Synthesis of monodisperse hydroxyl-containing polystyrene via chemical modification
โ Scribed by Lei Zhu; Lu Liu; Ming Jiang
- Publisher
- John Wiley and Sons
- Year
- 1996
- Tongue
- English
- Weight
- 310 KB
- Volume
- 17
- Category
- Article
- ISSN
- 1022-1336
No coin nor oath required. For personal study only.
โฆ Synopsis
A facile synthesis of linear monodisperse hydroxyl-containing polystyrene, poly (styreneco-[p-(I-hydroxyethyl)styrene]) and poly(styrene-co-[p-(2-hydroxypropan-2-yl)styrene]),
was carried out via chemical modification of polystyrene by a two-step procedure, i.e. monodisperse polystyrene was acetylated under mild conditions, followed by processes of reduction with LiAIH, and addition with CH,MgBr, respectively. ' H N M R and FTIR spectra showed that in both cases, the reaction of acetyl to hydroxyl is complete. Sizeexclusion chromatography demonstrated that both molecular weight and monodispersity of the final products were basically unchanged.
๐ SIMILAR VOLUMES
A new series of epoxy resins containing 4-(N,N-dialkylamine)pyridines (DAAP) functionality was prepared by reaction of 4-aminopyridine or/and aniline with epichlorohydrin. Then, hydroxyl groups in the polymeric chain underwent a chemical modification with acyl chloride. Modification of the side grou
Several monosaccharides and organic residues, including alkyl, spin-label and organometallic groups, have been linked in various combinations through nitrogen, oxygen, or sulfur atoms by treatment with 2,4,6-trichloro-1,3,5triazine. \*For a preliminary communication, see ref. 1.