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Introduction of Polyvinyl acetate

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Introduction of Polyvinyl acetate

Post  gill on Thu Nov 25, 2010 1:16 am

Polyvinyl acetate, PVA, PVAc, poly(ethenyl ethanoate), is a rubbery synthetic polymer with the formula (C4H6O2)n. It belongs to the polyvinyl esters family with the general formula -[RCOOCHCH2]-. It is a type of thermoplastic.
It should not be confused with the related polymer polyvinyl alcohol, which is called PVA also (PVAc could be considered a technically correct abbreviation for polyvinyl acetate and would aid in avoiding such confusion).
Polyvinyl acetate is a component of a widely-used type of glue, referred to variously as wood glue, white glue, carpenter's glue, school glue or PVA glue.
The degree of polymerization of polyvinyl acetate typically is 100 to 5000. The ester groups of the polyvinyl acetate are sensitive for alkali and will slowly convert PVAc into polyvinyl alcohol and acetic acid.
Under alkaline conditions, boron compounds, such as boric acid or borax causes the polymer to cross-link forming tackifying precipitates or slime.

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Introduction of Polyvinyl acetate

Post  meenakshijsr on Tue Nov 30, 2010 12:49 am

Greetings
Nice to see you all and great to be a part of the community. Hope to get help from you, thanks!
developpement personnel Cool

meenakshijsr

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