Produção Nacional
Revisado por pares
Study of C─H⋯O Bond of Organic–Inorganic Hybrids Based on Polyhydroxybutyrate and Oxides Obtained Via an In Situ Sol–Gel Route
2020; Wiley; Volume: 60; Issue: 4 Linguagem: Inglês
10.1002/pen.25325
ISSN1548-2634
AutoresAnna Lecticia Martinez Martinez Toledo, Elton Jorge da Rocha Rodrigues, José Carlos Dutra Filho, Domethila Mariano de Souza Aguiar dos Santos, Suelen Adriani Marques, Maria Inês Bruno Tavares,
Tópico(s)Polymer crystallization and properties
ResumoSol–gel‐based zirconia (ZrO 2 ) and silica (SiO 2 ) were obtained in situ via hydrolysis–polycondensation of metal alkoxide precursors in membranes of poly(3‐hydroxybutyrate) (PHB). What followed was an assessment of thermal and spectroscopic effects from the insertion of the inorganic network in the PHB matrix. The findings exhibited a dependence of both the concentration and the chemical nature of the precursor on the properties of the as‐formed inorganic–organic hybrids. The results also indicated that positive nucleating effects, a reduction of the crystallite size and a variation in thermal transitions correlate with spectroscopic data from the alpha and beta crystal forms of the PHB matrix, as well as the crystallization data obtained through polarized light microscopy. POLYM. ENG. SCI., 60:673–681, 2020. © 2020 Society of Plastics Engineers
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