Please tell me where I can find articles about polymers synthesis, I need one for presentation.

Thank you so much in advance

A good place to start is the Wikipedia page

http://en.wikipedia.org/wiki/Polymer

The polymerisation syntheses are then largely divided between condensation polymers

http://www.materialsworldmodules.org/resources/polimarization/4-condensation.html

and free radical (or addition) polymers

http://www.materialsworldmodules.org/resources/polimarization/3-addition.html