Journal
MACROMOLECULAR MATERIALS AND ENGINEERING
Volume 300, Issue 1, Pages 64-69Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/mame.201400166
Keywords
hyperbranched polyesters; mechanical properties; TiO2 coatings; UV-blocking layers; Vectran fibers
Funding
- National Science Foundation of China [51273050]
- Program for Harbin city science and technology innovation talents of special fund project [2012RFXXG091]
- National Science Foundation-Nanomanufacturing, USA [CMMI-13-14486]
- National Science Foundation-Nanoscale Interdisciplinary Research Team and Materials Processing and Manufacturing, USA [CMMI 10-30755]
- Directorate For Engineering [1030755, 1314486] Funding Source: National Science Foundation
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An OH terminated hyperbranched polyester is used to stabilize TiO2 nanomaterials (10nm) in situ synthesized via a sol-gel method with butyltitanate as precursor. X-ray diffraction (XRD) analyses and thermogravimetric (TGA) analyses illustrate the interactions of the hyperbranched polyester with the TiO2 nanoparticles. The stabilized TiO2 nanocomposites are used in the finishing process of Vectran and a continuous uniform TiO2 coating on the Vectran fiber surface is achieved. The TiO2-treated Vectran filaments exhibit an increased tensile strength compared to the untreated Vectran systems upon exposure to Xenon lamp UV radiation. The coating leads to improved UV-blocking performance.
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