Crystallization, morphology, and dynamic mechanical behavior of supramolecular [60]fullerene-containing polyethylene-co-acrylic acid)

A multifunctional [60]fullerene derivative AEAF was melt-mixed with polyethylene-co-acrylic acid) (PEAA20). The strong interaction between AEAF and PEAA20, as shown by x-ray photoelectron spectroscopy, enables AEAF to be well dispersed in the amorphous phase of PEAA20. WAXD revealed that the crystallinity of PEAA20 is reduced and the crystallites are deformed by the addition of AEAF. The storage modulus and dynamic glass transition temperature of the polymer increase upon the incorporation of AEAF. Unlike C-60 and a monofunctional C-60 derivative, AEAF is able to sustain its reinforcing effect in the glass-rubber transition region.