Sulfates salt
Ammonium persulfate is the most popular oxidant used for aniline polymerization since it is suitable for mass production of PANI; some studies have investigated the use of other oxidants such as iron(III) chloride/ozone or Fe3+ present in clay as interlayer cation.
Granules
Granules containing 40–90% of sodium or ammonium persulfate breaker and 10–60% of an inorganic powdered binder, such as clay, have been described (McDougall et al., 1993) as acting as a delayed breaker.
Reactive Extrusion
Blends of Starch and Poly(acrylamide)
Starch-poly(acrylamide) copolymers have been prepared by reactive extrusion with ammonium persulfate as initiator. The extrusion temperature had no significant impact on acrylamide conversion.
For the grafting of various substrates, ammonium persulfate, ceric ammonium nitrate, or ferrous ammonium sulfate/hydrogen peroxide can be used as initiator.
Gel Breakers
Granules
Granules may also be helpful in delayed breaking. Granules with 40-90% of sodium or ammonium persulfate breaker and 10-60% of an inorganic powdered binder, such as clay, have been described. The granules exhibit a delayed release of the breaker.
High-Temperature Engineering Thermoplastics
Fluoropolymers Production
Fluoropolymers are typically produced by the free radical reaction of the monomers. The free radical initiators used are ammonium persulfate, potassium persulfate, disuccinic peroxide, or other organic peroxides.
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