Anomalous viscosity decrease of polycarbonate by addition of polystyrene

• Sako, Takumi

• Date, Jitsuhiro

• Hagi, Misaki

• Hiraoka, Tatsuhiro

• Matsuoka, Shinji

• Yamaguchi, Masayuki

Abstract

The shear viscosity of binary blends comprising polycarbonate (PC) and low-molecular-weight polystyrene (L-PS) was examined. It was found that the viscosity of PC significantly decreases by the addition of L-PS. Although the dynamic mechanical properties indicated that L-PS is immiscible with PC, the morphology observation of the extruded strand clarified that shear-induced phase-mixing occurs. Furthermore, the viscosity decrease was found to be pronounced in the high shear stress condition, which is much more obvious than that by the addition of low-molecular-weight PC. Consequently, the addition of L-PS improves the flowability at injection-molding greatly.

identifier:https://dspace.jaist.ac.jp/dspace/handle/10119/17055

Journal

• Polymer

  Polymer 170 135-141, 2019-03-11

  Elsevier

Keywords

• Viscoelasticity
• Capillary flow
• Polymer blend

Details

• CRID: 1050005987809833984
• NII Article ID: 120006995253
• ISSN: 00323861
• DOI: 10.1016/j.polymer.2019.03.015
• Web Site: http://hdl.handle.net/10119/17055
• Web Site: https://api.elsevier.com/content/article/PII:S0032386119302290?httpAccept=text/xml
• Web Site: https://api.elsevier.com/content/article/PII:S0032386119302290?httpAccept=text/plain
• Text Lang: en
• Article Type: journal article
• Data Source:
  • IRDB
  • Crossref
  • CiNii Articles
  • KAKEN