核磁共振研究木材吸着过程中水分吸附机理

波谱学杂志 ›› 2011, Vol. 28 ›› Issue (1): 135-141.

核磁共振研究木材吸着过程中水分吸附机理

马大燕，王喜明，张明辉*

内蒙古农业大学材料科学与艺术设计学院，内蒙古呼和浩特 010018

收稿日期:2010-06-04 修回日期:2010-07-10 出版日期:2011-03-05 发布日期:2011-03-05
基金资助:
国家自然科学基金资助项目（30800866）.

Mechanism of Water Sorption during Adsorption Process of Wood Studied by NMR

MA Da-Yan, WANG Xi-Ming, ZHANG Ming-Hui*

College of Material Science and Art Design, Inner Mongolia Agricultural University, Huhhot 010018, China

Received:2010-06-04 Revised:2010-07-10 Online:2011-03-05 Published:2011-03-05
Supported by:
国家自然科学基金资助项目（30800866）.

摘要/Abstract

摘要：

核磁共振方法以质子(H)为探针，为研究木材与水分的关系提供了一个新的视角. 该文通过研究杨木在32 ℃恒温、相对湿度为98%恒湿环境下杨木吸着过程中质子的自旋-自旋弛豫时间T₂的变化，进而来分析木材吸着过程中水分的分布与迁移特性. 探测木材吸着过程中水分的迁移行为，为解释木材与水分的关系提供了一个有力的理论依据，同时从微观层面揭示木材吸着过程中水分的吸附机理，其水分吸附机理同样适用于食品等领域. 实验结果证实核磁共振是揭示木材与水分的复杂关系的一个有效的手段.

关键词: 核磁共振(NMR), 吸着, T₂, , 水分吸附机理

Abstract:

The changes of T₂ of water absorbed to wood in an environment of constant temperature of 32 ℃ and relative humidity of 98% was studied and used to reflect characteristics of water distribution and migration. The migration behavior of water molecules were used to explain the interactions between wood and water, and reveal the mechanism of water sorption at the microscopic level. The results of this study suggested that NMR is an effective tool to study the complex relationship between wood and water.

Key words: NMR, adsorption, T₂, water sorption

中图分类号:

S791

马大燕, 王喜明, 张明辉. 核磁共振研究木材吸着过程中水分吸附机理[J]. 波谱学杂志, 2011, 28(1): 135-141.

MA Da-Yan, WANG Xi-Ming, ZHANG Ming-Hui. Mechanism of Water Sorption during Adsorption Process of Wood Studied by NMR[J]. Chinese Journal of Magnetic Resonance, 2011, 28(1): 135-141.

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