Bound Water Content in Saturated Wood Cell Wall Determined by Nuclear Magnetic Resonance Spectroscopy

doi:10.11938/cjmr20150412

Chinese Journal of Magnetic Resonance ›› 2015, Vol. 32 ›› Issue (4): 670-677.doi: 10.11938/cjmr20150412

Previous Articles Next Articles

Bound Water Content in Saturated Wood Cell Wall Determined by Nuclear Magnetic Resonance Spectroscopy

GAO Xin， ZHUANG Shou-zeng*

College of Material Science and Engineering, Nanjing Forestry University, Nanjing 210037, China

Received:2015-04-20 Revised:2015-10-22 Online:2015-12-05 Published:2015-12-05
About author:*Corresponding author： ZHUANG Shou-zeng, Tel: +86-25-85427058, E-mail: szzhuang@njfu.edu.cn.
Supported by:
国家自然科学基金资助项目(30771677)，江苏省研究生培养创新工程资助项目(CXZZ13_0543)

Abstract

Abstract:

¹H spin-spin relaxation time (T₂) of water in 5 species of wood was measured by nuclear magnetic resonance (NMR) spectroscopy at room temperature and -3℃, which is thought to be related to the anatomical structure of the wood. The bound water content within swollen cell wall was determined by comparison of the inversion peak area before and after frozen treatment: Pinus sylvestris 38.3%, Cunninghamia lanceolata 38.5%, Populus sp. 36.0%, Fraxinus excelsior L. 35.6% and Ochroma pyramidale 47.6%. The bound water contents determined by NMR spectroscopy were apparently higher than those obtained by the conventional extrapolation methods, but similar to the results obtained by the solute exclusion method, porous plate method, centrifugal dewatering method. It is concluded that NMR may provide a rapid and non-destructive way to determine bound water content in wood.

Key words: nuclear magnetic resonance(NMR), bound water content, spin-spin relaxation time, wood, cell wall

CLC Number:

O482.53

GAO Xin， ZHUANG Shou-zeng*. Bound Water Content in Saturated Wood Cell Wall Determined by Nuclear Magnetic Resonance Spectroscopy
[J]. Chinese Journal of Magnetic Resonance, 2015, 32(4): 670-677.

References

[1] Liu Yi-xing(刘一星), Zhao Guang-jie(赵广杰). Wood Resource Materials(木质资源材料学)[M]. Beijing(北京): China Forestry Press(中国林业出版社), 2004.

[2] Gu Lian-bai(顾炼百). Wood Processing Technology(木材加工工艺学)[M]. Beijing(北京): China Forestry Press(中国林业出版社), 2003.

[3] John C F. Primary Wood Processing[M]. Netherlands: Springer, 2006.

[4] Babiak M, Kudela J. A contribution to the definition of the fiber saturation point[J]. Wood Sci Technol, 1995, 29(3): 217－226.

[5] Feist W C, Tarkow H. A new procedure for measuring fiber saturation points[J]. For Prod J, 1967, 17(10): 65－68.

[6] Cloutier A, Fortin Y. Moisture content-water potential relationship of wood from saturated to dry conditions[J]. Wood Sci Technol, 1991, 25(4): 263－280.

[7] Cloutier A, Tremblay C, Fortin Y. Effect of specimen structural orientation on the moisture content-water potential relationship of wood[J]. Wood Sci Technol, 1995, 29(4): 235－242.

[8] Choong E T, Tesoro F O. Relationship of capillary pressure and water saturation in wood[J]. Wood Sci Technol, 1989, 23(2): 139－150.

[9] Hill C A S. Wood Modification: Chemical, Thermal and Other Processes[M]. Chichester: Wiley, 2006.

[10] Telkki V V, Yliniemi M, Jokisaari J. Moisture in softwoods: fiber saturation point, hydroxyl site content, and the amount of micropores as determined from NMR relaxation time distributions[J]. Holzforschung, 2013, 67(3): 291－300.

[11] Araujo C D, MacKay A L, Hailey J R T, et al. Proton magnetic resonance techniques for characterization of water in wood: application to white spruce[J]. Wood Sci Technol, 1992, 26(2): 101－113.

[12] Hartley I D, Stavros A, MacKay A L. ¹H NMR studies of water interactions in sitka spruce and western hemlock: moisture content determination and second moments[J]. Wood Sci Technol, 1996, 30(2): 141－148.

[13] Nicole L, Bernard D J, Lartigue J C, et al. Moisture content and extractive materials in Maritime pine wood by low field ¹H NMR[J]. Holzforschung, 2002, 56(1): 25－31.

[14] Almeida G, Gagné S, Hernández R E. A NMR study of water distribution in hardwoods at several equilibrium moisture contents[J]. Wood Sci Technol, 2007, 41(4): 293－307.

[15] Ma Da-yan(马大燕), Wang Xi-ming(王喜明), Zhang Ming-hui(张明辉). Mechanism of water sorption during adsorption process of wood studied by NMR(核磁共振研究木材吸着过程水分吸附机理)[J]. Chinese J of Magn Reson(波谱学杂志), 2011, 28(1): 135－141.

[16] Zauer M, Kretzschmar J, Groβmann L, et al. Analysis of the pore -size distribution and fiber saturation point of native and thermally modified wood using differenttial scanning calorimetry[J]. Wood Sci Technol, 2014, 48(1): 177－193.

[17] Cheng Jun-qing(成俊卿). Wood Science(木材学)[M]. Beijing(北京): China Forestry Press(中国林业出版社), 1985.

Bound Water Content in Saturated Wood Cell Wall Determined by Nuclear Magnetic Resonance Spectroscopy

PDF (PC)

Knowledge

Abstract

Cite this article

share this article

References

Related Articles 5

Recommended Articles

Metrics

Comments

[1]	YU Deng-jie, GUO Pan, WU Jia-min, HE Yu-cheng, XU Zheng. A Unilateral Nuclear Magnetic Resonance Sensor for Nondestructive Wood Moisture Measurements [J]. Chinese Journal of Magnetic Resonance, 2017, 34(4): 508-518.
[2]	GAO Yu-lei, ZHANG Ming-hui. Moisture Sorption in Wood Studied by Time Domain Nuclear Magnetic Resonance [J]. Chinese Journal of Magnetic Resonance, 2016, 33(2): 295-304.
[3]	ZHOU Yun-jie， ZHANG Ming-hui， LI Xin-yu， SHAO Zhu-wei. Water Absorption in Wood-Based Panel Observed by Dynamic* Time-Domain Nuclear Magnetic Resonance Spectroscopy [J]. Chinese Journal of Magnetic Resonance, 2015, 32(4): 661-669.
[4]	DU Yuan-Yuan, JI Zhu-Sheng, LIU Mai-Li. Effects of NMR Parameters on Study of Individual Variations of Plasma-Ibuprofen Interactions [J]. Chinese Journal of Magnetic Resonance, 2012, 29(2): 216-223.
[5]	ZHOU Juan; ZHOU Min-xiong; LEI Du; SHANG Yun; JIANG Yu. The Design of a Data Exchange Method for Integrated Nuclear Magnetic Resonance Spectrometer [J]. Chinese Journal of Magnetic Resonance, 2009, 26(3): 343-350.