REFLECTANCE UV-VIS AND UV RESONANCE RAMAN SPECTROSCOPY IN CHARACTERIZATION OF KRAFT PULPS

被引：0

作者：

Lahdetie, Anni ^{[1
]}

Liitia, Tiina ^{[2
]}

Tamminen, Tarja ^{[2
]}

Jaaskelainen, Anna-Stiina ^{[1
]}

机构：

[1] Helsinki Univ Technol, Dept Forest Prod Technol, TKK, Espoo 02015, Finland

[2] VTT, Espoo 02044, Finland

来源：

BIORESOURCES | 2009年 / 4卷 / 04期

基金：

芬兰科学院;

关键词：

Bleaching; Kraft pulps; UV resonance Raman (UVRR) spectroscopy; UV-Vis spectroscopy; PHENOLIC HYDROXYL-GROUPS; HEXENURONIC ACID; RESIDUAL LIGNIN; WOOD; QUANTIFICATION; CALIBRATION;

D O I：

暂无

中图分类号：

TB3 [工程材料学]; TS [轻工业、手工业、生活服务业];

学科分类号：

0805 ; 080502 ; 0822 ;

摘要：

Reflectance UV-Vis spectroscopy and UV resonance Raman (UVRR) spectroscopy are both nondestructive techniques that are applicable to study trace concentrations of lignin in-situ. In this study, unbleached and bleached softwood kraft pulps were analyzed by reflectance UV-Vis (k/s) and UVRR spectroscopy to follow lignin and hexenuronic acid ( HexA) contents and structural changes in residual lignin. The height of the lignin band in the UV-Vis spectra (280 nm) correlated well with the lignin band in the UVRR spectra (1605 cm(-1)) for semi- or fully-bleached pulps. However, the correlation was much weaker for unbleached pulps. Also the results for hexenuronic acid content by UV-Vis (240 nm) and UVRR (1658 cm(-1)) methods correlated well for most of the pulps, but for unbleached or peroxide-bleached samples the interference from other structures affecting these bands was obvious.

引用

页码：1600 / 1619

页数：20

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