Blendas biodegradáveis de poli(3-hidroxibutirato)/poli(e-caprolactona): obtenção e estudo da miscibilidade
Due to its biodegradability, poly(3-hydroxybutyrate) P(3-HB) has attracted much attention in the environmental sector. However, some characteristics of this polymer, such as high crystallinity, poor processability and high brittleness, have lead several research groups to study polymeric blends in order to modify P(3-HB) properties. Poly(epsilon-caprolactone) (PCL) is a synthetic polyester which is completely degraded after about one year when buried in soil. In general, it acts as a polymeric plasticizer lowering the elastic modulus and enhancing the processability of the blend. Blends of two biodegradable polymers, P(3-HB) and PCL have been prepared by casting in different compositions. Miscibility, thermal behavior and morphology of these blends were studied using modulated differential scanning calorimetry (MDSC), scanning electron microscopy (SEM) and polarizing light microscopy (PLM). The two glass transition temperatures, detected by MDSC, suggest the immiscibility of the system. Phase separation was confirmed by PLM.
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ABM, ABC, ABPol
2003
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oai:scielo:S1516-143920030003000102003-11-28Blendas biodegradáveis de poli(3-hidroxibutirato)/poli(e-caprolactona): obtenção e estudo da miscibilidadeVogelsanger,NiltonFormolo,Michele CristinaPezzin,Ana Paula TestaSchneider,Andréa Lima dos SantosFurlan,Sandra AparecidaBernardo,Heloísa PinnaPezzin,Sérgio HenriquePires,Alfredo Tibúrcio NunesDuek,Eliana Aparecida de Rezende blends miscibility P(3-HB) PCL Due to its biodegradability, poly(3-hydroxybutyrate) P(3-HB) has attracted much attention in the environmental sector. However, some characteristics of this polymer, such as high crystallinity, poor processability and high brittleness, have lead several research groups to study polymeric blends in order to modify P(3-HB) properties. Poly(epsilon-caprolactone) (PCL) is a synthetic polyester which is completely degraded after about one year when buried in soil. In general, it acts as a polymeric plasticizer lowering the elastic modulus and enhancing the processability of the blend. Blends of two biodegradable polymers, P(3-HB) and PCL have been prepared by casting in different compositions. Miscibility, thermal behavior and morphology of these blends were studied using modulated differential scanning calorimetry (MDSC), scanning electron microscopy (SEM) and polarizing light microscopy (PLM). The two glass transition temperatures, detected by MDSC, suggest the immiscibility of the system. Phase separation was confirmed by PLM.info:eu-repo/semantics/openAccessABM, ABC, ABPolMaterials Research v.6 n.3 20032003-06-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000300010pt10.1590/S1516-14392003000300010 |
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Vogelsanger,Nilton Formolo,Michele Cristina Pezzin,Ana Paula Testa Schneider,Andréa Lima dos Santos Furlan,Sandra Aparecida Bernardo,Heloísa Pinna Pezzin,Sérgio Henrique Pires,Alfredo Tibúrcio Nunes Duek,Eliana Aparecida de Rezende |
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Vogelsanger,Nilton Formolo,Michele Cristina Pezzin,Ana Paula Testa Schneider,Andréa Lima dos Santos Furlan,Sandra Aparecida Bernardo,Heloísa Pinna Pezzin,Sérgio Henrique Pires,Alfredo Tibúrcio Nunes Duek,Eliana Aparecida de Rezende Blendas biodegradáveis de poli(3-hidroxibutirato)/poli(e-caprolactona): obtenção e estudo da miscibilidade |
author_facet |
Vogelsanger,Nilton Formolo,Michele Cristina Pezzin,Ana Paula Testa Schneider,Andréa Lima dos Santos Furlan,Sandra Aparecida Bernardo,Heloísa Pinna Pezzin,Sérgio Henrique Pires,Alfredo Tibúrcio Nunes Duek,Eliana Aparecida de Rezende |
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Vogelsanger,Nilton |
title |
Blendas biodegradáveis de poli(3-hidroxibutirato)/poli(e-caprolactona): obtenção e estudo da miscibilidade |
title_short |
Blendas biodegradáveis de poli(3-hidroxibutirato)/poli(e-caprolactona): obtenção e estudo da miscibilidade |
title_full |
Blendas biodegradáveis de poli(3-hidroxibutirato)/poli(e-caprolactona): obtenção e estudo da miscibilidade |
title_fullStr |
Blendas biodegradáveis de poli(3-hidroxibutirato)/poli(e-caprolactona): obtenção e estudo da miscibilidade |
title_full_unstemmed |
Blendas biodegradáveis de poli(3-hidroxibutirato)/poli(e-caprolactona): obtenção e estudo da miscibilidade |
title_sort |
blendas biodegradáveis de poli(3-hidroxibutirato)/poli(e-caprolactona): obtenção e estudo da miscibilidade |
description |
Due to its biodegradability, poly(3-hydroxybutyrate) P(3-HB) has attracted much attention in the environmental sector. However, some characteristics of this polymer, such as high crystallinity, poor processability and high brittleness, have lead several research groups to study polymeric blends in order to modify P(3-HB) properties. Poly(epsilon-caprolactone) (PCL) is a synthetic polyester which is completely degraded after about one year when buried in soil. In general, it acts as a polymeric plasticizer lowering the elastic modulus and enhancing the processability of the blend. Blends of two biodegradable polymers, P(3-HB) and PCL have been prepared by casting in different compositions. Miscibility, thermal behavior and morphology of these blends were studied using modulated differential scanning calorimetry (MDSC), scanning electron microscopy (SEM) and polarizing light microscopy (PLM). The two glass transition temperatures, detected by MDSC, suggest the immiscibility of the system. Phase separation was confirmed by PLM. |
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ABM, ABC, ABPol |
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2003 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392003000300010 |
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