Morrison W H, Himmelsbach D S, Akin D E, Evans J D
R. B. Russell Agricultural Research Center, US Dept. of Agriculture/ARS, P. O. Box 5677, Athens, GA 30604, USA.
J Agric Food Chem. 2003 Apr 23;51(9):2565-8. doi: 10.1021/jf020885t.
The chemistry of pure flax fibers, free of contaminating nonfiber components, has not been determined. Fibers from the center sections of the stem of seed and fiber flax (Linum usitatissium L.), which had been retted after soaking in water and removal of the epidermis by hand, underwent chemical and spectroscopic analysis. Wet chemical analysis showed only trace indications of aromatics and no long chain fatty acids or alcohols in fibers. Pyrolysis mass spectroscopy (PyMS) and pyrolysis gas chromatography mass spectrometry (PyGCMS) showed only trace amounts of aromatic constituents that could be attributed to the presence of lignin. Mid-infrared (Mid-IR) and Raman spectroscopy of these fibers showed no aromatic compounds present. This study suggests that earlier work reporting the presence of lignin ranging from 1 to 4% may be the result of residual shive or epidermis/cuticle material remaining after the retting process which may be responsible for the favorable properties desired by the composites industry.
尚未确定不含污染性非纤维成分的纯亚麻纤维的化学组成。对籽用亚麻和纤维用亚麻（亚麻属植物亚麻）茎部中心部分的纤维进行了化学和光谱分析，这些纤维在水中浸泡并手工去除表皮后进行了沤麻处理。湿化学分析表明，纤维中仅存在痕量芳烃迹象，不存在长链脂肪酸或醇类。热解质谱（PyMS）和热解气相色谱 - 质谱联用（PyGCMS）显示，仅存在痕量可归因于木质素存在的芳香族成分。这些纤维的中红外（Mid - IR）和拉曼光谱表明不存在芳香族化合物。本研究表明，早期报道木质素含量在1%至4%之间的研究结果，可能是沤麻过程后残留的木髓或表皮/角质层物质导致的，这些残留物质可能是复合材料行业所期望的良好性能的原因。
