Is AIBN a thermal initiator?

AIBN decomposes on heating between 60 and 80 °C. For temperatures above 90 °C, AIBN is therefore not a suitable initiator due to the high decomposition rate.

What is the dissociation temperature of the initiator?

The most common initiator is 2,2′-azobisisobutyronitrile (AIBN), which decomposes on heating (60–120 °C) or photolysis to two isobutyronitrile radicals.

What is the purpose of AIBN in the chlorination reaction?

The AIBN is free radical initiators in the mechanism of for addition polimerization reaction. You can replace it by hydroperoxide or peroxide coumpond such as Benzoyl peroxide (BPO).

How does AIBN work?

AIBN decomposes to create the 2-cyano-2-propyl radical, which then abstracts the hydrogen off of tributyltin hydride. This results in a tributyltin radical, which can be used in numerous reactions. For example, this radical could be used to remove a bromine from an alkene.

How is the decomposition of AIBN done at room temperature?

The decomposition of 2,2′-azobis (isobutyronitrile) (AIBN) at room temperature was studied in emulsion gels, with and without silica, using UV/visible spectroscopy.

What can AIBN be used for in polymerization?

AIBN is very commonly used as an initiator for the polymerization of vinyl monomers. The decomposition of AIBN follows a homolytic scission mechanism that has been extensively investigated [10], [11], [12], [13].

Which is the correct formula for azobisisobutyronitrile ( AIBN )?

Azobisisobutyronitrile (abbreviated AIBN) is an organic compound with the formula [(CH 3) 2C(CN)] 2N 2. This white powder is soluble in alcohols and common organic solvents but is insoluble in water. It is often used as a foamer in plastics and rubber and as a radical initiator.

What is the mechanism of the reaction of AIBN?

Mechanism. In its most characteristic reaction, AIBN decomposes, eliminating a molecule of nitrogen gas to form two 2-cyanoprop-2-yl radicals: These radicals can initiate free-radical polymerizations and other radical-induced reactions.