Synthesis of hyperbranched poly(tert-butyl acrylate) by self-condensing atom transfer radical polymerization of a macroinimer

“Green” Atom Transfer Radical Polymerization: From Process Design to Preparation of Well-Defined Environmentally Friendly Polymeric Materials

“…The successful ATRP of several inimers has been reported. [460][461][462][463][464][465][466] Some of the prepared hyperbranched polymers contained a variety of polar functional groups such as carboxylate, 467 hydroxyl, 468 substituted amine, 469 or disulfide, 430 and they can be particularly useful for coatings applications. Other CRP techniques employing inimers have also been used.…”

Synthesis and Characterization of Hyperbranched Polymers from the Polymerization of Glycidyl Methacrylate and Styrene Using Cp2TiCl as a Catalyst

“…Both copolymerization processes permit control of the molecular weight distribution, as well as the degree of branching (DB), through the ratio of the initial concentrations of the monomer and inimer, g ¼ [M] 0 /[I] 0 . [36] It was reported that the Cp 2 Ti(III)Cl complex can catalyze a variety of radical reactions, including the radical ring opening (RRO) of epoxides. Recently, Asandei's group extended the reaction to radical polymerization, for example, the radical polymerization of styrene (St) initiated by radical ring-opening (RRO) of epoxide, which demonstrated a living nature.…”

“…These polymers may potentially be utilized in biomaterials, conducting polymers and photoelectric materials. Alternatively, hyperbranched polymers can be prepared via SCVP of ''macroinimers'', [35][36][37] i.e., heterotelechelic macromolecules including both an initiating site and a polymerizable moiety. Both copolymerization processes permit control of the molecular weight distribution, as well as the degree of branching (DB), through the ratio of the initial concentrations of the monomer and inimer, g ¼ [M] 0 /[I] 0 .…”

Molecular parameters of hyperbranched polymers made by self-condensing vinyl polymerization of macroinimers

“…However, in our case AB* represents a macromolecule with c linear units, i. e. it has a number-average degree of polymerization, c. Scheme 1 presents an example of the inimer 2-(2-bromopropionyloxy)ethyl acrylate [25,26] and of the corresponding poly(tert-butyl acrylate) macroinimer. [16] Consequently, a polymacroinimer consists of exactly the same types of active centers as a polyinimer, namely a double bond A (one per molecule), initiating centers B* and propagating centers A*, the latter formed in the initiation process between two AB* macromolecules and consecutive reactions.…”

“…Recently, we reported the SCVP of a macroinimer, [16] i. e., a heterotelechelic macromolecule possessing both an initiating and a polymerizable moiety, leading to soluble Full Paper: The molecular weight averages and the degree of branching, DB, of a hyperbranched polymer obtained by self-condensing vinyl polymerization (SCVP) of a macroinimer A-(m) c -B* is calculated by modifying the existing equations for SCVP. The polydispersity is lowered by a factor (c + 1), where c is the degree of polymerization of the macroinimer.…”