本文二维码信息
二维码(扫一下试试看!)
基于OCC的纤维素纳米纤丝制备及其对废纸造纸增强作用研究
OCC-based Cellulose Nanofibril and Its Reinforcing Effect on Recycled Papermaking
收稿日期:2022-06-24  
DOI:DOI:10.11980/j.issn.0254-508X.2023.02.003
关键词:  OCC  高锰酸钾  纤维素纳米纤丝  废纸造纸  白水
Key Words:OCC  KMnO4  cellulose nanofibril  recycled papermaking  white water
基金项目:陕西省专家服务计划(2022WGZJ-11); 中国-中东欧大学联合办学项目(2021099);陕西省重点产业创新链项目(2020ZDLGY11-03);纤维素生物转化中酶/细胞共固定体系的构建及机制研究(20210407)。
作者单位邮编
刘亚丽 陕西科技大学轻工科学与工程学院陕西西安710021 710021
张素风* 陕西科技大学轻工科学与工程学院陕西西安710021 710021
李楠 陕西科技大学轻工科学与工程学院陕西西安710021 710021
李磊 陕西科技大学轻工科学与工程学院陕西西安710021 710021
朱新月 陕西科技大学轻工科学与工程学院陕西西安710021 710021
邓婷婷 陕西科技大学轻工科学与工程学院陕西西安710021 710021
摘要点击次数: 1725
全文下载次数: 1531
摘要:采用高锰酸钾氧化预处理废旧箱纸板(OCC),使其达到微纤维分离点,结合轻微的均质处理高效获得OCC基纤维素纳米纤丝(OCNF),得率约为70%。最优条件下制备的OCNF具有良好的纳米尺寸,长径比高达313,Zeta电位-21.0 mV,结晶度为69.23%,OCNF薄膜具有良好的力学性能(应力为44.16 MPa,应变为5.82%,弹性模量为2.55 MPa)及光学性能(透光率约为60%)。添加5% OCNF所抄纸张的抗张指数、撕裂指数及耐折度分别提升了27.74%、40.97%和228.57%。同时,白水的质量也得以大幅改善,浊度、悬浮物、CODCr分别降低了59.10%、48.08%和42.17%。
Abstract:Old corrugated container (OCC) was pretreated oxidation by potassium permanganate, reaching the microfiber separation point, then combined with a slight homogenization treatment. The OCC-based cellulose nanofiber (OCNF) was efficiently obtained with a yield of approximate 70%. The OCNF had good nanometer size with the aspect ratio of 313, the Zeta potential was -21.0 mV, and the crystallinity was 69.23%. The OCNF films had good mechanical properties(stress of 44.16 MPa, strain of 5.82%, and elastic modulus of 2.55 MPa) and optical properties (transmittance of approximate 60%). The obtained 5% OCNF was applied to OCC papermaking, and the tensile index, tear resistance index, and folding endurance of recycled paper increased by 27.74%, 40.97%, and 228.57%, respectively. The quality of white water had also been greatly improved, and the turbidity, suspended solids, and CODCr had been reduced by 59.10%, 48.08%, and 42.17%, respectively.
查看全文  HTML  查看/发表评论  下载PDF阅读器