Department of Macromolecular Science and Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio 44106, USA.
Biomacromolecules. 2009 Apr 13;10(4):712-6. doi: 10.1021/bm8010903.
The ability to produce polymer nanocomposites, which comprise a percolating, three-dimensional network of well-individualized nanofibers, is important to maximize the reinforcing effect of the nanofibers. While microcrystalline cellulose (MCC) has been previously shown to improve the mechanical properties of polymer composites, the formation of fibrous percolating networks within the nanocomposites has been stifled. Through the utilization of a template approach, nanocomposites based on an ethylene oxide/epichlorohydrin copolymer and nanowhiskers isolated from MCC were produced that display the maximum mechanical reinforcement predicted by the percolation model.
制备聚合物纳米复合材料的能力十分重要，因为这类复合材料包含由高度分散的纳米纤维组成的贯穿式三维网络，这有利于最大程度地提高纳米纤维的增强效果。尽管此前已经证明微结晶纤维素（MCC）可以改善聚合物复合材料的机械性能，但在纳米复合材料中形成纤维状的贯穿式网络的情况却受到抑制。通过采用模板法，制备了基于氧化乙烯/表氯醇共聚物和从 MCC 中分离得到的纳米晶须的纳米复合材料，其机械增强效果达到了由渗流模型预测的最大值。
