Preparation of entangled nanocellulose fibers from APMP and its magnetic functional property as matrix
Preparation of entangled nanocellulose fibers from APMP and its magnetic functional property as matrix
复制标题
APMP缠结纳米纤维素纤维的制备及其作为基质的磁性功能
DOI：
10.1016/j.carbpol.2013.01.052
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发表时间：
2013-04-15
影响因子：
11.2
通讯作者：
Liu, Shouxin
中科院分区：
文献类型：
--
作者：
Li, Wei;Zhao, Xin;Liu, Shouxin
以杨树碱性过氧化物机械浆（APMP）为原料，采用物理超声法制备纳米纤维素纤维气凝胶。APMP作为原料，其独特的力学作用使纤维在制浆过程中发生折叠和松散，有利于对长而缠结的nfc进行进一步的化学净化和后续处理。所得的nfc结晶度（77.8%）高于APMP(72.6%)，直径范围在20 ~ 90 nm之间，可自组装成网状结构。nfc的初始热降解发生在331.5℃，制备的nfc网络气凝胶作为基体，可以阻止铁磁性CoFe2O4纳米颗粒的生长和聚集。随着FeSO4/CoCl2盐浓度的增加，磁性复合材料的CoFe2O4含量从34 wt%增加到75 wt%，磁性能均有所提高。(C) 2013 Elsevier Ltd.版权所有。
Nanocellulose fibers (NCFs) aerogels were prepared from poplar alkaline peroxide mechanical pulp (APMP) using physical ultrasonication method. As raw materials, the unique mechanical effects of APMP cause the fiber folding and loose during the pulping process, which was beneficial to further chemical purification and subsequent treatment for long and entangled NCFs. The obtained NCFs exhibited higher crystallinity (77.8%) compared with that of APMP (72.6%) together with diameters range from 20 to 90 nm and self-assembled to network. The primary thermal degradation of NCFs occurred at 331.5 degrees C. The prepared NCFs network aerogels acted as matrix which can prevent the growth and aggregation of ferromagnetic CoFe2O4 nanoparticles. The ratio of the CoFe2O4 of magnetic composites increased from 34 wt% to 75 wt%, and the magnetic properties were all increased with increasing the reaction concentration of FeSO4/CoCl2 salt. (C) 2013 Elsevier Ltd. All rights reserved.