SciELO - Scientific Electronic Library Online

 
vol.16 número1Preparação de argilas organofílicas e desenvolvimento de nanocompósitos com matrizes poliméricas de polietileno e nylon6. Parte 1: comportamento mecânicoPolibutadieno alto-cis: estudo viscosimétrico em tolueno e ciclo-hexano índice de autoresíndice de assuntospesquisa de artigos
Home Pagelista alfabética de periódicos  

Serviços Personalizados

Journal

Artigo

Indicadores

Links relacionados

Compartilhar


Polímeros

versão impressa ISSN 0104-1428versão On-line ISSN 1678-5169

Resumo

SCURACCHIO, Carlos H.; WAKI, Daniel A.  e  BRETAS, Rosario E. S.. Thermal and rheological characterization of ground tire rubber devulcanized by microwaves. Polímeros [online]. 2006, vol.16, n.1, pp.46-52. ISSN 0104-1428.  https://doi.org/10.1590/S0104-14282006000100011.

Ground tire rubber was submitted to a microwaves treatment in order to promote its devulcanization, that is, the breaking of the crosslinks between the chains. The influence of the processing parameters, such as time of exposure to the microwaves and number of treatment steps, was investigated. After the treatment, the material was characterized in terms of its thermal, by DSC, dynamic-mechanical, by DMA and rheological, by capillary rheometry, properties. In addition, the extraction of soluble fractions was made in soxhlet, to evaluate the amount of rubber that effectively was devulcanized during the microwaves treatment. The devulcanization treatment showed to be a viable method to produce a material which can be molded, in a similar way to virgin rubber. However, the complete devulcanization of the material was not possible in any devulcanization condition used. The thermal analysis showed that significant changes in the chemical structure were induced when the material was exposed to the microwaves for long times.

Palavras-chave : Rubber recycling; devulcanization; microwaves; ground tire rubber; GTR.

        · resumo em Português     · texto em Português     · Português ( pdf )

 

Creative Commons License Todo o conteúdo deste periódico, exceto onde está identificado, está licenciado sob uma Licença Creative Commons