Organo-mediated ring-opening polymerization: A cutting-edge technique for green synthesis

Majeed, Adnan; Iqbal, Muhammad Adnan; Ali, Shahzaib; Kanwal, Rimsha; Zafar, Ayesha; Mushtaq, Zanira; Iram, Ghazala; Shahzadi, Anam; Abidin, Zain Ul; Haider, Mohammad Tauseef; Amara, Um E.; Yousif, Muhammad; Younas Bajwa, Muhammad Umer; Ahmad, Farhan

doi:10.1016/j.polymer.2024.127730

Polymer

2024

DOI: 10.1016/j.polymer.2024.127730

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Organo-mediated ring-opening polymerization: A cutting-edge technique for green synthesis

Adnan Majeed,

Muhammad Adnan Iqbal,

Shahzaib Ali

et al.

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Lignin Particle Size Affects the Properties of PLA Composites Prepared by In Situ Ring-Opening Polymerization

Makri,

Xanthopoulou,

Klonos

et al. 2024

Polymers

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The present work focuses on the synthesis and characterization of biobased lignin-poly(lactic) acid (PLA) composites. Organosolv lignin, extracted from beechwood, was used as a filler at 0.5, 1.0, and 2.5 wt% loadings, with ultrasonication reducing the lignin particle size to ~700 nm. The PLA–lignin composites were prepared via in situ ring-opening polymerization (ROP) of L-lactide in the presence of lignin. This method ensured uniform lignin dispersion in the PLA matrix due to grafting of PLA chains onto lignin particles, preventing aggregation. Strong polymer–filler interactions were confirmed through spectroscopic analysis (FTIR and XPS) and their effects on static and dynamic glass transitions (DSC). These interactions enhanced mechanical properties, including a two-fold increase in tensile strength and elongation at 1 wt% lignin. Crystallization was suppressed due to shorter PLA chains, and a 15% drop in dynamical fragility was observed via Broadband Dielectric Spectroscopy (BDS). Antioxidant activity improved significantly, with PLA–2.5% ultrasonicated organosolv lignin reducing DPPH• content to 7% after 8 h, while UV-blocking capability increased with lignin content.

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Lignin Particle Size Affects the Properties of PLA Composites Prepared by In Situ Ring-Opening Polymerization

Makri,

Xanthopoulou,

Klonos

et al. 2024

Polymers

View full text Add to dashboard Cite

show abstract

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Organo-mediated ring-opening polymerization: A cutting-edge technique for green synthesis

Cited by 1 publication

References 99 publications

Lignin Particle Size Affects the Properties of PLA Composites Prepared by In Situ Ring-Opening Polymerization

Lignin Particle Size Affects the Properties of PLA Composites Prepared by In Situ Ring-Opening Polymerization

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