Comparative study of the effect of TiO2 and ZnO on the crystallization of PHB
ABSTRACT PHB/TiO2 and PHB/ZnO compounds were prepared in a laboratory internal mixer. Crystallization was investigated by differential scanning calorimetry (DSC) with heating and cooling rates ranging from 5 to 30 °C/min. Fractured surface of selected samples was analysed by scanning electron microscopy (SEM). From the SEM images, it was observed that ZnO and TiO2 nanoparticles were properly dispersed in the PHB matrix. DSC studies revealed that the addition of TiO2 and ZnO changed the temperature and crystallization rate but did not affect the total crystallinity significantly. In general, TiO2 behaved as nucleating agent greatly influencing the PHB crystallization.
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Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
2017
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oai:scielo:S1517-707620170004004032017-10-02Comparative study of the effect of TiO2 and ZnO on the crystallization of PHBJaques,Nichollas GuimarãesSilva,Ingridy Dayane dos SantosBarbosa Neto,Manoel da CruzDiniz,Rayane Karoline MeloWellen,Renate Maria RamosCanedo,Eduardo Luis PHB crystallization TiO2 ZnO DSC ABSTRACT PHB/TiO2 and PHB/ZnO compounds were prepared in a laboratory internal mixer. Crystallization was investigated by differential scanning calorimetry (DSC) with heating and cooling rates ranging from 5 to 30 °C/min. Fractured surface of selected samples was analysed by scanning electron microscopy (SEM). From the SEM images, it was observed that ZnO and TiO2 nanoparticles were properly dispersed in the PHB matrix. DSC studies revealed that the addition of TiO2 and ZnO changed the temperature and crystallization rate but did not affect the total crystallinity significantly. In general, TiO2 behaved as nucleating agent greatly influencing the PHB crystallization.info:eu-repo/semantics/openAccessLaboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH2Matéria (Rio de Janeiro) v.22 n.4 20172017-01-01info:eu-repo/semantics/articletext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762017000400403en10.1590/s1517-707620170004.0214 |
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Jaques,Nichollas Guimarães Silva,Ingridy Dayane dos Santos Barbosa Neto,Manoel da Cruz Diniz,Rayane Karoline Melo Wellen,Renate Maria Ramos Canedo,Eduardo Luis |
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Jaques,Nichollas Guimarães Silva,Ingridy Dayane dos Santos Barbosa Neto,Manoel da Cruz Diniz,Rayane Karoline Melo Wellen,Renate Maria Ramos Canedo,Eduardo Luis Comparative study of the effect of TiO2 and ZnO on the crystallization of PHB |
| author_facet |
Jaques,Nichollas Guimarães Silva,Ingridy Dayane dos Santos Barbosa Neto,Manoel da Cruz Diniz,Rayane Karoline Melo Wellen,Renate Maria Ramos Canedo,Eduardo Luis |
| author_sort |
Jaques,Nichollas Guimarães |
| title |
Comparative study of the effect of TiO2 and ZnO on the crystallization of PHB |
| title_short |
Comparative study of the effect of TiO2 and ZnO on the crystallization of PHB |
| title_full |
Comparative study of the effect of TiO2 and ZnO on the crystallization of PHB |
| title_fullStr |
Comparative study of the effect of TiO2 and ZnO on the crystallization of PHB |
| title_full_unstemmed |
Comparative study of the effect of TiO2 and ZnO on the crystallization of PHB |
| title_sort |
comparative study of the effect of tio2 and zno on the crystallization of phb |
| description |
ABSTRACT PHB/TiO2 and PHB/ZnO compounds were prepared in a laboratory internal mixer. Crystallization was investigated by differential scanning calorimetry (DSC) with heating and cooling rates ranging from 5 to 30 °C/min. Fractured surface of selected samples was analysed by scanning electron microscopy (SEM). From the SEM images, it was observed that ZnO and TiO2 nanoparticles were properly dispersed in the PHB matrix. DSC studies revealed that the addition of TiO2 and ZnO changed the temperature and crystallization rate but did not affect the total crystallinity significantly. In general, TiO2 behaved as nucleating agent greatly influencing the PHB crystallization. |
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Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro |
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2017 |
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http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762017000400403 |
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