Polymer nanocomposites

Lagashetty, Arunkumar; Venkataraman, A.

doi:10.1007/bf02867106

Cited by 73 publications

(44 citation statements)

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“…These properties offer tremendous potential for exciting technological innovations and other research areas in the fields of material science. The properties of these composites are dependent upon the inorganic/organic materials reinforced in the polymer matrix [1][2][3][4][5][6]. Therefore, an important usage of nanomaterials today is in reinforcing polymer composites due to their ultra high tensile strength, stiffness and various other mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Enhanced mechanical properties of polyvinyl alcohol composite films containing copper oxide nanoparticles as filler

et al. 2015

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This study has been conducted to investigate the effect of incorporating CuO nanoparticles inside PVA matrix with the aim of enhancing the mechanical properties of PVA for reinforcement purposes. Films were prepared by solution intercalation technique with 0.5, 1.0, 1.5 and 2.0 wt% CuO nanofiller content taking neat PVA as the reference for the study. Structural characterisations of the prepared nanocomposite films were carried out by FTIR, SEM and XRD techniques. Various mechanical parameters such as tensile strength, elastic modulus, flexural strength and toughness were investigated and significant enhancement in the properties of polyvinyl alcohol films containing CuO nanofillers was observed. Elastic modulus and toughness showed a linear relation with respect to nanofiller concentration at low wt%, whereas at higher wt% of CuO, the nature was observed to be non-linear. PVA-2.0 wt% CuO nanocomposite showed the highest values of flexural strength, toughness and tensile strength among all the fabricated nanocomposite films.

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Section: Introductionmentioning

confidence: 99%

Enhanced mechanical properties of polyvinyl alcohol composite films containing copper oxide nanoparticles as filler

et al. 2015

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“…This is a direct result of POSS's nanoscopic size and its relationship to polymer dimensions. Nonetheless, POSS improves product performance (reduces the flammability, heat discharge, and viscosity of the polymer [7][8][9][10]) while retaining its lightweight and ductile features, without sacrificing mechanical properties (may cause an increase of strength, modulus, rigidity) and is used in a wide variety of applications, e.g., drug delivery, polymer electrolytes, thermoplastic, and thermosetting polymers [11][12][13][14]. However, the properties of polymer nanocomposites containing POSS nanostructures depend on the successful incorporation of POSS particles in polymer matrices.…”

Section: Introductionmentioning

confidence: 99%

Interfacial interactions in PTT–PTMO/polyhedral oligomeric silsesquioxane (POSS) nanocomposites and their impact on mechanical, thermal, and dielectric properties

et al. 2018

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Poly(trimethylene terephthalate-block-tetramethylene oxide) (PTT-PTMO)/polyhedral oligomeric silsesquioxane (POSS) nanocomposites, synthesized by in situ polymerization, are characterized in detail in terms of interfacial interactions between functional groups on the surface of POSS and polymer chains. The impact of POSS incorporation on the molecular mobility is investigated by means of dielectric spectroscopy. It is found that PTT-PTMO/POSS nanocomposites exhibit higher values of stress at strain of 100% that in comparison with neat PTT-PTMO might result from the influence of POSS particles on the molecular mobility of polymer chains, which is probably due to the interfacial interactions between functional groups on the surface of POSS particles with the polymer matrix. Moreover, it is found that there is no variation of the segmental relaxation for the nanocomposite investigated and there is an increase in the interfacial polarization induced by the presence of POSS as seen in the increment of the real part of the dielectric permittivity.

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“…That's why, a new class of hybrid materials composed of polymers into which nanosized inorganic particles are dispersed, could produce desirable structural and functional properties without high processing costs and without compromising other valuable properties. Nanoparticles impart many functional properties, and PU macromolecules provide structure and processability [3][4][5][6]. Numerous studies showed that nanometer-sized fillers have a large surface-area-to-volume ratio and could be easily dispersed in a PU matrix, hence facilitating the enhancement of a desired property, such as barrier property, heat resistance, modulus, strength and flammability [7,8].…”

Section: Introductionmentioning

confidence: 99%

The influence of POSS nanoparticles on selected thermal properties of polyurethane-based hybrids

Pielichowski

Raftopoulos

Pielichowski

2017

J Therm Anal Calorim

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Organic-inorganic hybrid materials, prepared via chemical synthesis route or physical blending of functionalized nanofillers within polymer matrix, have gained an increased attention in the recent years. Polyhedral oligomeric silsesquioxane (POSS) nanoparticles, due to their nanometer size and functionalization possibilities, are applied as effective modifiersboth chemical and physical, for polymer matrices, including polyurethanes (PU). In this work, we describe the synthesis and processing of polyurethane/POSS hybrid nanocomposites and discuss the influence of POSS moieties on the thermal properties of PU matrices. Glass transition, the crystallinity of the soft phase, as well as the order-disorder transitions are affected by the incorporation of POSS in the polyurethane structure. Direct polymer-POSS interaction, or -indirect-due to the suppression or enhancement of microphase separation by the POSS moieties are discussed in terms of topology of the polymeric structure with the key role of POSS functionalization.

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Polymer nanocomposites

Cited by 73 publications

References 0 publications

Enhanced mechanical properties of polyvinyl alcohol composite films containing copper oxide nanoparticles as filler

Enhanced mechanical properties of polyvinyl alcohol composite films containing copper oxide nanoparticles as filler

Interfacial interactions in PTT–PTMO/polyhedral oligomeric silsesquioxane (POSS) nanocomposites and their impact on mechanical, thermal, and dielectric properties

The influence of POSS nanoparticles on selected thermal properties of polyurethane-based hybrids

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