<i>In Situ</i>
            Thermal, Photon, and Electron‐Beam Synthesis of Polymer Nanocomposites

Persano, Luana; Camposeo, Andrea; Laera, Anna Maria; Benedetto, Francesca Di; Resta, V.; Tapfer, L.; Pisignano, Dario

doi:10.1002/9783527670307.ch7

Cited by 1 publication

(1 citation statement)

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“…The fabrication of composite materials [1][2][3][4] with tailored spatial distribution of nanoparticles (NPs) in the matrix opens up a range of new applications in various fields, including the fabrication of photonic, plasmonic, and excitonic devices, optoelectronic circuitry, and optical memory systems. This problem is particularly relevant in conjunction with photoinduced nanocomposites.…”

Section: Introductionmentioning

confidence: 99%

Diffusion-controlled alteration of inhomogeneous materials: tailoring of the spatial distribution of nanoparticles in nanocomposites

Sapogova

Pikulin

Smirnov

et al. 2016

Phys. Chem. Chem. Phys.

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Gaining control over the spatial distribution of nanoparticles in composite polymer materials is a relevant goal for a range of nanotechnology applications. Promising methods to produce nanoparticles directly in the polymer matrix rely on their self-assembly from the atoms that are generated due to the photodestruction of the precursor additive. Such materials are known as photoinduced nanocomposites. In this work, we theoretically study the possibility of producing tailored nanoparticle distributions in such materials by the local modification of their physical properties. For instance, laser irradiation may cause a permanent free-volume expansion (laser swelling), which results in a substantial change in the diffusivity of the aggregating atoms. The modeling shows that the nanoparticles tend to accumulate in the domains where the diffusivity is greater. Additionally, the variation of the matrix properties may result in spatial modulation of the atom-matrix interaction energy and thus modulation of the atom solubility in the matrix. This phenomenon can also affect the NP spatial distribution. This paper formulates the problem of the precipitation phase transition from the supersaturated solution in a polymer solvent which is "frozen" in the spatially nonuniform state. The basic traits of this phenomenon are studied by means of an analytical model. Then the NP growth is simulated using a lattice model.

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Section: Introductionmentioning

confidence: 99%