Poly(butylene terephthalate) (PBT) and a sample of polyamide have been melt processed in the presence of two new phosphazene compounds, namely 2,2-dichloro-4,4,6,6-bis[spiro(2′,2″dioxy-1′,1″biphenyl) ]cyclotriphosphazene (2Cl-CP) and 2,2-bis-(2-methoxy-4-methyleneoxy-phenoxy)-4, 4,6,6,-bis[spiro(2′,2″dioxy-1′,1″biphenyl)] cyclophosphazene (CP-2EPOX). The blends were prepared by using polyamide 6 (PA6) at 25/75 w/w and 75/25 w/w composition. In order to perform a preliminary analysis on the behaviour of the blends, the materials were prepared in a batch mixer. The materials have been completely characterized from a rheological, morphological, mechanical point of view. The results indicate that the additives used cause an increase of the rupture properties and of the viscosity especially in the PA-rich blend. This result can be attributed to a chain extension effect on the PA phase, even if some compatibilisation with the formation of PBT/PA6 copolymers cannot be excluded as evidenced by the reduction of particle dimensions and by the improvement of the adhesion between the phases. Between the two compatibilisers, the CP-2EPOX displays the best results for both the investigated compositions while 2Cl-CP seems to act simply as a PA6 chain extender with very low compatibilising effect.

Scaffaro, R., Botta, L., La Mantia, F.P., Magagnini, P., Acierno, D., Gleria, M., et al. (2005). Effect of adding new phosphazene compounds to poly(butylene terephthalate)/polyamide blends. I: Preliminary study in a batch mixer. POLYMER DEGRADATION AND STABILITY, 90(2 SPEC. ISS.), 234-243 [10.1016/j.polymdegradstab.2005.03.019].

Effect of adding new phosphazene compounds to poly(butylene terephthalate)/polyamide blends. I: Preliminary study in a batch mixer

SCAFFARO, Roberto;BOTTA, Luigi;LA MANTIA, Francesco Paolo;
2005

Abstract

Poly(butylene terephthalate) (PBT) and a sample of polyamide have been melt processed in the presence of two new phosphazene compounds, namely 2,2-dichloro-4,4,6,6-bis[spiro(2′,2″dioxy-1′,1″biphenyl) ]cyclotriphosphazene (2Cl-CP) and 2,2-bis-(2-methoxy-4-methyleneoxy-phenoxy)-4, 4,6,6,-bis[spiro(2′,2″dioxy-1′,1″biphenyl)] cyclophosphazene (CP-2EPOX). The blends were prepared by using polyamide 6 (PA6) at 25/75 w/w and 75/25 w/w composition. In order to perform a preliminary analysis on the behaviour of the blends, the materials were prepared in a batch mixer. The materials have been completely characterized from a rheological, morphological, mechanical point of view. The results indicate that the additives used cause an increase of the rupture properties and of the viscosity especially in the PA-rich blend. This result can be attributed to a chain extension effect on the PA phase, even if some compatibilisation with the formation of PBT/PA6 copolymers cannot be excluded as evidenced by the reduction of particle dimensions and by the improvement of the adhesion between the phases. Between the two compatibilisers, the CP-2EPOX displays the best results for both the investigated compositions while 2Cl-CP seems to act simply as a PA6 chain extender with very low compatibilising effect.
Settore ING-IND/22 - Scienza E Tecnologia Dei Materiali
Scaffaro, R., Botta, L., La Mantia, F.P., Magagnini, P., Acierno, D., Gleria, M., et al. (2005). Effect of adding new phosphazene compounds to poly(butylene terephthalate)/polyamide blends. I: Preliminary study in a batch mixer. POLYMER DEGRADATION AND STABILITY, 90(2 SPEC. ISS.), 234-243 [10.1016/j.polymdegradstab.2005.03.019].
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/12959
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