Effect of pimelic acid-based nucleating agents on the structure and properties of isotactic polypropylene

2021 ◽  
Author(s):  
S. N. Malakhov ◽  
A. I. Buzin ◽  
V. A. Demina ◽  
S. N. Chvalun
Keyword(s):  
Isotactic Polypropylene ◽  
Pimelic Acid ◽  
Nucleating Agents ◽  
Structure And Properties

scholarly journals Nucleating agents based on graphene and graphene oxide for crystallization of the β-form of isotactic polypropylene

2019 ◽  
Vol 55 (4) ◽  
pp. 1436-1450 ◽  
Author(s):  
Jan Broda ◽  
Marcin Baczek ◽  
Janusz Fabia ◽  
Dorota Binias ◽  
Ryszard Fryczkowski
Keyword(s):  
Graphene Oxide ◽  
Reduced Graphene Oxide ◽  
Isotactic Polypropylene ◽  
Reduced Form ◽  
Pimelic Acid ◽  
Nucleating Agents ◽  
Scanning Calorimetry ◽  
Functionalized Graphene Oxide ◽  
Reduced Graphene ◽  
Carboxylic Groups

Abstract During the investigations, functionalization of graphene oxide synthesized using modified Hummers’ method and its reduced form was performed. Mixtures of graphene oxide and reduced graphene oxide with pimelic acid and calcium hydroxide were prepared for functionalization. During the reaction, the molecules of pimelic acid were attached to the surface of graphene sheets. By forming links between the carboxylic groups of pimelic acid and graphene oxide, the durable connection was achieved. The functionalized graphene oxide and the reduced graphene oxide were used as additives in isotactic polypropylene crystallization. The influence of additives on crystallisation in non-isothermal conditions was examined using polarized optical microscopy and differential scanning calorimetry. The effect of the additives on the polypropylene structure was analysed using wide-angle X-ray scattering. For both functionalized compounds, the nucleating ability towards β-form of polypropylene was detected. Both additives showed the increase in the nucleation rate and promotion of growth of the β-form crystals. Nucleation efficiency similar to other nucleating agents used in the crystallization of the β-form of polypropylene was revealed.

Competition between α and β Crystallization in Isotactic Polypropylene: Effect of Nucleating Agents Composition

2015 ◽  
Vol 30 (3) ◽  
pp. 344-349
Author(s):  
S.-W. Wang ◽  
Y.-T. Leng ◽  
J. Jiang ◽  
G.-Q. Zheng ◽  
Q. Li
Keyword(s):  
Isotactic Polypropylene ◽  
Nucleating Agents

Copper-containing nanocomposites on the basis of isotactic polypropylene and butadiene-nitrile rubber

2021 ◽  
Vol 5 ◽  
pp. 76-81
Author(s):  
N.I. Kurbanova ◽  
◽  
S. K. Ragimova ◽  
N. A. Alimirzoeva ◽  
N. Ya. Ishenko ◽  
...  
Keyword(s):  
Isotactic Polypropylene ◽  
Thermal Analyses ◽  
Nitrile Rubber ◽  
Polymer Composition ◽  
Rheological Parameters ◽  
Structure And Properties ◽  
Pressing Method ◽  
X Ray ◽  
High Pressure Polyethylene ◽  
Butadiene Nitrile Rubber

The influence of additives of nanofillers (NF) containing nanoparticles of copper oxides stabilized by a polymer matrix of high-pressure polyethylene (PE) obtained by the mechanochemical method on the structure and properties features of metal-containing nanocomposites based on isotactic polypropylene (PP) and butadiene-nitrile rubber (BNK) is studied by X-ray phase (XRD) and differential thermal analyses(DTA). The improvement of strength, deformation and rheological parameters, as well as thermal-oxidative stability of the obtained nanocomposites was revealed, which, apparently, is associated with the synergistic effect of interfacial interaction of copper-containing nanoparticles in the PE matrix with the components of the PP/BNK polymer composition. It is shown that nanocomposites based on PP/BNK/NF can be processed both by pressing method and by injection molding and extrusion methods, which expands the scope of its application.

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