Effect of Potassium Permanganate Modification on Plasticized Spinning Polyacrylonitrile Fibers with Different Diameters
Abstract
:1. Introduction
2.Material and Methods
2.1. Materials
2.2. Preparation of Samples
2.3. Characterization
3. Results
4. Conclusions
Author Contributions
Funding
Acknowledgments
Conflicts of Interest
References
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Fiber Type | Fiber Fineness/dtex | Fiber Diameter/μm | Elongation at Break/% | Breaking Strength/(cN/dtex) | Initial Modulus/(cN/dtex) |
---|---|---|---|---|---|
Large diameter | 2.33 | 16.6 | 9.26 | 5.95 | 100.92 |
Small diameter | 1.16 | 10.2 | 7.58 | 5 | 83.56 |
Diameter/μm | Temperature/°C | Abbreviation | Ti/°C | Tf/°C | ΔT | T/°C | ΔH/J g−1 |
---|---|---|---|---|---|---|---|
16.6 | - | A | 229.5 | 353.2 | 123.72 | 268.52 | 403 |
70 | A1 | 229.8 | 364.17 | 139.39 | 270.43 | 335.2 | |
75 | A2 | 226.1 | 371.79 | 145.67 | 267.39 | 454.5 | |
80 | A3 | 224 | 382.81 | 158.82 | 261.69 | 480.5 | |
10.2 | - | B | 229.8 | 346.8 | 117 | 268.23 | 451.2 |
70 | B1 | 213.6 | 325.84 | 112.23 | 272.39 | 411.8 | |
75 | B2 | 207.5 | 313.82 | 106.31 | 261.52 | 404.4 | |
80 | B3 | 199 | 312.37 | 113.37 | 260 | 400.6 |
Heating Rate/(°C/min) | 16.6 μm | 10.2 μm | ||
---|---|---|---|---|
A | A3 | B | B3 | |
10 | 268.5 | 261.7 | 268.2 | 260 |
15 | 281.7 | 270.4 | 274.6 | 267.7 |
20 | 293.8 | 278.4 | 281.4 | 276.4 |
25 | 300.8 | 285.3 | 286.8 | 282.4 |
30 | 306.3 | 287.8 | 294.6 | 287 |
Fiber Type | Crystallinity/% | Crystal Size/nm | Orientation Degree/% |
---|---|---|---|
A | 67.4 | 4.71 | 85.3 |
A1 | 67.1 | 4.68 | 85.5 |
A2 | 63.04 | 4.45 | 79.6 |
A3 | 59.67 | 4.25 | 75.4 |
B | 66.6 | 4.63 | 83.4 |
B1 | 62.15 | 4.14 | 74.5 |
B2 | 56.52 | 3.98 | 67.1 |
B3 | 53.12 | 3.46 | 62.7 |
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Li, X.; Dang, X. Effect of Potassium Permanganate Modification on Plasticized Spinning Polyacrylonitrile Fibers with Different Diameters. Polymers 2018, 10, 1330. https://doi.org/10.3390/polym10121330
Li X, Dang X. Effect of Potassium Permanganate Modification on Plasticized Spinning Polyacrylonitrile Fibers with Different Diameters. Polymers. 2018; 10(12):1330. https://doi.org/10.3390/polym10121330
Chicago/Turabian StyleLi, Xiang, and Xiaonan Dang. 2018. "Effect of Potassium Permanganate Modification on Plasticized Spinning Polyacrylonitrile Fibers with Different Diameters" Polymers 10, no. 12: 1330. https://doi.org/10.3390/polym10121330