scholarly journals Optical Study on Poly(methyl methacrylate)/Poly(vinyl acetate) Blends

2009 ◽  
Vol 2009 ◽  
pp. 1-7 ◽  
Author(s):  
R. M. Ahmed
Keyword(s):  
Methyl Methacrylate ◽  
Vinyl Acetate ◽  
Specular Reflection ◽  
Optical Parameters ◽  
Poly Methyl Methacrylate ◽  
Transparent Films ◽  
Before And After ◽  
Ir Transmission ◽  
Solution Cast ◽  
Ft Ir

Transparent films of poly(methyl methacrylate)/poly(vinyl acetate) blend with different concentrations were prepared by using solution-cast technique. FT-IR transmission spectra were carried for the samples to detect the influence of UV radiation. In addition, optical absorption measurements were carried out for the samples at room temperature across the 190–900 nm wavelength regions before and after exposure to UV and filtered radiation using xenon arc lamp. The study has been also extended to include the changes in the optical parameters including the band tail width and band gap energies for the samples. Moreover, the refractive index was calculated for the samples from specular reflection and absorption spectrum before and after exposure to UV and filtered radiation.

Surface enrichment of the solution-cast poly(methyl methacrylate)/poly(vinyl acetate) blends

Polymer ◽  
1995 ◽  
Vol 36 (6) ◽  
pp. 1229-1234 ◽  
Author(s):  
Won-Ki Lee ◽  
Won-Jei Cho ◽  
Chang-Sik Ha ◽  
Atsushi Takahara ◽  
Tisato Kajiyama
Keyword(s):  
Methyl Methacrylate ◽  
Vinyl Acetate ◽  
Surface Enrichment ◽  
Poly Methyl Methacrylate ◽  
Solution Cast

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.

scholarly journals Dynamics ofαandβprocesses in thin polymer films: Poly(vinyl acetate) and poly(methyl methacrylate)

2001 ◽  
Vol 64 (5) ◽  
Author(s):  
Koji Fukao ◽  
Shinobu Uno ◽  
Yoshihisa Miyamoto ◽  
Akitaka Hoshino ◽  
Hideki Miyaji
Keyword(s):  
Methyl Methacrylate ◽  
Vinyl Acetate ◽  
Polymer Films ◽  
Thin Polymer Films ◽  
Poly Methyl Methacrylate ◽  
Thin Polymer

Hybridization of CMRP and ATRP: A Direct Living Chain Extension from Poly(vinyl acetate) to Poly(methyl methacrylate) and Polystyrene

2015 ◽  
Vol 48 (19) ◽  
pp. 6832-6838 ◽  
Author(s):  
Ya-Jo Chen ◽  
Bing-Jyun Wu ◽  
Fu-Sheng Wang ◽  
Mu-Huan Chi ◽  
Jiun-Tai Chen ◽  
...  
Keyword(s):  
Methyl Methacrylate ◽  
Vinyl Acetate ◽  
Chain Extension ◽  
Poly Methyl Methacrylate

Preparation and Thermal Performance of Poly(Methyl Methacrylate)/Binary Alkane-Alcohol Organic Eutectic Microcapsules as Phase Change Materials for Cold Storage

2016 ◽  
Vol 852 ◽  
pp. 614-617
Author(s):  
Ni Gao ◽  
Li Xian Sun ◽  
Fen Xu ◽  
Huan Zhi Zhang ◽  
Zhong Cao
Keyword(s):  
Methyl Methacrylate ◽  
Phase Change ◽  
Phase Change Materials ◽  
Spherical Shape ◽  
Polymerization Reaction ◽  
Poly Methyl Methacrylate ◽  
Organic Eutectic ◽  
Heat Value ◽  
Ft Ir ◽  
Thermal Stability Of

In this study, the microcapsules containing binary alkane-alcohol organic eutectic of mixed n-tetradecane and 1-dodecanol (TD-DD) phase change materials as the core and poly (methyl methacrylate)(PMMA) as the shell were prepared by emulsion polymerization reaction. The microcapsules were characterized by using DSC, SEM, FT-IR and TG. The results of DSC test showed that melting and freezing temperatures of the microcapsules are-6.136 °C and 5.203 °C, and total latent heat value are-82.522 J/g and 77.632 J/g, respectively. The SEM and FT-IR analyses indicated that PMMA shell has successfully encapsulated TD-DD. The TD-DD and the microcapsules exhibited in spherical shape. Additionally, the TG test showed that the thermal stability of TD-DD was increased after encapsulation.

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