Biodegradation of Poly (Butylene Succinate) (PBS)/Stearate Modified Magnesium-Aluminium Layered Double Hydroxide Composites under Marine Conditions Prepared via Melt Compounding

• Published in: Molecules (Basel, Switzerland) Vol. 25; no. 23; p. 5766
• Main Authors: Shaiju, Parameswaran, Dorian, Benamor-Bois, Senthamaraikannan, Ramsankar, Padamati, Ramesh Babu
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 07.12.2020; MDPI
• Subjects: Alkenes - chemistry; Aluminum; Aluminum - chemistry; Biodegradation; Biodegradation, Environmental; Chemical Phenomena; Clay; Composite materials; composites; Hydroxides - chemistry; layered double hydroxide; Magnesium; Magnesium - chemistry; marine conditions; Mechanical Phenomena; Mechanical properties; Microorganisms; Nanocomposites; Nanocomposites - chemistry; Oceans and Seas; Physical characteristics; polybutylene succinate; Polybutylenes; Polymers; Scanning electron microscopy; Seawater; Spectrum Analysis; Stearates - chemistry; Succinates - chemistry; Thermal degradation; Thermal stability; composites; polybutylene succinate; biodegradation; layered double hydroxide; marine conditions
• ISSN: 1420-3049; 1420-3049
• DOI: 10.3390/molecules25235766

In the present work, polybutylene succinate (PBS)/stearate modified magnesium-aluminium layered double hydroxide (St-Mg-Al LDH) composites were prepared via melt processing and the effect of different loadings of St-Mg-Al LDH on the degradation behaviour of PBS under marine conditions was investigated. The morphological, mechanical and thermal characteristics of the composites were studied using different characterisation techniques. Optical imaging and scanning electron microscopy revealed that the incorporation of St-Mg-Al LDH accelerates the degradation of PBS along with the activity of microorganisms adhered to the composite films. PBS/St-Mg-Al LDH composites are found to have lower thermal degradation temperatures than those of pure PBS. The decrease in thermal stability is correlated with the degradation of PBS due to the catalytic action Mg and Al present in LDH. Tensile and DMA analysis revealed that the addition of St-Mg-Al LDH did not have a significant impact on the mechanical properties of PBS.