Gel permeation chromatography (GPC) and viscometry (V) methods have been combined for determination of long-chainbranching in bisphenol-A polycarbonate (PC) by means of a branching factor gv = M\*~/M\*, where M\*g and M\* are the apparent viscosity-average molecular weights calculated from GPC data
Solvent-vapor-induced crystallization of branched polydisperse polycarbonate
✍ Scribed by I. Daniewska; Z. Dobkowski; Z. Członkowska-Kohutnicka
- Publisher
- John Wiley and Sons
- Year
- 1986
- Tongue
- English
- Weight
- 227 KB
- Volume
- 31
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
Preliminary results on the investigation of solvent-vapor-induced crystallization of polycarbonate /PC/ are presented. The influence of solvent solubility parameters 6. on the sphrulite radius R and crystallinity degree a is taken into account. It has been found that both R and a depend on 6. for PC samples of different molecular characteristics.
📜 SIMILAR VOLUMES
The sample dimensional changes accompanying diffusion with induced crystallization in amorphous poly(ethy1ene terephthalate) (PET) films are analyzed. Initially, the film's lateral area remains practically constant, but near the end of the process, it increases rapidly, consistent with non-Fickian m