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The Effect of Oligomer Blending on the Flow Properties of Polycarbonate
- Authors
- Cho, Sunghwan; Sunmi-Kim; Misuk-Cho; Lee, Youngkwan; Kim, Dongmin; Kim, Whangi
- Issue Date
- Dec-2009
- Publisher
- SPRINGER
- Keywords
- PC; PC oligomer; blend; high flow; viscosity
- Citation
- MACROMOLECULAR RESEARCH, v.17, no.12, pp.1021 - 1024
- Journal Title
- MACROMOLECULAR RESEARCH
- Volume
- 17
- Number
- 12
- Start Page
- 1021
- End Page
- 1024
- ISSN
- 1598-5032
- 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 with p-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 similar 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 2 1,000 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 degrees C lower, than that of commercial grade PC having a similar M-v.
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Related Researcher
- Kim, Dong Min
- Science & Technology (Department of Nanomaterials Engineering)