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Star-Branched Polyamides as the Matrix in Thermoplastic Composites. Polymers (Basel) 2022; 14:polym14050942. [PMID: 35267765 PMCID: PMC8912622 DOI: 10.3390/polym14050942] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 02/17/2022] [Accepted: 02/23/2022] [Indexed: 11/17/2022] Open
Abstract
The aim of this study is the preparation of star-shaped branched polyamides (sPA6) with low melt viscosity, but also with improved mechanical properties by reactive extrusion. This configuration has been obtained by grafting a tri-functional, three-armed molecule: 5-aminoisophthalic-acid, used as a linking agent (LA). The balance between the fluidity, polarity and mechanical properties of sPA6s is the reason why these materials have been investigated for the impregnation of fabrics in the manufacture of thermoplastic composites. For these impregnation processes, the low viscosity of the melt has allowed the processing parameters (temperature, pressure and time) to be reduced, and its new microstructure has allowed the mechanical properties of virgin thermoplastic resins to be maintained. A significant improvement in the ultrasonic welding processes of the composites was also found when an energy director based on these materials was applied at the interface. In this work, an exhaustive microstructural characterization of the obtained sPAs is presented and related to the final properties of the composites obtained by film stacking.
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Luo Z, Pei J. Core Cross-Linked Star Polymer Prepared Via Arm-Linking Reaction Mediated By 1,1-Diphenylethene Radical Polymerization System. JOURNAL OF MACROMOLECULAR SCIENCE PART A-PURE AND APPLIED CHEMISTRY 2015. [DOI: 10.1080/10601325.2015.1063867] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Yang J, Cao S, Xin J, Chen X, Wu W, Li J. Calcium carbonate deposition on layer-by-layer systems assembled from star polymers. JOURNAL OF POLYMER RESEARCH 2013. [DOI: 10.1007/s10965-013-0157-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Li J, Yang J, Xu F, Xu J, Yan D, Chen C, Li J. A facile strategy to modulate the fluorescent properties of star polymers by varying the arm numbers. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-012-9941-2] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Synthesis of star-shaped poly(methyl acrylate) via ATRP and preliminary evaluation of its reinforcing properties for PVC. JOURNAL OF POLYMER RESEARCH 2012. [DOI: 10.1007/s10965-011-9819-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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