Effect of Recycling on the Mechanical, Thermal and Rheological Properties of Polypropylene/Carbon Nanotube Composites
Abstract
:1. Introduction
2. Materials and Methods
3. Results
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Sample | Young Modulus (MPa) | Tensile Stress at Yield (Mpa) | Tensile Strain at Yield (%) | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Young Modulus (MPa) | Std. dev (MPa) | Relative std. dev (%) | Difference from the Unreinforced Original PP (%) | Tensile Stress at Yield (Mpa) | Std. dev (MPa) | Relative std. dev (%) | Difference from the Unreinforced Original PP (%) | Tensile Strain at Yield (%) | Std. dev (%) | Relative std. dev (%) | Difference from the Unreinforced Original PP (%) | |
PP | 999 | 3.9 | 0.39 | - | 22.12 | 0.23 | 1.03 | - | 5.33 | 0.09 | 1.75 | - |
PP REG | 958 | 9.1 | 0.95 | −4.1 | 21.44 | 0.15 | 0.71 | −3.1 | 5.47 | 0.09 | 1.70 | 2.6 |
PP 0.1/MWCNT | 1174 | 16.1 | 1.37 | 17.5 | 22.56 | 0.06 | 0.24 | 1.9 | 4.52 | 0.03 | 0.69 | −15.2 |
PP 0.1/MWCNT REG | 1041 | 61.6 | 5.92 | 4.2 | 22.50 | 0.19 | 0.83 | 1.7 | 5.20 | 0.36 | 6.92 | −2.5 |
PP 0.5/MWCNT | 1226 | 12.3 | 1.00 | 22.7 | 22.92 | 0.08 | 0.37 | 3.6 | 4.50 | 0.06 | 1.39 | −15.5 |
PP 0.5/MWCNT REG | 1156 | 67.1 | 5.81 | 15.7 | 22.44 | 0.23 | 1.03 | 1.4 | 4.75 | 0.37 | 7.73 | −10.9 |
Sample | Second Heating | Cooling | ||||
---|---|---|---|---|---|---|
∆Hm (J/g) | Tpm (°C) | Xc (%) | ∆Hc (J/g) | Tpc (°C) | Teic (°C) | |
PP | 99.40 | 162.2 | 47.3 | 90.0 | 120.1 | 115.7 |
PP REG | 100.80 | 162.4 | 48.2 | 89.2 | 121.6 | 118.7 |
PP 0.1/MWCNT | 110.70 | 163.7 | 52.9 | 102.4 | 126.6 | 123.6 |
PP 0.1/MWCNT REG | 99.50 | 163.2 | 47.6 | 91.4 | 125.6 | 122.7 |
PP 0.5/MWCNT | 107.70 | 163.8 | 51.5 | 98.2 | 127.9 | 125.2 |
PP 0.5/MWCNT REG | 101.40 | 164.0 | 48.5 | 92.7 | 128.0 | 125.3 |
Sample | 190 °C | 210 °C | 230 °C | |||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Zero-Shear-Rate Viscosity (Pa*s) | Std. dev (Pa*s) | Relative std. dev (%) | Difference from the Original Zero-Shear-Rate Viscosity (%) | Zero-Shear-Rate Viscosity (Pa*s) | Std. dev (Pa*s) | Relative std. dev (%) | Difference from the Original Zero-Shear-Rate Viscosity (%) | Zero-Shear-Rate Viscosity (Pa*s) | Std. dev (Pa*s) | Relative std. dev (%) | Difference from the Original Zero-Shear-Rate Viscosity (%) | |
PP | 5893 | 234.2 | 3.97 | - | 3300 | 83.8 | 2.54 | - | 1438 | 35.4 | 2.46 | - |
PP 0.1/MWCNT | 6128 | 172.9 | 2.82 | +3.98 | 3408 | 35.8 | 1.05 | +3.27 | 1573 | 45.6 | 2.90 | +9.38 |
PP 0.5/MWCNT | 8621 | 109.5 | 1.27 | +46.29 | 5676 | 193.9 | 3.42 | +72 | 3643 | 48.3 | 1.32 | +153.33 |
PP REG | 4803 | 4,6 | 0.10 | −18.5 | 2458 | 91.1 | 3.71 | −25.52 | 1024 | 59.5 | 5.81 | −28.79 |
PP 0.1/MWCNT REG | 5963 | 100.4 | 1.68 | +1.18 | 3063 | 84.5 | 2.76 | −7.19 | 1559 | 27.9 | 1.79 | +8.41 |
PP 0.5/MWCNT REG | 7306 | 15.0 | 0.21 | +23.97 | 4376 | 3408.0 | 0.62 | +32.6 | 2814 | 104.6 | 3.72 | +95.68 |
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Bata, A.; Nagy, D.; Weltsch, Z. Effect of Recycling on the Mechanical, Thermal and Rheological Properties of Polypropylene/Carbon Nanotube Composites. Polymers 2022, 14, 5257. https://doi.org/10.3390/polym14235257
Bata A, Nagy D, Weltsch Z. Effect of Recycling on the Mechanical, Thermal and Rheological Properties of Polypropylene/Carbon Nanotube Composites. Polymers. 2022; 14(23):5257. https://doi.org/10.3390/polym14235257
Chicago/Turabian StyleBata, Attila, Dorottya Nagy, and Zoltán Weltsch. 2022. "Effect of Recycling on the Mechanical, Thermal and Rheological Properties of Polypropylene/Carbon Nanotube Composites" Polymers 14, no. 23: 5257. https://doi.org/10.3390/polym14235257