Nano-TiO2 Modified Wheat Straw/Polylactic Acid Composites Based on Synergistic Effect Between Interfacial Bridging and Heterogeneous Nucleation

Liao, Chenggang; Chen, Kang; Li, Ping; Li, Xingong; Zuo, Yingfeng

doi:10.1007/s10924-022-02414-4

Cited by 7 publications

(2 citation statements)

References 38 publications

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“…Figure 4 reveals XRD patterns of the PLA and PLA/CF samples obtained by FFF approach. The diffraction peaks locations of the PLA/CF sample were same as those of the PLA sample, which illustrated the absent influence of CFs on the crystal type of PLA sample [ 24 ]. In addition, the new phase was not generated in the PLA/CF sample.…”

Section: Resultsmentioning

confidence: 99%

Preparation and Characterization for the Thermal Stability and Mechanical Property of PLA and PLA/CF Samples Built by FFF Approach

et al. 2023

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Currently, the mechanical performances of polylactic acid (PLA) samples prepared using the fused filament fabrication (FFF) technique are relatively poor. Hence, the carbon fiber (CF) is used to improve the thermal stability and mechanical property of FFF-ed PLA samples in this paper. The crystalline structure, thermal stability, melt flow rate, tensile strength and fractured surface morphology of PLA and PLA/CF samples were investigated with an X-ray diffraction device, differential scanning calorimeter, thermogravimetric analyzer, melt flow rate equipment, universal tensile test machine and scanning electron microscope, respectively. Meanwhile, the reinforcement mechanism of CF on the mechanical property of PLA samples was also analyzed. XRD results revealed that the diffraction peaks intensities of PLA/CF sample were obviously lower than those of PLA sample. TGA and DSC curves illustrated that the initial thermal decomposition temperature, thermal stability and crystallinity of the PLA/CF sample improved significantly. The tensile strength of the PLA/CF sample was 91.58 MPa, which was 42.49% higher than that of the PLA sample. Moreover, SEM images showed that the fractured behavior of the PLA sample varied from brittle fracture to ductile fracture after the introduction of CF. The results concluded the CF is a feasible fiber for enhancing the performances of the PLA sample.

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Section: Resultsmentioning

confidence: 99%

Preparation and Characterization for the Thermal Stability and Mechanical Property of PLA and PLA/CF Samples Built by FFF Approach

et al. 2023

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“…Liao Chenggang blended different particle sizes of nano TiO 2 with molten PLA to modify wheat straw fibers, resulting in a composite material modified with nano TiO 2 . Mechanism studies have shown that nano TiO 2 enhances the interfacial compatibility of composite materials by promoting heterogeneous nucleation and rapid crystallization of polylactic acid [4]. Hou Xuebin deposited TiO 2 nanoparticles on the porous electrospun PLA fiber substrate, and compared with powdered TiO 2 , the composite fibers loaded with TiO 2 exhibited significant photocatalytic activity [5].…”

Section: Introductionmentioning

confidence: 99%

Study on Preparation, Properties, and Degradation Behavior of Nano-Tio2/PolyLactic Acid Composites

2023

AJMC

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As a semiconductor material, nano TiO 2 has important application value in various professional fields. Single nano TiO 2 has low light utilization and poor degradability. In order to improve the sustainability of material development, enhance the application value and performance of materials, this article combined polylactic acid (PLA) with nano TiO 2 to form a composite material, and studied its preparation, characterization, and degradation behavior. This article first analyzed the characteristics of nano TiO 2 and polylactic acid materials, then prepared and modified nano TiO 2 , and finally combined it with different mass ratios of polylactic acid to form composite material samples. To verify the material performance, this article conducted experiments from two aspects: characterization of crystallization performance and analysis of degradability. The results showed that the higher the PLA mass ratio, the more ideal the degradability of the composite material. Compared to the material with a PLA mass ratio of 0%, the degradability of the material sample with a PLA mass ratio of 3% ultimately increased by 0.12%. The conclusion indicates that the polylactic acid nano TiO 2 composite material has excellent degradability, which helps to improve the environmental friendliness and application range of the material.

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Physico-chemical Characteristics of Biodegradable Poly(lactic acid) and Poly(lactic acid)/Chitosan Nano-Composites Under the Influence of Gamma Irradiation

et al. 2023

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PLA and its nanocomposite containing 3% chitosan nanoparticles (PLA-3CsNP) were studied to see how γ -irradiation affected their characteristics. Different doses of γ -irradiation were applied to the investigated materials under inquiry (5–40 kGy) using 60Co at ambient conditions. The irradiation materials were characterized by FT-IR, GPC, mechanical tensile test, DSC, XRD, and TGA in solid and chloroform solutions. The molecular weight of the studied materials was lowered when the irradiation dose was increased, indicating that γ-irradiation had the dominating effect through oxidative degradation, and chain scission. The addition of chitosan to PLA reduces the impact of γ-irradiation, while the samples irradiated in solution showed more degradation after irradiation than irradiated solid films. Irradiation caused a decrease in tensile strength and elongation at break values. Both the melting temperature (Tm) and the glass transition temperature (Tg) decreased as the irradiation dose was increased. The crystallization peak temperatures were reduced when pure PLA was irradiated in solution. The thermal stability of PLA was diminished as the irradiation dose was raised, and this effect was more pronounced in samples irradiated in chloroform solution.

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Nano-TiO2 Modified Wheat Straw/Polylactic Acid Composites Based on Synergistic Effect Between Interfacial Bridging and Heterogeneous Nucleation

Cited by 7 publications

References 38 publications

Preparation and Characterization for the Thermal Stability and Mechanical Property of PLA and PLA/CF Samples Built by FFF Approach

Preparation and Characterization for the Thermal Stability and Mechanical Property of PLA and PLA/CF Samples Built by FFF Approach

Study on Preparation, Properties, and Degradation Behavior of Nano-Tio2/PolyLactic Acid Composites

Physico-chemical Characteristics of Biodegradable Poly(lactic acid) and Poly(lactic acid)/Chitosan Nano-Composites Under the Influence of Gamma Irradiation

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