Formulation des composés siliconés et fluorés最新文献_第2页

Formulation des composés siliconés et fluorés Pub Date : 2020-11-04 DOI: 10.1051/978-2-7598-0240-1.C005

B. Boutevin, F. Guida-Pietrasanta, A. Rousseau

引用次数: 0

Factors influencing the treatment of paper with fluorochemical surfactants for grease-proof applications 氟化学表面活性剂对纸张防油处理的影响因素

Formulation des composés siliconés et fluorés Pub Date : 2020-11-04 DOI: 10.1051/978-2-7598-0240-1-009

R. Pelton

{"title":"Factors influencing the treatment of paper with fluorochemical surfactants for grease-proof applications","authors":"R. Pelton","doi":"10.1051/978-2-7598-0240-1-009","DOIUrl":"https://doi.org/10.1051/978-2-7598-0240-1-009","url":null,"abstract":"Paper and paperboard products are routinely treated with fluorochemicals to limit the rate of penetration by oils, solvents and other hydrophobic materials. Common applications include pet food bags and fast food packaging. In most cases, only paper products based on chemical pulp fibres are treated. Fluorochemicals are not considered to be cost effective In papers based on mechanical pulps. A number of generalizations can be made about fluorochemical applications to chemical pulps and fine papers. Fluorochemical addition levels for a given level of solvent resistance increase with increased pulp refining, with increased filler content and with increased sizing. Refining and filler addition increases the specific surface area of the headbox furnish and thus the fluorochemical demand. Wet end size dispersions also increase the surface area of the furnish. In addition, sizing influences size press pickup for size press fluorochemical treatment. The objectives of this work were to understand why fluorochemicals, added to retard solvent or grease penetration, are more effective in wood-free papers than in mechanical pulp-based papers. Newsprint required about 10 times more fluorochemical than did Whatman # 42 filter paper to achieve solvent resistance. Based on results of kit tests, contact angle measurements and X-ray photoelectron spectroscopy using both paper and regenerated cellulose films, it was concluded that about 40% of the added fluorochemicat demand of newsprint, compared with filter paper, was due to the higher specific surface area of newsprint. The remaining 60% was due to interference by solvent extractable material (i.e. pitch). The negative effects of pitch could be partially circumvented by using hydrophobically modified starch in conjunction with the fluorochemical.","PeriodicalId":126855,"journal":{"name":"Formulation des composés siliconés et fluorés","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133517911","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

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Index des sujets 主题索引

Formulation des composés siliconés et fluorés Pub Date : 2020-11-04 DOI: 10.5840/wcp1719885331

S. Masmoudi, Abdelmajid Naceur

引用次数: 0

Activités dans la chimie du fluor au Laboratoire de Chimie Macromoléculaire-UMR-CNRS-5076 大分子化学实验室(umr - cnrs -5076)氟化学的活动

Formulation des composés siliconés et fluorés Pub Date : 2020-11-04 DOI: 10.1051/978-2-7598-0240-1.C020

B. Boutevin, B. Ameduri, F. Guida-Pietrasanta, A. Rousseau

引用次数: 0

Les silicones dans les produits de coiffage : silicones phénylées et formulation de produits de brillance 美发产品中的硅酮:苯基硅酮和光泽产品的配方

Formulation des composés siliconés et fluorés Pub Date : 2020-11-04 DOI: 10.1051/978-2-7598-0240-1.C016

F. Pataut, Claude Dubief

引用次数: 1

Emulsions silicones filmogenes 乳剂，有机硅薄膜

Formulation des composés siliconés et fluorés Pub Date : 2020-11-04 DOI: 10.1051/978-2-7598-0240-1.c007

Michel Feder

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Contrôle de la rhéologie de PDMS linéaires chargés à la silice 二氧化硅线性PDMS的流变学控制

Formulation des composés siliconés et fluorés Pub Date : 2020-11-04 DOI: 10.1051/978-2-7598-0240-1-017

J. Paquien, J. Galy, J. Gérard, A. Pouchelon, J. Pujol

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Préface 前言

Formulation des composés siliconés et fluorés Pub Date : 2020-11-04 DOI: 10.1051/978-2-7598-0240-1.c001

引用次数: 0

Stabilisation of protein-containing water-in-oil emulsions 含蛋白质油包水乳剂的稳定

Formulation des composés siliconés et fluorés Pub Date : 2020-11-04 DOI: 10.1051/978-2-7598-0240-1-015

Muxin Liu, E. Pacard, A. Ragheb, Paul M. Zelisko, M. Brook

{"title":"Stabilisation of protein-containing water-in-oil emulsions","authors":"Muxin Liu, E. Pacard, A. Ragheb, Paul M. Zelisko, M. Brook","doi":"10.1051/978-2-7598-0240-1-015","DOIUrl":"https://doi.org/10.1051/978-2-7598-0240-1-015","url":null,"abstract":"Silicones are highly hydrophobic entities, which can make the formulation of stable water emulsions challenging. Silicone oil and elastomer interfaces are also known to act as protein denaturants. Thus, formulation of sllicone/protein emulsions in which proteins are present as passive or active ingredients might be considered to be of questionable value. However, there are many reasons to consider the formation of such emulsions, including the ability to deliver proteins for industrial or medical applications. Silicone emulsions are already widely used in personal care applications, for example in hair and skin care, where protein/silicone contact will eventually arise. Reports exist of the spontaneous emulsification of silicone oils in contact with proteins, for example in the eye, following retinal repair. Little work, however, has been done on formulating silicone emulsions that contain proteins. Generally, anionic or non-ionic surfactants are used to stabilize oil-in-water and water-in-oil emulsions, respectively. Water-in-silicone oil emulsions containing proteins can readily be prepared using silicone surfactants that bear only a small number of hydrophilic groups. Two classes of silicone surfactants are presented: those such as commercial silicone-polyethylene oxide copolymers that cannot form a covalent bond between protein and silicone, and compounds like (EtO)3Si(CH 2 ) 3 O(Me2SiO)n(CH 2 ) 3 -Si(OEt) 3 , which can. The protein may be a passive participant in the emulsion, or may act as a vital constituent of the oil/water interface. The proteins in these emulsions lie at the oil/water interface regardless of whether they act as cosurfactants. At the interface, and unlike the situation with unstabilized silicone oil emulsions, the proteins have generally been shown using enzyme assays to be as natured as the controls that have not been exposed to silicones. Guidelines for formulating protein-containing water-in-silicone oil emulsions are discussed.","PeriodicalId":126855,"journal":{"name":"Formulation des composés siliconés et fluorés","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2020-11-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121337952","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Rôle des composés hautement fluorés dans la formulation de substituts du sang et dans celle d'agents de contraste pour le diagnostic par échographie 高氟化合物在超声诊断血液替代品和造影剂配方中的作用

Formulation des composés siliconés et fluorés Pub Date : 2020-11-04 DOI: 10.1051/978-2-7598-0240-1.c014

Jean G. Rless

引用次数: 0