Particle size dependence of the Young's modulus of filled polymers: 2. Annealing and solid-state nuclear magnetic resonance experiments

Vollenberg, P.H.T.; Haan, J.W. de; Ven, L.J.M. van de; Heikens, Derk D

doi:10.1016/0032-3861(89)90327-3

Cited by 47 publications

(21 citation statements)

References 20 publications

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“…An increased modulus is a well known fact in particulate filled micro composites. But an increment in tensile modulus associated with an increment in tensile strength is reported as the peculiarity of the nano composites [40]. These results show that the small BNN particles enable both relatively good dispersion and improved interfacial stress transfer in BNN-PS composites.…”

Section: Theoretical Modeling Of Tensile Stressmentioning

confidence: 73%

Mechanical properties of ceramic-polymer nanocomposites

Abraham¹,

Kuryan²,

Isac³

et al. 2009

Express Polym. Lett.

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Nano crystalline powders of Barium Sodium Niobate (BNN) with the composition Ba3–2x Na4+x R Nb10 O30 with (R stands for rare earth = 0, x = 0) have been prepared by conventional ceramic technique. Barium Sodium Niobate can form a wide range of solid solutions, incorporating rare earth and alkali, alkaline earth elements with different compositions. The powder belonged to tungsten bronze type structure with tetragonal symmetry and lattice constants a = b = 1.2421 nm and c = 0.3903 nm. XRD (X-ray Diffraction) SEM (Scanning Electron Microscope) and AFM (Atomic Force Microscope) studies revealed that the particle size is in the nanometer range. Composites are prepared by mixing powders of BNN with polystyrene at different volume fractions of the BNN. Melt mixing technique is carried out in a Brabender Plasticoder at a rotor speed of 60 rpm (rotations per minute) for composite preparation. Mechanical properties such as stress-strain behavior, Young’s modulus, tensile strength, strain at break etc. are evaluated. Addition of filler enhances the mechanical properties of the polymer such as Young’s modulus and tensile strength. The composites showed the trend of perfect adhesion between the filler and the polymer. The filler particles are distributed relatively uniform fashion in all composites and the particles are almost spherical in shape with irregular boundaries. To explore more carefully the degree of interfacial adhesion between the two phases, the results are analyzed by using models featuring adhesion parameter. The experimental results are compared with theoretical predictions

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Section: Theoretical Modeling Of Tensile Stressmentioning

confidence: 73%

Mechanical properties of ceramic-polymer nanocomposites

Abraham¹,

Kuryan²,

Isac³

et al. 2009

Express Polym. Lett.

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“…The filler particles can act as initiation sites of the solidification process, and for this reason they could be surrounded by an enriched layer of polymer with an increased modulus (high modulus layer), around which a zone of material with a lower modulus is found. 34 The effect of this morphology on the Young's modulus of the filled polymer with respect to the filler particle size will cause a combination of both effects. Two extremes are treated: a polymer filled with very small particle (nano particle), and a polymer filled with very large particles (size>10 lm).…”

Section: Kerner Equationmentioning

confidence: 98%

Structural and mechanical properties of YBCO‐polystyrene composites

Abraham

Kuryan³

et al. 2010

J of Applied Polymer Sci

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Microcrystalline powders of yttrium barium copper oxide [YBa 2 Cu 3 O 7 ] have been prepared by conventional ceramic preparation technique. The powder belong to orthorhombic symmetry with unit cell dimensions 'a'¼3.8214 Å , 'b'¼3.8877 Å and 'c'¼11.693 Å . XRD and SEM studies revealed that its particle size is in the micrometer range. Micro composites of polystyrene with different loading of yttrium barium copper oxide fillers were prepared by melt mixing in a brabender plasticorder at a rotor speed of 60 rpm. The lattice parameters of the constituent phases are the same in all the composites. Mechanical properties such as stress-strain behavior, Young's modulus, and tensile strength were studied as a function of filler loading. Addition of filler enhances the Young's modulus of the polymer. Because of the poor filler-matrix adhesion, tensile strength and strain at break decreases with filler loading. To explore more carefully the degree of interfacial adhesion between the two phases, the results were analyzed by using models featuring an adhesion parameter. Finally experimental results were compared with theoretical predictions.

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“…17, and note that these results are supported by the studies of Netralvali et al [15] using a different test and different polymers. In addition, evidence has recently appeared which suggests that a high modulus (and presumably high strength) form of polymer may possibly be present at the ceramic-polymer interface [16,17].…”

Section: Tensile and Flexural Propertiesmentioning

confidence: 99%

Mesomechanical Model for Fibre Composites: The Role of the Interface

Piggott¹

1992

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Particle size dependence of the Young's modulus of filled polymers: 2. Annealing and solid-state nuclear magnetic resonance experiments

Cited by 47 publications

References 20 publications

Mechanical properties of ceramic-polymer nanocomposites

Mechanical properties of ceramic-polymer nanocomposites

Structural and mechanical properties of YBCO‐polystyrene composites

Mesomechanical Model for Fibre Composites: The Role of the Interface

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