Synthesis of nanoparticle from biopolymers present in agricultural waste residue is significant as they are eco-friendly and serve as alternative to unrenewable petroleum resources. This research focuses on utilizing Corn cob, a lignocellulosic biomass for the simultaneous production of cellulose and hemicellulose using an energy efficient method. A sequential process of microwave irradiation and ultrasound technique is carried out to obtain cellulose and hemicellulose at a faster rate. Microwave assisted delignification showed that delignification of about 97.31% was achieved at an optimum condition of 180 W power, 12.86% Sodium chlorite and 16 min reaction time. Ultrasound assisted alkali extraction resulted in a yield of 0.445 g of cellulose /g of corn cob and 0.327 g of hemicellulose /g of corn cob at an optimum condition of 41 °C, 14% NaOH for 46 min. The extracted cellulose and hemicellulose were converted into nanoparticles as they show unique properties in nanoscale size. Acid hydrolysis was found to reduce the average particle size of cellulose from 894 nm to 131.4 nm and alkylation and nanoprecipitation was shown to decrease the size of hemicellulose from 876.9 nm to 130.4 nm. Nano Cellulose structure with a crystallinity index of 72.36% was retained which increases their applications as reinforcement material in polymer matrices.

由农业废渣中存在的生物聚合物合成纳米颗粒具有重要意义，因为它们具有生态友好性并可以替代不可再生的石油资源。这项研究的重点是利用玉米芯（一种木质纤维素生物质），利用一种节能方法同时生产纤维素和半纤维素。进行微波辐射和超声技术的顺序过程，以更快的速度获得纤维素和半纤维素。微波辅助的脱木素表明，在180 W功率，12.86％的亚氯酸钠和16分钟的反应时间的最佳条件下，可实现约97.31％的脱木素。在41°C的最佳条件下，超声辅助碱提取的产量为0.445 g纤维素/ g玉米芯和0.327 g半纤维素/ g玉米芯，14％NaOH处理46分钟。提取的纤维素和半纤维素被转化为纳米颗粒，因为它们在纳米级尺寸上显示出独特的特性。发现酸水解将纤维素的平均粒度从894nm降低至131.4nm，并且烷基化和纳米沉淀显示出将半纤维素的尺寸从876.9nm降低至130.4nm。保留了结晶度为72.36％的纳米纤维素结构，这增加了它们在聚合物基质中作为增强材料的应用。