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Encyclopedia of polymer science and engineering
- Publisher
- Springer Journals
- Copyright
- 2009 The Polymer Society of Korea and Springer
- ISSN
- 1598-5032
- eISSN
- 2092-7673
- DOI
- 10.1007/BF03218651
- Publisher site
- See Article on Publisher Site
Abstract
Abstract We successfully prepared high-flow polycarbonate (PC) by blending commercial PC with a low molecular weight PC oligomer. The oligomer was synthesized by the addition of a large quantity of mono functional phenol groups, and the chain end group was reacted withp-tertiary butyl phenol (PTBP) to block the reactivity. The viscosity average molecular weight (M v ) for the oligomer was about 4,000–5,000 g/mol, compared to ∼19,000 g/mol for the PC blend obtained by blending 10 wt% of the prepared oligomer with the commercial grade PC (M v of 21,000 g/mol). The blended PC had a melt flow index of 45, which is 2.5 times higher, and a processing temperature that was 20 °C lower, than that of commercial grade PC having a similarM v .
Journal
"Macromolecular Research" – Springer Journals
Published: Dec 1, 2009