Grafting-through approach preparation

Conventional fiee radical polymerization of macromonomers remains the most widelyused grafting through approach due to its facile implementation and the great tolerance of the radical process toward many chemically artive and functional groups. The successftil preparation of molecular bmshes via... 

The first component PS brushes were prepared using the grafting-to approach the second component PEGMA brushes were obtained through SIP. The thickness of the brushes obtained through SIP could be tuned in the 1-65 nm range. 

Figure 1 Synthetic strategies forthe preparation of molecular bmshes and their analogs (a) grafting through (b) grafting onto (X and Y are functional groups capable of coupling) (c) grafting from (I is an initiating group) and (d) block copolymer self-assembly approach.

Segmented terpolymers of poly(alkyl methacrylate)-g-poly(D-lactide)/poly(dimethylsiloxane) (PLA/PDMS) were prepared by combination of a grafting through technique (macromonomer method) and controlled/living radical polymerization such as atom transfer radical polymerization (ATRP) or reversible addition-fragmentation chain transfer polymerization. In a single-step approach, the low molecular weight methacrylate monomer (methyl methacrylate... 

Well-defined graft copolymers are most frequently prepared by either a grafting from or a grafting through controlled polymerization process however, the development of click chemistry has led to a third approach based on site-specific grafting to chemistry. 

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