caa a22 4500 445384743 CHVBK 20180317143028.0 cr unu---uuuuu 170323e20110901xx s 000 0 eng 10.1007/s10924-011-0300-x doi (NATIONALLICENCE)springer-10.1007/s10924-011-0300-x A Two-Step Chemical Process for the Extraction of Cellulose Fiber and Pectin from Mulberry Branch Bark Efficiently [Elektronische Daten] [Lin Liu, Tian Jiang, Juming Yao] In this work, a two-step method for the extraction of pectin and cellulose fiber from mulberry branch bark, a by-product of sericultural industry, was described. The method was based on the acid extraction of pectin and subsequently alkali treatment for obtaining cellulose fibers. The obtained pectin was high purity with the total galacturonic acid content of 85.46%±2.76% and the degree of esterification of 71.13%±1.67%. The chemical composition analysis, FTIR spectroscopy, XRD and TG analysis were used to characterize the cellulose fiber at different processing stages. After the two-step chemical process, the cellulose content was increased from 37.38% in original bark to 92.60% in cellulose fiber. The FTIR spectra revealed the removal of pectin, hemicelluloses and lignin from the bark by acid extraction and alkali treatment. The XRD and TG results indicated that the obtained cellulose fibers were with the increased crystallinity and thermal stability, whose crystallinity and degradation temperature were 86.36%±5.56% and 355°C, respectively. This work may provide a new approach for high utilization of mulberry branch bark. Springer Science+Business Media, LLC, 2011 Mulberry bark nationallicence Pectin nationallicence Cellulose nationallicence Acid extraction nationallicence Alkali treatment nationallicence Liu Lin The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park, 310018, Hangzhou, China aut Jiang Tian The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park, 310018, Hangzhou, China aut Yao Juming The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park, 310018, Hangzhou, China aut Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/3(2011-09-01), 568-573 1566-2543 19:3<568 2011 19 10924 https://doi.org/10.1007/s10924-011-0300-x text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10924-011-0300-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Liu Lin The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park, 310018, Hangzhou, China aut NATIONALLICENCE 700 1- Jiang Tian The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park, 310018, Hangzhou, China aut NATIONALLICENCE 700 1- Yao Juming The Key Laboratory of Advanced Textile Materials and Manufacturing Technology of Ministry of Education, College of Materials and Textile, Zhejiang Sci-Tech University, Xiasha Higher Education Park, 310018, Hangzhou, China aut NATIONALLICENCE 773 0- Journal of Polymers and the Environment Springer US; http://www.springer-ny.com 19/3(2011-09-01), 568-573 1566-2543 19:3<568 2011 19 10924 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer