Progress in the field of bi- and poly-functional free-radical polymerization initiators

Biocatalytic Polymerization in Exotic Solvents

“…Recently, Du Prez published an extensive review with a complete overview of the state -of -the -art on such heterofunctional initiators for polymerization [51] . Other reviews describe bi -and polyfunctional initiators for free radical polymerization [52,53] . Perhaps the biggest advantage of bifunctional (or indeed, multifunctional initiators) is the ability to combine vastly different polymerization techniques without the need for intermediate transformation and protection steps.…”

Novel azo-peresters radical initiators used for the synthesis of acrylic pressure-sensitive adhesives

“…Due to the similarity of azo and peroxy groups decomposition temperatures those compounds were not suitable to obtain welldefined block copolymers when both stages of polymerization were initiated thermally. Azo-peroxy compounds in comparioson to traditional free radical initiators have some other advantages, such as higher initiation rate [9]. Compounds described in this article belong to azoperesters group.…”

Synthesis of block copolymers by radical polymerization and telomerization

“…By choosing properly the nature of these functions, it is possible to produce initiating radicals in two or more steps either thermally, photochemically or in the presence of electronic radiation.Various multifunctional initiators have been synthesized and successfully used. Work in this field has been very well summarized by Ivanchev [15] and Simionescu et al [13]. The initiators have been classified according to their ways of generating radicals and their functional groups.…”

“…Decomposition of a multifunctional free radical initiator included in the initiator. Such studies have been performed in some cases [13,15,21] and Table 1 lists several kinetic data relative to the dissociation constants kid of different polyfunctional initiators. Depending on the types of monomers used and on the predominant mechanism of termination, it is either the azo or the perester group which is decomposed first.…”

“…Thus, several block copolymers have produced a wide range of materials with tailorable properties depending on the nature and length of homosequences. They have found significant commercial applications [3][4][5][6][8][9][10][11][12][13][14] such as adhesives and sealants, surface modifiers for fillers and fibers, crosslinking agents for elastomers, additives for resin gelification and hardening, compatibilizing agents or stable emulsions of homopolymer blends that can find applications in recovering and recycling plastic waste. A number of synthetic methods have been successfully developed for the synthesis of block copolymers.…”