Self-nucleation-induced nonisothermal crystallization of nylon 6 from   the melt

doi:10.1002/app.42413

CORC > 北京大学 > 化学与分子工程学院

	Self-nucleation-induced nonisothermal crystallization of nylon 6 from the melt
	Li, Huizhen ; Guo, Ran ; Liu, Yuhai ; Liu, Shaoxuan ; Proniewicz, Edyta ; Proniewicz, Leonard M. ; Zhao, Ying ; Xu, Yizhuang ; Wu, Jinguang
刊名	JOURNAL OF APPLIED POLYMER SCIENCE
	2015
关键词	crystallization phase behavior polyamides DIFFERENTIAL SCANNING CALORIMETRY IMMISCIBLE POLYMER BLENDS POLYPROPYLENE ALPHA-PHASE SIZED PA6 DROPLETS ISOTACTIC POLYPROPYLENE CRYSTAL-STRUCTURE MECHANICAL-PROPERTIES DISPERSED MICROMETER POLYAMIDE 6 BEHAVIOR
DOI	10.1002/app.42413
英文摘要	The effect of thermal treatment over a wide range of temperature (130-280 degrees C) on the crystallization behavior of nylon 6 was studied by using DSC, FTIR, and polarized light microscope equipped with a hot stage. The crystallization and the subsequent melting behavior of the nylon 6 samples treated at different temperatures (T-s) were classified into four types. When T-s was higher than 236 degrees C or lower than 213 degrees C, the crystallization behavior of nylon 6 was insensitive to the variation of T-s. When T-s was in the range of 213-235 degrees C, the crystallization behavior was sensitive to the change of T-s. The polarized light microscopic experiments have demonstrated that a large amount of tiny ordered nylon 6 segments/cluster persisted when nylon 6 film are heated to 231 degrees C. Consequently, the fastest crystallization speed was observed. As T-s was between 214 and 223 degrees C, both the T-m and the Delta H-m were higher than those of the nylon 6 samples treated at other temperature. The polarized light microscopic investigations have also demonstrated that molten nylon 6 crystallizes by using the un-molten nylon 6 crystals as nucleation center at 220 degrees C. Crystallization at higher temperature produces nylon 6 with thicker crystalline lamella. The above results are helpful for rational design of thermal treatment procedure to obtain nylon 6 with different crystalline features. (C) 2015 Wiley Periodicals, Inc.; National Natural Science Foundation of China [NSFC51373003, NSFC50403026, NSFC20671007]; National Research Center of the Polish Ministry of Science and Higher Education [N N204 354840]; Henan Province [2011B150015, 134300510054, 201310]; SCI(E); EI; ARTICLE; xyz@pku.edu.cn; 35; 132
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/416307]
专题	化学与分子工程学院
推荐引用方式 GB/T 7714	Li, Huizhen,Guo, Ran,Liu, Yuhai,et al. Self-nucleation-induced nonisothermal crystallization of nylon 6 from the melt[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2015.
APA	Li, Huizhen.,Guo, Ran.,Liu, Yuhai.,Liu, Shaoxuan.,Proniewicz, Edyta.,...&Wu, Jinguang.(2015).Self-nucleation-induced nonisothermal crystallization of nylon 6 from the melt.JOURNAL OF APPLIED POLYMER SCIENCE.
MLA	Li, Huizhen,et al."Self-nucleation-induced nonisothermal crystallization of nylon 6 from the melt".JOURNAL OF APPLIED POLYMER SCIENCE (2015).