Poly(vinyl alcohol) (PVA) is a promising biodegradable polymer; however, its reliance on petroleum and incompatibility with raw lignin additives hinder sustainable PVA composite development. In this study, mechanically robust PVA/functionalized acid-soluble lignin (fLGAS) composite films were developed by means of aqueous solution casting without toxic chemical crosslinkers. Commercial kraft lignin was enzymatically modified using laccase from Coriolopsis spp., improving its compatibility with the PVA matrix. Molecular characterization confirmed the formation of an intermolecular hydrogen-bonding network between PVA and fLGAS, which significantly enhanced the thermal stability of the composites. Additionally, this network improved moisture response, achieving complete surface wetting (water contact angle decreasing from 47.04° to 0°) and swelling ratios exceeding 250% after 2 h. Nanoindentation and dynamic mechanical analysis characterizations revealed that mechanical properties enhanced with fLGAS loading up to 5 wt%, while the overall properties were governed by the balance between hydrogen bonding and crystallinity. This work provides an eco-friendly framework for industrial lignin valorization and sustainable functional film design.
The growing electric vehicle (EV) industry necessitates sustainable material solutions to reduce reliance on petroleum-based plastics. This study investigates lignin-reinforced polylactic acid (PLA) biocomposites for sustainable EV components, focusing on rearview mirror covers. Alkaline lignin (AL) and sodium lignosul...
M. Narasingha, S. Sunar, Suchata Kirdponpattara et al.· Polymers· 0 citations
While bio-based hydrogels derived from lignin and chitosan are promising sustainable adsorbents, their practical application is hindered by poor mechanical stability. This study addresses this limitation by synthesizing lignin-chitosan hydrogels using vanillin as a green, bio-derived crosslinker via a facile solution-c...
Moses Ayitey-Adjin, Mohammad Jahid Hasan, Jeremy Erb et al.· Polymer Bulletin· 0 citations
The development of biodegradable polymer‐based packaging materials with tunable performance has gained significant attention as a sustainable alternative to conventional plastics. In this study, polyvinyl alcohol (PVA)/carboxymethyl cellulose (CMC) composite films were prepared and modified using two environmentall...
S. Gowayed, Ahmed H. Abdel-Salam, A. Mohamed et al.· Polymer Engineering & Sc...· 0 citations
Replacing petroleum-derived polyols with lignin in polyurethane foams is essential for increasing renewable carbon utilization but is hindered by lignin’s heterogeneity, poor solubility, and limited reactivity. Here, we report a hydrogen-bond-engineered, eutectic-like polyol platform based on polyethylene glycol (PEG...
The development of renewable polymer networks combining mechanical performance with repairability and reprocessability is important for advancing sustainable materials. In this study, chitosan-dialdehyde lignin (Ch-DAL) bioplastic films were fabricated through dynamic Schiff base cross-linking between tartaric acid-pro...
R. Tuleyeva, N. Gizatullina, M. Mussalimova et al.· Materials· 0 citations
Starch films often exhibit poor filler-matrix compatibility when reinforced with natural plant powders, which limits their functional performance. In this study, honeysuckle flower powder was modified via stepwise oxalic acid treatment to enhance its interfacial adhesion with corn starch. The treatment progressively re...
Yue Zhang, Qi Zhang, Dong-Ying Song et al.· Food Chemistry· 0 citations
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