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Synthesis and properties of acrylate latex modified by vinyl alkoxy siloxane 被引量:9
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作者 张心亚 孙志娟 +3 位作者 黄洪 黎永津 蓝仁华 陈焕钦 《Journal of Central South University of Technology》 EI 2007年第5期666-672,共7页
Acrylate latex modified by vinyl triisopropoxy silane (C-1706) was synthesized by seeded emulsion polymerization with anionic emulsifier sodium dodecyl sulphonate(SDS) and nonionic emulsifier OP-10 as the multiple emu... Acrylate latex modified by vinyl triisopropoxy silane (C-1706) was synthesized by seeded emulsion polymerization with anionic emulsifier sodium dodecyl sulphonate(SDS) and nonionic emulsifier OP-10 as the multiple emulsifiers at (78±2) ℃. The effects of different factors, such as the emulsifier, C-1706 monomer and its feeding manner on the properties of acrylate latex modified by C-1706 were investigated. The particle size distribution and the structure, the configuration, the weather durability and stain resistance of copolymer latex were characterized by particle size analyzer, Fourier transform infrared spectroscopy (FT-IR), transmission electron microscope(TEM), scanning electron microscope(SEM) and ultraviolet aging instrument respectively. The results show that SDS to OP-10 as multiple emulsifiers can lead to coordinated efficiency, the optimal emulsifier dosage is 2.4%?3.2%(mass fraction), and the mass ratio of SDS to OP-10 is 1?1? 1?2. The seeded emulsion polymerization can effectively introduce a organic-siloxane bonding in a macromolecule inter polymer, and the obtained acrylate latex modified by organic-siloxane possesses narrow distribution of particle size with mean diameter of 51.8?76.6 nm and has the excellent properties in weather durability and stain-resistance especially. 展开更多
关键词 vinyl alkoxy siloxane acrylate latex emulsion polymerization SYNTHESIS characterization
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Comparative study between novel self cross-linking and conventional fluorinated acrylic latex 被引量:1
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作者 Li Jun Chen 《Chinese Chemical Letters》 SCIE CAS CSCD 2011年第10期1249-1252,共4页
Novel self cross-linking fluorinated acrylic latex(SCLFAL) has been successfully prepared via starved seeded semi-batch emulsion polymerization.The resultant SCLFAL is characterized by Fourier transform infrared(F... Novel self cross-linking fluorinated acrylic latex(SCLFAL) has been successfully prepared via starved seeded semi-batch emulsion polymerization.The resultant SCLFAL is characterized by Fourier transform infrared(FTIR) spectrometry.Contact angle (CA) and glass transition temperature(T_g) of the film are investigated.Results show that CA and T_g of the film can be improved when the moderate amount of HPMA is introduced into the mixed monomers. 展开更多
关键词 Self cross-linking fluorinated acrylic latex PREPARATION Comparative study
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Effect of cationic monomer on properties of fluorinated acrylate latex 被引量:6
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作者 Li Jun Chen 《Chinese Chemical Letters》 SCIE CAS CSCD 2012年第6期736-740,共5页
Cationic fluorinated acrylate latex was prepared via semi-continuous emulsion copolymerization of cationic monomer and other monomers. The resultant latex and its film were characterized with dynamic light scattering ... Cationic fluorinated acrylate latex was prepared via semi-continuous emulsion copolymerization of cationic monomer and other monomers. The resultant latex and its film were characterized with dynamic light scattering detector and contact angle meter. Influences of amount of DMDAAC on the properties of resultant latex and its film were investigated in detail. Results show that the particle size of the latex has the minimum value knd the zeta potential of the latex is increased when the amount of DMDAAC is increased. In addition, the particle size of the latex is unimodal distribution when the amount of DMDAAC is not more than 2.5%. However, the particle size of the latex is bimodal distribution when the amount of DMDAAC is more than 2.5%. The contact angle is varied slightly with the increase of amount of DMDAAC when it is not more than 2.5%. Nevertheless, the contact angle is decreased with the increase of the amount of DMDAAC when it is more than 2.5%. 展开更多
关键词 Cationic fluorinated acrylate latex Cationic monomer Semi-continuous emulsion polymerization PROPERTIES
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