Preparation of Lignin-Based Phenolic Foam with Excellent Performance Based on Hydroxymethylation of Lignosulfonate and Paraformaldehyde. - Xu, Zhongbin; Song, Shushan; Zhen, Xiang; Al-Haimi, Akram Ali Nasser Mansoor; Wang, Zhongming; Tian, Guocai (Polymers (20734360), 2026)