Polyhydroxyalkanoates and Their Nanobiocomposites With Cellulose Nanocrystals

dc.contributor.authorDe Carvalho, Kelly C. Coelho [UNESP]
dc.contributor.authorMontoro, Sérgio Roberto [UNESP]
dc.contributor.authorCioffi, Maria Odila Hilário [UNESP]
dc.contributor.authorVoorwald, Herman Jacobus Cornelis [UNESP]
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionCentro Estadual de Educação Tecnológica 'Paula Souza' (CEETEPS)
dc.date.accessioned2018-12-11T17:28:15Z
dc.date.available2018-12-11T17:28:15Z
dc.date.issued2015-09-23
dc.description.abstractCellulose nanocrystals produced from different natural sources, are emerging renewable nanomaterials that can be applied in many different ways due to their properties of high strength and stiffness, combined with low weight, biodegradability and the environmental benefits arising from its use. Due to their nanoscale and specific intrinsic properties, cellulose nanocrystals are very promising for use as reinforcement in high-performance nanocomposites with sustainable appeal. Many biodegradable polymers are used as a matrix in the manufacture of these nanocomposites, among them the poly(3-hydroxybutirate) and its copolymer poly(3-hydroxybutirate-co-3-hydroxy valerate) (PHBV). These polymers are characterized as polyhydroxyalkanoates (PHA) class and are unique considering they can be produced on a large scale. PHA family polymers are natural polyesters, basically composed of carbon, hydrogen and oxygen atoms and synthesized from the fermentation of at least 75 different species of bacteria. PHBV has been studied for different applications as a matrix of nanocomposites due to its biodegradability and biocompatibility characteristics; however, it presents some disadvantages, such as high cost, low thermal stability, brittleness and low crystallization rate, which hinders its use in many applications. In addition, the nanocrystalline cellulose reinforcement has the main objective of acting as a nucleating agent increasing the polymer crystallization rate, and also of providing increased mechanical properties, such as tensile strength, Young's modulus and storage modulus. In this context, this chapter describes recent progress evidenced in the literature that deals with cellulose nanocrystal obtention, its use as a reinforcement of PHBV and, the use of its biodegradable nanocomposites in different applications.en
dc.description.affiliationFatigue and Aeronautic Materials Research Group Materials and Technology Department UNESP-Universidade Estadual Paulista
dc.description.affiliationChemical Engineering Department Engineering School of Lorena University of São Paulo
dc.description.affiliationCentro Estadual de Educação Tecnológica 'Paula Souza' (CEETEPS)
dc.description.affiliationUnespFatigue and Aeronautic Materials Research Group Materials and Technology Department UNESP-Universidade Estadual Paulista
dc.format.extent261-285
dc.identifierhttp://dx.doi.org/10.1016/B978-0-323-39408-6.00012-1
dc.identifier.citationDesign and Applications of Nanostructured Polymer Blends and Nanocomposite Systems, p. 261-285.
dc.identifier.doi10.1016/B978-0-323-39408-6.00012-1
dc.identifier.lattes6119671014416126
dc.identifier.scopus2-s2.0-84966773936
dc.identifier.urihttp://hdl.handle.net/11449/178017
dc.language.isoeng
dc.relation.ispartofDesign and Applications of Nanostructured Polymer Blends and Nanocomposite Systems
dc.rights.accessRightsAcesso restrito
dc.sourceScopus
dc.subjectBiodegradable polymers
dc.subjectCellulose
dc.subjectLignocellulosic fibers
dc.subjectNanocomposites
dc.subjectNanocrystals
dc.titlePolyhydroxyalkanoates and Their Nanobiocomposites With Cellulose Nanocrystalsen
dc.typeCapítulo de livro
unesp.author.lattes6119671014416126
unesp.departmentMateriais e Tecnologia - FEGpt

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