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Caracterização do Porongo (Lagenaria siceraria): análise termogravimétrica,determinação do teor de umidade, da densidade básica e da densidade aparente

Authors: Nejeliski, Danieli Maehler; Duarte, Lauren da Cunha;

Caracterização do Porongo (Lagenaria siceraria): análise termogravimétrica,determinação do teor de umidade, da densidade básica e da densidade aparente

Abstract

O porongo (Lagenaria siceraria) é um fruto que após a secagem torna-se oco e similar à madeira. Disseminou-se por todos os continentes e é utilizado por diferentes povos na confecção artesanal de recipientes, instrumentos musicais e boias. Com ciclo produtivo anual e alta produtividade, configura-se em alternativa de fonte renovável. Sua utilização no design de novos produtos depende da definição das principais propriedades. A caracterização foi feita através de análise termogravimétrica, determinação do teor de umidade, da densidade básica e aparente e ensaio de absorção de água. Nos gráficos termogravimétricos, o comportamento similar do porongo e da madeira à exposição ao calor confirma que a composição química de ambos tem muitos aspectos em comum. Possui densidade heterogênea, muito baixa, em média 0,124 g/cm³, similar às espumas poliméricas. Quanto à absorção de água, as amostras tiveram aumento de massa de cerca de 150% até a saturação, configurando-se como um material hidrofílico.

Keywords

Drawing. Design. Illustration, Lagenaria siceraria, NC1-1940, Análise termogravimétrica, Novos produtos : Desenvolvimento, lagenaria siceraria, Porongo, Density, Thermogravimetric analysis, análise termogravimétrica, densidade

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
2
Average
Average
Average
Green
gold