Preparation of inexpensive new carbon nanofibers with high crystallinity, and their characterization

虽然它们是非石墨化碳的前体，但只有约100纳米厚的块状纤维素的表皮区域通过简单的高温热处理（表皮效应）被石墨化。对于厚度在100nm以下的纤维素纳米纤维（Cel-NFs），由于希望集肤效应到达每个Car-NF的中心，因此应通过高温热处理制备高度结晶的碳纳米纤维（Car-NFs）。以细菌纤维素为原料，通过溶液分散和萃取得到细胞- nf聚集体，经炭化和高温热处理制备car - nf聚集体。通过高温热处理，将厚度约为50 nm的高度分散的Car-NFs晶体化。以Cel-NFs为原料制备的高结晶Car-NFs具有价格低廉、环境友好等优点，具有广泛的应用前景。

Only skin regions with about 100 nm thick of bulk cellulose are graphitized by a simple heat treatment at high temperatures (skin effect) though they are precursors of nongraphitizing carbon. In the case of cellulose nanofibers (Cel-NFs) with about 100 nm thick or less, highly crystallized carbon nanofibers (Car-NFs) should be prepared by the high temperature heat treatment because the skin effect is expected to reach the center of each Car-NF. The Cel-NF aggregates were obtained from nanocellulose such as bacteria cellulose through careful dispersion in solutions and extraction, and Car-NFs were prepared from the aggregates by carbonization and heat treatments at high temperature. The crystallized Car-NFs were obtained from the highly dispersed Cel-NFs with about 50 nm thick by the high temperature heat treatments. The highly crystallized Car-NFs prepared from Cel-NFs will be applied to many fields because of inexpensive and environment friendly.