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| Content Provider | Springer Nature Link |
|---|---|
| Author | Pal, Maj Kumar Singh, Beena Gautam, Jaiswar |
| Copyright Year | 2011 |
| Abstract | The influences of nanosized CaCO$_{3}$ on the thermal and optical properties embedded in poly(methyl methacrylate) (PMMA) and polystyrene (PS) were investigated. Calcium carbonate nanoparticles were synthesized by in situ deposition technique, and its nano size (32–35 nm) was confirmed by scanning electron microscope (SEM) and X-ray studies. Nanocomposites samples of PMMA/CaCO$_{3}$ and PS/CaCO$_{3}$ were prepared with different filler loading (0–4 wt%) of CaCO$_{3}$ nanoparticles by solution mixing technique. The Fourier transform infrared analysis confirmed that CaCO$_{3}$ nanoparticles were present in the polymers matrices. The morphology and elemental composition of nanocomposites were evaluated by SEM and energy dispersive X-ray spectroscopy. The thermal properties of nanocomposites were characterized by differential scanning calorimetric, thermogravimetric, and differential thermogravimetry analysis, and the results indicate that the incorporation of CaCO$_{3}$ nanoparticles could significantly improve the thermal properties of PMMA/CaCO$_{3}$ and PS/CaCO$_{3}$ nanocomposites. The glass transition temperature (T $_{ g }$) and decomposition temperature (T $_{ d }$) of nanocomposites with 4 wt% of CaCO$_{3}$ nanoparticles were increased by 30 and 24 K in case of PMMA/CaCO$_{3}$ and 32 and 15 K in the case of PS/CaCO$_{3}$ nanocomposites, respectively. The obtained transparent nanocomposites films were characterized using UV–Vis spectrophotometer which shows the transparencies of nanocomposites are almost maintained in visible region while the intensity of absorption band in ultraviolet (UV) region is increased with CaCO$_{3}$ nanoparticles contents and these composites particles could enhance the UV-shielding properties of polymers. |
| Starting Page | 85 |
| Ending Page | 96 |
| Page Count | 12 |
| File Format | |
| ISSN | 13886150 |
| Journal | Journal of thermal analysis |
| Volume Number | 107 |
| Issue Number | 1 |
| e-ISSN | 15728943 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2011-06-16 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | CaCO$_{3}$ nanoparticles PMMA PS SEM–EDS TG/DTG UV–Vis shielding Physical Chemistry Polymer Sciences Measurement Science and Instrumentation Inorganic Chemistry Analytical Chemistry |
| Content Type | Text |
| Resource Type | Article |
| Subject | Physical and Theoretical Chemistry Condensed Matter Physics |
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