Abstract Chitosan and its derivatives (grafted chitosan and chitosan nanoparticles) were used as bio-based adsorbents in urea-formaldehyde (UF) resins, and accordingly, their effects on the curing behavior, resin structure, crystalline structure, and formaldehyde emission (FE) of final resin has been investigated. Synthesis of grafted chitosan and chitosan nanoparticles was confirmed by FTIR spectroscopy. Characteristics of UF resins were monitored by 13C NMR and X-ray diffraction. This analysis showed that the free formaldehyde and crystallinity of UF resin having chitosan-based adsorbents were substantially reduced. The FE was largely decreased in the medium density fiberboard (MDF) containing chitosan nanoparticles (60%), followed by grafted chitosan (34%) and chitosan powder (22%). A FE class of F**** (

中文翻译：

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壳聚糖衍生物作为人造板生物吸附剂的甲醛吸附能力

摘要 壳聚糖及其衍生物（接枝壳聚糖和壳聚糖纳米颗粒）被用作脲醛（UF）树脂中的生物基吸附剂，因此，它们对固化行为、树脂结构、晶体结构和甲醛释放量（FE）的影响对最终树脂的影响进行了研究。FTIR 光谱证实了接枝壳聚糖和壳聚糖纳米颗粒的合成。通过 13C NMR 和 X 射线衍射监测 UF 树脂的特性。该分析表明，具有壳聚糖基吸附剂的超滤树脂的游离甲醛和结晶度显着降低。含有壳聚糖纳米颗粒 (60%) 的中密度纤维板 (MDF) 的 FE 大大降低，其次是接枝壳聚糖 (34%) 和壳聚糖粉末 (22%)。F**** 的 FE 类（