کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7789353 | 1500636 | 2015 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Engineered pigments based on iridescent cellulose nanocrystal films
ترجمه فارسی عنوان
رنگدانه های مهندسی بر اساس فیلم های نانوکریستال سلولز پر زرق و برق
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کلمات کلیدی
نانوسلولوز، نانوکریستالهای سلولز، ایریدسنس، سنگ زنی رنگدانه،
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
A simple method to produce biobased iridescent pigments from cellulose nanocrystal (CNC) films is reported. The process consists of forming nanostructured films from a CNC liquid-crystalline suspension and an appropriate dry grinding. The features of the iridescent pigments are described; they have a flake-like morphology with a thickness of 25 μm. However, because of the presence of sulfate groups, thermal degradation and high redispersion in water occur, which affect the iridescent property of these biobased pigments. To overcome such limitations, two post-treatments are proposed. The sulfate ester groups are removed from the iridescent pigments with vacuum overdrying. The mass loss of iridescent pigment in water is reduced with an increase of the ionic strength in the aqueous medium by NaCl addition. These post-treatments have proven to be efficient and engineered pigments based on CNC films can be used to add anticounterfeiting features to packaging manufactured by classical paper techniques or extrusion.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 122, 20 May 2015, Pages 367-375
Journal: Carbohydrate Polymers - Volume 122, 20 May 2015, Pages 367-375
نویسندگان
Raphael Bardet, Francine Roussel, Stéphane Coindeau, Naceur Belgacem, Julien Bras,