High-yield Synthesis of Nanohybrid Shish-kebab Polyethylene-carbon Nanotube Structure

doi:10.1016/S1004-9541(13)60439-5

Abstract

Abstract: We report a novel method to prepare nanohybrid shish-kebab (NHSK) structure of polyethylene (PE) and carbon nanotube (CNT). Pristine CNTs without surface modification with high concentration was effectively dispersed in xylene solution by a simple shearing method, which induces the quick crystallization of PE in xylene to form a novel NHSK structure with more dense and smaller PE kebab on CNT axis. The flocculated NHSK product was transferred quickly from the xylene solution to the ethanol solution, in order to shorten the preparation time. The freeze-drying method was used in vacuum instead of high-temperature drying to avoid the aggregation of NHSK product. These improvements allow the formation of NHSK with an absolute yield of 200 mg·h^-1, which is 2000 folds of that reported previously. It is favorable to apply this structured material in high performance nanocomposite, by improving the compatibility of CNTs in polymer and the interfacial force between CNTs and polymer.

Key words: carbon nanotube, nanocomposites, nanohybrid Shish-Kebab structure, surface decoration, crystallization

摘要： We report a novel method to prepare nanohybrid shish-kebab (NHSK) structure of polyethylene (PE) and carbon nanotube (CNT). Pristine CNTs without surface modification with high concentration was effectively dispersed in xylene solution by a simple shearing method, which induces the quick crystallization of PE in xylene to form a novel NHSK structure with more dense and smaller PE kebab on CNT axis. The flocculated NHSK product was transferred quickly from the xylene solution to the ethanol solution, in order to shorten the preparation time. The freeze-drying method was used in vacuum instead of high-temperature drying to avoid the aggregation of NHSK product. These improvements allow the formation of NHSK with an absolute yield of 200 mg·h^-1, which is 2000 folds of that reported previously. It is favorable to apply this structured material in high performance nanocomposite, by improving the compatibility of CNTs in polymer and the interfacial force between CNTs and polymer.

关键词: carbon nanotube, nanocomposites, nanohybrid Shish-Kebab structure, surface decoration, crystallization

CUI Chaojie, QIAN Weizhong, ZHAO Mengqiang, XU Guanghui, NIE Jingqi, JIA Xilai, WEI Fei . High-yield Synthesis of Nanohybrid Shish-kebab Polyethylene-carbon Nanotube Structure[J]. Chin.J.Chem.Eng., DOI: 10.1016/S1004-9541(13)60439-5.

崔超婕, 骞伟中, 赵梦强, 徐光辉, 聂晶琦, 贾希来, 魏飞 . High-yield Synthesis of Nanohybrid Shish-kebab Polyethylene-carbon Nanotube Structure[J]. Chinese Journal of Chemical Engineering, DOI: 10.1016/S1004-9541(13)60439-5.

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