Study on the initial stage of emulsion polymerization of vinyl acetate using poly(vinyl alcohol) as a protective colloid

2003 ◽  
Vol 281 (4) ◽  
pp. 337-342 ◽  
Author(s):  
Atsushi Suzuki ◽  
Makoto Yano ◽  
Tadanobu Saiga ◽  
Kenji Kikuchi ◽  
Takuji Okaya
Keyword(s):  
Emulsion Polymerization ◽  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Protective Colloid ◽  
Initial Stage

scholarly journals Process Characterization of Polyvinyl Acetate Emulsions Applying Inline Photon Density Wave Spectroscopy at High Solid Contents

Polymers ◽  
2021 ◽  
Vol 13 (4) ◽  
pp. 669
Author(s):  
Stephanie Schlappa ◽  
Lee Josephine Brenker ◽  
Lena Bressel ◽  
Roland Hass ◽  
Marvin Münzberg
Keyword(s):  
Light Scattering ◽  
Emulsion Polymerization ◽  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Polyvinyl Acetate ◽  
Density Wave ◽  
Poly Vinyl Alcohol ◽  
Photon Density ◽  
Particle Sizes ◽  
Protective Colloid

The high solids semicontinuous emulsion polymerization of polyvinyl acetate using poly (vinyl alcohol-co-vinyl acetate) as protective colloid is investigated by optical spectroscopy. The suitability of Photon Density Wave (PDW) spectroscopy as inline Process Analytical Technology (PAT) for emulsion polymerization processes at high solid contents (>40% (w/w)) is studied and evaluated. Inline data on absorption and scattering in the dispersion is obtained in real-time. The radical polymerization of vinyl acetate to polyvinyl acetate using ascorbic acid and sodium persulfate as redox initiator system and poly (vinyl alcohol-co-vinyl acetate) as protective colloid is investigated. Starved–feed radical emulsion polymerization yielded particle sizes in the nanometer size regime. PDW spectroscopy is used to monitor the progress of polymerization by studying the absorption and scattering properties during the synthesis of dispersions with increasing monomer amount and correspondingly decreasing feed rate of protective colloid. Results are compared to particle sizes determined with offline dynamic light scattering (DLS) and static light scattering (SLS) during the synthesis.

scholarly journals Emulsion Polymerization of Vinyl Acetate in the Presence of Poly(vinyl alcohol) as Emulsifier

1972 ◽  
Vol 3 (2) ◽  
pp. 226-233 ◽  
Author(s):  
Sadao Hayashi ◽  
Kiyoji Iwase ◽  
Nobumasa Hojo
Keyword(s):  
Emulsion Polymerization ◽  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol
Sign in / Sign up

Export Citation Format

Share Document