scholarly journals Ordered structure effects on β-nucleated isotactic polypropylene/graphene oxide composites with different thermal histories

RSC Advances ◽  
2019 ◽  
Vol 9 (34) ◽  
pp. 19630-19640 ◽  
Author(s):  
Yansong Yu ◽  
Ruizhang Xu ◽  
Jinyao Chen ◽  
Jian Kang ◽  
Ming Xiang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Isotactic Polypropylene ◽  
Ordered Structure ◽  
Crystallization Behaviors ◽  
Thermal Histories ◽  
Oxide Composites

In this paper, the influence of ordered structure effects on crystallization behaviors of β-nucleated isotactic polypropylene/graphene oxide composites with different thermal histories was studied.

Regulating polycrystalline behavior of the β-nucleated isotactic polypropylene/graphene oxide composites by melt memory effect

2018 ◽  
Vol 40 (S1) ◽  
pp. E440-E448 ◽  
Author(s):  
Yansong Yu ◽  
Fangxinyu Zeng ◽  
Jinyao Chen ◽  
Jian Kang ◽  
Feng Yang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Memory Effect ◽  
Isotactic Polypropylene ◽  
Oxide Composites

Rheology and non-isothermal crystallization behaviors of poly(butylene succinate)/graphene oxide composites

2014 ◽  
Vol 293 (2) ◽  
pp. 389-400 ◽  
Author(s):  
Xue-chong Du ◽  
Yang-peng Wang ◽  
Wen-bin Huang ◽  
Jing-hui Yang ◽  
Yong Wang
Keyword(s):  
Graphene Oxide ◽  
Isothermal Crystallization ◽  
Butylene Succinate ◽  
Crystallization Behaviors ◽  
Oxide Composites

scholarly journals Investigation on the Effect of Hyperbranched Polyester Grafted Graphene Oxide on the Crystallization Behaviors of β-Nucleated Isotactic Polypropylene

Polymers ◽  
2019 ◽  
Vol 11 (12) ◽  
pp. 1988 ◽  
Author(s):  
Yansong Yu ◽  
Xi Jiang ◽  
Yiwei Fang ◽  
Jinyao Chen ◽  
Jian Kang ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Isotactic Polypropylene ◽  
Photoelectron Spectroscopy ◽  
Crystallization Process ◽  
Hyperbranched Polyester ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Crystallization Behaviors ◽  
Transmission Electron

In this article, hyperbranched polyester grafted graphene oxide (GO) was successfully prepared. X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis (TGA), and transmission electron microscopy (TEM) were performed for its characterizations. On the other hand, differential scanning calorimetry (DSC) and wide-angle X-ray diffraction (WAXD) were also performed to study its influences on non-isothermal crystallization behaviors of β-nucleated isotactic polypropylene (β-iPP). The grafting ratios of hyperbranched polyester with different supermolecular structures were calculated to be 19.8–24.0 wt %, which increase with the degree of branching. The results showed that the grafting of hyperbranched polyester was advantageous in increasing the crystallization peak temperature Tp and decreasing the crystallization activation energy ΔE of β-iPP/GO composites, which contributed to the iPP’s crystallization process. Moreover, under all cooling rates (2, 5, 10, 20, 40 °C/min), crystallinities of β-iPP/GO were greatly improved after being grafted with hyperbranched polyester, because of the increase of the relative contents of α-phase αc and the average α-crystal sizes.

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