Isolation and characterization of herbaceous lignins for applications in biomaterials

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DOIResolve DOI: http://doi.org/10.1016/j.indcrop.2012.04.049
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TypeArticle
Journal titleIndustrial Crops and Products
Volume41
Pages356364; # of pages: 9
SubjectHerbaceous lignin; microwave; functional groups; molecular weight; thermal stability; biomaterials
AbstractThe imminent industrial production of cellulosic ethanol from annual plants will generate massive amounts of herbaceous lignins that will have to be valorized. However, the chemical and physical properties of herbaceous lignins are much less known than those of wood lignins. In the present study, organosolv lignins were extracted from wheat, triticale, corn, flax, and hemp residues using microwave irradiation under similar conditions. The extracted lignins were extensively analyzed by FT-IR, ³¹P NMR, gel permeation chromatography, thermogravimetric analysis, and elemental and carbohydrate analysis to determine their applicability in polymers. All lignins were of high purity with low sugar, sulfur, and ash content. Corn, hemp, and flax lignins were found to contain high concentrations of non-methoxylated phenolic groups, syringyl phenolic groups, and aliphatic OH groups, respectively, making them promising candidates for production of phenolic resins, stabilization of polyolefins, and polyurethane synthesis, respectively. Triticale or wheat lignins were less specific, with a balanced content of OH groups, which makes them applicable to polyester synthesis.
Publication date
LanguageEnglish
AffiliationNational Research Council Canada; Aquatic and Crop Resource Development; NRC Biotechnology Research Institute; Energy, Mining and Environment
Peer reviewedYes
NRC number53418
NPARC number21268169
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Record identifier037ec80d-beec-4a8d-a705-5342b289d961
Record created2013-05-16
Record modified2016-05-09
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