Sol-gel reaction of tetraethoxysilane was carried out in molten polypropylene with the aid of an extruder. The resultant composites were used to mold sheets containing finely dispersed SiO 2 particles. These sheets were biaxially stretched to prepare microporous films, of which some properties were
Microporous Silica Films
β Scribed by Prof. Dr. Wilhelm F. Maier; Dipl.-Chem. Michael Wiedorn; Dipl.-Chem. Herbert O. Schramm
- Publisher
- John Wiley and Sons
- Year
- 1991
- Tongue
- English
- Weight
- 255 KB
- Volume
- 30
- Category
- Article
- ISSN
- 0044-8249
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Spherical microporous silica powders with a narrow size distribution have been prepared by a precipitation technique involving the hydrolysis reaction of a silicon alkoxide in ethanol. The formation of the important microporosity has been investigated following two templating methods: the co-hydroly
The structure and properties of a polypropylene microporous film prepared by biaxial stretching of non-porous polypropylene film of high p-cystal content were investigated. The porosity of these films can be as high as 3040%, and the average pore size was around 0.05 pm. The films were found to have