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Nova tinta à base de água salgada pode revolucionar a sustentabilidade da impressão 3D - Know More. Create More.


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Nova tinta à base de água salgada pode revolucionar a sustentabilidade da impressão 3D

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A impressão 3D tem impulsionado demais as criações de engenharia, permitindo a construção de objetos tridimensionais de forma bem mais rápida, eficiente e ecológica.

Neste artigo do Engenharia 360, queremos destacar a pesquisa conduzida por uma equipe da Universidade da Califórnia, em São Diego. Ela desenvolveu uma nova técnica para solidificação de tinta a partir de água salgada. Continue lendo para saber mais!

A nova revolução da impressão 3D

Os cientistas desenvolveram uma tinta inovadora chamada poli(N-isopropilacrilamida), ou PNIPAM. Sua receita é teoricamente simples, usando água salgada para solidificar materiais sem a necessidade de produtos tóxicos e processos complexos. Tal feito pode melhorar a tecnologia de impressão 3D, tornando-a mais sustentável e alinhada com as necessidades globais de redução de impacto ambiental.

Para criar essa tinta, os desenvolvedores utilizaram um polímero líquido especial. O mesmo foi conduzido através de uma agulha em uma solução salina de cloreto de cálcio. Ao entrar em contato com os íons de sal, sofreu transformação instantânea, retirando as moléculas de água da solução de polímero, causando a agregação das cadeias poliméricas hidrofóbicas e formando uma estrutura sólida.

Em outras palavras, suas cadeias se entrelaçaram, formando uma estrutura bastante sólida. Esse fenômeno é conhecido como “salting-out”.

 

 

 

Fonte: Engenharia 360 10.08.2024

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