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Registro Completo |
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Biblioteca(s): |
Embrapa Instrumentação. |
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Data corrente: |
22/12/1999 |
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Data da última atualização: |
22/12/1999 |
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Autoria: |
MATTOSO, L. H. C.; MALMONGE, L. F. |
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Afiliação: |
EMBRAPA-CNPDIA; USP-IQSC. |
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Título: |
Influence of the dopant on the spherulitic to fibrilar morphological transition of polyaniline blends. |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
In: INTERNATIONAL CONFERENCE ON SCIENCE AND TECHNOLOGY OF SYNTHETIC METALS, July-Aug. 1996, Snowbird, UT, Estados Unidos. Abstracts... Snowbird: Utah University, 1996. |
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Páginas: |
p.377. |
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Idioma: |
Inglês |
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Notas: |
Ref.P3.164. |
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Conteúdo: |
Blends of poly(o-methoxyaniline)-POMA and poly(vinylidene fluoride)-PVDF exhibiting extremely low percolation threshold and great mechanical strength were prepared by casting readily in the conductive state at various compositions. The morphology of these blends depend on the dopant nature and doping state, as observed by scanning electron microscopy. For undoped of TFA doped blends the spherulitic morphology, peculiar of pure PVDF, was predominately preserved for contents as high as 25% of POMA in the blend. However, blends doped with TSA presented a transition in morphology from spherulites to fibrils (characteristic of polyanilines), for increasing POMA content. Also, blends with TSA presented better conductivity and thermal stability. The conductivity of such blends remained practically unchanged in the range of 10E-3 to 10E-4 S/cm for long periods (500h), after treatment at temperatures of 70and 90 Celsius degrees. Thermal analysis demonstrated that no mass loss was observed up to temperatures as high as the melting point of PVDF. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01631naa a2200157 a 4500
001 1027107
005 1999-12-22
008 1996 bl uuuu u00u1 u #d
100 1 $aMATTOSO, L. H. C.
245 $aInfluence of the dopant on the spherulitic to fibrilar morphological transition of polyaniline blends.
260 $c1996
300 $ap.377.
500 $aRef.P3.164.
520 $aBlends of poly(o-methoxyaniline)-POMA and poly(vinylidene fluoride)-PVDF exhibiting extremely low percolation threshold and great mechanical strength were prepared by casting readily in the conductive state at various compositions. The morphology of these blends depend on the dopant nature and doping state, as observed by scanning electron microscopy. For undoped of TFA doped blends the spherulitic morphology, peculiar of pure PVDF, was predominately preserved for contents as high as 25% of POMA in the blend. However, blends doped with TSA presented a transition in morphology from spherulites to fibrils (characteristic of polyanilines), for increasing POMA content. Also, blends with TSA presented better conductivity and thermal stability. The conductivity of such blends remained practically unchanged in the range of 10E-3 to 10E-4 S/cm for long periods (500h), after treatment at temperatures of 70and 90 Celsius degrees. Thermal analysis demonstrated that no mass loss was observed up to temperatures as high as the melting point of PVDF.
700 1 $aMALMONGE, L. F.
773 $tIn: INTERNATIONAL CONFERENCE ON SCIENCE AND TECHNOLOGY OF SYNTHETIC METALS, July-Aug. 1996, Snowbird, UT, Estados Unidos. Abstracts... Snowbird: Utah University, 1996.
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Registro original: |
Embrapa Instrumentação (CNPDIA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Agrobiologia. |
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Data corrente: |
10/10/2006 |
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Data da última atualização: |
10/10/2006 |
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Autoria: |
DIAS, A.; RUMJANEK, N. G.; XAVIER, G. R.; NEVES, M. C. P.; RIBEIRO, R. de L. D.; BOTELHO, G. R. |
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Título: |
Promoção de crescimento em bertalha (Basella alba) pela atividade de Pseudomonas spp. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
In: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 30., 2005, Recife. Solos: sustentabilidade e qualidade ambiental. Recife: Sociedade Brasileira de Ciência do Solo, 2005. |
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Páginas: |
4 p. |
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Descrição Física: |
CD ROM. |
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Idioma: |
Português |
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Palavras-Chave: |
Bertalha; Congresso. |
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Thesagro: |
Basella Alba; Crescimento. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00756naa a2200229 a 4500
001 1628917
005 2006-10-10
008 2005 bl uuuu u00u1 u #d
100 1 $aDIAS, A.
245 $aPromoção de crescimento em bertalha (Basella alba) pela atividade de Pseudomonas spp.
260 $c2005
300 $a4 p.$cCD ROM.
650 $aBasella Alba
650 $aCrescimento
653 $aBertalha
653 $aCongresso
700 1 $aRUMJANEK, N. G.
700 1 $aXAVIER, G. R.
700 1 $aNEVES, M. C. P.
700 1 $aRIBEIRO, R. de L. D.
700 1 $aBOTELHO, G. R.
773 $tIn: CONGRESSO BRASILEIRO DE CIÊNCIA DO SOLO, 30., 2005, Recife. Solos: sustentabilidade e qualidade ambiental. Recife: Sociedade Brasileira de Ciência do Solo, 2005.
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Embrapa Agrobiologia (CNPAB) |
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