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Pseudo interpenetrating polymer networks were prepared by a sequential method using a high molecular weight natural rubber and poly(methyl methacrylate), PMMA. The thermal properties and morphology were investigated varying the average molar mass between crosslinks (M̄ c ) and the composition. The extent of crosslinking of natural rubber plays a major role in the transitions domains whatever the sample composition. As the crosslink density decreases, only one T g value is observed (M̄ c of 500 and 1000 g/mol). Comparison between the pseudo IPNs at different M̄ c values and compositions indicates that there are no significant differences in the thermal stabilities of the materials. Crosslinking and the component composition had a strong effect on the morphological patterns of the samples. For a higher crosslink density (M̄ c ¼ 142 g/mol), close and compact phase domains can be seen. The morphologies for lower crosslink densities (M̄ c of 500 and 1000 g/mol) showed fibrillar domains characteristic of the PMMA.

Посилання на статтю:

Morphology and thermal properties of pseudo interpenetrating polymer networks based on natural rubber (Manihot glaziovii) and poly(methyl methacrylate) / Robério Marcos Alcântara, Ana Paula Pinho Rodrigues, Glaucione Gomes de Barros // Polymer. – 1999. – N 40. – P. 1651–1656.

Morphology and thermal properties of pseudo interpenetrating polymer networks based on natural rubber (Manihot glaziovii) and poly(methyl methacrylate) - Завантажити.