PTFE-based core-soft shell nanospheres and soft matrix nanocomposites

Katia Sparnacci; Diego Antonioli; Simone Deregibus; Michele Laus; Tiziana Poggio; Valeri Kapeliouchko; Giovanna Palamone; Giampaolo Zuccheri; Rosita Passeri

doi:10.1021/ma802871y

PTFE-based core-soft shell nanospheres and soft matrix nanocomposites

Katia Sparnacci, Diego Antonioli, Simone Deregibus, Michele Laus, Tiziana Poggio, Valeri Kapeliouchko, Giovanna Palamone, Giampaolo Zuccheri, Rosita Passeri

Dipartimento di Scienze e Innovazione Tecnologica

Risultato della ricerca: Contributo su rivista › Articolo in rivista › peer review

Abstract

A PTFE latex, with particles in the submicrometer size range, was employed as seed in the emulsifier-free emulsion copolymerization of two mixtures of acrylic and methacrylic comonomers to obtain PTFE-based core-soft shell nanoparticles. Stable latexes were obtained. By appropriately choosing the ratio between the comonomers and the PTFE seed in the reaction mixture, it was possible to obtain particles with various sizes and a narrow size distribution. The shell is swollen in water due to the presence of the ionic methacrylic acid units. A fractionated-type crystallization phenomenon of the PTFE component was observed and is ascribed to the small size of the PTFE material. The low glass transition temperatures of the shell forming materials could permit the preparation of soft matrix nanostructured films by latex deposition and water evaporation.

Lingua originale	Inglese
pagine (da-a)	3518-3524
Numero di pagine	7
Rivista	Macromolecules
Volume	42
Numero di pubblicazione	10
DOI	https://doi.org/10.1021/ma802871y
Stato di pubblicazione	Pubblicato - 26 mag 2009

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10.1021/ma802871y

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title = "PTFE-based core-soft shell nanospheres and soft matrix nanocomposites",

abstract = "A PTFE latex, with particles in the submicrometer size range, was employed as seed in the emulsifier-free emulsion copolymerization of two mixtures of acrylic and methacrylic comonomers to obtain PTFE-based core-soft shell nanoparticles. Stable latexes were obtained. By appropriately choosing the ratio between the comonomers and the PTFE seed in the reaction mixture, it was possible to obtain particles with various sizes and a narrow size distribution. The shell is swollen in water due to the presence of the ionic methacrylic acid units. A fractionated-type crystallization phenomenon of the PTFE component was observed and is ascribed to the small size of the PTFE material. The low glass transition temperatures of the shell forming materials could permit the preparation of soft matrix nanostructured films by latex deposition and water evaporation.",

author = "Katia Sparnacci and Diego Antonioli and Simone Deregibus and Michele Laus and Tiziana Poggio and Valeri Kapeliouchko and Giovanna Palamone and Giampaolo Zuccheri and Rosita Passeri",

year = "2009",

month = may,

day = "26",

doi = "10.1021/ma802871y",

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AU - Sparnacci, Katia

AU - Antonioli, Diego

AU - Deregibus, Simone

AU - Laus, Michele

AU - Poggio, Tiziana

AU - Kapeliouchko, Valeri

AU - Palamone, Giovanna

AU - Zuccheri, Giampaolo

AU - Passeri, Rosita

PY - 2009/5/26

Y1 - 2009/5/26

N2 - A PTFE latex, with particles in the submicrometer size range, was employed as seed in the emulsifier-free emulsion copolymerization of two mixtures of acrylic and methacrylic comonomers to obtain PTFE-based core-soft shell nanoparticles. Stable latexes were obtained. By appropriately choosing the ratio between the comonomers and the PTFE seed in the reaction mixture, it was possible to obtain particles with various sizes and a narrow size distribution. The shell is swollen in water due to the presence of the ionic methacrylic acid units. A fractionated-type crystallization phenomenon of the PTFE component was observed and is ascribed to the small size of the PTFE material. The low glass transition temperatures of the shell forming materials could permit the preparation of soft matrix nanostructured films by latex deposition and water evaporation.

AB - A PTFE latex, with particles in the submicrometer size range, was employed as seed in the emulsifier-free emulsion copolymerization of two mixtures of acrylic and methacrylic comonomers to obtain PTFE-based core-soft shell nanoparticles. Stable latexes were obtained. By appropriately choosing the ratio between the comonomers and the PTFE seed in the reaction mixture, it was possible to obtain particles with various sizes and a narrow size distribution. The shell is swollen in water due to the presence of the ionic methacrylic acid units. A fractionated-type crystallization phenomenon of the PTFE component was observed and is ascribed to the small size of the PTFE material. The low glass transition temperatures of the shell forming materials could permit the preparation of soft matrix nanostructured films by latex deposition and water evaporation.

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PTFE-based core-soft shell nanospheres and soft matrix nanocomposites

Abstract

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