scholarly journals Thermal, Mechanical and UV-Shielding Properties of Poly(Methyl Methacrylate)/Cerium Dioxide Hybrid Systems Obtained by Melt Compounding

Polymers ◽  
2015 ◽  
Vol 7 (9) ◽  
pp. 1638-1659 ◽  
Author(s):  
María Reyes-Acosta ◽  
Aidé Torres-Huerta ◽  
Miguel Domínguez-Crespo ◽  
Abelardo Flores-Vela ◽  
Héctor Dorantes-Rosales ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Hybrid Systems ◽  
Cerium Dioxide ◽  
Poly Methyl Methacrylate ◽  
Uv Shielding ◽  
Melt Compounding ◽  
Shielding Properties

Transparent poly(methyl methacrylate)/TiO2 nanocomposites for UV-shielding applications

2011 ◽  
Vol 53 (10) ◽  
pp. 977-983 ◽  
Author(s):  
Xiangfu Meng ◽  
Zhiwei Zhang ◽  
Nan Luo ◽  
Shengli Cao ◽  
Mingshu Yang
Keyword(s):  
Methyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
Uv Shielding

Transparent Poly(methyl methacrylate)/TiO2 Nanocomposites for UV-Shielding Applications

2011 ◽  
Vol 239-242 ◽  
pp. 1129-1136 ◽  
Author(s):  
Xiang Fu Meng ◽  
Zhi Wei Zhang ◽  
Nan Luo
Keyword(s):  
Methyl Methacrylate ◽  
Sol Gel ◽  
Titania Nanoparticles ◽  
Tetrabutyl Titanate ◽  
Poly Methyl Methacrylate ◽  
Uv Shielding ◽  
Transmission Electron ◽  
Ir Transmission ◽  
Ft Ir ◽  
Hydrolysis Of

Transparent poly(methyl methacrylate) (PMMA)/TiO2 nanocomposites have been prepared by solution mixing PMMA with organically soluble titania xerogel. The organically soluble titania xerogel in the form of amorphous phase has been synthesized via a simple sol-gel method, involving hydrolysis of tetrabutyl titanate (TBT) in trifluoroacetic acid (TFA) and gelation. The obtained PMMA/TiO2 nanocomposites were characterized by Fourier transform infrared spectroscopy (FT-IR), transmission electron microscope (TEM), thermogravimetry (TG) and ultraviolet-visible (UV-vis) absorption spectroscopy. The results showed that the interaction between titania nanoparticles and PMMA macromolecular chains led to a homogeneous dispersion of TiO2 in PMMA matrix. The resulting PMMA/TiO2 nanocomposites showed improved thermal stability, high transparency and high UV-shielding efficiency with a small amount of titania xerogel (£3.0 wt%). The present work is of interest for developing a series of transparent UV-shielding nanocomposites.

Transparency, ultraviolet transmittance, and miscibility of poly(lactic acid)/poly(methyl methacrylate) blends

2017 ◽  
Vol 50 (7) ◽  
pp. 596-610 ◽  
Author(s):  
EL Teoh ◽  
WS Chow
Keyword(s):  
Lactic Acid ◽  
Methyl Methacrylate ◽  
Poly Lactic Acid ◽  
Dynamic Mechanical Analyzer ◽  
Poly Methyl Methacrylate ◽  
Melt Compounding ◽  
Solvent Uptake ◽  
Uptake Experiment ◽  
Pmma Blends ◽  
Interaction Parameter Χ

Poly(lactic acid)/poly(methyl methacrylate) (PLA/PMMA) blends were prepared by melt compounding technique. The miscibility of PLA/PMMA blends at various blending ratios (i.e. 80/20, 60/40, 40/60, and 20/80) was investigated using a dynamic mechanical analyzer (DMA) and solvent uptake experiment. The solvent uptake experiment was conducted to estimate the interaction of PLA/PMMA blends based on the calculation of Flory–Huggins interaction parameter ( χ12). DMA results revealed that only single glass transition temperature ( Tg) existed along the PLA/PMMA blends. Smallest χ12 (i.e. −0.03) was found on the PLA/PMMA20 blend, suggesting interaction between PLA and PMMA at this composition. The incorporation of PMMA slightly improved the UV protection properties of the PLA/PMMA blend, while maintaining their optical transparency.

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