کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10128074 1645123 2018 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effect of structure features of polysaccharides on properties of dialdehyde polysaccharide tanning agent
ترجمه فارسی عنوان
اثر ویژگی های ساختاری پلی ساکارید بر خواص عامل پوست دلفریب دیلدهید
کلمات کلیدی
پلی ساکارید، کریستالی دی اتیلید پلی ساکارید، وزن مولکولی، برنزه کردن،
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
چکیده انگلیسی
Sodium alginate (SA), tara gum (TG), starch (ST) and cyclodextrin (CD) were oxidized to dialdehyde polysaccharides (DAPs) using equivalent sodium periodate. The effects of polysaccharide structure features on aldehyde group content, molecular size and tanning performance of DAPs were investigated. Each DAP had abundant aldehyde groups (>7 mmol/g) for fur tanning in the experimental conditions, and DAP with higher aldehyde group content was obtained when polysaccharide with lower molecular weight and linear chain was used. Lower crystallinity and β-(1→4) glycosidic linkage of polysaccharide benefited its degradation. Compared with dialdehyde ST (Mw>150,000) and dialdehyde CD (Mw<500), DAPs prepared from β-(1→4)-linked amorphous SA and TG had moderate molecular sizes (Mw 15,000-30,000) and exhibited satisfactory penetrability and crosslinking reactivity in collagen fiber network, and thus performed more favorable tanning properties in terms of higher shrinkage temperature and whiteness of fur. This suggests the suitability of β-(1→4)-linked amorphous polysaccharides for preparing dialdehyde tanning agents.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 201, 1 December 2018, Pages 549-556
نویسندگان
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