skip to main content
Idioma:

Effects of tributyrin as plasticizer in poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) on processability, mechanical, and thermal properties

Carvalho, Nathan K. ; Silva, Ana P. B. ; Lemes, Ana P.

Journal of applied polymer science, 2023-08, Vol.140 (32), p.n/a [Periódico revisado por pares]

Hoboken, USA: John Wiley & Sons, Inc

Texto completo disponível

Citações Citado por
  • Título:
    Effects of tributyrin as plasticizer in poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) on processability, mechanical, and thermal properties
  • Autor: Carvalho, Nathan K. ; Silva, Ana P. B. ; Lemes, Ana P.
  • Assuntos: Additives ; biodegradable polymers ; Elongation ; Exudation ; Glass transition temperature ; Materials science ; Mechanical tests ; Melt temperature ; Plastic deformation ; plasticizer ; Plasticizers ; poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) ; Polymers ; Tensile strength ; Thermal analysis ; Thermodynamic properties ; tributyrin
  • É parte de: Journal of applied polymer science, 2023-08, Vol.140 (32), p.n/a
  • Descrição: The development of biodegradable polymers has been stimulated owing to the inappropriate litter disposing in order to replace conventional polymers with long‐time degradation. As their performance is a challenge to this replacement, the insertion of additives in biodegradable polymers such as poly(3‐hydroxybutyrate‐co‐3‐hydroxyvalerate) (PHBV) consists in an effective way of adjusting their properties. For this reason, it was analyzed the incorporation of tributyrin (TB) in the matrix of PHBV as a plasticizer, so that higher plastic deformation is achieved. Samples of neat PHBV and with plasticizer concentrations of 5, 10, and 15 wt% were prepared by double screw extruder followed by press molding under temperature. Plasticizer exudation test confirmed the presence of TB in the samples of PHBV. Mechanical test showed the highest value of tensile strength and elongation at break for PHBV/5TB, with 23.4 MPa and 2.84%, respectively. It was observed at differential scanning calorimetry and dynamic mechanical thermal analysis that the PHBV/5TB resulted in an increase of 3% on crystallinity, a decrease of 3% on melting temperature, and a decrease of 46% and 29% on glass transition temperature by E″ and tan δ curves, respectively, compared with neat PHBV. Thus, PHBV/5TB was determined as the most appropriate composition for enhancing processability and properties of PHBV. It shows a scheme including the structural formula of PHBV and TB, the preparation of the films and some results of their performance.
  • Editor: Hoboken, USA: John Wiley & Sons, Inc
  • Idioma: Inglês
Voltar para lista de resultados

  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

Buscando em bases de dados remotas. Favor aguardar.