Novel polymer nanocomposites from bioinspired green aqueous functionalization of BNNTs

Effect of silane coupling agent on the morphology, structure, and properties of poly(vinylidene fluoride–trifluoroethylene)/BaTiO3 composites

“…Clay modified by alkyl functionalized ionic liquids (ILs) formed intercalated structures in PVDF nanocomposites, while functionalization with fluorinated ILs led to exfoliated structures, greatly enhancing the strain at break [28]. Boron nitride nanotubes (BNNT) surface modified with dopamine allowed obtaining a higher increase of the elastic modulus and yield strength of PVDF composites with respect to pristine BNNT [29]. Surface functionalization of CaCO 3 with a fluorinated alkoxysilane led to PVDF nanocomposites with enhanced filler dispersion, better thermal stability and improved gas barrier [30], while a commercial organo-silane coated ZnO only slightly increased the storage modulus of a P(VDFTrFE) based nanocomposite versus uncoated ZnO, with no influence on the dispersion state of the filler or on the crystallinity of the matrix [31].…”

Cellulose Acetate Nanocomposites with Antimicrobial Properties

“…2009Singha et al 2009;. Among the various pretreatment techniques, silylation, mercerization, peroxide benzoylation, graft copolymerization, and bacterial cellulose treatment represent optimum methods for surface modification of natural fibers (Thakur et al 2010a(Thakur et al , 2011(Thakur et al , 2012a.…”

“…Depending on the nanoreinforcement used and composition of nanocomposite, materials with improved abrasion and wear resistance, dimensional and thermal stability, electrical conductivity, permittivity and breakdown strength, mechanical barrier, and flammability properties may be designed (Schadler 2003;Lin et al 2011a, b;Thakur et al 2012a). Concretely, some literature data show that renewable resources such as natural fibers in the field of fiber-reinforced materials with their new range of applications represent an important basis in obtaining ecofriendly materials (Thakur et al 2012b, c, d, e).…”

Simple, Economical, Scalable and Sustainable Route for Functionalization BNNTS

“…In addition, when compared to CNTs, BNNTs exhibited a greater homogeneity in their electronic properties, since these properties are not influenced by chirality and geometry [2,7] . The properties cited above make BNNTs promising for applications in nanoelectronics devices, gas sensors, applications involving high temperature and aggressive environments, as well as in high performance and structural composites [8,9] . Despite the remarkable properties, BNNTs present low solubility in solvents due to their low surface chemical reactivity (especially when they have a high degree of crystallinity) and a high tendency to self-aggregation [10] .…”

“…Despite the remarkable properties, BNNTs present low solubility in solvents due to their low surface chemical reactivity (especially when they have a high degree of crystallinity) and a high tendency to self-aggregation [10] . Thus, its applicability is considerably reduced, especially when it becomes necessary to disperse them in a given solvent or even in a polymeric material [8,11] . Functionalization is considered one of the solutions to overcome these problems.…”