Identify the monomer used in preparation of polyacrylonitrile?

Step-by-step solution

The polymer polyacrylonitrile (PAN) derives its name directly from its monomer acrylonitrile, an addition polymer formed through vinyl polymerization. Acrylonitrile has the structure H₂C=CH-CN , featuring a vinyl group and nitrile functionality that polymerizes via the carbon-carbon double bond. Evaluating the options: H₂C=C(CH₃)-CH=CH₂ (isoprene) produces polyisoprene F₂C=CF₂ (tetrafluoroethylene) yields polytetrafluoroethylene H₂C=CH-CN (acrylonitrile) forms polyacrylonitrile H₂C=CH-CH=CH₂ (1,3-butadiene) generat