Synthèse et copolymérisation avec l'acrylamide de macromonomères d'acrylate de dodécyle |
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Authors: | Christian Bonardi,Bernard Boutevin,Yves Pi trasanta,Mohammed Taha |
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Affiliation: | Christian Bonardi,Bernard Boutevin,Yves Piétrasanta,Mohammed Taha |
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Abstract: | Graft copolymers of well-defined structure and composition were prepared by radical copolymerization of acrylamide and poly(dodecyl acrylate) macromonomers. The macromonomers were prepared by telomerization of dodecyl acrylate in the presence of 2-mercaptoethanol as a transfer agent, followed by reaction with acryloyl chloride. Poly(dodecyl acrylate) macromonomers with M n = 1100, 1100, 2200 and 4600 were synthesized. The kinetics of the radical telomerization of dodecyl acrylate with 2-mercaptoethanol and AIBN was studied at 66°C in THF. Under these conditions we obtained the transfer constant CT = 0,9. The graft copolymerization of acrylamide with the poly(dodecyl acrylate) macromonomer was carried out in the presence of the transfer agent C6F13C2H4SH. If C0 = [AIBN]/[Acrylamide] = 0,01 and R0 = [C6F13C2H4SH]/[Acrylamide] = 0,01, for acrylamide a DP n = 160 was obtained in all cases, for the macromonomer of M n = 1100 a DP n = 2,5, and for the macromonomer of M n > 1100 a DPn = 1. |
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