波谱学杂志2017，Vol.34Issue(1)：108-114,7.DOI:10.11938/cjmr20170113
利用低温NMR技术测定木材及其热处理材纤维饱和点
Determination of Treated and Control Wood on Fiber Saturation Point by Low-Field NMR Technology
摘要
Abstract
Due to its non-destructive characteristic, nuclear magnetic resonance (NMR) spectroscopy was used to study the fiber saturation point (FSP) of Pseudotsuga menziesii before and after heat treatment. The bound water amount in saturated wood cell wall was determined by analysis of T2 relaxation time distributions measured using GPMG (Carr-Purcell-Meiboom-Gill) sequence at -3 ℃ and 25 ℃. Results showed that the FSP of Pseudotsuga menziesii treated with various temperatures are 32.82% (180 ℃), 29.40% (200 ℃), 24.90% (220 ℃) and 38.76% (untreated), which indicate that FSP of Pseudotsuga menziesii decreases with increased heat treatment temperature. This study reflects that NMR could provide detailed information about wood water distribution rapidly and efficiently.关键词
核磁共振(NMR)/热处理/纤维饱和点(FSP)/横向弛豫时间(T2)Key words
nuclear magnetic resonance (NMR)/heat treatment/fiber saturation point (FSP)/T2 relaxation time分类
数理科学引用本文复制引用
周凡丁,高鑫,蔡家斌,庄寿增,周洪杰..利用低温NMR技术测定木材及其热处理材纤维饱和点[J].波谱学杂志,2017,34(1):108-114,7.基金项目
江苏高校优势学科建设工程资助项目(PAPD). （PAPD）
