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Abstract(s)
A sustentabilidade visa o desenvolvimento de novas estratégias e produtos que atuem no ambiente ecológico, social e económico assegurando a longevidade das empresas e da sociedade. Neste contexto, em parceria com a empresa Amorim Cork, foi avaliado o potencial de produtos à base de ceras e óleos de origem biológica e renovável, como alternativas aos produtos de base petroquímica (parafinas e silicones), atualmente utilizados no tratamento de superfície das rolhas. Com este objetivo, foram realizados testes em rolhas de cortiça naturais e microaglomeradas Neutrocork® durante o 1º e 2º semestres de 2020/21. Utilizaram-se os métodos de tentativa e erro e desenho fatorial para otimizar as formulações, sendo a validação dos produtos efetuada segundo o protocolo interno de validação de novos tratamentos de superfície. Os resultados mostraram que a associação das emulsões de ceras A1 e A2 têm potencialidade para serem utilizados nos tratamentos de superfície, mas têm que ser complementados com um elastómero de silicone devido a problemas visuais e forças de extração elevadas. Na aplicação desta solução foi detetado um problema associado à adesão do elastómero, tendo sido demonstrado que a humidade do sistema durante a aplicação do tratamento de superfície é um dos fatores que afeta significativamente essa adesão. Em tratamentos de rolhas de cortiça naturais, recorreu-se a um desenho fatorial completo 2 3 como ferramenta de avaliação da influência de alterações na formulação do produto B2 (mistura de ceras e óleos naturais) na força de extração das rolhas. Os resultados mostraram que a razão mássica entre os óleos que integram a composição de B2 é o fator que mais influência as forças de extração. Demonstrou-se que os produtos C3 e C5, derivados de ceras e óleos naturais, têm potencial para serem utilizados no tratamento de superfície de rolhas de cortiça naturais. A aplicação do produto D8, derivado de óleos vegetais, em rolhas microaglomeradas Neutrocork® mostrou ser promissora, mas esta teve de ser complementada com um elastómero de silicone para se atingir o desempenho pretendido. De um total de 23 produtos testados, 7 demonstraram potencial como alternativas aos produtos atualmente utilizados. Este trabalho serviu como contributo para o desenvolvimento de tratamentos de superfície mais sustentáveis que os tratamentos de referência atuais.
Sustainability aims to develop new strategies and products acting in the ecological, social, and economic environment, ensuring the longevity of companies and society. In this context, in cooperation with the company Amorim Cork, the potential of wax and oil-based products from biological and renewable sources was evaluated, as an alternative to petrochemical-based products (paraffins and silicones) that are currently used in the surface treatment of cork stoppers. With this goal, tests with natural and Neutrocork® microagglomerated cork stoppers were performed during the 1st and 2nd semesters of 2020/21. Trial and error and factorial design methods were used to optimize the formulations, and the validation of the products was conducted according to the internal validation protocol for new surface treatments. The results showed that the combination of A1 and A2 wax emulsions have the potential to be used in surface treatments, but they must be complemented with the use of a silicone elastomer due to visual problems and high extraction forces. Applying this solution, a problem associated with the adhesion of the elastomer was detected, and it was demonstrated that the humidity of the system during the application of the surface treatment is one of the factors that significantly impacts this adhesion. In natural cork stoppers treatments, a 23 factorial design was used as a tool to assess the influence of changes in the formulation of product B2 on the stoppers’ extraction forces. The results showed that the mass ratio between the oils that compose B2 is the factor that most influences extraction forces. It was showed that C3 and C5 products, derived from wax and natural oils, have the potential to be used in the surface treatment of natural cork stoppers. The application of product D8 in Neutrocork® microagglomerated cork stoppers proved to be promising, but it had to be complemented with a silicone elastomer to achieve the desired performance. Of a total of 23 tested products, 7 showed potential as alternatives to the products currently used. This work served as a contribution to the development of surface treatments that are more sustainable than the current reference treatments.
Sustainability aims to develop new strategies and products acting in the ecological, social, and economic environment, ensuring the longevity of companies and society. In this context, in cooperation with the company Amorim Cork, the potential of wax and oil-based products from biological and renewable sources was evaluated, as an alternative to petrochemical-based products (paraffins and silicones) that are currently used in the surface treatment of cork stoppers. With this goal, tests with natural and Neutrocork® microagglomerated cork stoppers were performed during the 1st and 2nd semesters of 2020/21. Trial and error and factorial design methods were used to optimize the formulations, and the validation of the products was conducted according to the internal validation protocol for new surface treatments. The results showed that the combination of A1 and A2 wax emulsions have the potential to be used in surface treatments, but they must be complemented with the use of a silicone elastomer due to visual problems and high extraction forces. Applying this solution, a problem associated with the adhesion of the elastomer was detected, and it was demonstrated that the humidity of the system during the application of the surface treatment is one of the factors that significantly impacts this adhesion. In natural cork stoppers treatments, a 23 factorial design was used as a tool to assess the influence of changes in the formulation of product B2 on the stoppers’ extraction forces. The results showed that the mass ratio between the oils that compose B2 is the factor that most influences extraction forces. It was showed that C3 and C5 products, derived from wax and natural oils, have the potential to be used in the surface treatment of natural cork stoppers. The application of product D8 in Neutrocork® microagglomerated cork stoppers proved to be promising, but it had to be complemented with a silicone elastomer to achieve the desired performance. Of a total of 23 tested products, 7 showed potential as alternatives to the products currently used. This work served as a contribution to the development of surface treatments that are more sustainable than the current reference treatments.
Description
Keywords
Rolha de cortiça Tratamentos de superfície Parafinas Silicones Produtos de base biológica Óleos vegetais Ceras naturais Forças de extração Cork stoppers Surface treatments Paraffins Biobased products Vegetable oils Natural waxes Extraction forces