Light-scattering studies of aggregation in aqueous solutions of poly(vinyl alcohol co-vinyl acetate) copolymer

1988 ◽  
Vol 84 (4) ◽  
pp. 1211 ◽  
Author(s):  
Nicholas J. Crowther ◽  
Donald Eagland
Keyword(s):  
Light Scattering ◽  
Aqueous Solutions ◽  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Acetate Copolymer

Effect of poly(vinyl alcohol-co-vinyl acetate) copolymer blockiness on the dynamic interfacial tension and dilational viscoelasticity of polymer–anionic surfactant complex at the water–1-chlorobutane interface

Soft Matter ◽  
2015 ◽  
Vol 11 (13) ◽  
pp. 2665-2672 ◽  
Author(s):  
Leonard Ionut Atanase ◽  
Sophie Bistac ◽  
Gérard Riess
Keyword(s):  
Elastic Modulus ◽  
Interfacial Tension ◽  
Vinyl Acetate ◽  
Anionic Surfactant ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Surfactant Complex ◽  
Low Interfacial Tension ◽  
Dilational Viscoelasticity ◽  
Acetate Copolymer

PVA aggregates lead to low interfacial tension γi and elastic modulus E′ values whereas these values are increased, with increasing SDS concentrations, for PVA–SDS complexes.

Light scattering and viscoelasticity study of poly(vinyl alcohol)–borax aqueous solutions and gels

Polymer ◽  
2005 ◽  
Vol 46 (15) ◽  
pp. 5541-5549 ◽  
Author(s):  
Hsiu-Li Lin ◽  
Yuan-Feng Liu ◽  
T. Leon Yu ◽  
Wen-Horng Liu ◽  
Syang-Peng Rwei
Keyword(s):  
Light Scattering ◽  
Aqueous Solutions ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol

Effect of Acetate Distribution on Surface Segregation in Poly(vinyl alcohol-co-vinyl acetate) Copolymer Films

Langmuir ◽  
1996 ◽  
Vol 12 (5) ◽  
pp. 1296-1302 ◽  
Author(s):  
Martin A. Helfand ◽  
John B. Mazzanti ◽  
Matilda Fone ◽  
Robert H. Reamey ◽  
Patricia M. Lindley
Keyword(s):  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Surface Segregation ◽  
Poly Vinyl Alcohol ◽  
Copolymer Films ◽  
Acetate Copolymer

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.

Poly(vinyl alcohol-vinyl acetate) copolymer hydrogels: scattering and osmotic observations

1993 ◽  
Vol 26 (13) ◽  
pp. 3375-3380 ◽  
Author(s):  
Ferenc Horkay ◽  
Walther Burchard ◽  
Anne Marie Hecht ◽  
Erik Geissler
Keyword(s):  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Acetate Copolymer

Surface studies of solvent‐cast poly(vinyl alcohol‐co‐vinyl acetate) copolymer films

1992 ◽  
Vol 10 (4) ◽  
pp. 2419-2424 ◽  
Author(s):  
John B. Mazzanti ◽  
Robert H. Reamey ◽  
Martin A. Helfand ◽  
Patricia M. Lindley
Keyword(s):  
Vinyl Acetate ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Surface Studies ◽  
Copolymer Films ◽  
Solvent Cast ◽  
Acetate Copolymer
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