Effect of annealing on poly(urethane-siloxane) copolymers
β Scribed by Jen-Taut Yeh; Yao-Chi Shu
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 42 KB
- Volume
- 104
- Category
- Article
- ISSN
- 0021-8995
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π SIMILAR VOLUMES
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
X-ray photoelectron spectroscopy is used to study the surface segregation of siloxane in dilute blends of poly(methy1 methacrylate)/poly(dimethyl siloxane) graft copolymers in poly(viny1 chloride) (PVC). The graft copolymers are found to be extremely efficient surface modifiers, which form, when add