1
|
Luo LB, Chen R, Lian YX, Wu WJ, Zhang JH, Fu CX, Sun XL, Xiao LR. Recycled PET/PA6 Fibers from Waste Textile with Improved Hydrophilicity by In-Situ Reaction-Induced Capacity Enhancement. Polymers (Basel) 2024; 16:1052. [PMID: 38674974 PMCID: PMC11054667 DOI: 10.3390/polym16081052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2024] [Revised: 03/25/2024] [Accepted: 04/02/2024] [Indexed: 04/28/2024] Open
Abstract
Due to the increasing amounts of textile waste, textile to textile recycling is of prime concern. Polyethylene terephthalate (PET) represents the most extensively used type of chemical fiber. Its spinnability suffers from impurities and degradation in the processing, which limits its recycling to new fibers. Here, recycled polyester is blended with a small amount of recycled nylon, and the regenerated fibers, which demonstrated good mechanical properties, were obtained via a melt spinning machine. The mechanical properties, thermal properties, rheological properties, and chemical structure of the modified recycled fibers were investigated. It was found that when compared with rPET-T fibers, the elongation at break of rPET-Ax fibers increased to 17.48%, and the strength at break decreased to 3.79 cN/dtex. The compatibility of PET and PA6 copolymer were enhanced by copolymers produced by in-situ reaction in the processing. Meanwhile, the existence of PA6 increases the crystallization temperature and improves the hydrophilicity of the fibers. This study realized the high-value recycling of waste PET fabric to new fibers, which opens a door for the large utilization of waste textiles.
Collapse
Affiliation(s)
- Li-Bin Luo
- Engineering Research Center of Polymer Green Recycling of Ministry of Education, Fujian Normal University, Fuzhou 350007, China; (L.-B.L.); (R.C.); (Y.-X.L.); (W.-J.W.)
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
| | - Rong Chen
- Engineering Research Center of Polymer Green Recycling of Ministry of Education, Fujian Normal University, Fuzhou 350007, China; (L.-B.L.); (R.C.); (Y.-X.L.); (W.-J.W.)
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
| | - Yu-Xin Lian
- Engineering Research Center of Polymer Green Recycling of Ministry of Education, Fujian Normal University, Fuzhou 350007, China; (L.-B.L.); (R.C.); (Y.-X.L.); (W.-J.W.)
- College of Environmental and Resource Science, College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou 350007, China
| | - Wen-Jun Wu
- Engineering Research Center of Polymer Green Recycling of Ministry of Education, Fujian Normal University, Fuzhou 350007, China; (L.-B.L.); (R.C.); (Y.-X.L.); (W.-J.W.)
- College of Environmental and Resource Science, College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou 350007, China
| | - Jia-Hong Zhang
- Fujian Baichuan Resource Recovery Technology Co., Ltd., Quanzhou 362100, China;
| | - Chong-Xian Fu
- Fujian Eversun Jinjiang Co., Ltd., Fuzhou 350200, China;
| | - Xiao-Li Sun
- Engineering Research Center of Polymer Green Recycling of Ministry of Education, Fujian Normal University, Fuzhou 350007, China; (L.-B.L.); (R.C.); (Y.-X.L.); (W.-J.W.)
- College of Environmental and Resource Science, College of Carbon Neutral Modern Industry, Fujian Normal University, Fuzhou 350007, China
| | - Li-Ren Xiao
- Engineering Research Center of Polymer Green Recycling of Ministry of Education, Fujian Normal University, Fuzhou 350007, China; (L.-B.L.); (R.C.); (Y.-X.L.); (W.-J.W.)
- College of Chemistry and Materials Science, Fujian Normal University, Fuzhou 350007, China
| |
Collapse
|
2
|
Chukov DI, Tcherdyntsev VV, Stepashkin AA, Zadorozhnyy MY. Structure, Thermal, and Mechanical Behavior of the Polysulfone Solution Impregnated Unidirectional Carbon Fiber Yarns. Polymers (Basel) 2023; 15:4601. [PMID: 38231992 PMCID: PMC10708668 DOI: 10.3390/polym15234601] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2023] [Revised: 11/24/2023] [Accepted: 11/30/2023] [Indexed: 01/19/2024] Open
Abstract
The paper is devoted to the study of thermal and mechanical behavior and structural features of the polysulfone solution impregnated unidirectional carbon fiber yarns depending on fabrication conditions and appearance for optimum production method of the composites. The effect of producing conditions, such as polysulfone solution concentration, drying and post-heating temperatures, and the residual solvent content on the structure, mechanical, and thermal properties of the carbon fiber-reinforced composites was studied. The polysulfone solution impregnated carbon fiber yarns show relatively high mechanical properties, realizing up to 80% of the carbon fibers' tensile strength, which can be attributed to good wettability and uniform polymer matrix distribution throughout the entire volume of the composites. It was found that the composites impregnated with 40 wt.% of the polysulfone solution showed lower porosity and higher mechanical properties. The results of a dynamic mechanical analysis indicate that residual solvent has a significant effect on the composites' thermal behavior. The composites heated to 350 °C for a 30 min showed higher thermal stability compared to ones dried at 110 °C due to removal of residual solvent during heating. The impregnated carbon fiber yarns can be used for the further producing bulk unidirectional composites by compression molding and the proposed method can be easily transformed to continuous filament production, for example for further use in 3-D printing technology.
Collapse
Affiliation(s)
| | - Victor V. Tcherdyntsev
- Laboratory of Functional Polymer Materials, National University of Science and Technology “MISIS”, Leninskii Prosp. 4, 119049 Moscow, Russia; (D.I.C.); (A.A.S.); (M.Y.Z.)
| | | | | |
Collapse
|