کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7784490 | 1500577 | 2018 | 20 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of divalent anionic catalysts on cross-linking of cellulose with 1,2,3,4-butanetetracarboxylic acid
ترجمه فارسی عنوان
اثرات کاتالیزورهای آنیونی دیوالنت روی پیوند سلولز با 1،2،3،4-بوتان تتراکربیکی اسید
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کلمات کلیدی
Oxalic acid (PubChem CID: 971)Succinic acid (PubChem CID: 1110)Tetrahydrofuran (PubChem CID: 8028)Valence - ارزشیابیStrength - استحکامAnti-wrinkle - ضد چروکTwo-dimensional correlation spectroscopy - طیف سنجی همبستگی دو بعدیSodium hydroxide (PubChem CID: 14798) - هیدروکسید سدیم (PubChem CID: 14798)Cross-linking - پیوند متقابل
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
چکیده انگلیسی
1,2,3,4-Butanetetracarboxylic acid (BTCA) can efficiently esterify cellulose with pyrophosphoric acid (PPA) as a catalyst to remove protons of reaction intermediates. However, valence and relative concentration ratio (RCR) of catalyst anions correlating to pH of finishing bath played a critical role in the reactions. Results here indicated that wrinkle recovery angle, tensile strength retention and ester absorbance of fabrics treated at pH of 2.8 showed higher values. It was a competing reaction for BTCA molecules to esterify or depolymerize cellulose. Importantly, divalent PPA anions were more efficient than monovalent ones in catalyzing the esterification between anhydrides and cellulose, which was confirmed by FTIR results and two-dimensional correlation spectroscopy analyses and by the RCRs of PPA anions and their changing rates versus pH. Furthermore, the higher catalytic efficiency of divalent anions was proved by the selected model catalysts. Meaningfully, the fabrics treated at pH â¤Â 3.2 presented good durability.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Polymers - Volume 181, 1 February 2018, Pages 292-299
Journal: Carbohydrate Polymers - Volume 181, 1 February 2018, Pages 292-299
نویسندگان
Bolin Ji, Cunyi Zhao, Kelu Yan, Gang Sun,