Original Paper

Journal of Polymer Research

, Volume 18, Issue 6, pp 1947-1953

First online:

Morphological development of polypropylene in immiscible blends with cellulose acetate butyrate

  • Chao-Hua XueAffiliated withDivision of Textiles and Clothing, University of California
  • , Dong WangAffiliated withDivision of Textiles and Clothing, University of California
  • , Bei XiangAffiliated withDivision of Textiles and Clothing, University of California
  • , Bor-Sen ChiouAffiliated withBioproduct Chemistry and Engineering, USDA/WRRC/ARS
  • , Gang SunAffiliated withDivision of Textiles and Clothing, University of California Email author 

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Abstract

Isotactic polypropylenes (iPP) with different melt flow indexes were melt blended with cellulose acetate butyrate (CAB) and then prepared into microspheres or nanofibers following a novel process of producing well dispersed CAB/iPP immiscible blends and subsequent removal of the CAB matrix. The morphologies of iPP microspheres were investigated by a scanning electron microscopy, and the dimensions of iPP microspheres were evaluated. The melt viscosities of iPP, CAB, and CAB/iPP blends were measured by using a capillary rheometer. The influences of the viscosity, viscosity ratio, and composition ratio of iPP/CAB on the morphology formation of iPP in CAB matrix were studied.

Keywords

Immiscible polymer blends Polypropylene Viscosity ratio Micro-spherical beads