| Titre : |
Synthesis and characterisation of silicone polyacrylate latex emulsified by green surfactants |
| Type de document : |
texte imprimé |
| Auteurs : |
Yilu Gong, Auteur ; Tantan Shao, Auteur ; Xin Zhang, Auteur ; Dawei Chen, Auteur ; Lijun Chen, Auteur |
| Année de publication : |
2019 |
| Article en page(s) : |
p. 33-36 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Angle de contact
Biosurfactants
Caractérisation
Copolymère silicone acrylate
Copolymères -- Synthèse
Emulsifiants
Humidité -- Absorption:Eau -- Absorption
Latex
Monomères
Revêtements en phase aqueuse
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
The modified latex was successfully prepared by semi-continuous seeded emulsion polymerisation with a green mixed emulsifier of polyether nonions with double bonds (AE-100) and alkyl alcohol polyether sodium sulphate anionic emulsifier (ES-430S). The mixed monomers of MMA, BA and vinyl triethoxysilane (VETS) were initiated with potassium persulphate (KPS). The structure and properties of the resultant latex were characterised by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA) differential scanning calorimetry (DSC) and contact angle (CA). The conditions for preparing the latex were instigated in detail. Results indicate that the optimal conditions of preparing the latex are as follows: the amount of mixed emulsifiers is 6.0% ; the optimum mass ratio of AE-100 to ES-4305 is 1:1.5 ; the amount of initiator is 0.7% ; the mass rate of main monomers of MMA: BA =1:1 and amount of VIES is 6.0%. In addition, the resultant latex shows good thermal stability and hydrophobicity. |
| Note de contenu : |
- EXPERIMENT : Materials - Preparation of modified latex - Characterisation
- RESULTS AND DISCUSSION : FTIR and DSC of films - Influence of mass ratio of monomer on properties of latex - Effect of amount of emlusifier and mass ratio on properties of latex - Water absorption and contact angle
- Fig. 1 : Synthetic pathway of preparing modified latex
- Fig. 2 : FTIR of latex film
- Fig. 3 : DSC of film
- Fig. 4 : Effect of different mass ratios of emulsifier on conversion percentage (A) and coagulation percentage (B)
- Fig. 5 : Influence of amount of VTES on contact angle (B) and water absorption (C)
- Fig. 6 : Contact angles of film la 77.6°, conventional latex film ; b 89.6°, modified latex film)
- Fig. 7 : TGA of latex film (a : conventional latex film ; b : modified latex film)
- Table 1 : Recipe of preparing modified latex
- Table 2 : The effect of the amount of emulsifiers on average particle size
- Table 3 : Influence of mass radio of monomer on properties of lates
- Table 4 : Influence of amount of emulsifier on properties of latex |
| En ligne : |
https://drive.google.com/file/d/1YrbMdfoE1Li2zajO9lRzKpc2h_ehnrTQ/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32122 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 209, N° 4649 (03/2019) . - p. 33-36
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Synthesis and characterisation of silicone polyacrylate latex emulsified by green surfactants in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 209, N° 4649 (03/2019)
