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      Crystallization Behavior and Properties of Glass Fiber Reinforced Polypropylene Composites

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          Abstract

          Glass fiber with different content and different kinds of compatibilizers were used to prepare glass fiber-reinforced polypropylene (GFRP) composites. β-nucleating agent with different content was used to prepare β-polypropylene (PP), after which the toughness, crystallization ability and heat resistance were all enhanced. Differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) showed that the crystallite degree and crystallization ability were all greatly improved and β-PP was in dominant position. At last, both β-nucleating agent and glass fiber were used to modify the PP composites (β-GFRP). The formation of β-form PP made the matrix softer, which was beneficial for energy absorption and enhancement of toughness. The tensile strength, flexural strength and flexural modulus were improved dramatically, which were attributed to the coeffect of framework structure of GF and β-form PP.

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          Spherulitic Crystallization in Polypropylene

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            β-MODIFICATION OF ISOTACTIC POLYPROPYLENE: PREPARATION, STRUCTURE, PROCESSING, PROPERTIES, AND APPLICATION

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              The spherulitic and lamellar morphology of melt-crystallized isotactic polypropylene

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                Author and article information

                Journal
                Polymers (Basel)
                Polymers (Basel)
                polymers
                Polymers
                MDPI
                2073-4360
                17 July 2019
                July 2019
                : 11
                : 7
                : 1198
                Affiliations
                [1 ]Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China
                [2 ]Department of Polymer Science, The University of Akron, Akron, OH 44325-3909, USA
                Author notes
                Author information
                https://orcid.org/0000-0002-3875-7127
                Article
                polymers-11-01198
                10.3390/polym11071198
                6680460
                31319580
                f9c5045a-6a46-435a-9ecb-9b89d5c1cb26
                © 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
                : 10 June 2019
                : 01 July 2019
                Categories
                Article

                β-nucleating agent,glass fiber,polypropylene,crystallization,properties

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