Wind-sieving machine

Template monomer 7 (0.75 g), AIBN initiator (120 mg), crosslinker ethylene dimethacrylate (15.0 g) in tetrahydrofuran (15.0 g) were filled into a tube, carefully degassed by three freeze-thaw cycles, sealed under argon, and polymerized for four days at 65 °C. The tube was then cooled and broken, and the polymer was milled with an Alpine Con-traplex 63 C, and sieved to a grain size of 125-163 pm. Alternatively, the polymer could be milled to a finer powder and separated to a particle diameter fraction of 8 -15 pm by a wind-sieving machine (Alpine Multiplex 100 MRZ). This material was first extracted with dry diethyl ether before being dried in vacuum at 40 °C. The template was removed from the polymer by a continuous extraction with methanol-water (250 mL per g of polymer). After the solvent was evaporated, the residue was dissolved in a defined volume of methanol and the content of 7a was determined polarimetrically. 

For chromatographic purposes the polymers were first milled, then sieved in a wind-sieving machine (Alpine Multiplex 1(X) MZR). Separation factor a for the separation of D,L-phenylalanine anilide was 3.5. The chromatographic separation showed a resolution... 

Fibers coated with the matrix solution were carried out simultaneously along with fiber winding. The matrix solution is composed of sieved salt particles dispersed in a Hydrothane(D/DMAC (Dimethylacetamide) solution. After winding, the impregnate fibers were removed from the machine and inserted in a glass cylinder containing ethyl alcohol to remove the DM AC. Once the DMAC was removed the composite structure is immersed in water to leach out the salt. 

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