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受限条件下PA6的结晶动力学研究

发表时间:2012-05-15  浏览量:1175  下载量:509
全部作者: 吉亚丽,梁凯,梁伯润
作者单位: 东华大学材料科学与工程学院;东华大学化学化工与生物工程学院
摘 要: 采用原位聚合/原位增容的共混技术制备聚苯醚/尼龙6[poly(2,6-dimethyl-1,4-phenylene oxide)/polyamide 6,PPO/PA6]纳米共混物,利用差示扫描量热分析和广角X射线衍射(wide angle X-ray diffraction, WAXD)分别研究了PA6在受限条件下的结晶行为。研究发现:PA6在微米尺度的孤立相畴中的结晶主要生成α晶型和少量γ晶型;PA6在纳米尺度的相畴中结晶时,生成较多γ晶型;通过非等温结晶动力学以及Kissinger公式分析,发现在纳米共混物中PA6结晶速率较快,更易结晶。
关 键 词: 材料物理与化学;受限结晶;结晶动力学;PA6;纳米共混
Title: Study on crystallization kinetics of PA6 in confined domains
Author: JI Yali, LIANG Kai, LIANG Borun
Organization: College of Materials Science and Engineering, Donghua University; College of Chemistry, Chemical Engineering and Biotechnology, Donghua University
Abstract: In this study, the nanoblends of poly (2,6-dimethyl-1,4-phenylene oxide)/polyamide 6 (PPO/PA6) were prepared by the method of in situ polymerization and in situ compatibility, and the confined crystallization behavior of PA6 was studied using differential scanning calorimetry and wide angle X-ray diffraction (WAXD). It was found that there coexisted α-type and a small quantity of γ-type crystals in the micrometer-sized confined domains; however, a large amount of γ-type crystals was formed in the nanometer-sized confined domains. According to non-isothermal crystallization kinetics and Kissinger formula, it was concluded that PA6 was easy to crystallize in the nanoblends.
Key words: material physics and chemistry; confined crystallization; crystallization kinetics; PA6; nanoblend
发表期数: 2012年5月第9期
引用格式: 吉亚丽,梁凯,梁伯润. 受限条件下PA6的结晶动力学研究[J]. 中国科技论文在线精品论文,2012,5(9):820-824.
 
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