Rapid Crystallization of Polycarbonate by Shock-Cooling and Freeze-Drying Method

Gending Ji Department of Chemistry, The Institute of Coordination Chemistry Nanjing University, Nanjing, 210093, P.R. of China

Fengting Li Department of Chemistry, The Institute of Coordination Chemistry Nanjing University, Nanjing, 210093, P.R. of China

Wei Zhu Department of Chemistry, The Institute of Coordination Chemistry Nanjing University, Nanjing, 210093, P.R. of China

Qingping Dai Department of Chemistry, The Institute of Coordination Chemistry Nanjing University, Nanjing, 210093, P.R. of China

Gi Xue Department of Chemistry, The Institute of Coordination Chemistry Nanjing University, Nanjing, 210093, P.R. of China

Xinhong Gu Department of Chemistry, Syracuse University, Syracuse, New York, 13244, USA

Abstract

Rapid crystallization of a polycarbonate has been achieved by shock-cooling its very dilute benzene solution and then by sublimationof the solvent under vacuum. The degree of crystallinity of this treated polycarbonate is 42.5% or 46.4% by differential scanning calorimetry (DSC) or wide-angle X-ray diffraction (WAXD) studies respectively. These values are significantly higher than that of the sample prepared by hot precipitation technique.

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Rapid Crystallization of Polycarbonate by Shock-Cooling and Freeze-Drying Method

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Rapid Crystallization of Polycarbonate by Shock-Cooling and Freeze-Drying Method

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