Please somebody answer to my question:
How the macro-monomer containing one double bond with long chain structure can be activated with small monomer such as acrylic acid or maleic anhydride in copolymerization reaction? Because due to the bulky structure of the macro-monomer, it doesn't like to participate in the copolymerization, and consequently the conversion of the polymerization is reduced. This is important to note that this reaction is carried out using initiator and reducing agent (oxidation - reduction system) and heat.
Thank you very much for your response
The important class of graft copolymers are made by 3 general methods: "grafting onto", "grafting from", and the "macromonomer" method (also called "grafting through"). Undergraduate polymer chemistry students are supposed to know the first 2 methods but the macromonomer approach requires explanation: it utilizes a pre-formed side chain that has a polymerizable group at one end of the chain (macromonomer). Grafting occurs when a "small" monomer is polymerized in the presence of the macromonomer, resulting in the backbone being "sewn" through the ends of the side chains in copolymerization. For example, polystyrene macromonomers are made and could randomly copolymerize with e.g. 1,3-butadiene , in situ, and by using suitable reagent & reaction conditions, to produce a grafted copolymer.
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