Application of a novel cavity nucleating agent based on cyclodextrin in polymer foaming materials and in situ visual injection moulding study

2021 ◽  
Author(s):  
Yuhui Zhou ◽  
Li He ◽  
Wei Gong
Keyword(s):  
Injection Moulding ◽  
Nucleating Agent ◽  
Agent Based ◽  
Polymer Foaming

Synthesis and Characterizations of Poly(Butylene Succinate) Copolyester

2014 ◽  
Vol 1015 ◽  
pp. 381-384
Author(s):  
Li Liu ◽  
Li Hai Cai ◽  
Dan Liu ◽  
Jun Xu ◽  
Bao Hua Guo
Keyword(s):  
Mechanical Properties ◽  
Polymer Matrix ◽  
Crystallization Temperature ◽  
In Situ Polymerization ◽  
Nucleating Agent ◽  
Single Fiber ◽  
Butylene Succinate ◽  
Crystallization Behaviors ◽  
Polymerization Method

The poly (butylene succinate) (PBS) and 3 wt% attapulgite (ATP) reinforced PBS/ATP nanocomposites with 1,6-hexanediol were fabricated using an in situ polymerization method. The crystallization behaviors indicated that ATP had effectively acted as nucleating agent, resulting in the enhancement on the crystallization temperature. The SEM results showed a superior interfacial linkage between ATP and PBS. Also, ATP could disperse as a single fiber and embed in the polymer matrix, which resulted in the improved mechanical properties.

Crystallization Behavior of Polyethylene/Montmorillonite Nanocomposites Prepared by In Situ Polymerization

2012 ◽  
Vol 184-185 ◽  
pp. 932-935
Author(s):  
Min Li ◽  
Li Guang Xiao ◽  
Hong Kai Zhao
Keyword(s):  
Differential Scanning Calorimetry ◽  
Crystallization Behavior ◽  
Crystallization Process ◽  
In Situ Polymerization ◽  
Nucleating Agent ◽  
Lower Content ◽  
Melting Points ◽  
Scanning Calorimetry ◽  
Montmorillonite Nanocomposites

Polyethylene/montmorillonite (PE/MMT) nanocomposites were prepared by in situ polymerization. The crystallization behavior of PE/MMT nanocomposites at different MMT concentrations (from 0.1 to 1.2 wt %) were investigated by differential scanning calorimetry (DSC). The equilibrium melting points increase by the addition of MMT. The crystallization rates of PE/MMT nanocomposites are faster than those of pure PE. The addition of MMT facilitated the crystallization of PE, with the MMT functioning as a heterogeneous nucleating agent at lower content; at higher concentrations, however, the physical hindrance of the MMT layers to the motion of PE chains retarded the crystallization process.

In situ generation of a self-dispersed β-nucleating agent with increased nucleation efficiency in isotactic polypropylene

Polymer ◽  
2018 ◽  
Vol 151 ◽  
pp. 84-91 ◽  
Author(s):  
Shicheng Zhao ◽  
Wei Qin ◽  
Zhong Xin ◽  
Shuai Zhou ◽  
Hanzhang Gong ◽  
...  
Keyword(s):  
Isotactic Polypropylene ◽  
Nucleating Agent ◽  
In Situ Generation

scholarly journals A Multiscale Agent-Based Model of Ductal Carcinoma In Situ

2020 ◽  
Vol 67 (5) ◽  
pp. 1450-1461 ◽  
Author(s):  
Joseph D. Butner ◽  
David Fuentes ◽  
Bulent Ozpolat ◽  
George A. Calin ◽  
Xiaobo Zhou ◽  
...  
Keyword(s):  
Ductal Carcinoma In Situ ◽  
Carcinoma In Situ ◽  
Ductal Carcinoma ◽  
Agent Based Model ◽  
Agent Based

scholarly journals Crystalline Modification of Isotactic Polypropylene with a Rare Earth Nucleating Agent Based on Ultrasonic Vibration

Polymers ◽  
2019 ◽  
Vol 11 (11) ◽  
pp. 1777 ◽  
Author(s):  
Li ◽  
Xin ◽  
Song ◽  
Dong ◽  
Ben ◽  
...  
Keyword(s):  
Rare Earth ◽  
Isotactic Polypropylene ◽  
Nucleating Agent ◽  
Relative Content ◽  
Water Cooling ◽  
Crystalline Modification ◽  
X Ray Diffraction ◽  
Scanning Calorimetry ◽  
Agent Based ◽  
The Relationship

In this paper, the crystalline modification of isotactic polypropylene (PP) with a rare earth β nucleating agent (WBG) with different ultrasound conditions was investigated by scanning electron microscopy (SEM), wide-angle X-ray diffraction (XRD), and differential scanning calorimetry (DSC). The relationship between the ultrasound conditions and the crystalline structure, as well as the mechanism for the behavior, were revealed. SEM showed that the dispersion of the nucleating agent in the PP matrix was better at shorter ultrasound distances. In addition, the higher the water cooling temperature, the better the nucleating agent was dispersed in the PP matrix. The results of XRD and DSC showed that the crystallinity and the relative content of the β-crystal were increased with nearer ultrasound distance, as well as increased in higher water cooling temperatures. In particular, under the same conditions, the crystallinity and the relative content of the β-crystal after ultrasonic treatment were much higher than those without ultrasound.

In situ formation of zinc phthalate as a highly dispersed β-nucleating agent for mechanically strengthened isotactic polypropylene

2019 ◽  
Vol 358 ◽  
pp. 1243-1252 ◽  
Author(s):  
Wei Qin ◽  
Zhong Xin ◽  
Chunmeng Pan ◽  
Shibao Sun ◽  
Xiaofeng Jiang ◽  
...  
Keyword(s):  
Isotactic Polypropylene ◽  
Nucleating Agent ◽  
Highly Dispersed ◽  
In Situ Formation
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