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In this work,by a combination of controlled ring-opening polymerization(CROP) and click reaction,we reported a facile and useful method to synthesize linear poly(ε-caprolactone) at attapulgite nanocomposites with well-defined structures.For this,first, the chlorine terminated attapulgite was prepared by the self-assembly of 3-chloropropyltrimethoxysiIane from the surfaces of attapulgite.And then,the terminal chlorines of modified attapulgite were substituted with azido groups.As the second step,linear propargyl-terminated poly(ε-caprolactone)(PCLs) with different molecular weights were synthesized by the CROP ofε-CL monomer in toluene with Sn(Oct)_2 as a catalyst and propargyl alcohol as an initiator.Finally,the azido-terminated attapulgites were reacted with propargyl-terminated PCLs via the click reactions.
In this work, by a combination of controlled ring-opening polymerization (CROP) and click reaction, we reported a facile and useful method to synthesize linear poly (ε-caprolactone) at attapulgite nanocomposites with well-defined structures. For this, first, the chlorine terminated attapulgite was prepared by the self-assembly of 3-chloropropyltrimethoxysi Iane from the surfaces of attapulgite. And then then, the terminal chlorines of modified attapulgite were substituted with azido groups. As the second step, linear propargyl-terminated poly (ε-caprolactone ) (PCLs) with different molecular weights were synthesized by the CROP of ε-CL monomer in toluene with Sn (Oct) _2 as a catalyst and propargyl alcohol as an initiator. Finaally, the azido-terminated attapulgites were reacted with propargyl-terminated PCLs via the click reactions.