Dynamic Mechanical Properties and Morphology of Poly(benzyl methacrylate)/Epoxy Thermoset Blends

作者：Prolongo Margarita G^*; Arribas Carmen; Salom Catalina; Masegosa Rosa M

来源：Polymer Engineering and Science, 2010, 50(9): 1820-1830.

DOI：10.1002/pen.21707

Poly(benzyl methacrylate) (PBzMA)/epoxy thermoset blends of composition 5 to 25 wt% of PBzMA were prepared curing with 4,4'diaminodiphenylmethane (DDM), to study the influence of composition on the morphology and dynamic-mechanical properties of the blends. The cured blends are phase separated in PBzMA-rich phase and epoxy rich-phase. As the PBzMA content increases, the morphology evolves from nodular, to combined and to totally inverted. The analysis of the alpha-mechanical relaxations indicates that the glass transition temperatures (T(g)) of PBzMA and of epoxy in the blends are different from the neat polymers, this is related to a noncomplete phase separation on curing. The profiles of the loss modulus-temperature curves are correlated with the change in morphology that appears increasing the PBzMA content. The storage modulus-temperature curves are highly dependent on the morphology of the samples. The storage modulus-composition dependence is predicted using several models for two phase composites. POLYM. ENG. SCI., 50:1820-1830, 2010.

• 出版日期2010-9