A convenient route was established for synthesizing a polystyrene-b-poly(ethylene oxide) block copolymer. Polystyryl lithium, prepared by initiating the polymerization of styrene with sec-butyl lithium, was end-capped by reaction with ethylene oxide. After isolation and characterization, the product
Synthesis and physical behaviour of poly(amidoether) block copolymers
β Scribed by Francesco de Candia; Virginio Petrocelli; Roberto Russo; Giovanni Maglio; Rosario Palumbo
- Publisher
- Elsevier Science
- Year
- 1986
- Tongue
- English
- Weight
- 602 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0032-3861
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## Abstract **Summary:** The poly(amidoamine)s (PAAs) ISA 1 and ISA 23 display pHβdependent conformational change and pHβdependent membrane perturbation. These properties confer potential for use as endosomolytic polymers for intracytoplasmic delivery of toxins and genes. Both polymers are relative
Block copolymers of poly(methylphenylsilylene) and poly(methyl methacrylate) have been synthesized by condensation of a,u-dichloropoly-(methylphenylsilylene) with poly(methyl methacrylate)-lithium. The a,u-dichloropoly(methylphenylsilylene) was synthesized by the Wurtz-type reductive coupling of dic
## The preparation of multiblock copolymers poly[poly(~-lactide)-block-polydimethylsiloxane] by polycondensation of bifunctional oligomers via hydrosilylation is described. The procedure consists first to synthesize the two bifunctional oligomers a,wdisilyl-polydimethylsiloxane and a,wdiallyl-poly