| 郭倩,雷婉青,郭鹏飞,张家豪,李泽平,周星.废纸纤维制备纳米纤维素及其在环氧大豆油基聚氨酯中的改性研究[J].中国造纸,2026,45(5):117-126 |
二维码（扫一下试试看！） |
| 废纸纤维制备纳米纤维素及其在环氧大豆油基聚氨酯中的改性研究 |
| Preparation of Nanocelluloses from Waste Paper and Its Modification in Epoxidized Soybean Oil-based Polyurethane |
| 收稿日期：2025-11-04 修订日期：2025-11-27 |
| DOI：10.11980/j.issn.0254-508X.2026.05.013 |
| 关键词: 废纸 纳米纤维素 生物质基聚氨酯 |
| Key Words:waste paper nanocelluloses biomass-based polyurethane |
| 基金项目:大学生创新训练计划项目（202510700034）。 |
| 作者 | 单位 | 邮编 | | 郭倩* | 西安理工大学印刷包装与数字媒体学院,陕西西安,710054 | 710054 | | 雷婉青* | 西安理工大学印刷包装与数字媒体学院,陕西西安,710054 | 710054 | | 郭鹏飞 | 西安理工大学印刷包装与数字媒体学院,陕西西安,710054 | 710054 | | 张家豪 | 西安理工大学印刷包装与数字媒体学院,陕西西安,710054 | 710054 | | 李泽平 | 西安理工大学印刷包装与数字媒体学院,陕西西安,710054 | 710054 | | 周星* | 西安理工大学印刷包装与数字媒体学院,陕西西安,710054 | 710054 |
|
| 摘要点击次数: 703 |
| 全文下载次数: 116 |
| 摘要:本研究以办公废纸为原料，经脱墨、打浆、干燥、粉碎等预处理，采用酶解法从废纸纤维中制得具有高附加值的纳米纤维素（NCs），并以其为改性剂合成了环氧大豆油基非异氰酸酯聚氨酯（NCs/NIPU）复合材料，探究了NCs添加量（0.1%~1.5%）对NCs/NIPU复合材料的热性能、拉伸性能、形状记忆和自修复性能的影响。结果表明，NCs与NIPU主要通过物理共混方式构建复合体系，少量NCs的加入使NIPU的残炭率从11.8%上升至18.1%（NCs添加量0.7%），拉伸强度最高提升252%，水接触角最高可达84.3°，表现出亲水性。此外，NCs/NIPU复合材料可在50 s内实现弯曲、卷曲、扭曲形变恢复，特别是可减少扭曲形变恢复时间约6 s，并在60 ℃下实现受损材料的自愈合，有效延长NIPU的使用寿命。 |
| Abstract:Office waste paper was used as raw material and pretreated via deinking, beating, drying, and pulverizing to prepare high-value-added nanocelluloses (NCs) through enzymatic hydrolysis. Then NCs were used as a modifier in the synthesis of epoxidized soybean oil-based non-isocyanate polyurethane (NCs/NIPU) composite materials. The effects of NCs content (0.1%~1.5%) on the thermal properties, tensile properties, shape memory properties, and self-healing behavior of the NCs/NIPU composites were investigated. The results showed that NCs and NIPU formed a composite system mainly through physical blending. The addition of a small amount of NCs increased the char yield of NIPU from 11.8% to 18.1% (with 0.7% NCs added), improved the tensile strength by up to 252%, and raised the water contact angle to a maximum of 84.3°, showing hydrophilicity. Furthermore, the NCs/NIPU composites could recover from bending, curling, and twisting deformations within 50 s, especially the recovery time for twisting deformation was shortened by approximately 6 s. The NCs/NIPU composites materials also exhibited self-healing ability for damaged parts at 60 ℃, effectively extending the service life of NIPU. |
| 查看全文
HTML
查看/发表评论 下载PDF阅读器 |
|
|
|