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Polymer-Plastics Technology and Engineering Volume 49, 2010 - Issue 12
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Original Articles

The Microcellular Foaming of Polycarbonate/Polystyrene Blends

Yong Yang Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, China
,
Haobin Zhang Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, China
&
Wenge Zheng Ningbo Key Lab of Polymer Materials, Ningbo Institute of Material Technology and Engineering, Chinese Academy of Sciences, Ningbo, ChinaCorrespondence[email protected]
Pages 1214-1222 | Published online: 15 Sep 2010
 
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Abstract

The process of cell nucleation and growth in polycarbonate (PC)/polystyrene (PS) blends was investigated by altering the foaming temperature. It was found that cell nucleation and growth first took place in PS droplets. Microcellular samples with the average cell size of 2.4–8.4 µm, cell density of 3.20 × 109–9.68 × 1010 cells/cm3 have been prepared under a very low saturation pressure, and the effect of blend morphology on the foaming of PC/PS blends with different blend ratios has been also studied. The experiment results showed that the cell sizes and the cell densities of PC/PS foams were controlled by changing the blend ratio.

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