ETDs @PUC-Rio
| Título: | DSC, DMA, XPS, CONTACT ANGLE E AFM ANALYSIS OF DE ACC/PHAMCL THICK FILMS SURFACES | ||||||||||||||||||||||||||||||||||||
| Autor: |
SAMANTHA FONSECA DOS SANTOS |
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| Colaborador(es): |
RODRIGO PRIOLI MENEZES - Orientador RUBEN JESUS SANCHEZ RODRIGUEZ - Coorientador |
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| Catalogação: | 10/MAR/2006 | Língua(s): | PORTUGUESE - BRAZIL |
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| Tipo: | TEXT | Subtipo: | THESIS | ||||||||||||||||||||||||||||||||||
| Notas: |
[pt] Todos os dados constantes dos documentos são de inteira responsabilidade de seus autores. Os dados utilizados nas descrições dos documentos estão em conformidade com os sistemas da administração da PUC-Rio. [en] All data contained in the documents are the sole responsibility of the authors. The data used in the descriptions of the documents are in conformity with the systems of the administration of PUC-Rio. |
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| Referência(s): |
[pt] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=7887&idi=1 [en] https://www.maxwell.vrac.puc-rio.br/projetosEspeciais/ETDs/consultas/conteudo.php?strSecao=resultado&nrSeq=7887&idi=2 |
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| DOI: | https://doi.org/10.17771/PUCRio.acad.7887 | ||||||||||||||||||||||||||||||||||||
| Resumo: | |||||||||||||||||||||||||||||||||||||
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In this work, the study of thick films formed by cellulose
acetate and
medium chain length polyhydroxyalkanotes with different
molar
concentration of PHB is presented. The films were prepared
by polymeric
solutions diluted in dimethil ketone with continued
agitation. The solvent
evaporation occurs on a glass plate in controlled
atmosphere of 300 C.
Eight samples were prepared: pure AcC and PHAmcl and
mixtures with
PHAmcl bulk concentrations in the range of 2 to 12 percent
(w/v).
Differential
scanning calorimetry and dynamic mechanical analysis
measurements
were performed in order to know the samples miscibility.
The surface
chemical composition of the samples was characterized by X-
ray
photoelectron spectroscopy (XPS). The morphology and
mechanical
properties were studied by atomic force microscopy (AFM).
PHAmcl
surface enrichment and morphology modification of the
films were
observed on the whole surface with the increasing of
PHAmcl. A decrease
in the films hardness was observed for increasing PHAmcl
bulk
concentration. The films were found to be miscible until
10percentPHAmcl/90percentAcC bulk concentration.
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