Chemistry and Spectroscopy of Renewable Materials, Part 1: Imaging the Penetration Depth of Covalent Wood Modification

被引:10
作者
Drafz, M. H. H. [1 ]
Franz, A. [3 ,4 ]
Namyslo, J. C. [1 ,2 ]
Kaufmann, D. E. [1 ,2 ]
机构
[1] Tech Univ Clausthal, Inst Organ Chem, D-38678 Clausthal Zellerfeld, Germany
[2] Tech Univ Clausthal, Clausthal Ctr Mat Technol, D-38678 Clausthal Zellerfeld, Germany
[3] Helmholtz Zentrum Berlin, Dept Crystallog, D-14109 Berlin, Germany
[4] Univ Leipzig, Inst Mineral Crystallog & Mat Sci, D-04109 Leipzig, Germany
关键词
Wood modification; Covalent fixation; Penetration depth; Anisotropy; Benzoylation; Estrification; Attenuated total reflection IR (ATR-IR); Micro-computed tomography (3D-mu CT);
D O I
10.1021/sc5008048
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
The covalent modification of pine sapwood by benzotriazolyl activated benzoic acids offers broad access to new, durable functional materials. The penetration depth of these substituted benzoic acids remained unknown so far. Two independent proofs were received for the first time by parallel 3D-mu CT imaging and attenuated total reflection infrared spectroscopy studies on approximately 10 X 10 x 10 mm wood cubes esterified with activated p-bromobenzoic acid. It proved feasible to penetrate pine sapwood anisotropically as deep as 4.5 (with the grain) to 0.75 mm (across the grain), depending on the orientation of the fibers. The results prove the usability of the applied modification procedure.
引用
收藏
页码:566 / 568
页数:3
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