Nanocomposites from β-Pinene and α-Pinene Copolymer: Synthesis, Characterization, and Antioxidant Evaluation

Area of Science:

• Polymer Chemistry
• Materials Science
• Nanotechnology

Background:

• Traditional synthesis methods for copolymers and nanocomposites can be complex and costly.
• There is a growing need for sustainable and efficient methods to produce advanced polymer materials.

Purpose of the Study:

• To develop a novel, straightforward, and eco-friendly approach for synthesizing α- and β-pinene-based copolymers and nanocomposites.
• To characterize the structural, morphological, and thermal properties of the synthesized materials.
• To evaluate the antioxidant activity of the developed nanocomposites.

Main Methods:

• Cationic copolymerization of α- and β-pinene using AlCl3 catalyst.
• Ultrasound-assisted synthesis of nanocomposites with varying nano-clay concentrations (2-10% by weight).
• Characterization using FT-IR, 1H-NMR, DSC, GPC, XRD, SEM, TEM, and TGA.

Main Results:

• Successful synthesis of α-co-β-P copolymer (Mw ~4500 g/mol) and nanocomposites.
• Nanocomposites exhibited improved thermal stability compared to the pure copolymer.
• Evidence of uniform nano-clay dispersion and chemical modification within the polymer matrix, with exfoliated structures at 2% clay loading.
• Significant antioxidant potential demonstrated by the nanocomposites against DPPH free-radicals.

Conclusions:

• A rapid and cost-effective method for synthesizing pinene-based copolymers and nanocomposites has been established.
• The synthesized nanocomposites possess enhanced thermal properties and potent antioxidant activity.
• The findings suggest potential applications for these novel materials in areas requiring antioxidant protection and thermal stability.