Characterization of Poly(benzaldehyde-co-thiophene) and Poly(3-hydroxybutyrate-co-3-hydroxyvalerate) Blend: Structural, Thermal, and Morphological Properties
Hinane Baleh, Abdelkader Dehbi, Salah Bassaid, Lamia Kabir, Ali Alsalme, Giovanna Colucci, Massimo Messori
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引用次数: 0
Abstract
This study investigated the properties of a blend made from two copolymers: poly(benzaldehyde-co-thiophene) (PBT) and poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV). PBT was first synthesized via oxidative coupling of thiophene and benzaldehyde monomers. The synthesized PBT was then mixed with commercially available PHBV in a 50/50 ratio using solution casting. The X-ray diffraction revealed the amorphous nature of PBT and the semi-crystalline nature of PHBV. The Infrared spectroscopy confirmed the presence of both materials in the blend. UV–Vis analysis showed characteristic absorption peaks for both polymers: PBT displayed π–π* transitions and a π–π* transition related to its semiconducting properties, while PHBV exhibited peaks associated with the carbonyl group. The thermogravimetric analysis demonstrated the thermal stability of PBT compared to the degradability of PHBV. The differential scanning calorimetry revealed a decrease in the blend’s melting temperature and enthalpy of fusion compared to pure PHBV, indicating hindered crystallization in the blend. The scanning electron microscopy visualized the distinct morphologies of the two copolymers within the blend, suggesting their immiscibility.
期刊介绍:
Polymer Science, Series A is a journal published in collaboration with the Russian Academy of Sciences. Series A includes experimental and theoretical papers and reviews devoted to physicochemical studies of the structure and properties of polymers (6 issues a year). All journal series present original papers and reviews covering all fundamental aspects of macromolecular science. Contributions should be of marked novelty and interest for a broad readership. Articles may be written in English or Russian regardless of country and nationality of authors. All manuscripts are peer reviewed. Online submission via Internet to the Series A, B, and C is available at http://polymsci.ru.