2.2.2.2. Synthesis of PLAM by activation of carboxyl groups of PLABz
(reaction 2). In order to activate carboxyl groups, PLABz (3.824 g)
was dissolved in 60 mL of a mixture of CH2Cl2 and toluene (50% v/v),
at 70 C, in a three-neck flask and thionyl chloride (0.2 mL) was
added. Then, 0.5 mL of triethylamine (TEA) was used to neutralize
the reaction mixture under constant stirring during 3 h. The product
obtained was named PLAM and it was used without further
purification.