Physicomechanical properties of nanocomposites based on cellulose nanofibre and natural rubber latex
Physicomechanical properties of nanocomposites based on cellulose nanofibre and natural rubber latex
复制标题
DOI：
10.1007/s10570-012-9830-1
复制
发表时间：
2013-02-01
期刊：
影响因子：
5.7
通讯作者：
Anandjiwala, R.
中科院分区：
文献类型：
--
作者：
Abraham, Eldho;Deepa, B.;Anandjiwala, R.
采用蒸汽爆破法从香蕉原纤维中分离出直径为10-60 nm的纤维素纳米纤维（CNF）。这些CNF被用作天然橡胶（NR）胶乳的增强元素沿着与交联剂一起制备纳米复合膜。研究了CNF用量对NR/CNF纳米复合材料力学性能和动态力学性能的影响。分析了其形貌、晶体学和光谱学的变化。杨氏模量和拉伸强度的显着改善，观察到作为一个结果，CNF的橡胶基体中，特别是在较高的CNF加载。DMA测试表明，CNF的加入使橡胶基体的储能模量发生了变化，证明了CNF对NR胶乳的补强作用。提出了一种机制，作为纤维素和锌金属之间的反应的结果，这是起源于复合材料形成过程中的锌-纤维素络合物及其三维网络的引入。
Cellulose nanofibres (CNF) with diameter 10-60 nm were isolated from raw banana fibres by steam explosion process. These CNF were used as reinforcing elements in natural rubber (NR) latex along with cross linking agents to prepare nanocomposite films. The effect of CNF loading on the mechanical and dynamic mechanical (DMA) properties of NR/CNF nanocomposite was studied. The morphological, crystallographic and spectroscopic changes were also analyzed. Significant improvement of Young's modulus and tensile strength was observed as a result of addition of CNF to the rubber matrix especially at higher CNF loading. DMA showed a change in the storage modulus of the rubber matrix upon addition of CNF which proves the reinforcing effect of CNF in the NR latex. A mechanism is suggested for the introduction of the Zn-cellulose complex and its three dimensional network as a result of the reaction between the cellulose and the Zinc metal which is originated during the composite formation.