Chinese Journal of Magnetic Resonance ›› 2015, Vol. 32 ›› Issue (4): 661-669.doi: 10.11938/cjmr20150411

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Water Absorption in Wood-Based Panel Observed by Dynamic Time-Domain Nuclear Magnetic Resonance Spectroscopy

ZHOU Yun-jieZHANG Ming-hui*LI Xin-yuSHAO Zhu-wei
  

  1. College of Material Science and Art Design, Inner Mongolia Agricultural University, Hohhot 010018, China
  • Received:2014-12-24 Revised:2015-10-23 Online:2015-12-05 Published:2015-12-05
  • About author:*Corresponding author: ZHANG Ming-hui, Tel: +86-15849376426, E-mail: zhangmh_email@aliyun.com
  • Supported by:

    国家自然科学基金资助项目(30800866, 31160141)

Abstract:

Time-domain nuclear magnetic resonance (TD-NMR) technology may provide a new method to study water absorption in wood-based panels. We measured changes of free induction decay (FID) signal of water in plywood, particle board and medium density fiberboard after a 24-hour soaking process, and the results were correlated to water contents calculated with the traditional weighing method. The amount of water absorption was plywood > particleboard > medium density fiberboard. The state of water in the panels was analyzed by spin-spin relaxation time (T2) measurements. The result suggested that NMR is an effective tool to study the relationship between wood-based panels and water.

Key words: time-domain nuclear magnetic resonance, water absorption, free induction decay, spin-spin relaxation time, wood-based panel

CLC Number: