کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7785119 1500605 2016 33 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pectin impacts cellulose fibre architecture and hydrogel mechanics in the absence of calcium
ترجمه فارسی عنوان
پکتین در صورت عدم وجود کلسیم، معماری فیبر سلولی و مکانیک هیدروژل را تحت تاثیر قرار می دهد
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
Pectin is a major polysaccharide in many plant cell walls and recent advances indicate that its role in wall mechanics is more important than previously thought. In this work cellulose hydrogels were synthesised in pectin solutions, as a biomimetic tool to investigate the influence of pectin on cellulose assembly and hydrogel mechanical properties. Most of the pectin (60-80%) did not interact at the molecular level with cellulose, as judged by small angle scattering techniques (SAXS and SANS). Despite the lack of strong interactions with cellulose, this pectin fraction impacted the mechanical properties of the hydrogels through poroelastic effects. The other 20-40% of pectin (containing neutral sugar sidechains) was able to interact intimately with cellulose microfibrils at the point of assembly. These results support the need to revise the role of pectin in cell wall architecture and mechanics, and; furthermore they assist the design of cellulose-based products through controlling the viscoelasticity of the fluid phase.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 153, 20 November 2016, Pages 236-245
نویسندگان
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