A preliminary assessment on the preparation of spirulina/PE blends by compression molding

• Autorzy: Díaz Sara , Romero Francisco , Suárez Luis , Ortega Zaida

Identyfikatory

DOI

10.62753/ctp.2024.05.4.4

• Języki publikacji: EN

Abstrakty

EN

Substituting petrochemical plastics with biobased plastics from natural feedstock offers an environmentally friendly alternative to reduce the carbon footprint. Proteins are promising biopolymers that can be transformed into plastics and sourced from various types of biomass, such as microalgae. Microalgae, particularly spirulina, is considered an excellent renewable resource for bioplastic production due to its high protein content. This study focuses on the characterization of spirulina-polyethylene (PE) composites molded by compression molding technology. Both washed (for salt removal), and unwashed biomass were used in order to explore a potentially more sustainable and cost-effective option. Various loadings of both biomass types (5 % - 30 % by weight) were investigated, and the mechanical (tensile, flexural, and impact resistance) as well as thermal properties (thermogravimetric analysis and differential scanning calorimetry) of the resulting composites were determined. The mechanical properties remained nearly unchanged compared to neat PE when the biomass content was kept under 10 wt.% for both the washed and unwashed biomass. At higher biomass loadings, a reduction in mechanical per formance was observed; however, the molded parts maintained good aesthetics and acceptable properties. Despite the pre dictable adverse changes in thermal behavior, the processability of the materials was not affected. Differential scanning calorimetry indicated that total plasticization of the biomass protein was not achieved during the molding process. Additional ly, no significant differences were found between the washed and unwashed biomass, suggesting that using unwashed biomass could be more economically and environmentally beneficial.

Słowa kluczowe

EN

compression molding; microalgae; plasticization; spirulina; mechanical properties; biocomposite

PL

formowanie kompresyjne; mikroalgi; plastyfikacja; spirulina; właściwości mechaniczne; biokompozyt

• Wydawca: Polskie Towarzystwo Materiałów Kompozytowych
• Czasopismo: Composites Theory and Practice
• Rocznik: 2024
• Tom: R. 24, nr 4
• Strony: 238--245
• Opis fizyczny: Bibliogr. 24 poz., rys., tab.

Twórcy

autor

Díaz Sara

• Universidad de Las Palmas de Gran Canaria, Departamento de Ingeniería de Procesos, Edificio de Ingenierías, Campus universitario de Tafira Baja, 35017, Las Palmas de Gran Canaria, Spain

autor

Romero Francisco

• Universidad de Las Palmas de Gran Canaria, Departamento de Ingeniería de Procesos, Edificio de Ingenierías, Campus universitario de Tafira Baja, 35017, Las Palmas de Gran Canaria, Spain

autor

Suárez Luis

• Universidad de Las Palmas de Gran Canaria, Departamento de Ingeniería Mecánica, Edificio de Ingenierías, Campus universitario de Tafira Baja, 35017, Las Palmas de Gran Canaria, Spain

autor

Ortega Zaida

• Universidad de Las Palmas de Gran Canaria, Departamento de Ingeniería de Procesos, Edificio de Ingenierías, Campus universitario de Tafira Baja, 35017, Las Palmas de Gran Canaria, Spain

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa nr POPUL/SP/0154/2024/02 w ramach programu "Społeczna odpowiedzialność nauki II" - moduł: Popularyzacja nauki (2025).