It is used as an emulsion in water, and as a binder in paints and coatings. It belongs to the polyvinyl esters family with the general formula: RCOOCHCH 2. ![]() Polyvinyl acetate, PVA, poly (ethenyl ethanoate), poly (1-acetyloxiethylene) is a rubbery synthetic polymer with the formula (C 4H 6O 2) n. It can be hazardous to the environment, especially if it is mixed with water and comes in contact with fish. This is because PVA releases toxic fumes when burned. In addition, PVA is not environmentally friendly because of its non-biodegradability which can contaminate the environment if not properly handled. Hence, high cost of this raw material (binder) and consequently high cost of production due to the use of expensive binder. In the constituents for production of emulsion house paints, binder (PVA) usually takes between 17 to 33% total cost of production depending on paint type and this raw material is not available locally, therefore imported. The constituents generally used for the production of emulsion house paints include prime pigments, solvents, extenders pigments, binders and additives. The processes involved in paint production, quality and performance of emulsion paint depends largely on the properties of its constituents and the ratios of these constitutions. Therefore, emphasis was given to this class.Įmulsion house paint is a water based paint principally used for internal and external surface coatings, mostly in buildings for appearance and protection. Of these three major categories, emulsion house paints fall in the first category. Paints and coatings can be classified into the following major categories architectural coatings, product coatings for original equipment manufacturers and special purpose coatings. The pigmented varnish – the paint – is sometimes called an enamel, lacquer, finish or topcoat, meaning that it is the last coat to be applied and the one seen when the coated object is examined. If the pigment is omitted, the material is usually called a varnish. Paint is a loosely word covering a whole variety of materials enamels, lacquers, varnishes, undercoats, surfacers, primers, sealers, fillers, stoppers and many others. Paint was traditionally used to describe pigmented materials as distinct from clear films which are more properly called lacquers or varnishes. Surface coating is the more general description of any material that may be applied as a thin continuous layer to a surface. The terms ‘paint’ and ‘surface coating’ are often used interchangeably. Keywords: High Cost, Supplement, Quality Parameters, Polyvinyl Acetate, Gum Arabic, Emulsion Paint Therefore, gum Arabic (Acacia Senegal) can be used as a supplement to PVA in emulsion paint production in all proportions investigated except Sample F. ![]() Samples B to E thus resulted in quality paints without any blemish. However, it was observed that paint brightness diminished with increased gum Arabic composition Sample F being badly affected. ![]() All the six samples gave high quality emulsion paints in terms of opacity, adhesion, ease of application and coverage. ![]() Standard emulsion paint formulation and method of production were employed. Abstract: In view of the high cost of paints as a result of importation of raw materials and the need to use our locally available raw materials for economic and industrial developments, a study was carried out for the production of emulsion house paint by supplementing imported synthetic binder (polyvinyl acetate, PVA) with a locally available binder (gum Arabic, GA) in six different proportions labelled Sample A (100% PVA), Sample B (80% PVA: 20% GA), Sample C (60% PVA: 40% GA), Sample D (40% PVA: 60% GA), Sample E (20% PVA: 80% GA) and Sample F (100% GA).
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