Scholarlink

<p>Improving the accessibility of cellulose is essential for the production of derivative products. This can be achieved by modifying its physicochemical properties. This research aimed to investigate the properties of cellulose extracted from the torch ginger stem. The cellulose was pretreated with FeCl<sub>3</sub> and then hydrolyzed using HCl vapor at a 37% concentration. Hydrolysis was conducted in a pressurized HCl vapor system at 27.60&#xa0;kPa and 30&#xa0;°C for 0–24&#xa0;h. Similar treatment was conducted to cellulose without FeCl<sub>3</sub> (unpretreated). The results show that FeCl<sub>3</sub> pretreatment significantly decreased degree of polymerization (DP) from 0 to 24&#xa0;h compared to unpretreated cellulose. The hydrolysis reaction occurred above the saturation point of HCl. When the cellulose was hydrolyzed with HCl vapor, cellulose morphology, thermal properties, and functional groups remained largely unchanged, respectively, as observed by FESEM, TGA, and FTIR methods. However, the X-ray diffractograms and FTIR spectra revealed that decrystallization of FeCl<sub>3</sub> pretreated cellulose occurred after 10&#xa0;h of hydrolysis. The 24&#xa0;h hydrolysis yield for FeCl<sub>3</sub> unpretreated and pretreated cellulose was 90.6% (DP of 118) and 86.8% (DP of 76), respectively. Therefore, this hydrolysis system can be considered an important pretreatment method for preparing cellulose derivatives.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

The Physicochemical Changes of Cellulose Hydrolyzed with HCl Vapor after Pretreatment with FeCl3

  • 期刊论文

  • 发表日期：

    2025年1月7日

查看全文
  • Herman Marius Zendrato,
  • Nanang Masruchin,
  • Siti Nikmatin,
  • Nam Hun Kim,
  • Seung Hwan Lee,
  • Nyoman Jaya Wistara

摘要

Improving the accessibility of cellulose is essential for the production of derivative products. This can be achieved by modifying its physicochemical properties. This research aimed to investigate the properties of cellulose extracted from the torch ginger stem. The cellulose was pretreated with FeCl3 and then hydrolyzed using HCl vapor at a 37% concentration. Hydrolysis was conducted in a pressurized HCl vapor system at 27.60 kPa and 30 °C for 0–24 h. Similar treatment was conducted to cellulose without FeCl3 (unpretreated). The results show that FeCl3 pretreatment significantly decreased degree of polymerization (DP) from 0 to 24 h compared to unpretreated cellulose. The hydrolysis reaction occurred above the saturation point of HCl. When the cellulose was hydrolyzed with HCl vapor, cellulose morphology, thermal properties, and functional groups remained largely unchanged, respectively, as observed by FESEM, TGA, and FTIR methods. However, the X-ray diffractograms and FTIR spectra revealed that decrystallization of FeCl3 pretreated cellulose occurred after 10 h of hydrolysis. The 24 h hydrolysis yield for FeCl3 unpretreated and pretreated cellulose was 90.6% (DP of 118) and 86.8% (DP of 76), respectively. Therefore, this hydrolysis system can be considered an important pretreatment method for preparing cellulose derivatives.