore, the EU Commission has recommended implementing risk reduction strategy, which foresees the ban of all applications leading to direct emissions to waste water and strict emission controls for all other technical processes using NPEOs as surfactants. In one of the major fields of application, alkyl phenol-free surfactants, with a more favourable ecological profile, are becoming key ingredients for eco-friendly emulsion polymers and polymer dispersions. In this paper, different kinds of green surfactants in acrylic polymer latex were reviewed. Note de contenu : - Alkyl glycosides - Polymerisable surfactants - Other environmental surfactants En ligne : https://drive.google.com/file/d/1t9NfV-zQBxa4D38fbPGlZFi1smLaWEbK/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=28105 [article]

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Research progress of radical initiator used in emulsion polymerisation / Cuifeng Zhang in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4621 (06/2016)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4621 (06/2016) . - p. 22-23 Titre : Research progress of radical initiator used in emulsion polymerisation Type de document : texte imprimé Auteurs : Cuifeng Zhang, Auteur ; Tingting Xu, Auteur ; Zhongbin Bao, Auteur ; Lijun Chen, Auteur Année de publication : 2016 Article en page(s) : p. 22-23 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Amorceurs (chimie) Colles:Adhésifs Polyaddition polymères vinyliques Polymérisation en émulsion Index. décimale : 668.3 Adhésifs et produits semblables Résumé : At present, polymer materials have been widely used in the chemical industry, architecture, medicine, food, agriculture and other industries. The synthesis of new macromolecule material and its theoretical research has been an important topic in polymer science'. Radical polymerisation is an effective method for mass production of a variety of vinyl polymers. About 70% or more of these polymers is produced by the radical polymerisation. Chain initiation is one of the important factors in the radical polymerisation, which will directly affect the quality of the product, the rate of polymerisation etc. The radical polymerisation initiation system can be summarised as peroxide initiator, azo initiator and redox initiator, difunctional and multifunctional initiators and macromolecular initiator. This paper focuses on the research progress of the radical initiators in recent years including several common water-soluble initiators, such as inorganic peroxide initiators, watersoluble azo initiators, redox initiators and composite initiators. Note de contenu : - Inorganic peroxide initiator - Water soluble azo initiator - Redox initiator - Composite initiator En ligne : https://drive.google.com/file/d/1qqjWbdTEQuEqPJnL3ub9naBJkq9Bpz5q/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26953 [article]

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Research progress of waterborne plastic coatings / Tingting Xu in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4620 (05/2016)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4620 (05/2016) . - p. 15-18 Titre : Research progress of waterborne plastic coatings Type de document : texte imprimé Auteurs : Tingting Xu, Auteur ; Cuifeng Zhang, Auteur ; Zhongbin Bao, Auteur ; Lijun Chen, Auteur Année de publication : 2016 Article en page(s) : p. 15-18 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Epoxydes Matières plastiques -- Revêtement:Matières plastiques -- Peinture Polyacrylates Polyuréthanes Revêtement monocomposant:Peinture monocomposant Revêtements bi-composant:Peinture bi-composant Revêtements en phase aqueuse:Peinture en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : How some properties of plastics, such as wear resistance and ageing resistance are weak so coatings are used to improve the applicability of the plastics. The advancement of waterborne coatings in plastics is reviewed. Plastic products have been more and more widely used and has become one of the indispensable important materials in many fields with the rapid development of the plastics industry. However, some properties of the plastics, such as wear resistance and ageing resistance are weak. Thus, coatings are used to improve the applicability of the plastics in all aspects, which are coated on the surface. At present, coatings, such as single-component thermoplastic acrylic coatings, two-component solvent polyvinyl chloride acrylate coatings, chlorinated polyolefin coatings and nitrocellulose coatings have been used to modify the plastic products. However, some above used coatings belong to the solvant plastic coatings, which contain some organic solvents, such as benzene, alcohols and hydrocarbon or oxygen solvent in the process of production. The organic solvants are harmful to the environment and human body due to their initial formaldehyde, aromatic and all kinds of harmful volatile substances. Furthermore, some plastic products cannot resist the organic solvents". Thus, more and more attention has been paid to the waterborne plastic coatings, which are friendly to the environment. Waterborne coatings are based on water soluble resins or different types of dispersion resins. Usually, they are composed of different kinds of waterbased resins, pigments, extenders and additives. In this paper, the advancement of waterborne coatings in plastics is reviewed. Note de contenu : - Waterborne acrylate coatings - Waterborne polyurethane coatings - Single component waterborne polyurethane coatings - Two-component waterborne coatings - Waterborne epoxy resin coatings En ligne : https://drive.google.com/file/d/1n_F-8qn9DGoYiMVH8dAUtgs7UerM1rIZ/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=26464 [article]

