Dynamic mechanical properties and morphology of poly(benzyl methacrylate)/epoxy thermoset blends
| Autor: | Carmen Arribas Arribas, R. M. Masegosa, C. Salom, Margarita González Prolongo |
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| Rok vydání: | 2010 |
| Předmět: |
chemistry.chemical_classification
Benzyl methacrylate Materials science Polymers and Plastics Thermosetting polymer General Chemistry Epoxy Polymer chemistry visual_art Phase (matter) Materials Chemistry visual_art.visual_art_medium Polymer blend Composite material Glass transition Curing (chemistry) |
| Zdroj: | Polymer Engineering & Science. 50:1820-1830 |
| ISSN: | 0032-3888 |
| DOI: | 10.1002/pen.21707 |
| Popis: | 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 α-mechanical relaxations indicates that the glass transition temperatures (Tg) 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. © 2010 Society of Plastics Engineers |
| Databáze: | OpenAIRE |
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