Author/Authors :
L?pez-Carrasquero، نويسنده , , Francisco and Mart??nez de Ilarduya، نويسنده , , Antxon and C?rdenas، نويسنده , , Mayrin and Carrillo، نويسنده , , Mirtha and Luisa Arnal، نويسنده , , Mar??a and Laredo، نويسنده , , Estrella and Torres، نويسنده , , Carlos and Méndez، نويسنده , , Bernardo and Müller، نويسنده , , Alejandro J.، نويسنده ,
Abstract :
A series of poly(mono n-alkyl itaconate)s, poly(methyl n-alkyl itaconate)s and poly(di n-alkyl itaconate)s with n=12, 14, 16, 18 and 22 have been prepared by radical polymerization. NMR studies point out that poly(methyl n-alkyl itaconate)s and poly(di n-alkyl itaconate)s are mainly syndiotactic polymers whereas poly(mono n-alkyl itaconate)s are obtained as almost atactic polymers. The characterization performed by DSC, solid state 13C CP/MAS NMR and X-ray diffraction, indicates that the side chains of poly(mono n-alkyl itaconate)s and poly(methyl n-alkyl itaconate)s derivatives with more than 12 carbon atoms are able to crystallize in hexagonal lattices. In the case of poly(di n-alkyl itaconate)s, when the side chains contain 12 or more carbon atoms, they are able to crystallize also in hexagonal lattices.
