Chyerochana Natcha, Huynh Quang Tam, Jaitham Udomsap, Phitsuwan Paripok, Aryusuk Kornkanok, Hongsibsong Surat, Chen Ku-Fan, Chang Ken-Lin
Division of Biochemical Technology, School of Bioresources and Technology, King Mongkut's University of Technology Thonburi, Bangkuntien, Bangkok 10140, Thailand.
Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung 804, Taiwan.
ACS Omega. 2025 Mar 11;10(11):10949-10961. doi: 10.1021/acsomega.4c09059. eCollection 2025 Mar 25.
This study explores the production of bioplastic films from sugar cane bagasse, wood pulp waste, and boxboard waste using a three-step, sustainable process. First, cellulose was extracted from the biomass through a deep eutectic solvent (DES) pretreatment system composed of choline chloride, ethylene glycol, and oxalic acid (ChCl-EG-OA), which effectively removed lignin and enabled an efficient alkaline treatment for hemicellulose removal. Among the biomass sources, sugar cane bagasse yielded the highest cellulose content (72.86%), followed by wood pulp waste (43.82%) and boxboard waste (38.81%). In the second phase, optimal conditions for cellulose acetylation were established. Wood pulp waste achieved the highest cellulose acetate yield (81.25%), followed by boxboard waste (70.78%) and sugar cane bagasse (47.2%). Wood pulp waste-derived cellulose acetate also exhibited the highest acetyl content and degree of substitution (DS) at 2.83. In the final phase, bioplastic films derived from boxboard waste demonstrated superior mechanical properties, with a tensile strength of 11.23 MPa and elongation of 3.14%. In contrast, wood pulp waste-derived plastic exhibited moderate tensile strength (4.56 MPa) and minimal elongation (1.0%), while sugar cane bagasse-derived plastic showed the weakest performance. The study further highlights the adaptability of mixed-source bioplastics, as a blend of boxboard and wood pulp waste achieved a tensile strength of 7.26 MPa and elongation of 1.63%, illustrating the potential to enhance bioplastic properties through a biomass source combination. This approach contributes to the advancement of sustainable, high-performance bioplastics for a broad range of applications.
本研究探索了采用三步可持续工艺，利用甘蔗渣、木浆废料和硬纸板废料生产生物塑料薄膜。首先，通过由氯化胆碱、乙二醇和草酸（ChCl-EG-OA）组成的深共熔溶剂（DES）预处理系统从生物质中提取纤维素，该系统有效去除了木质素，并能进行高效的碱处理以去除半纤维素。在生物质来源中，甘蔗渣的纤维素含量最高（72.86%），其次是木浆废料（43.82%）和硬纸板废料（38.81%）。在第二阶段，确定了纤维素乙酰化的最佳条件。木浆废料的醋酸纤维素产量最高（81.25%），其次是硬纸板废料（70.78%）和甘蔗渣（47.2%）。木浆废料衍生的醋酸纤维素的乙酰含量和取代度（DS）也最高，为2.83。在最后阶段，硬纸板废料衍生的生物塑料薄膜表现出优异的机械性能，拉伸强度为11.23MPa，伸长率为3.14%。相比之下，木浆废料衍生的塑料表现出中等的拉伸强度（4.56MPa）和最小的伸长率（1.0%），而甘蔗渣衍生的塑料性能最弱。该研究进一步强调了混合源生物塑料的适应性，因为硬纸板和木浆废料的混合物的拉伸强度为7.26MPa，伸长率为1.63%，这表明通过生物质来源组合有提高生物塑料性能的潜力。这种方法有助于推动可持续、高性能生物塑料在广泛应用中的发展。
