Surface modification of cellulose nanocrystals (CNC) by a cationic surfactant
Surface modification of cellulose nanocrystals (CNC) by a cationic surfactant
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DOI：
10.1016/j.indcrop.2014.11.027
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发表时间：
2015-03-01
影响因子：
5.9
通讯作者：
Riedl, Bernard
中科院分区：
文献类型：
--
作者：
Kaboorani, Alireza;Riedl, Bernard
纤维素纳米晶体（CNC）的表面改性对于探索这些CNC的新应用非常重要。在本研究中，使用阳离子表面活性剂十六烷基三甲基溴化铵(HDTMA)对CNC表面进行改性。在改性前后对 CNC 进行了化学和结构表征。结果表明，CNC 与 HDTMA 发生化学反应，导致 CNC 表面出现新的化学基团（CH2、CH3 和季铵基团）。 X射线衍射实验表明，改性后晶体结构没有发生变化。与未改性的CNC相比，改性的CNC具有不同的悬浮稳定性和分散性。这项研究的结果表明，HDTMA 可用于简单直接的表面改性，对 CNC 没有负面影响。 (C) 2014 Elsevier B.V. 保留所有权利。
Surface modification of cellulose nanocrystals (CNC) is very important to explore new applications for these CNC. In this study, a cationic surfactant, hexadecyltrimethylammonium (HDTMA) bromide, was used to modify the surface of CNC. Chemical and structural characterizations of CNC were conducted before and after modification. Results revealed that the chemical reaction of CNC with HDTMA led to the presence of new chemical groups (CH2, CH3 and quaternary ammonium groups) on the surface of the CNC. Experiments conducted by X-ray diffraction indicated no change in the crystalline structure as a result of the modification. Modified CNC had different suspension stabilities and dispersibility compared to unmodified CNC. The results of this study demonstrated that HDTMA can be used for a simple and straightforward surface modification with no negative effects on CNC. (C) 2014 Elsevier B.V. All rights reserved.