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Abstract
The original work presented in this thesis was divided into two main
parts, the first part focused on the preparation of emulsion terpolymer latex
based on styrene, butyl acrylate and acrylic acid. A new developed redox
initiation system composed of KPS as oxidizing agent and admixture of
ASBS and BSBS was used as initiation system for the polymerization
reaction.
The kinetics of the polymerization reaction was studied in terms of
initiator and monomers concentrations as well as temperature variation. The
obtained terpolymer was characterized in terms of IR, TGA, DSC and
rheological studies. The prepared terpolymer emulsion latex was evaluated as
emulsion paint with respect to Viscosity, Drying time, Hiding power,
Hardness, Adhesion, Abrasion and Gloss.
The second part was undertaken to prepare a new flocculating agent via
solution terpolymerization of DMAEMA, VP and VAc. The kinetics of the
polymerization was investigated in presence of the previously suggested
developed redox initiation system. The prepared terpolymer was characterized
by IR, TGA and DSC. The obtained terpolymer solution was used as hybrid in
River Nile clarification using flocculation technique. The Study of the best
flocculation condition was determined in terms of flocculating dosage in
combination with alum (industrially commercial product). This was taken in
view to reduce the concentration of the used alum in flocculation due to its
serious effect to health according to the recommendation of WHO reports.
The clarified water was examined under the following analysis pH,
Conductivity, Turbidity, Organic matter determination, Sulphate and Silica
content.
Keywords: Emulsion polymerization, solution polymerization, painting,
flocculation, water clarification, styrene, butyl acrylate,
dimethylaminoethyl methacrylate, vinyl pyrrolidone,
devolved redox initiation system, characterization.