Structural impact of hydroxyvalerate in polyhydroxyalkanoates (PHAscl) dense film monitored by XPS and photothermal methods

Journal of the Brazilian Chemical Society

Marcelo G. Da Silva²  Helion Vargas²  Luiz H. Poley¹  Ruben S. Rodriguez¹  Gilson B. Baptista¹ 

[1] ,Universidade Estadual do Norte Fluminense Laboratório de Ciências Físicas Campos dos Goytacazes RJ ,Brazil

关键词: polymers;    photoacoustics;    XPS;    thermal properties;   

DOI  :  10.1590/S0103-50532005000500017

来源: SciELO

【 摘 要 】

Poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) polymer dense films with thickness of 90 µm were obtained by the casting method and characterized using X-ray photoelectron spectroscopy, differential scanning calorimetric and photo-thermal methods. The HV molar fractions in the copolymer structure were 8, 14 and 22 mol %. The measured specific thermal capacity and the glass transition temperature of the P3(HB-co-x%HV) decrease for increasing hydroxyvalerate content following a similar trend.

【 授权许可】

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