Preparation and Characterization of Plasticized Starch/Carbon Black-Oxide Nanocomposites

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• 作者：Dayan Qian ; Peter R. Chang ; Pengwu Zheng ; Xiaofei Ma
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2012
• 出版时间：June 13, 2012
• 年：2012
• 卷：51
• 期：23
• 页码：7941-7947
• 全文大小：517K
• 年卷期：v.51,no.23(June 13, 2012)
• ISSN：1520-5045

文摘

The carbon black-oxide (CBO) particles were prepared by oxidizing carbon black (CB) in a modified Hummer鈥檚 method to improve the dispersion of CBO in water. The carboxylic acid, epoxide groups, and hydroxyl groups were formed in the resulting golden CBO particles, which in the size of about 30鈥?0 nm were smaller than CB particles. And the dispersion of CBO particles was so good in distilled water that CBO particles in aqueous solution followed the Lambert鈥揃eer鈥檚 law well. The nanocomposites were also prepared using CBO or CB particles as the fillers in glycerol-plasticized starch (GPS) matrix by the casting process. CBO fillers had good dispersion in GPS matrix and exhibited an obvious reinforcing effect. Both tensile strength and Youngs modulous of GPS/CBO composites were higher than GPS/CB composites. In views of the values of water vapor permeability (WVP), GPS/CBO composites exhibited better water resistance than GPS/CB composites.