Evaluation of lignin as stabilizer in vulcanized natural rubber formulations
Gelsa Adriana Carpenedo, Nayrim Brizuela Guerra, Marcelo Giovanela, Marco Aurelio De Paoli, Janaina da Silva Crespo
ARTIGO
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Agradecimentos: The authors would like to thank the Vipal Borrachas S.A. Company and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (PROSUC funding) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for their technical and financial support. Marco Aurelio De Paoli...
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Agradecimentos: The authors would like to thank the Vipal Borrachas S.A. Company and Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (PROSUC funding) and Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) for their technical and financial support. Marco Aurelio De Paoli acknowledges a senior researcher fellowship from CNPq (Process Nr. 301933/2015-4)
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Abstract: In this study we evaluated the use of eucalyptus lignin as a stabilizer in combination with other stabilizers in a vulcanized elastomeric based on natural rubber. The stabilizers tested were 6PPD (N-1,3-dimethyl-butyl-N'-phenyl-p-phenylenediamine), TMQ (oligomerized...
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Abstract: In this study we evaluated the use of eucalyptus lignin as a stabilizer in combination with other stabilizers in a vulcanized elastomeric based on natural rubber. The stabilizers tested were 6PPD (N-1,3-dimethyl-butyl-N'-phenyl-p-phenylenediamine), TMQ (oligomerized 2,2,4-trimethylquinoline), paraffin wax and eucalyptus lignin. At predetermined time intervals, samples were taken from aging conditions and the mechanical properties and additive content were determined. The sample with a combination of wax and lignin in the same formulation showed the greatest resistance to oxidative degradation. In samples with only one stabilizer, the migration test indicated greater diffusion of lignin to the surface. Samples exposed to thermo-oxidative aging showed greater loss in the mechanical properties of tear strength and 6PPD consumption. In the accelerated aging with ozone, all showed a behavior more resistant to aging. We concluded that lignin can be used as a substitute for synthetic stabilizers, without impairing the performance of natural rubber compounds
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CONSELHO NACIONAL DE DESENVOLVIMENTO CIENTÍFICO E TECNOLÓGICO - CNPQ
301933/2015-4
Aberto
Evaluation of lignin as stabilizer in vulcanized natural rubber formulations
Gelsa Adriana Carpenedo, Nayrim Brizuela Guerra, Marcelo Giovanela, Marco Aurelio De Paoli, Janaina da Silva Crespo
Evaluation of lignin as stabilizer in vulcanized natural rubber formulations
Gelsa Adriana Carpenedo, Nayrim Brizuela Guerra, Marcelo Giovanela, Marco Aurelio De Paoli, Janaina da Silva Crespo
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