Hydrophilic Modification of a Polyurethane Surface Using Grafted 2,4,6-Tris(dimethylaminomethyl) Phenol
Autor: | Ji Eun Park, Byoung Chul Chun, Ji Young Kim, Yong-Chan Chung |
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Rok vydání: | 2021 |
Předmět: |
Materials science
Polymers and Plastics General Chemical Engineering Ionic bonding 02 engineering and technology General Chemistry 010402 general chemistry 021001 nanoscience & nanotechnology Grafting 01 natural sciences 0104 chemical sciences law.invention Contact angle chemistry.chemical_compound chemistry Chemical engineering law medicine Phenol Fiber Swelling medicine.symptom Crystallization 0210 nano-technology Polyurethane |
Zdroj: | Fibers and Polymers. 22:904-915 |
ISSN: | 1875-0052 1229-9197 |
Popis: | 2,4,6-Tris(dimethylaminomethyl) phenol (TDMP) was used as a grafted functional group to modify the hydrophilicity of polyurethane (PU) and to enhance the mechanical properties and low-temperature flexibility of PU. The grafted TDMP after conversion to the ionic form notably enhanced the hydrophilicity of PU, as confirmed by the water contact angle, water swelling, and water vapor permeability results. The light crosslinking that occurred during the grafting step increased the crosslink density and solution viscosity but did not disturb the solvation of PU. The melting of the soft segment was not affected by the grafted TDMP, but the crystallization of the soft segment was significantly reduced. The breaking tensile stress and shape recovery capability were notably enhanced, but the breaking tensile strain and shape retention capability were not impaired. In addition, the grafted TDMP notably improved the flexibility of PU at very low temperature compared with that of plain PU and control series PU. Overall, it is worth grafting TDMP onto PU considering the simple preparation method, the novelty of the modification mechanism, the notable enhancement in hydrophilicity, and the potential applications in fiber and biomedical fields. |
Databáze: | OpenAIRE |
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