Non-isothermal crystallization kinetics of Nylon 10T and Nylon 10T/1010 copolymers:Effect of sebacic acid as a third comonomer  

作　　者：Zhongqiang Wang Guosheng Hu Jingting Zhang Jiusheng Xu Wenbo Shi 

机构地区：[1]Institute of Macromolecules and Bioengineering,School of Materials Science and Engineering,North University of China,Taiyuan 030051,China [2]Guongdong SinoplastAdvanced Material Co.Ltd.,Dongguon 523860,China

出　　处：《Chinese Journal of Chemical Engineering》2017年第7期963-970,共8页中国化学工程学报（英文版）

基　　金：Supported by the National Science and Technology Support Program of China(No.2013BAE02B01);the Special Project on the Integration of Industry,Education and Research of Guangdong Province(No.2013B090500003);the Commissioner Workstation Project of Guangdong Province(No.2014A090906002)

摘　　要：Nylon 10 T and Nylon 10T/1010 samples were synthesized by direct melt polymerization. The non-isothermal crystallization kinetics of Nylon 10 T and Nylon 10T/1010 was investigated by means of differential scanning calorimetry(DSC). Jeziorny equation and Mo equation were applied to describe the non-isothermal crystallization kinetics of the Nylon 10 T and the Nylon 10T/1010. The activation energies for non-isothermal crystallization were obtained by Vyazovkin's method and Friedman's method, respectively. These results showed that Jeziorny equation and Mo equation well described the non-isothermal crystallization kinetics of the Nylon 10 T and the Nylon 10T/1010. It was found that the values of the activation energy for non-isothermal crystallization of the Nylon 10T/1010 were lower than those of the Nylon 10 T at a given temperature or relative crystallinity degree,which revealed that crystallization ability of the Nylon 10T/1010 was higher. The crystal morphology was observed by means of a polarized optical microscope(POM) and X-ray diffraction(XRD). It was found that the addition of sebacic acid comonomer not only did not change the crystal form of the Nylon 10 T, but also significantly increased the number and decreased the size of spherulites. Comparing with the Nylon 10 T, the crystallization rate was increased with the addition of the sebacic acid comonomer.Nylon 10 T and Nylon 10T/1010 samples were synthesized by direct melt polymerization. The non-isothermal crystallization kinetics of Nylon 10 T and Nylon 10T/1010 was investigated by means of differential scanning calorimetry（DSC）. Jeziorny equation and Mo equation were applied to describe the non-isothermal crystallization kinetics of the Nylon 10 T and the Nylon 10T/1010. The activation energies for non-isothermal crystallization were obtained by Vyazovkin＇s method and Friedman＇s method, respectively. These results showed that Jeziorny equation and Mo equation well described the non-isothermal crystallization kinetics of the Nylon 10 T and the Nylon 10T/1010. It was found that the values of the activation energy for non-isothermal crystallization of the Nylon 10T/1010 were lower than those of the Nylon 10 T at a given temperature or relative crystallinity degree,which revealed that crystallization ability of the Nylon 10T/1010 was higher. The crystal morphology was observed by means of a polarized optical microscope（POM） and X-ray diffraction（XRD）. It was found that the addition of sebacic acid comonomer not only did not change the crystal form of the Nylon 10 T, but also significantly increased the number and decreased the size of spherulites. Comparing with the Nylon 10 T, the crystallization rate was increased with the addition of the sebacic acid comonomer.

关 键 词：Melt polymerization Nylon 10TNylon 10T/1010 Semiaromatic polyamides Crystallization kinetics Non-isothermal crystallization 

分 类 号：O631.13[理学—高分子化学] TQ323.6[理学—化学]