الفهرس 
AN OVERVIEWOnly 14 pages are availabe for public view
 |  | from | 347 |  |  |
| | | from | 347 | | |
Abstract
The original work presented in thconcentrations (3, 6, 9 and 12 %) were investigated and evaluated. The
obtained experimental results revealed that the presence of nHPs in the
blank paint are highly enhanced both basic and anticorrosion properties of the coated films.
Second Part This part concerns with the preparation of anticorrosive composite
emulsion paints using poly aniline (P ANI) conducting polymer nanoparticles as anti corrosive inhibitors. The binder used in this context is Vinyl acetate-VeoVa10 copolymer (VAc/Veovalf)
copolymer) which was prepared via semi-continuous emulsion polymerization technique. Polyaniline nanoparticles (P ANI NPs) has been synthesized via chemical oxidative polymerization technique. The prepared materials were characterized via Gel permeation
chromatography (GPC), Infra red (FT -IR), Transmission electron
Microscope (TEM) and Differential scanning calorimetry (DSC».
Composite emulsions (CEs) were simply formed by individual mixing of the prepared P ANI of different concentrations with VAc/VeoVa10
copolymer based latex to produce the composite emulsions (CE). The chemical and basic properties including (acid - base resistance, adhesion, washability, gloss, opacity, whiteness, hardness, impact, and weathering) as well as the anticorrosion properties of the blank paint films and the paint films containing P ANI nanoparticles (NPs) of
different concentrations (3, 6, 9, and 12 %) were evaluated. The obtained experimental results revealed that the presence of P ANI NPs in the blank paint are highly enhanced both basic and anticorrosion properties of the painted films.
is thesis is undertaken with aview to innovate new hybrid materials such as silica and polyanilire for improving the properties of the prepared vinylacetate water-based paints which are well known by its poor water resistance, poor wash-ability, low hardness and corrosive to some metals. The presence of these hybrid materials enhance the water resistance, wash-ability, hardness, adhesion power and anti-corrosive properties.
The present work has two main experimental parts
First Part
In this part, a novel anti corrosive emulsion-type paints were prepared by utilizing organic/inorganic nanohybrid particles (nHPs) of composition (1:1) based on polyaniline (P ANI) and nanosilica.
Polyaniline (P ANI) and nanosilica were synthesized via chemical
oxidative and sol-gel polymerization techniques respectively. The
prepared materials were characterized via (Gel permeation chromatography (GPC), Infra red (FT -IR), Transmission electron Microscope (TEM) and Differential scanning calorimetry (DSC)). The binder used in this context is polyvinyl acetate (PVAc). Nanohybrid
particIes/PVAc emulsion composites (nHPs ECs) were simply formed
by individual mixing of the prepared neat P ANI and nHPs of composition (1:1) with PVAc to produce the corresponding nanohybrid particIes/PVAc emulsion composites EC1 and EC2 respectively. The chemical and basic properties including (acid and alkali resistance, adhesion, washability, gloss, opacity, whiteness, hardness, impact, and weathering) as well as the anticorrosion properties of the blank paint films and the paint films containing neat P ANI and nHPs of different concentrations (3, 6, 9 and 12 %) were investigated and evaluated. The
obtained experimental results revealed that the presence of nHPs in the
blank paint are highly enhanced both basic and anticorrosion
properties of the coated films.
Second Part
This part concerns with the preparation of anticorrosive composite
emulsion paints using poly aniline (P ANI) conducting polymer nanoparticles as anti corrosive inhibitors. The binder used in this context is Vinyl acetate-VeoVa10 copolymer (V Ac/Veovalf) copolymer) which was prepared via semi-continuous emulsion
polymerization technique. Polyaniline nanoparticles (P ANI NPs) has
been synthesized via chemical oxidative polymerization technique. The
prepared materials were characterized via Gel permeation chromatography (GPC), Infra red (FT -IR), Transmission electron Microscope (TEM) and Differential scanning calorimetry (DSC».
Composite emulsions (CEs) were simply formed by individual mixing
of the prepared P ANI of different concentrations with VAc/VeoVa10
copolymer based latex to produce the composite emulsions (CE). The
chemical and basic properties including (acid - base resistance, adhesion, washability, gloss, opacity, whiteness, hardness, impact, and weathering) as well as the anticorrosion properties of the blank paint films and the paint films containing P ANI nanoparticles (NPs) of different concentrations (3, 6, 9, and 12 %) were evaluated. The
obtained experimental results revealed that the presence of P ANI NPs in the blank paint are highly enhanced both basic and anticorrosion properties of the painted films.