A series of polymer blends of commercial poly(viny1 chloride) (suspension-polymerized powder) and an ethylene-vinyl acetate copolymer (EVA with 45 w t % VA) containing 2-10 wt % EVA were prepared by mixing at room temperature (0) and by milling at 160ยฐC for 15 min (I) and then heat treated at 170ยฐC
An NMR investigation of phase relations in PVC (Poly Vinyl Chloride)-EVA (Ethylene-Vinyl Acetate Copolymer) blends with impact strength
โ Scribed by C. Elmgvist; S. E. Svanson
- Publisher
- Springer
- Year
- 1975
- Weight
- 156 KB
- Volume
- 253
- Category
- Article
- ISSN
- 0340-255X
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๐ SIMILAR VOLUMES
A series of technical composite suspension polymerized poly vinyl chloride products with additions of ethylene-vinyl acetate copolymer (Levapren 450M, 45 wt % VAcl have been investigated with NMR. Partial compatibility is found in these samples, and the phase conditions have been shown to be very mu
Further investigations of the system PVC-EVA, with wide line NMR, have shown that the phase relations differ for graft-polymerized samples and non-grafted samples prepared by milling the polymer components together. The phase relations of the grafted products are not appreciably changed by different