Polyvinyl acetate formula

Polyvinyl acetate or PVA is a rubbery synthetic polymer. It can also be referred to as PVAc. It is prepared by polymerization of vinyl acetate, also referred to as VAM. Partial or complete hydrolysis of the polymer is used to prepare polyvinyl alcohol. Hydroylized alcohol product is typically in the 87% to 99% range (converted PVA). It was discovered in Germany by Dr. Fritz Klatte in 1912. Image File history File links polyvinyl acetate formula File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Image File history File links polyvinyl acetate formula File history Legend: (cur) = this is the current file, (del) = delete this old version, (rev) = revert to this old version. ... Latex being collected from a tapped rubber tree Rubber is an elastic hydrocarbon polymer which occurs as a milky colloidal suspension (known as latex) in the sap of several varieties of plants. ... Synthetic polymers are often referred to as plastics, such as the well-known polyethylene and nylon. ... This article needs to be wikified. ... Hydrolysis is a chemical reaction or process in which a molecule is split into two parts by reacting with a molecule of water, which has the chemical formula H2O. One of the parts gets an OH- from the water molecule and the other part gets an H+ from the water. ... Chemical structure of polyvinyl alcohol Polyvinyl alcohol (PVOH, PVA, or PVAL) is a water-soluble synthetic polymer. ... Fritz Klatte (1880-1934) was the discoverer of polyvinyl acetate, with German patent (GP 281687 1912) for its preparation from acetylene gas. ... 1912 (MCMXII) was a leap year starting on Monday in the Gregorian calendar (or a leap year starting on Tuesday in the 13-day-slower Julian calendar). ...

PVA is sold, as an emulsion in water, as an adhesive for porous materials, particularly wood. It is the most commonly used wood glue, both as "white glue" and the yellow "carpenter's glue", the former also used extensively to glue other materials like paper and cloth and also holds cigarettes together. PVA is widely used in book making and book arts due to its flexibility and because it is not acidic like many polymers. Elmer's Glue is a popular brand of white PVA glue sold in the United States. A. Two immisicble liquids, not emulsified; B. An emulsion of Phase B dispersed in Phase A; C. The unstable emulsion progressively separates; D. The surfactant (purple outline) positions itself on the interfaces between Phase A and Phase B, stabilizing the emulsion An emulsion is a mixture of two immiscible (unblendable... An adhesive is a compound that adheres or bonds two items together. ... Used in geology, building science and hydrogeology, the porosity of a porous medium (such as rock or sediment) is the proportion of the non-solid volume to the total volume of material, and is defined by the ratio: where Vp is the non-solid volume (pores and liquid) and Vm... Trunks A tree trunk as found at the Veluwe, The Netherlands Wood is derived from woody plants, notably trees but also shrubs. ... Wood glues are adhesives used to tightly bond pieces of wood together. ... Wood glues are adhesives used to tightly bond pieces of wood together. ... Piece of Letter paper Paper is a thin material produced by the amalgamation of plant fibres, which are subsequently held together without extra binder, largely by hydrogen bonds and fiber entanglement. ... It has been suggested that Textile be merged into this article or section. ... Elmers Products, Inc, is the manufacturer of Elmers Glue-All and other crafts and home repair products, including Krazy Glue, Ross Glue, ProBond adhesives, and X-Acto craft knives. ...

It is a common copolymer with more expensive acrylics, used extensively in paper, paint and industrial coatings, referred to as vinyl acrylics. It can also be used to protect cheese from fungi and humidity. It is slowly attacked by alkali, forming acetic acid as a hydrolysis product. Boron compounds like boric acid or borax will form tackifying precipitates. Cheese is a solid food made from the milk of cows, goats, sheep, and other mammals. ... Divisions Chytridiomycota Zygomycota Ascomycota Basidiomycota The Fungi (singular: fungus) are a large group of organisms ranked as a kingdom within the Domain Eukaryota. ... Humidity is the concentration of water vapor in the air. ... Acetic acid, also known as ethanoic acid, is an organic chemical compound best recognized for giving vinegar its sour taste and pungent smell. ...

PVA is also commonly recommended for use in making papier mache. Papier-mâché (French, chewed-up paper) is a construction material that consists of pieces of paper, sometimes reinforced with textiles, stuck together using a wet paste (e. ...

External links

• Formula of PVA

• Links to external chemical sources.