Topochemical and morphological characterization of wood cell wall treated with the ionic liquid, 1-ethylpyridinium bromide
Topochemical and morphological characterization of wood cell wall treated with the ionic liquid, 1-ethylpyridinium bromide
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DOI：
10.1007/s00425-014-2235-7
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发表时间：
2015-09-01
期刊：
影响因子：
4.3
通讯作者：
Miyafuji, Hisashi
中科院分区：
文献类型：
--
作者：
Kanbayashi, Toru;Miyafuji, Hisashi
[EtPy][Br]对木质素的反应比对木材细胞壁中PSs的反应更强烈，[EtPy][Br]处理导致细胞壁超微结构和化学成分的不均匀变化。从形态学和拓扑化学的角度研究了离子液体1-乙基溴化吡啶（[EtPy][Br]）对杉木（Cryptomeria japonica）木材细胞壁的影响，该离子液体更倾向于与木质素而不是纤维素反应。[EtPy][Br]处理诱导细胞壁肿胀，消除疣，并在气管中形成无数毛孔。然而，许多坑膜和纤维素晶体结构保持不变。拉曼显微镜分析表明，不同层间细胞壁的化学变化是不同的，化合物中间薄片和细胞角的木质素抵抗与[EtPy][Br]的相互作用。此外，[EtPy][Br]与木材细胞壁的相互作用不同于其他类型的离子液体。
[EtPy][Br] is more reactive toward lignin than toward the PSs in wood cell walls, and [EtPy][Br] treatment results in inhomogenous changes to the cell wall's ultrastructural and chemical components.The effects of the ionic liquid 1-ethylpyridinium bromide ([EtPy][Br]), which prefers to react with lignin rather than cellulose on the wood cell walls of Japanese cedar (Cryptomeria japonica), were investigated from a morphology and topochemistry point of view. The [EtPy][Br] treatment induced cell wall swelling, the elimination of warts, and the formation of countless pores in the tracheids. However, many of the pit membranes and the cellulose crystalline structure remained unchanged. Raman microscopic analyses revealed that chemical changes in the cell walls were different for different layers and that the lignin in the compound middle lamella and the cell corner resists interaction with [EtPy][Br]. Additionally, the interaction of [EtPy][Br] with the wood cell wall is different to that of other types of ionic liquid.