Formation of transcrystallinity and characterization of its nanoscale mechanical properties in bamboo fiber-anchored nano-TiO2/polypropylene composites

Luan, Yu; Fang, Carol; Wang, Hankun; Yu, Yan; Fei, Baowei; Xu, Dianguo; Ren, Dan

doi:10.1007/s00226-022-01428-4

Cited by 2 publications

(8 citation statements)

References 52 publications

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“…Fiber bundles with widths of ~50 μm were cut from the longitudinal section under a microscope. [30] Preparation of Bamboo Fiber@Nano-TiO 2…”

Section: Preparation Of Bamboo Fibermentioning

confidence: 99%

“…The PP film with a thickness of 0.1 μm was prepared with a hot‐pressing (CARVER3895, America) under 20 MPa for 5 min at 190 °C. The sandwich‐like samples (PP film‐BF or BF@TiO 2 ‐PP film, the detailed information about the sandwich‐like sample preparation was described by Luan et al [30] …”

Section: Experimental Processmentioning

confidence: 99%

“…The bamboo tube was cut into longitudinal slices (thickness=25 μm) using a slide‐away microtome (RM2125RTS, Leica, Germany). Fiber bundles with widths of ~50 μm were cut from the longitudinal section under a microscope [30] …”

Section: Experimental Processmentioning

confidence: 99%

“…[29] Recently, our research team found that the BF incorporated with nano-TiO 2 (BF@TiO 2 ) could effectively facilitate the formation of the TCL in the PP matrix. [30] Those studies focused on discussing the effect of the factors (e. g., isothermal temperature and time) on the TCL formation, while the nucleation kinetics of TCL in BF-reinforced semicrystalline polymer composites were barely reported. Herein, we investigated the transcrystallization behavior at the interface between PP and BF@TiO 2 using polarized optical microscopy (POM).…”

Section: Introductionmentioning

confidence: 99%

“…Surface modification of BF, e. g., slight alkali treatment, [27] acetylation of BF, [28] as well as adding maleic anhydride grafted polypropylene could improve the heterogeneous nucleating ability of BF and finally construct TCL in composites [29] . Recently, our research team found that the BF incorporated with nano‐TiO 2 (BF@TiO 2 ) could effectively facilitate the formation of the TCL in the PP matrix [30] . Those studies focused on discussing the effect of the factors (e. g., isothermal temperature and time) on the TCL formation, while the nucleation kinetics of TCL in BF‐reinforced semicrystalline polymer composites were barely reported.…”

Section: Introductionmentioning

confidence: 99%

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Origin and Nucleation Kinetics of Transcrystalline Layer in Bamboo fiber@nano‐TiO₂/Polypropylene Composite

Luo,

Luan,

Wang

et al. 2024

ChemistrySelect

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Herein origin and nucleation kinetics of transcrystalline layer (TCL) in bamboo fiber deposited with nano‐TiO2 (BF@TiO2)/polypropylene (PP) composite is studied. Firstly, the surface morphology, roughness, and energy, as well as crystalline structure (e. g., crystal face indices (hkl)) of BF@TiO2 are analyzed to clarify the origin of TCL in the composite. Subsequently, the nucleation kinetics of TCL in BF@TiO2/PP composite at different crystallization temperatures (Tc) are investigated through polarized optical microscopy. The results find that the surface roughness and energy of BF@TiO2 increase by 47.55 % and 2.41 % compared with untreated BF, respectively. Interestingly, the mismatch rates (MRs) of hkl(BF) vs. hkl(PP) are >320 %. In comparison, the MRs of (101)(BF@TiO2)TiO2 vs. (hkl)(PP) are dramatically decreased to <25 %, suggesting a similar crystal plane between BF@TiO2 and PP matrix. These results indicate that the TCL formation in the composite is more facile in BF@TiO2 than in the untreated BF. During isothermal crystallization, the nucleation and spherulite growth rates decrease as the Tc increases. The interface free energy difference (▵σ) between BF@TiO2 and PP is calculated based on the heterogeneous nucleation theory. The ▵σ is 1.54±0.11 J cm−2, highlighting that the BF@TiO2 strongly induces the PP nucleation.

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“…Fiber bundles with widths of ~50 μm were cut from the longitudinal section under a microscope. [30] Preparation of Bamboo Fiber@Nano-TiO 2…”

Section: Preparation Of Bamboo Fibermentioning

confidence: 99%

Section: Experimental Processmentioning

confidence: 99%

Section: Experimental Processmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Origin and Nucleation Kinetics of Transcrystalline Layer in Bamboo fiber@nano‐TiO₂/Polypropylene Composite

Luo,

Luan,

Wang

et al. 2024

ChemistrySelect

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Effect of Nanoalumina on Physical and Thermal Properties of Polypropylene-Glass Fiber Reinforced Nanocomposites

et al. 2023

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The present study examines the effect of nanoalumina on the mechanical and thermal properties of glass fiber and elastomer reinforced PP/EPDM/GF/Al2O3 with an aim to develop suitable composite material for orthotics. In present study, PP/GF, PP/EPDM/GF composite and PP/EPDM/GF/Al2O3 nanocomposites with specific composition were fabricated using melt-blending technique. Prepared composites were characterized through scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC). The mechanical characteristics including tensile strength, tensile modulus, notched Izod impact strength and elongation at break of the prepared composite were studied in accordance with ASTM guidelines. PP/EPDM/GF/Al2O3 composites showed the mechanical properties of PP/EPDM/GF/Al2O3 composites showed 62%, 145%, 15% and 165% enhancement in tensile strength, tensile modulus, notched Izod impact strength and elongation at break, respectively as compared to PP/GF composites. The mechanical properties and thermal properties of PP/EPDM/GF/Al2O3 were also compared with PP/EPDM/GF composites. The use of nanoalumina significantly and brilliantly balances the complimentary tensile and elongation properties in PP/EPDM/GF/Al2O3 composite, which is an essential requirement for fabricating composite material capable of being thermoformed to orthotic devices.

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Formation of transcrystallinity and characterization of its nanoscale mechanical properties in bamboo fiber-anchored nano-TiO2/polypropylene composites

Cited by 2 publications

References 52 publications

Origin and Nucleation Kinetics of Transcrystalline Layer in Bamboo fiber@nano‐TiO₂/Polypropylene Composite

Origin and Nucleation Kinetics of Transcrystalline Layer in Bamboo fiber@nano‐TiO₂/Polypropylene Composite

Effect of Nanoalumina on Physical and Thermal Properties of Polypropylene-Glass Fiber Reinforced Nanocomposites

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Formation of transcrystallinity and characterization of its nanoscale mechanical properties in bamboo fiber-anchored nano-TiO2/polypropylene composites

Cited by 2 publications

References 52 publications

Origin and Nucleation Kinetics of Transcrystalline Layer in Bamboo fiber@nano‐TiO2/Polypropylene Composite

Origin and Nucleation Kinetics of Transcrystalline Layer in Bamboo fiber@nano‐TiO2/Polypropylene Composite

Effect of Nanoalumina on Physical and Thermal Properties of Polypropylene-Glass Fiber Reinforced Nanocomposites

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Origin and Nucleation Kinetics of Transcrystalline Layer in Bamboo fiber@nano‐TiO₂/Polypropylene Composite

Origin and Nucleation Kinetics of Transcrystalline Layer in Bamboo fiber@nano‐TiO₂/Polypropylene Composite