The invention discloses an implementation method of reversible addition fragmentation chain
emulsion polymerization. 20-40 parts by weight of water, 0.1-2 parts by weight of bipolar
macromolecule reversible addition fragmentation chain
reagent, 1-20 parts by weight of
monomer and 0.005-0.2 part by weight of micromolecule reversible addition fragmentation chain
reagent are added into a reactor, stirring to be uniform is carried out, stirring is carried out,
nitrogen is led in, heating is carried out until the temperature is increased to be 50-80 DEG C, 0.004-0.08 part by weight of
water soluble initiator is added, initiated
polymerization is carried out for 10-60min, 0-2 parts by weight of alkaline
aqueous solution is added, and
polymerization is continued for 0.5-5h. The invention utilizes bipolar
macromolecule reversible addition fragmentation chain
reagent with special structure as emulsifier and
chain transfer agent, micromolecule reversible addition fragmentation chain is combined with
emulsion polymerization, alkali is replenished, so as to improve the stability of
emulsion; besides, process is simple,
energy consumption is low, reaction time is short, conversion rate is high, no traditional emulsifier is adopted, molecular weight is consistent with design value, and molecular
weight distribution is less than 2.0, thus having good industrialization prospect.