MACROMER acrylic copolymers

Earlier, successful attempts at physically crosslinking acrylic PSAs have been disclosed in the work of Husman et al. [98], Mancinelli and colleagues [99,100] and others. Instead of making ABA type structures, these authors studied and developed the use of high macromers in acrylic copolymers. Macromers are... 

Acrylated lignin derivatives are viewed as a new and promising class of functional macromers from lignin useful for the formulation of block and segmented copolymers. 

Figure 14. Stress-strain curves for 1 1 ethyl acrylate butyl acrylate copolymers with S16MA MACROMER at 30%, 40%, and 50% MACROMER contents.

Peptidyl macromers, in which a vinyl group was introduced at the N-terminus, were synthesized by solid-phase methodology. More specifically, the peptide H-Gly-Gly-Gly-Arg-Gly-Asp-Ser-Pro-OH had acrylic acid coupled to the N-terminus. The peptidyl macromer was cleaved and deprotected by standard methods. Copolymers of styrene with these peptidyl macromers were prepared by radical copolymerization in DMF soln. Cast films were prepared from a CHC13 soln of copolymers. 

Macromers by Controlled Initiation. New and unique graft copolymers can be prepared by copolymerizing macromers (macromolec-ular monomers) with conventional monomers. The synthesis of poly(butyl acrylate- -isobutylene), i.e., the first graft synthesis that involves carbocationic controlled initiation, has recently been accomplished by the following route (9) ... 

Kim and colleagues copolymerized a number of PECs with oligomers of d/-lactic acid and terminated the resulting copolymer with an acrylate group to form photopolymerizable macromers. The resulting crosslinked polymers were evaluated as biodegradable lubricants for stainless steel needles and a potential substitute for the nonabsorbable silicones used presently. 

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