Hafid Halimatun Saadiah, Omar Farah Nadia, Bahrin Ezyana Kamal, Wakisaka Minato
Institute of Plantation Studies, Universiti Putra Malaysia, 43400 UPM, Serdang, Selangor, Malaysia.
Preparatory Center for Science and Technology (PPST), Universiti Malaysia Sabah, Jalan UMS, 88400, Kota Kinabalu, Sabah, Malaysia.
Bioresour Bioprocess. 2023 Jan 25;10(1):7. doi: 10.1186/s40643-023-00631-w.
Cellulose extraction from gloss art paper (GAP) waste is a recycling strategy for the abundance of gloss art paper waste. Here, a study was conducted on the impact of ultrasonic homogenization for cellulose extraction from GAP waste to improve the particle size, crystallinity, and thermal stability.
At treatment temperature of 75.8 °C, ultrasonic power level of 70.3% and 1.4 h duration, cellulose with properties of 516.4 nm particle size, 71.5% crystallinity, and thermal stability of 355.2 °C were extracted. Surface modification of cellulose GAP waste with HPO hydrolysis and 2,2,6,6-tetramethylpiperidine-1-oxyl radical (TEMPO) oxidation was done followed by starch reinforcement. Surface hydrophobicity and mechanical strength were increased for HPO hydrolysis and TEMPO oxidation starch-cellulose. No reduction of thermal properties observed during the treatment, while increment of crystallinity index up to 47.65-59.6% was shown. Neat starch film was more transparent, followed by starch-TEMPO film and starch-HPO film, due to better homogeneity.
The cellulose GAP reinforced starch film shows potential in developing packaging materials and simultaneously provide an alternative solution of GAP waste recycling.
从光泽美术纸（GAP）废料中提取纤维素是一种针对大量光泽美术纸废料的回收策略。在此，开展了一项关于超声均质处理对从GAP废料中提取纤维素的影响的研究，以改善其粒径、结晶度和热稳定性。
在处理温度75.8℃、超声功率水平70.3%以及处理时长1.4小时的条件下，提取出了粒径为516.4纳米、结晶度为71.5%且热稳定性为355.2℃的纤维素。对纤维素GAP废料进行了磷酸水解（HPO）和2,2,6,6-四甲基哌啶-1-氧基自由基（TEMPO）氧化的表面改性，随后进行淀粉增强。HPO水解和TEMPO氧化的淀粉-纤维素的表面疏水性和机械强度有所提高。处理过程中未观察到热性能降低，同时结晶度指数提高至47.65 - 59.6%。由于均匀性更好，纯淀粉膜更透明，其次是淀粉-TEMPO膜和淀粉-HPO膜。
纤维素GAP增强淀粉膜在开发包装材料方面具有潜力，同时为GAP废料回收提供了一种替代解决方案。
