Development of modified polypropylene with polyfunctional monomers by gamma irradiation
Carregando...
Data
Data de publicação
2006
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
É parte de
INTERNATIONAL SYMPOSIUM ON MACROMOLECULES, 41st
Exportar
Resumo
One of the effective approaches to achieve high melt strength polymers (HMS) is to add chain branches onto backbone
species using gamma radiation. Branching and grafting result from macroradicals combinations during the irradiation
process. Nonetheless, crosslinking and main chain scission in the polymer structure are also obtained. Gamma
irradiation technique was used to induce chemical changes in commercial polypropylene with two different monomers:
ethyleneglycol dimethacrylate (EGDMA) and Tri-methylol-propane-trimethacrylate (TMPTMA) with concentration of
5.0 mmol/100g of polypropylene. These samples were irradiated with a 60Co source at doses of 12,5 and 20kGy and two
different routes of HMS-PP processing have been used . In this work we investigate how different methods of mixture
can modify HMS-PP samples properties . Indeed the results from melt flow, gel fraction and rheology reveal that
HMS-PP properties can be considerably influenced by mixture temperature of virgin PP with monomer.
Como referenciar
YOSHIGA, ADRIANA; OTAGURO, HARUMI; LIMA, LUIS F.C.P.; BUENO, JEFERSON R.; PARRA, DUCLERC F.; ARTEL, BEATRIZ W.H.; LUGAO, ADEMAR B. Development of modified polypropylene with polyfunctional monomers by gamma irradiation. In: INTERNATIONAL SYMPOSIUM ON MACROMOLECULES, 41st, July 16-21, 2006, Rio de Janeiro, RJ. Proceedings... Disponível em: http://repositorio.ipen.br/handle/123456789/15658. Acesso em: 27 Mar 2026.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.