DataVXPolymer CompositesPaper
journal article·2019-08

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

Kelly C.C.C. Benini, Heitor L. Ornaghi Júnior, Otavio Bianchi, Welington Ferreira de Magalhães, Fernando Fulgêncio Henriques, Dario Windmoller, Herman J.C. Voorwald, Maria O.H. Cioffi

Polymer Composites· Volume 40· Issue 8
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Source abstract

Abstract

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. © 2018 Society of Plastics Engineers
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Research context

NanomaterialsComposites

OpenAlex topics: biodegradable polymer synthesis and properties · Advanced Cellulose Research Studies · Natural Fiber Reinforced Composites

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Fatigue and Aeronautical Materials Research Group, Department of Materials and Technology UNESP ‐ São Paulo State University, 12516‐410 Guaratinguetá São Paulo Brazil

Materials Science and Engineering Graduate Program (PGMAT) University of Caxias do Sul (UCS) 95070‐490 Caxias do Sul Rio Grande do Sul Brazil

Positron Annhilation Spectroscopy Laboratory (LEAP) Federal University of Minas Gerais (UFMG) 31270‐901 Belo Horizonte Minas Gerais Brazil

Funding

Conselho Nacional de Desenvolvimento Científico e Tecnológico · Coordenação de Aperfeiçoamento de Pessoal de Nível Superior · Fundação de Amparo à Pesquisa do Estado de São Paulo

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