Kinetic Theory of Hyperbranched Polymerization

Polydispersity and Molecular Weight Distribution of Hyperbranched Graft Copolymers via “Hypergrafting” of ABm Monomers from Polydisperse Macroinitiator Cores: Theory Meets Synthesis

“…After the first introduction of the term “hyperbranched polymer”, excellent works pioneering the theoretical discipline of AB 2 polycondensation − followed. It was found that for the polycondensation of AB m monomers the presence of multifunctional cores plays a major role to lower the PD (polydispersity index M w / M n ) of the resulting hyperbranched polymers. , A recent review describes the overall progress in the field of kinetic theory of hyperbranched polymers comprehensively . In an important work by Radke, Litvinenko, and Müller, a general expression for the PD of hyperbranched polymers prepared via the self-condensing vinyl polymerization (SCVP) of AB 2 inimers in the presence of multifunctional cores B f ( f : number of core functionalities) was developed (eq ) …”

“…28,29 A recent review describes the overall progress in the field of kinetic theory of hyperbranched polymers comprehensively. 30 In an important work by Radke, Litvinenko, and Muller, a general expression for the PD of hyperbranched polymers prepared via the self-condensing vinyl polymerization (SCVP) 31 of AB 2 inimers in the presence of multifunctional cores B f (f: number of core functionalities) was developed (eq 1). 32 = + f PD 1 1…”

The electrophilic effect of thiol groups on thiol–yne thermal click polymerization for hyperbranched polythioether

“…Hyperbranched polymers (HPs) have highly branched specific three-dimensional architecture, abundant intramolecular cavities, and peripheral functional groups for diverse potential applications. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Recently, hyperbranched polythioether (HPTE) has attracted significant interest due to its large molecular weight (MW) and high degree of branching (DB), as well as its simple, rapid, and scalable synthesis. [18][19][20][21] In addition, since the chain transfer constant of thiol group is much larger (about 70 times) than those of functional groups such as hydroxyl, carboxyl, amino, epoxy, azide groups, these available functional groups could be facilely introduced into HPTEs via radical initiated thiol-yne polymerization of AB 2 or A 2 + CB 2 type small monomers or macromonomers.…”

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19] Recently, hyperbranched polythioether (HPTE) has attracted significant interest due to its large molecular weight (MW) and high degree of branching (DB), as well as its simple, rapid, and scalable synthesis. [18][19][20][21] In addition, since the chain transfer constant of thiol group is much larger (about 70 times) than those of functional groups such as hydroxyl, carboxyl, amino, epoxy, azide groups, these available functional groups could be facilely introduced into HPTEs via radical initiated thiol-yne polymerization of AB 2 or A 2 + CB 2 type small monomers or macromonomers. [21][22][23][24] As declared by Finzi et al in 1930, 25 two-step consecutive additions, that is, first the addition of a thiol to an alkyne and the subsequent addition of another thiol to the resultant vinyl thioether, are involved in a complete thiol-yne reaction.…”