Multiple choice

Among the following polymers, all are used as adhesives, except ______________.

  1. PVAc

  2. dextrin

  3. PU

  4. ER

  5. PCTFE
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

An adhesive is any substance applied to the surfaces of materials that binds them together and resists separation. The examples of polymers used as adhesives are- polyvinyl acetate (PVAc), dextrin from vegetable starch, cyanoacrylates, polyurethane (PU), epoxy resins (ER) etc. Polychlorotrifluoroethylene (PCTFE) is stable to heat and thermal attacks, has high tensile strength and non wetting properties. It is used in the making of valves, seals, gaskets etc.

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