Effect of enzymatic treatment of flax on fineness of fibers and mechanical performance of composites

被引：25

作者：

De Prez, Jana ^{[1
]}

Van Vuure, Aart Willem ^{[2
]}

Ivens, Jan ^{[3
]}

Aerts, Guido ^{[1
]}

Van de Voorde, Ilse ^{[1
]}

机构：

[1] Katholieke Univ Leuven, Dept Microbial & Mol Syst M2S, Lab Enzyme Fermentat & Brewing Technol EFBT, Cluster Bioengn Technol CBeT,Fac Engn Technol, Technol Campus Ghent,Gebroeders Smetstr 1, B-9000 Ghent, Belgium

[2] Katholieke Univ Leuven, Fac Engn Technol, Dept Mat Engn MTM, Technol Cluster Mat Technol, Campus Grp T,Andreas Vesaliusstr 13, B-3000 Leuven, Belgium

[3] Katholieke Univ Leuven, Fac Engn Technol, Dept Mat Engn MTM, Technol Cluster Mat Technol, Campus Nayer,Nayerlaan 5, B-2860 St Katelijne Waver, Belgium

来源：

COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2019年 / 123卷

关键词：

natural fibers; biocomposite; mechanical properties; Enzymatic treatment; TENSILE; BEHAVIOR; WATER; BIOCOMPOSITES;

D O I：

10.1016/j.compositesa.2019.05.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The application of enzymes as alternative to dew retting of flax was studied in correlation to the characteristics of composites reinforced with these natural fibers. Fiber fineness and mechanical properties of biocomposites were evaluated. Furthermore, moisture absorption by biocomposites was studied and fracture surfaces were investigated using Scanning Electron Microscopy. Compared to dew retted fiber composites, improvements in mechanical performance can be observed for composites impregnated with fibers extracted after enzymatic treatments. All enzymatic treatments resulted in finer fibers than green fibers and led to biocomposites with a reduced equilibrium moisture content and lower diffusion coefficient. This study illustrates the high potential of enzymatic retting, in particular with polygalacturonase. Also, the manual extraction procedure used, produced fibers with an E-modulus up to 84 GPa and strength up to 800 MPa, likely due to reduced fiber damage, which illustrates the hidden potential of flax fibers.

引用

页码：190 / 199

页数：10

共 52 条

[1] Optimization for enzyme-retting of flax with pectate lyase [J].