On isotactic polypropylene annealing: Difference in final properties of neat and β-nucleated polypropylene

Gajzlerova, Lenka; Navrátilová, Jana; Zenzingerova, Sona; Jaska, David; Beníček, Lubomír; Kudláček, Michal; Čermák, Roman; Obadal, Martin

doi:10.3144/expresspolymlett.2022.34

Cited by 3 publications

(3 citation statements)

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“…It is not an easy thing to obtain a PP with a high content of β-crystals. In addition, during induction growth and processing, β-crystals may be transformed into α-, γ-, or even mesophase crystals [ 123 , 124 , 125 ] under different shear force and thermal conditions. How one is to improve the nucleation efficiency of β-crystals and obtain a high content of β-crystal polypropylene has always been the direction of people’s efforts.…”

Section: Nucleating Efficiency Of β-Crystalsmentioning

confidence: 99%

β-Nucleated Polypropylene: Preparation, Nucleating Efficiency, Composite, and Future Prospects

Xiulin

et al. 2023

Polymers

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The β-crystals of polypropylene have a metastable crystal form. The formation of β-crystals can improve the toughness and heat resistance of a material. The introduction of a β-nucleating agent, over many other methods, is undoubtedly the most reliable method through which to obtain β-PP. Furthermore, in this study, certain newly developed β-nucleating agents and their compounds in recent years are listed in detail, including the less-mentioned polymer β-nucleating agents and their nucleation characteristics. In addition, the various influencing factors of β-nucleation efficiency, including the polymer matrix and processing conditions, are analyzed in detail and the corresponding improvement measures are summarized. Finally, the composites and synergistic toughening effects are discussed, and three potential future research directions are speculated upon based on previous research.

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Section: Nucleating Efficiency Of β-Crystalsmentioning

confidence: 99%

β-Nucleated Polypropylene: Preparation, Nucleating Efficiency, Composite, and Future Prospects

Xiulin

et al. 2023

Polymers

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“…A number of studies reported that the physical filling method is employed frequently because of its simplicity, cost‐effectiveness, and rapid results 15,16 . After adding β ‐nucleating agent to PP, the nucleation rate increases, inducing the β ‐crystalline form of PP with a loose structure and gaps between crystals; hence, the toughness of PP is improved, and its impact toughness is increased 17–20 . Ren et al 21 added different metal adipate salts to isotactic polypropylene (iPP) to investigate its β crystal form and nucleation efficiency and reported that ZnAA is an efficient nucleating agent that can promote iPP to form the β ‐crystalline form.…”

Section: Introductionmentioning

confidence: 99%

“…15,16 After adding β-nucleating agent to PP, the nucleation rate increases, inducing the β-crystalline form of PP with a loose structure and gaps between crystals; hence, the toughness of PP is improved, and its impact toughness is increased. [17][18][19][20] Ren et al 21 added different metal adipate salts to isotactic polypropylene (iPP) to investigate its β crystal form and nucleation efficiency and reported that ZnAA is an efficient nucleating agent that can promote iPP to form the β-crystalline form. At the same time, the addition of inorganic rigid particles to iPP can toughen and modify PP; however, the disadvantage of this method is that rigid particles can easily undergo agglutination in the PP matrix and exhibit poor dispersion, which can only improve PP performance to a certain extent; hence, it is difficult to meet the production requirements.…”

Section: Introductionmentioning

confidence: 99%

High‐quality modification of general polypropylene by the synergistic effect of zinc adipate, hydrotalcite, and polypropylene (SP179)

Shen

Chen

Kou

2023

J of Applied Polymer Sci

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Owing to its excellent mechanical properties and good fluidity, polypropylene (PP) exhibits widespread applications; however, its unsatisfactory impact resistance hinders its further application. In this study, as a β-nucleating agent, zinc adipate (ZnAA) was produced by the solution method. Next, the notch impact strength, melting index, and tensile strength of isotactic polypropylene (iPP) were adopted as indices, and ZnAA, hydrotalcite (HT), and PP (SP179) were added into iPP to modify it and render high performance. Furthermore, the structure and properties of modified PP were investigated by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, and differential scanning calorimetry, as well as on an electronic universal material testing machine and a simple-beam impact testing machine. Finally, the nonisothermal crystallization kinetics of modified iPP was investigated by the Caze method. Results revealed that with the increase in the SP179 content to 50%, the maximum values of the notch impact strength and melting index of iPP of 26.01 KJ m À2 and 9.88 g (10 min) À1 , respectively, are achieved, with a tensile strength of 28.22 MPa, and ZnAA, HT, and PP (SP179) have a synergistic effect on iPP modification. These results suggested that modified PP can be applied in more extensive fields, such as fenders, bumpers, and interior parts, with cost-effectiveness.

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Blends of Polypropylene: The Influence of Specific Nucleation and Branching on Polymorphism and End-Use Properties at Injection Molding Conditions

Gajzlerova,

Navratilova,

Polaskova

et al. 2024

Preprint

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On isotactic polypropylene annealing: Difference in final properties of neat and β-nucleated polypropylene

Cited by 3 publications

References 0 publications

β-Nucleated Polypropylene: Preparation, Nucleating Efficiency, Composite, and Future Prospects

β-Nucleated Polypropylene: Preparation, Nucleating Efficiency, Composite, and Future Prospects

High‐quality modification of general polypropylene by the synergistic effect of zinc adipate, hydrotalcite, and polypropylene (SP179)

Blends of Polypropylene: The Influence of Specific Nucleation and Branching on Polymorphism and End-Use Properties at Injection Molding Conditions

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