Morphological study of PVDF/PMMA/TiO2 blend films prepared by melt casting process
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Tomonori Hosoda
und
Toshiro Yamada
Abstract
The influence of chill roll temperature and thermal annealing on the morphology and dynamic mechanical behavior of poly(vinylidene fluoride) (PVDF)/poly(methyl methacrylate) (PMMA)/titanium dioxide blend films prepared by a melt casting process was studied. The β phase of PVDF was formed at the chill roll temperature of 30°C. Furthermore, with the increase in this chill roll temperature, its structural conversion to the α phase was observed. No change in the crystal structure of either the β or α phase occurred on account of thermal annealing at 115°C for 24 h. The decrement in the storage modulus above the glass transition temperature ascribed to the mixed amorphous phase became smaller, as the chill roll temperature increased. Based on morphological observations, we deduced that the reason for this decrement is not that the film cast at 115°C was more crystalline than that cast at 30°C but that the actual weight fraction of PMMA in the mixed amorphous phase of the film cast at 115°C was lower than that of the one cast at 30°C.
The authors acknowledge the helpful discussion and cooperation in performing these experiments with Kureha Extech Co., Ltd., Tetsuya Komatsuzaki (Kureha Extech), Tomoyuki Hidaka (Kureha Corporation), Kazuyuki Suzuki (Kureha Corporation), and Yusuke Sato (Kureha Corporation) during 2010–2012.
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Artikel in diesem Heft
- Masthead
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- Original articles
- Degradation of epoxidized natural rubber compatibilized linear low density polyethylene/ soya powder blends: the effect of natural weathering
- Effect of compatibilizing agents on the physical properties of iPP/HDPE organoclay blends
- Thermal and mechanical properties of ultrahigh molecular weight polyethylene/high-density polyethylene/polyethylene glycol blends
- Effect of MMT concentrations as reinforcement on the properties of recycled PET/HDPE nanocomposites
- Three-dimensional viscoelastic simulation of the effect of wall slip on encapsulation in the coextrusion process
- Studies on thin films of PVC-PMMA blend polymer electrolytes
- Morphological study of PVDF/PMMA/TiO2 blend films prepared by melt casting process
- Effects of calcium stearate and metal hydroxide additions on the irradiated LDPE/EVA compound properties
- Preparation of poly(sebacic anhydride) and polylactic acid pills used as drug carrier for levofloxacin controlled release
- Gray optimization of process parameters of surface modification of coconut sheath reinforced polymer composites
