Adding value to lignins isolated from sugarcane bagasse and Miscanthus

被引：55

作者：

da Silva, C. G. ^{[1
,2
,3
]}

Grelier, S. ^{[2
,3
]}

Pichavant, F. ^{[2
,3
]}

Frollini, E. ^{[1
]}

Castellan, A. ^{[2
,3
]}

机构：

[1] Univ Sao Paulo, Inst Chem Sao Carlos, Macromol Mat & Lignocellulos Fibers Grp, CP 780, BR-13560970 Sao Carlos, SP, Brazil

[2] Univ Bordeaux, LCPO, UMR 5629, F-33600 Pessac, France

[3] CNRS, LCPO, UMR 5629, F-33600 Pessac, France

来源：

INDUSTRIAL CROPS AND PRODUCTS | 2013年 / 42卷

基金：

巴西圣保罗研究基金会;

关键词：

Sugarcane bagasse; Miscanthus; Organosolv lignin; Depolymerization; Anthraquinone; Lignophenolic resin; Composites; P-31 NMR ANALYSIS; SISAL FIBERS; X GIGANTEUS; DELIGNIFICATION; COMPOSITES; REAGENT;

D O I：

10.1016/j.indcrop.2012.04.040

中图分类号：

S2 [农业工程];

学科分类号：

082806 [农业信息与电气工程];

摘要：

Attempt to depolymerize industrial organosolv lignin (from sugarcane bagasse) and lignins extracted from sugarcane bagasse and Miscanthus fibers (isolated by a soda/anthraquinone process) in presence of an anthraquinone acid catalyst (AQCOOH) was described. With the aim to substitute formaldehyde by glutaraldehyde, a dialdehyde that can be obtained from natural sources, lignins were reacted with glutaraldehyde and studied as phenolic-type resins for thermosets. The reactions were predominantly analyzed be SEC and P-31 NMR spectrometry. The Organosolv lignin-glutaraldehyde resin was used to prepare a composite reinforced with sugarcane bagasse fibers. Control samples were also prepared; specifically, composites based on phenol-formaldehyde and organosolv lignin-formaldehyde matrices. The results of the impact and the flexural strength tests of these composites showed that the organosolv lignin and glutaraldehyde can successfully replace phenol and formaldehyde, respectively. (C) 2012 Elsevier B.V. All rights reserved.

引用

页码：87 / 95

页数：9

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