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Authors
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Zhang, H. ; Jakisch, L. ; Komber, H. ; Häußler, L. ; Voit, B. ; Böhme, F.
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Title
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Novel graft copolymers with aliphatic polyether and polyester main chains
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Date
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19.11.2015
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Number
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47384
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Abstract
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A series of new graft copolymers was synthesized by a “grafting to” approach, in the course of which the polymer backbone was build up first by a chain extension reaction of polyether or polycaprolactone diols with bis-N-acyl lactams. During the first reaction step, benzoxazinone groups were introduced into the backbone which served as grafting sites for monoamino-terminated polyamide 12 or polystyrene. Chain extension and grafting could be performed successively and with high selectivity in the melt at 180–220 °C.<br />The morphology and the thermo-mechanical behavior of the graft copolymers were strongly influenced by the type of the grafted side chains. Polymers with polyamide grafts exhibited a two phase morphology with a spherulitic superstructure in the micrometer scale. The tensile behavior of these polymers was characterized by a certain elastic component.<br />In contrast, the phase morphology of a polystyrene grafted polymer was much finer. A strong influence on the glass transitions revealed improved compatibility between the components. Pronounced strain hardening was observed during the tensile test of polystyrene grafted samples.
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Publisher
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Polymer
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Wikidata
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Citation
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Polymer 79 (2015) 232-242
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DOI
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https://doi.org/10.1016/j.polymer.2015.10.023
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Tags
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graft copolymers coupling reactions aliphatic polyether
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