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By
Engineer Nathan.J.Chifamba
B-tech Hons Chemical and Process Systems Engineering (Harare Institute of Technology ,Zimbab...
Polyvinyl Acetate
Brief History
• Poly(vinyl acetate) was discovered in Germany in 1912 by Fritz
Klatte.
• The monomer, vinyl acetate, was f...
INTRODUCTION
• it is a colorless, nontoxic thermoplastic resin prepared by the
polymerization of vinyl acetate. Polyvinyl ...
PROPERTIES
Under alkaline conditions, boron compounds such as boric acid or borax cause the polymer to cross-link.
A num...
Uses
• PVA water-based emulsions have been used as latex house paints.
• Making commonly used household white glues.
• Mak...
7
Mechanism (free radical Polymerization)
Free Radical Mechanism
Mechanism Continued
9
Any Questions!!!!
Polyvinylacetate
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Polyvinylacetate

  1. 1. By Engineer Nathan.J.Chifamba B-tech Hons Chemical and Process Systems Engineering (Harare Institute of Technology ,Zimbabwe) M-Tech Polymer Science and Technology (Amity University Gurgaon India) Polymer Technology Presentation (Dr Nidhi Goel lecturer) 22/12/2016
  2. 2. Polyvinyl Acetate
  3. 3. Brief History • Poly(vinyl acetate) was discovered in Germany in 1912 by Fritz Klatte. • The monomer, vinyl acetate, was first produced on an industrial scale by addition of acetic acid to acetylene with a mercury(I) salt but it is now primarily made by palladium catalyzed oxidative addition of acetic acid to ethylene. • Polyvinyl acetate is prepared by polymerization of vinyl acetate monomer (free radical vinyl polymerization of the monomer vinyl acetate).
  4. 4. INTRODUCTION • it is a colorless, nontoxic thermoplastic resin prepared by the polymerization of vinyl acetate. Polyvinyl acetate (PVAC) It is one of the most widely used water-dispersed resins. • Polyvinyl acetate water-based emulsions have been used as latex house paints, artists' media (since 1945), and common household white glues.. • Poly(vinyl acetate) (PVA, PVAc, poly(ethenyl ethanoate) • It is commonly referred to as wood glue, white glue, carpenter's glue, school glue, Elmer's glue in the US, or PVA glue) • It is an aliphatic rubbery synthetic polymer with the formula (C4H6O2)n. It belongs to the polyvinyl esters family with the general formula - [RCOOCHCH2]-.
  5. 5. PROPERTIES Under alkaline conditions, boron compounds such as boric acid or borax cause the polymer to cross-link. A number of microorganisms can degrade polyvinyl acetate(fungi and algae). Sets by the removal of water due to evaporation or absorption into a substrate.  Have good weather resistance Withstand water, grease, oil, and petroleum fuels degradation. good biodegradation resistance poor resistance to creep under load. Softens at 30-45C Soluble in benzene, chloroform, methanol, acetone, butyl acetate Insoluble in ligroin, diethyl ether, butanol, turpentine, water, oils Can absorb 3-5% water when immersed for 16 hours at 60 C. Burns with a dark yellow flame that smells of acetic acid. Combustible.
  6. 6. Uses • PVA water-based emulsions have been used as latex house paints. • Making commonly used household white glues. • Making wood glue. • Makin paper glue. • Adhesives. • Glues for porous material. • Used as a primer for drywall and other substrates. • As a mortar additive.
  7. 7. 7 Mechanism (free radical Polymerization)
  8. 8. Free Radical Mechanism
  9. 9. Mechanism Continued 9
  10. 10. Any Questions!!!!
  • RajamanickamArumugam

    Sep. 5, 2020
  • TamaryBlessingChifam

    Dec. 20, 2019
  • QasimBhutta2

    Jun. 3, 2019
  • pparvate

    Feb. 10, 2019

pva synthesis

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