Preparation of aqueous anionic poly-(urethane-urea) dispersions: Influence of the nature and proportion of the urethane groups on the dispersion and polymer properties
✍ Scribed by Vanessa Durrieu; Alessandro Gandini; Mohamed Naceur Belgacem; Anne Blayo; Gilles Eiselé; Jean-Luc Putaux
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 253 KB
- Volume
- 94
- Category
- Article
- ISSN
- 0021-8995
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📜 SIMILAR VOLUMES
A two-step process for lactic acid polymerization is studied: in the first step the lactic acid is condensation-polymerized to a low-molecular-weight hydroxylterminated prepolymer; and then the molecular weight is raised by joining prepolymer chains together using diisocyanate as the chain extender.
## Abstract Experiments on the effect of temperature on the optical and electro‐optical behaviors of polymer‐dispersed liquid crystals (PDLCs) are considered. Composite films composed of poly(methyl methacrylate) (PMMA) and the nematic‐type liquid crystal (LC) E7 were prepared by solvent casting in