A bio-based adhesive composed of polyelectrolyte complexes of lignosulfonate and cationic polyelectrolytes
A bio-based adhesive composed of polyelectrolyte complexes of lignosulfonate and cationic polyelectrolytes
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DOI：
10.1080/02773813.2020.1722701
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发表时间：
2020-02-13
影响因子：
2
通讯作者：
Fukuoka, Tokuma
中科院分区：
文献类型：
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作者：
Ushimaru, Kazunori;Morita, Tomotake;Fukuoka, Tokuma
由木质素磺酸盐和阳离子聚电解质组成的聚电解质复合物被用作生物基粘合剂。将木质素磺酸钠（L-SO 3 Na）与3种阳离子聚电解质复合，研究了复合物在不同基材上的粘接强度。与非极性基材（聚丙烯）相比，观察到极性基材（不锈钢、铝和木材）具有更高的粘合强度。复合物L-SO_3 Na/聚烯丙胺和L-SO_3 Na/ε-聚赖氨酸对铝和木材的粘合强度高于其他三种无机复合物。此外，我们的粘合剂不需要任何额外的化学试剂，如有机溶剂、交联剂或缩合剂。L-SO 3 Na/ε-聚-L-赖氨酸复合物是一种强力且完全可生物降解的粘合剂。这项研究表明，使用木质素磺酸盐在低毒性，可持续发展，可生物降解的粘合剂具有优异的粘合强度的发展。
Polyelectrolyte complexes composed of lignosulfonate and cationic polyelectrolytes were used as bio-based adhesives. Sodium lignosulfonate (L-SO3Na), a wood-derived anionic polyelectrolyte, was combined with three different cationic polyelectrolytes and the adhesive strength of the resulting complexes was evaluated on various substrates. Higher adhesive strength was observed with polar substrates (stainless steel, aluminum, and wood) compared to a nonpolar substrate (polypropylene). Complexes L-SO3Na/poly(allylamine) and L-SO3Na/epsilon-poly-l-lysine exhibited higher adhesive strength than the other polyelectrolyte complexes on aluminum and a commercial polyvinyl acetate adhesive on wood. In addition, our adhesives do not require any additional chemical reagents, such as organic solvents, crosslinkers, or condensation agents. The L-SO3Na/epsilon-poly-l-lysine complex is a strong and completely biodegradable adhesive. This study demonstrates the use of lignosulfonate in the development of low-toxicity, sustainable, and biodegradable adhesives with excellent adhesive strength.