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CONCERTED H-BONDING TEMPLATE SYNTHESIS OF AN ORDERED LADDER POLYSILSESQUIOXANE.
- Source :
-
Chinese Journal of Polymer Science (World Scientific Publishing Company) . Sep2006, Vol. 24 Issue 5, p539-544. 6p. 1 Chart, 3 Graphs. - Publication Year :
- 2006
-
Abstract
- A novel soluble regular ladder poly(benzoyl-3-aminopropyl)silsesquioxane (LPBAS) was facilely prepared under effective assistance of concerted H-bonding self-assembly of amido groups of side chains and silanol groups, respectively, of a new template monomer [1,3-bis(benzoyl-3-aminopropyl)-1,1,3,3-tetraethoxydisiloxane] (M). The ordered ladder structure of LPBAS is manifested in: (1) the presence of two Bragg peaks representing the ladder width (d) and ladder thickness (t) in X-ray diffraction (XRD) pattern; (2) narrow base-line width (w = 6) of resonance absorption for -CH2SiO3/2 moiety in 29Si-NMR and (3) high glass transition temperature Tg= 112°C in differential scanning calorimetry (DSC) analysis. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02567679
- Volume :
- 24
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Chinese Journal of Polymer Science (World Scientific Publishing Company)
- Publication Type :
- Academic Journal
- Accession number :
- 22345560
- Full Text :
- https://doi.org/10.1142/S0256767906001618