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Ambient Self-crosslinkable Acrylic Microemulsion in the Presence of Reactive Surfactants

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An ambient self-crosslinking polymer acrylic (ASPA) microemulsion was prepared by a modified microemulsion polymerization, in which reactive emulsifiers allyloxy nonylphenoxy poly(ethyleneoxy) ether (ANPE010) and ammonium sulphate allyloxy nonylphenoxy poly(ethyleneoxy) ether (DNS-86) and normal emulsifiers were employed. The ASPA microemulsions and their paint films were characterized with rotational viscometer, laser light scattering, Fourier transform infrared (FTIR), and differential scanning calorimetry (DSC). The results of the rheological properties showed that the apparent viscosity (TJa)י consistency factor (K), and zero shear viscosity (TJo) of the soap-free microemulsion containing reactive emulsifiers were increased, compared with those of conventional microemulsions prepared with normal emulsifiers. Compared with conventional microemulsions, the soap-free microemulsions showed fast drying speed and its films presented better water resistance. At last, the particle size and distribution were characterized. The results obtained showed that the soapfree emulsions were monodisperse nano-emulsions

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