Non‐isothermal crystallization kinetics and morphology of mica particles filled biodegradable poly(butylene succinate)

Zhang, Ning; Qu, Jinping; Tan, Bin; Lu, Xiang; Huang, Jintao; Zhang, Guizhen; Zhang, Yongqing; Jin, Gang

doi:10.1002/app.39469

Cited by 9 publications

(6 citation statements)

References 56 publications

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“…This leads to an overall increase in the crystallization rate. The t 1/2 values for mica/PBSu composites were less than those for neat PBSu at a fixed cooling rate, according to Zhang et al [ 35 ], indicating that the presence of mica particles speeds up the non-isothermal crystallization process. Yacini et al [ 36 ] found a similar decreasing phenomenon during the non-isothermal process of the PBSu/multi-walled carbon nanotube composites.…”

Section: Resultsmentioning

confidence: 86%

Non-Isothermal Crystallization Kinetics of PBSu/Biochar Composites Studied by Isoconversional and Model Fitting Methods

et al. 2023

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Non-isothermal crystallization of Poly(butylene succinate) (PBSu)/biochar composites was studied at various constant cooling rates using differential scanning calorimetry. The analysis of the kinetics data revealed that the overall crystallization rate and activation energy of the PBSu polymer were significantly influenced by the addition of biochar. Specifically, the PBSu/5% biochar composite with a higher filler content was more effective as a nucleation agent in the polymer matrix, as indicated by the nucleation activity (ψ) value of 0.45. The activation energy of the PBSu/5% biochar composite was found to be higher than that of the other compositions, while the nucleation activity of the PBSu/biochar composites decreased as the biochar content increased. The Avrami equation, which is commonly used to describe the kinetics of crystallization, was found to be limited in accurately predicting the non-isothermal crystallization behavior of PBSu and PBSu/biochar composites. Although the Nakamura/Hoffman–Lauritzen model performed well overall, it may not have accurately predicted the crystallization rate at the end of the process due to the possibility of secondary crystallization. Finally, the combination of the Šesták–Berggren model with the Hoffman–Lauritzen theory was found to accurately predict the crystallization behavior of the PBSu/biochar composites, indicating a complex crystallization mechanism involving both nucleation and growth. The Kg parameter of neat PBSu was found to be 0.7099 K2, while the melting temperature and glass transition temperature of neat PBSu were found to be 114.91 °C and 35 °C, respectively, very close to the measured values. The Avrami nucleation dimension n was found to 2.65 for PBSu/5% biochar composite indicating that the crystallization process is complex in the composites.

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Section: Resultsmentioning

confidence: 86%

Non-Isothermal Crystallization Kinetics of PBSu/Biochar Composites Studied by Isoconversional and Model Fitting Methods

et al. 2023

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“…Commonly, an increasing content of a plasticizer leads to a decrease in the viscosity of the rubber mixture, and therefore, its processability will be improved [9]. In the rubber industry, paraffinic and aromatic oils have been very important additives that can reduce viscosity, increase the processability, enhance the elastomeric performance, result in better filler dispersion, lower the glass temperature transition, and result in low hardness and temperature resistance [10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Rheological properties and curing features of polymer materials filled with biowaste

Božeková

Mičicová

Ondrušová

et al. 2023

Materialwissenschaft Werkst

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Besides mechanical properties, the dynamic mechanical properties in a sensible range of temperature and rheological properties have to be taken into account for engineering applications. The rising concern towards the reduction in the use of petroleum-based non-renewable resources has led to increasing interests in natural polymer composites filled with natural organic fillers, i. e. they are from renewable and biodegradable sources. This work is focused on the use of biowaste, specifically wood flour as a plasticizer replacement in a rubber compound. Plasticizers (also called softener, extender or process oils) are common additives for polymers with a low molecular weight.An increasing content of a plasticizer usually leads to a decrease in the viscosity of the rubber mixture, and therefore, its processability can be improved.Based on the given fact, the experiment is aimed at the studies of the rheological properties. The scanning electron microscopy results can confirm the compatibility or incompatibility of the biowaste, specifically wood flour with rubber matrix. In the case of a successful replacement for plasticizer with wood flour, we expect a significant reduction in the cost of the mixtures production as well as a reduction in the environmental impact, compared with the petroleum products.

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“…12, 13 Unfortunately, it still lacks the mechanical and thermal properties needed for industrial application. 14-19 It is necessary to modify PBS to improve the properties for diverse applications. 2, 20, 21…”

Section: Introductionmentioning

confidence: 99%

Reactive extrusion of partially crosslinked poly (butylene succinate) via novel vane extruder: thermal, mechanical and rheological properties

Huang

2016

Plastics, Rubber and Composites

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In this study, crosslinked poly (butylene succinate) (PBS) was prepared successfully by the reactions of the end hydroxyl groups of PBS with the isocyanate groups of hexamethylene diisocyanate prepolymer (HDIP) using a vane extruder (VE) followed by compression moulding. Torque and gel permeation chromatography showed that the PBS was successfully corsslinked by HDIP. The effects of varied HDIP on properties such as mechanical, thermal properties, and capillary rheological behaviours were also evaluated. The results indicated that HDIP crosslinked PBS with high efficiency. The gel fraction of the crosslinked PBS increased to 57% with the 1.5 wt-% HDIP loading. Differential scanning calorimetry revealed that the cross-link points in the crosslinked samples act as crystal nuclei and the crystallisation temperature increase. Dynamic mechanical analysis revealed that the glass transition temperature (Tg) increased with increase in gel fraction. This may be caused by the reduced molecular chain mobility for corsslinked samples. The capillary rheological properties showed that all samples exhibit non-Newtonian and shear thinning characteristics in the range of applied shear rates, and the apparent viscosity increased with the HDIP content. What's more, the crosslinked PBS also showed improved mechanical properties and thermal stability.

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Non‐isothermal crystallization kinetics and morphology of mica particles filled biodegradable poly(butylene succinate)

Cited by 9 publications

References 56 publications

Non-Isothermal Crystallization Kinetics of PBSu/Biochar Composites Studied by Isoconversional and Model Fitting Methods

Non-Isothermal Crystallization Kinetics of PBSu/Biochar Composites Studied by Isoconversional and Model Fitting Methods

Rheological properties and curing features of polymer materials filled with biowaste

Reactive extrusion of partially crosslinked poly (butylene succinate) via novel vane extruder: thermal, mechanical and rheological properties

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