Novel biodegradable composites based on PHBV: Effect of nanocellulose incorporation on the non-isothermal crystallization kinetic and structural parameters

Autor(es)

Benini, Kelly C. C. C. ^[1] ; Ornaghi Junior, Heitor L. ^[2] ; Bianchi, Otavio ^[2] ; de Magalhaes, Welington Ferreira ^[3] ; Henriques, Fernando Fulgencio ^[3] ; Windmoller, Dario ^[3] ; Voorwald, Herman J. C. ^[1] ; Cioffi, Maria O. H. ^[1]

Afiliação do(s) autor(es)

^[1] UNESP Sao Paulo State Univ, Dept Mat & Technol, Fatigue & Aeronaut Mat Res Grp, BR-12516410 Guaratingueta, SP - Brazil

^[2] UCS, Mat Sci & Engn Grad Program PGMAT, BR-95070490 Caxias Do Sul, RS - Brazil

^[3] Univ Fed Minas Gerais, Positron Annhilat Spect Lab LEAP, BR-31270901 Belo Horizonte, MG - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Polymer Composites; v. 40, n. 8, p. 3156-3165, AUG 2019.
• Citações Web of Science: 2

Resumo

This study presents the non-isothermal behavior of poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) biodegradable films with 1-5 wt% of cellulose nanoparticles (CNs) manufactured by solution casting using N,N-dimethylformide and chloroform as the solvents. X-ray diffraction and scanning electron microscopy with field emission gun were performed for CNs in order to determine its morphology and crystalline properties. The effect of non-isothermal crystallization of PHBV and its nanocomposites was studied using differential scanning calorimetry technique. The incorporation of CNs increases the crystallization rate with up to 3 wt%. Structural parameters were studied using positron annihilation lifetime spectroscopy and small-angle X-ray scattering. The free volume does not change upon CNs addition in spite of form less perfect crystals and increase the lamellar thickness. POLYM. COMPOS., 40:3156-3165, 2019. (c) 2018 Society of Plastics Engineers (AU)

• Processo FAPESP: 11/14153-8 - Compósitos de nanocelulose/PHBV: manta microfibrílica por eletrofiação
• Beneficiário: Kelly Cristina Coelho de Carvalho Benini
• Modalidade de apoio: Bolsas no Brasil - Doutorado