Effect of an aryl amide derivative on the crystallization behaviour and impact toughness of poly(ethylene terephthalate). Issue 12 (2nd March 2016)

• Record Type: Journal Article
• Authors: Shen, Zhiyuan; Luo, Faliang; Xing, Qian; Si, Pengfei; Lei, Xiaomei; Ji, Lijie; Ding, Shengfang; Wang, Kezhi
• Is Part Of: CrystEngComm. Volume 18:Issue 12(2016)
• Page Start: 2135
• Page End: 2143
• Publication Date: 2016-03-02
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c6ce00114a
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : An aryl amide derivative (TMB-5) can significantly enhance the crystallization behavior and impact toughness of poly(ethylene terephthalate). Abstract : Poly(ethylene terephthalate) (PET) and aryl amide derivative (TMB-5) blends were prepared by melt blending. It was found that TMB-5 shows a significant nucleation effect on PET and especially the non-isothermal nucleation efficiency reached up to 80.7% at a very low content of 0.6 wt% TMB-5. The effects of TMB-5 on the crystallization behavior and mechanical properties of PET were systematically investigated. DSC results show that crystallization temperature of PET apparently increased by nearly 20 °C with the addition of 0.6 wt% TMB-5 during the cooling process. A remarkable acceleration in the crystallization rate of PET was achieved as analyzed using the Avrami equation. Wide angle X-ray diffraction (WAXD) and polarized optical microscopy (POM) results show that the addition of TMB-5 remarkably increases the crystallinity and nuclei density of PET. Small angle X-ray scattering (SAXS) measurements reveal that the long period of PET decreased and lamellar thickness increased with an increase in TMB-5 content. The impact strength of PET was greatly enhanced by the addition of TMB-5, and a toughening mechanism was proposed.