Solid state polymerization: its action on thermal and rheological properties of PET/PC reactive blends
The solid state polymerization (SSP) of PET/PC reactive extrusion blends - with and without cobalt catalyst - at different polymer ratios was studied. Thermal and rheological evaluations were performed. DSC results showed changes in the PET's Tg, Tch, Tm and Xc.. The melt flow rate (MFR) decrea...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Associação Brasileira de Polímeros
2013-05-01
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| Series: | Polímeros |
| Subjects: | |
| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282013000300003&tlng=en |
| _version_ | 1798015472079208448 |
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| author | Luis C. Mendes Patrícia S.C. Pereira |
| author_facet | Luis C. Mendes Patrícia S.C. Pereira |
| author_sort | Luis C. Mendes |
| collection | DOAJ |
| description | The solid state polymerization (SSP) of PET/PC reactive extrusion blends - with and without cobalt catalyst - at different polymer ratios was studied. Thermal and rheological evaluations were performed. DSC results showed changes in the PET's Tg, Tch, Tm and Xc.. The melt flow rate (MFR) decreased for PET and the blends. The intrinsic viscosity increased. The variation in calorimetric and rheological properties might be attributed to the PET's chain extension reactions - esterification and transesterification. These reactions led to an increase in the PET's molar mass, consequently shifting the PET's Tg to lower temperature and PET's crystallization, besides reducing the blend miscibility and flowability. |
| first_indexed | 2024-04-11T15:35:03Z |
| format | Article |
| id | doaj.art-cfc19a939c044eefa93f96c394a22dc2 |
| institution | Directory Open Access Journal |
| issn | 1678-5169 |
| language | English |
| last_indexed | 2024-04-11T15:35:03Z |
| publishDate | 2013-05-01 |
| publisher | Associação Brasileira de Polímeros |
| record_format | Article |
| series | Polímeros |
| spelling | doaj.art-cfc19a939c044eefa93f96c394a22dc22022-12-22T04:16:02ZengAssociação Brasileira de PolímerosPolímeros1678-51692013-05-0123329830410.4322/polimeros.2013.031Solid state polymerization: its action on thermal and rheological properties of PET/PC reactive blendsLuis C. Mendes0Patrícia S.C. Pereira1Universidade Federal do Rio de JaneiroCentro Universitário Estadual da Zona OesteThe solid state polymerization (SSP) of PET/PC reactive extrusion blends - with and without cobalt catalyst - at different polymer ratios was studied. Thermal and rheological evaluations were performed. DSC results showed changes in the PET's Tg, Tch, Tm and Xc.. The melt flow rate (MFR) decreased for PET and the blends. The intrinsic viscosity increased. The variation in calorimetric and rheological properties might be attributed to the PET's chain extension reactions - esterification and transesterification. These reactions led to an increase in the PET's molar mass, consequently shifting the PET's Tg to lower temperature and PET's crystallization, besides reducing the blend miscibility and flowability.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282013000300003&tlng=enRheologyblendscatalystsPET/PCthermal properties |
| spellingShingle | Luis C. Mendes Patrícia S.C. Pereira Solid state polymerization: its action on thermal and rheological properties of PET/PC reactive blends Polímeros Rheology blends catalysts PET/PC thermal properties |
| title | Solid state polymerization: its action on thermal and rheological properties of PET/PC reactive blends |
| title_full | Solid state polymerization: its action on thermal and rheological properties of PET/PC reactive blends |
| title_fullStr | Solid state polymerization: its action on thermal and rheological properties of PET/PC reactive blends |
| title_full_unstemmed | Solid state polymerization: its action on thermal and rheological properties of PET/PC reactive blends |
| title_short | Solid state polymerization: its action on thermal and rheological properties of PET/PC reactive blends |
| title_sort | solid state polymerization its action on thermal and rheological properties of pet pc reactive blends |
| topic | Rheology blends catalysts PET/PC thermal properties |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-14282013000300003&tlng=en |
| work_keys_str_mv | AT luiscmendes solidstatepolymerizationitsactiononthermalandrheologicalpropertiesofpetpcreactiveblends AT patriciascpereira solidstatepolymerizationitsactiononthermalandrheologicalpropertiesofpetpcreactiveblends |