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Synthesis and characterisation of acrylate-dibutyl fumarat polymer emulsion / Tingting Xu in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4617 (02/2016)  

[article]  inPOLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4617 (02/2016) . - p. 24-27 Titre : Synthesis and characterisation of acrylate-dibutyl fumarat polymer emulsion Type de document : texte imprimé Auteurs : Tingting Xu, Auteur ; Zhongbin Bao, Auteur ; Cuifeng Zhang, Auteur ; Lijun Chen, Auteur Année de publication : 2016 Article en page(s) : p. 24-27 Note générale : Bibliogr. Langues : Anglais (eng) Catégories : Acrylates Les monomères acrylates sont un groupe d'esters faisant partie des vinyles, car renfermant une double liaison carbone-carbone et sont utilisés pour former des polyacryliques qui ont de multiples usages. Angle de contact Caractérisation Copolymères -- Synthèse Emulsifiants Fluoropolymères Fumarate de dibutyle Humidité -- Absorption:Eau -- Absorption Polymères en émulsion Silicones Les silicones, ou polysiloxanes, sont des composés inorganiques formés d'une chaine silicium-oxygène (...-Si-O-Si-O-Si-O-...) sur laquelle des groupes se fixent, sur les atomes de silicium. Certains groupes organiques peuvent être utilisés pour relier entre elles plusieurs de ces chaines (...-Si-O-...). Le type le plus courant est le poly(diméthylsiloxane) linéaire ou PDMS. Le second groupe en importance de matériaux en silicone est celui des résines de silicone, formées par des oligosiloxanes ramifiés ou en forme de cage (wiki). Index. décimale : 667.9 Revêtements et enduits Résumé : The fluorine-silicone modified acrylate-dibutyl fumarate emulsions were successfully prepared via semi-continuous seed emulsion polymerisation technology when MMA, DBF, VTES and HFMA were used to be the co-polymerised monomers and the mixture of SDBS and APG and KPS were used as the emulsifier and the initiator, respectively. The optimum recipe of preparing the emulsion is as follows : the amount of emulsifiers is 5% and the mass ratio of SDBS and APG is 1:4 ; the amount of initiator is 0.6% and the content of the fluorine monomer and silicon monomer is 6% and 8%, respectively. In comparison with the acrylate-dibutyl fumarate emulsion without fluorine monomer and silicon monomer, the thermal stability and the water resistance of the modified emulsion film are clearly improved. Note de contenu : - EXPERIMENTAL : Materials - Preparation of emulsion and its film - Characterisations - RESULTS AND DISCUSSION : FTIR and DSC analyses of the film - Influence of amount of emulsifier on properties of emulsion - Influence of amount of initiator on conversion percentage and coagulation percentage - Contact angle and water absorption of film - SCHEME : Synthesis pathway of modified acrylic latex - TABLES : 1. Basic recipe and conditions for preparing emulsion - 2. Influence of amount of emulsifier on properties of emulsion - 3. Influence of different mass ratio of emulsifier on properties of emulsion - 4. Effect of different mass ratios of monomers on properties of emulsion - FIGURES : 1. FTIR of fim - 2. DSC analysis of film - 3. Influence of initiator on conversion percentage and coagulation percentage - 4. Influence of amount of fluorine and silicon monomer on water absorption - 5. Contact angle of films - 6. TGA of film En ligne : https://drive.google.com/file/d/1_sqT9QrsIzmCtJRZ2fe73kBiuYJhhoaH/view?usp=drive [...] Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=25570 [article]

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