Investigation of the crystallization and mechanical properties of wood fiber/polypropylene composites nucleated by a self-assembly β-nucleating agent

Lv, Chao; Luo, Saiyu; Guo, Wenjing

doi:10.1007/s00289-022-04313-z

Cited by 5 publications

(2 citation statements)

References 25 publications

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“…The toughness, elongation at break, and heat resistance of the wood-flour-filled polypropylene composites were improved by introducing β-nucleating agents [ 164 , 165 , 166 , 167 , 168 ]; this also indicates the direction for the application of wood-flour-filled polypropylene composites.…”

Section: Composite Of Pp With β-Nucleating Agentsmentioning

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: Composite Of Pp With β-Nucleating Agentsmentioning

confidence: 99%

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

Xiulin

et al. 2023

Polymers

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“…Figure 6 shows the XRD spectra of iPP and 1 wt% nano-Lig/iPP composite. iPP showed typical α-crystal difraction peaks at 2θ � 14.1 °, 16.8 °, 18.5 °, 21.1 °, and 21.8 °, which was related to (110), (040), ( 130), (131), and (111) crystalline planes, respectively [55][56][57]. Te characteristic peaks of 1 wt% nano-Lig/iPP composite were similar to those of iPP, indicating that the nano-Lig's efects on the crystallization behavior of iPP were negligible, and the crystalline structure of iPP remained unchanged in the composite.…”

Section: X-ray Difraction Analysismentioning

confidence: 99%

Nanolignin as Nucleating Agents Promoting Crystallization of Isotactic Polypropylene

Chen

Yang

Zhu

et al. 2023

Polymer Crystallization

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Lignin is the second most abundant pollution-free biomass material. However, most of lignin is discarded as waste in river or burned as fuel, which results in serious environmental pollution problems and low utilization efficiency of lignin at present. Thus, high-value utilization of lignin has become a hot research field. Herein, nanolignin (nano-Lig) is prepared successfully by the self-assembly method, and then nano-Lig and isotactic polypropylene (iPP) are mixed to prepare a series of nano-Lig/iPP composites by the solution blending method. Nano-Lig not only enhance thermostability of iPP but also improve crystallization properties of iPP. When 1.0 wt% nano-Lig was added in iPP, the crystallinity of iPP increased by 6.39% compared to iPP. Nano-Lig can increase the crystallization rate of iPP through investigation of kinetics of nonisothermal crystallization, suggesting nano-Lig can be used as a nucleating agent for iPP.

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Effect of annealing treatment on impact toughness and crystallization behaviors of polypropylene/ethylene vinyl acetate copolymer/layered double hydroxide composites

Guo,

Lian,

Qin

et al. 2024

Polymer Composites

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This research endeavors to explore the potential of annealing treatment as a viable strategy to optimize the utilization of polypropylene (PP) composites, while preserving their exceptional properties. By incorporating ethylene vinyl acetate (EVA) copolymer and layered double hydroxide (LDH) into PP, this work meticulously analyzes the changes in crystallization behaviors and impact properties under varying annealing conditions. Impact strength is systematically assessed by a digital pendulum impact tester, whereas the crystalline structure is analyzed through polarized light optical microscopy (POM), differential scanning calorimetry (DSC), and x‐ray diffraction (XRD). The notch impact test exhibits a gradual increase in impact strength from 100 to 130°C, followed by a decline at 140°C. The XRD and DSC results elucidate subtle β‐crystal diffraction peaks for PP/EVA and PP/EVA/LDH composites, attributed to the transformative effect of EVA and LDH on PP crystals. POM analysis further unveils a reduction in spherical crystal size and gradual blurring of grain boundaries during the annealing process.Highlights PP/EVA/LDH composites are effectively regulated by changing the annealing treatment conditions. The crystallization behaviors and crystal structure of PP are induced due to synergistic effect of EVA and LDH under annealing treatment. The toughness of PP is enhanced significantly by synergistic effect of EVA and LDH under annealing treatment.

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Investigation of the crystallization and mechanical properties of wood fiber/polypropylene composites nucleated by a self-assembly β-nucleating agent

Cited by 5 publications

References 25 publications

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

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

Nanolignin as Nucleating Agents Promoting Crystallization of Isotactic Polypropylene

Effect of annealing treatment on impact toughness and crystallization behaviors of polypropylene/ethylene vinyl acetate copolymer/layered double hydroxide composites

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