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      Lightweight Poly(ε-Caprolactone) Composites with Surface Modified Hollow Glass Microspheres for Use in Rotational Molding: Thermal, Rheological and Mechanical Properties

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          Abstract

          In this work, novel composites based on poly(ε-caprolactone) (PCL) were prepared and characterized in terms of morphological, thermal, rheological and mechanical properties. Hollow glass microspheres (HGM), alone or surface modified by treatment with (3-aminopropyl)triethoxysilane (APTES) in order to enhance the compatibility between the inorganic particles and the polymer matrix, were used to obtain lightweight composites with improved properties. The silanization treatment implies a good dispersion of filler particles in the matrix and an enhanced filler–polymer adhesion. The addition of HGM to PCL has relevant implications on the rheological and mechanical properties enhancing the stiffness of the material. Furthermore, the presence of HGM strongly interferes with the crystallization behavior and thermo-oxidative degradation of PCL. The increase of PCL crystallization rate was observed as a function of the HGM amount in the composites. Finally, rotational molding tests demonstrated the possibility of successfully producing manufactured goods in PCL and PCL-based composites on both a laboratory and industrial scale.

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                Author and article information

                Journal
                Polymers (Basel)
                Polymers (Basel)
                polymers
                Polymers
                MDPI
                2073-4360
                04 April 2019
                April 2019
                : 11
                : 4
                : 624
                Affiliations
                [1 ]Istituto per lo Studio delle Macromolecole—CNR, Via A. Corti 12, 20133 Milano, Italy; iannace@ 123456ismac.cnr.it
                [2 ]Istituto per lo Studio delle Macromolecole—CNR, Via De Marini 6, 16149 Genova, Italy; giulio.falcone@ 123456ge.ismac.cnr.it (G.F.); roberto.utzeri@ 123456ge.ismac.cnr.it (R.U.); paola.stagnaro@ 123456ge.ismac.cnr.it (P.S.)
                Author notes
                Author information
                https://orcid.org/0000-0001-5886-0706
                https://orcid.org/0000-0003-3437-1435
                https://orcid.org/0000-0003-0199-4767
                Article
                polymers-11-00624
                10.3390/polym11040624
                6523073
                30960609
                161f077a-9f7e-48d3-ab68-cda8b99afe1b
                © 2019 by the authors.

                Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license ( http://creativecommons.org/licenses/by/4.0/).

                History
                : 11 March 2019
                : 01 April 2019
                Categories
                Article

                polymer matrix composites,poly(ε-caprolactone),hollow glass microspheres,rotational molding,silanization,morphology,rheological properties,mechanical properties

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