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Abstract
Abstract
Rheological and mechanical properties, structural characteristics, extrusion and injection molding behavior of blends of polycarbonate (PC) with a thermotropic, wholly aromatic copolyesteramide have been investigated. The processability of polycarbonate is remarkably improved by addition of small contents of liquid crystal polymer. All the flow curves of the blends lie between those of the pure components. In the processing conditions adopted, the LCP particles are easily elongated in the flow direction. In this direction the elastic modulus rises remarkably with LCP content. The modulus-composition curve is, however, lower than that expected on the basis of an additive rule due to the incompatibility and poor adhesion between the two phases. Finally, injection molding of this extrusion grade PC has been easily performed by adding small contents of LCP. The impact strength values of the injection molding samples of these blends are only slightly lower than that of the pure PC.
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Affiliation(s)
- A. Valenza
- Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, University of Palermo, Palermo, Italy
| | - F. P. La Mantia
- Dipartimento di Ingegneria Chimica dei Processi e dei Materiali, University of Palermo, Palermo, Italy
| | - M. Paci
- Dipartimento di Ingegneria Chimica, Chimica Industrial e Scienza dei Materiali, University of Pisa, Pisa, Italy
| | - P. L. Magagnini
- Dipartimento di Ingegneria Chimica, Chimica Industrial e Scienza dei Materiali, University of Pisa, Pisa, Italy
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Correnti A, Bocchino M, Filippi S, Magagnini PL, Polacco G, La Mantia FP. Recycling of inside upholstery of end-of-life cars. J Appl Polym Sci 2005. [DOI: 10.1002/app.21638] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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La Mantia FP, Scaffaro R, Magagnini PL, Paci M, Chiezzi C, Sek D, Minkova LI, Miteva T. Compatibilization of blends of polyethylene with a semirigid liquid crystalline polymer by PE-g-LCP copolymers. POLYM ENG SCI 2004. [DOI: 10.1002/pen.11760] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Minkova L, Magagnini PL. Banded texture in sheared a semiflexible thermotropic liquid-crystalline polyester and its graft copolymers with polyolefins. Colloid Polym Sci 2001. [DOI: 10.1007/s003960000403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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Khodzhaeva VL, Konstantinov II, Magagnini PL, Tassi EL. IR dichroism study of orientational ordering of liquid-crystalline acrylates. Russ Chem Bull 1999. [DOI: 10.1007/bf02494556] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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La Mantia FP, Scaffaro R, Magagnini PL, Paci M, Minkova LI, Miteva T. Effect of the components' molar mass and of the mixing conditions on the compatibilization of PE-LCP blends by PE-g-LCP copolymers. J Appl Polym Sci 1999. [DOI: 10.1002/(sici)1097-4628(19990124)71:4<603::aid-app12>3.0.co;2-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Magagnini PL, Pracella M, Minkova LI, Miteva T, Sek D, Grobelny J, La Mantia FP, Scaffaro R. Synthesis of PP-LCP graft copolymers and their compatibilizing activity for PP/LCP blends. J Appl Polym Sci 1998. [DOI: 10.1002/(sici)1097-4628(19980711)69:2<391::aid-app21>3.0.co;2-y] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Minkova LI, Miteva T, Sek D, Kaczmarczyk B, Magagnini PL, Paci M, La Mantia FP, Scaffaro R. Reactive blending of a functionalized polyethylene with a semiflexible liquid crystalline copolyester. J Appl Polym Sci 1996. [DOI: 10.1002/(sici)1097-4628(19961205)62:10<1613::aid-app13>3.0.co;2-2] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Minkova L, Magagnini PL. Morphology and crystallization of blends of linear low density polyethylene with a semiflexible liquid crystalline polymer. Colloid Polym Sci 1996. [DOI: 10.1007/bf00658907] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Mantia FPL, Geraci C, Vinci M, Pedretti U, Roggero A, Minkova LI, Magagnini PL. Morphology and properties of blends of polyethylene with a semiflexible liquid crystalline polymer. J Appl Polym Sci 1995. [DOI: 10.1002/app.1995.070580508] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Valenza A, La Mantia FP, Minkova LI, De Petris S, Paci M, Magagnini PL. Rheological behavior and thermal stability of poly(phenylene sulfide)/vectra-B950 blends. J Appl Polym Sci 1994. [DOI: 10.1002/app.1994.070521113] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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La Mantia FP, Valenza A, Paci M, Magagnini PL, Pedretti U, Roggero A. Rheological behavior of a semirigid liquid crystal polymer. POLYM ENG SCI 1993. [DOI: 10.1002/pen.760331503] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Vittoria V, Russo R, De Candia F, Magagnini PL, Bresci B. Transport properties of a side-chain liquid-crystalline polymer. Poly(4-acryloyloxy biphenyl). ACTA ACUST UNITED AC 1991. [DOI: 10.1002/polb.1991.090290915] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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La Mantia FP, Valenza A, Paci M, Magagnini PL. Liquid crystal polymers (LCP) as processing aids and reinforcing agents. A study of nylon 6/LCP blends. J Appl Polym Sci 1989. [DOI: 10.1002/app.1989.070380318] [Citation(s) in RCA: 54] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Di Maina M, Cesca S, Giusti P, Ferraris G, Magagnini PL. Untersuchungen über die durch synkatalytische Systeme auf der Basis Al-organischer Verbindungen ausgelösten Polymerisationen. 6. Mitt. Vergleich mit der Isobuten-Polymerisation mit C2U5AlCl2 oder AICl3. Colloid Polym Sci 1978. [DOI: 10.1007/bf01638334] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Magagnini PL, Cesca S, Giusti P, Priola A, Di Maina M. Untersuchungen über die durch synkatalytische Systeme auf der Basis Al-organischer Verbindungen ausgelösten Polymerisationen. 7. Mitt. Reaktionsmechanismen. Colloid Polym Sci 1978. [DOI: 10.1007/bf01638333] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Turchi G, Matera F, Magagnini PL. Die Ursache für die Initiierungsaktivität von (C2H5)3O+PF6− bei der Polymerisation von N-Vinylcarbazol. Colloid Polym Sci 1975. [DOI: 10.1007/bf02352132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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