کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4512892 1624839 2015 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
In-situ evaluation of flax fibre degradation during water ageing
ترجمه فارسی عنوان
ارزیابی موضعی تخریب فیبر کتان در هنگام پیری آب
کلمات کلیدی
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
چکیده انگلیسی


• Single flax fibre stiffness evolution during two month immersion by nanoindentation.
• Degradation mechanism is evaluated by SEM observation combined with sugar analysis.
• Fibre stiffness reduction is due to dissolution of polysaccharides such as pectins.

The lifetime of a plant fibre biocomposite in an aggressive environment is highly influenced by the evolution of the properties of its components (fibre, matrix and interface) during ageing. This article aims to estimate the evolution of flax fibre stiffness during two months immersion of a flax/PLLA biocomposite in water, using in-situ measurements involving nanoindentation. The evolution of the nanoindentation modulus is found to be correlated with water uptake. In addition, the degradation mechanism is assessed using biochemical analyses such as total sugar and uronic acid and also by SEM observations.Fibre stiffness reduction can be primarily explained by fibre cracking induced by differential swelling between internal cell-wall layers (S1-S2-S3) and between components within each cell-wall layer. A supplementary mechanism is the dissolution of fibre polysaccharides such as pectins that could ensure load transfer between cellulose microfibrils within the S2 Layer.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Industrial Crops and Products - Volume 70, August 2015, Pages 204–210
نویسندگان
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