## Abstract In this study, hydrogels were prepared from blends of poly(vinyl alcohol) (PVA) and poly(vinyl pyrrolidone) (PVP). The miscibility of the polymers was confirmed with differential scanning calorimetry with the appearance of a single glassβtransition temperature. Additionally, a negative
Synthesis and characterization of soluble hybrids of poly(vinyl pyrrolidone) or its copolymer
β Scribed by K. S. Huang; E. C. Lee; Y. S. Chang
- Publisher
- John Wiley and Sons
- Year
- 2006
- Tongue
- English
- Weight
- 187 KB
- Volume
- 100
- Category
- Article
- ISSN
- 0021-8995
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ABA-type block copolymers containing segments of poly(dimethyl siloxane) and poly(vinyl pyrrolidinone) were synthesized. Dihydroxyl-terminated poly(dimethyl siloxane) was reacted with isophorone diisocyanate and then with t-butyl hydroperoxide to obtain macroinitiators having siloxane units. The per
Poly(viny1 acetate peroxide) (PVACP) was prepared from vinyl acetate by free-radicalinitiated oxidative polymerization. The polyperoxide was isolated and characterized by different spectroscopic methods. The extreme instability of PVACP was demonstrated by FTIR spectroscopy. The 'Hand I3C-NMR studie