Feleke Kibrom, Thothadri Ganesh, Beri Tufa Habtamu, Rajhi Ali A, Ahmed Gulam Mohammed Sayeed
Department of Manufacturing Engineering, School of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama P.O. Box 1888, Ethiopia.
Department of Materials Engineering, School of Mechanical, Chemical and Materials Engineering, Adama Science and Technology University, Adama P.O. Box 1888, Ethiopia.
Polymers (Basel). 2023 Jan 16;15(2):469. doi: 10.3390/polym15020469.
Flax is a commercial crop grown in many parts of the world both for its seeds and for its fibers. The seed-based flax variety (linseed) is considered less for its fiber after the seed is extracted. In this study, linseed straw was utilized and processed to extract fiber and cellulose through optimization of retting time and a multi-step alkaline peroxide extraction process using the Taguchi design of experiment (DOE). Effects of retting duration on fiber properties as well as effects of solvent concentration, reaction temperature, and time on removal of non-cellulosic fiber components were studied using the gravimetric technique, Fourier transform infrared (FTIR) spectroscopy and thermal studies. Based on these findings, retting for 216 h at room temperature should offer adequate retting efficiency and fiber characteristics; 70% cellulose yield was extracted successfully from linseed straw fiber using 75% ethanol-toluene at 98 °C for 4 h, 6% NaOH at 75 °C for 30 min, and 6% HO at 90 °C for 120 min.
亚麻是一种在世界许多地方种植的经济作物，其种子和纤维都具有商业价值。以种子为主的亚麻品种（亚麻籽）在提取种子后，其纤维的利用价值相对较低。在本研究中，利用亚麻籽秸秆，通过优化沤麻时间，并采用田口实验设计（DOE）的多步碱性过氧化氢提取工艺来提取纤维和纤维素。使用重量法、傅里叶变换红外（FTIR）光谱法和热分析研究了沤麻持续时间对纤维性能的影响，以及溶剂浓度、反应温度和时间对非纤维素纤维成分去除的影响。基于这些发现，在室温下沤麻216小时应能提供足够的沤麻效率和纤维特性；使用75%乙醇 - 甲苯在98°C下处理4小时、6%氢氧化钠在75°C下处理30分钟、6%过氧化氢在90°C下处理120分钟，成功从亚麻籽秸秆纤维中提取出了70%的纤维素产量。
