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Crystallization properties of polycaprolactone composites filled with nanometer calcium carbonate
Author(s) -
Liang JiZhao,
Zhou Lin,
Tang ChakYin,
Tsui ChiPong
Publication year - 2012
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.38359
Subject(s) - materials science , crystallization , polycaprolactone , composite material , differential scanning calorimetry , nanometre , scanning electron microscope , calcium carbonate , composite number , filler (materials) , calcium stearate , dispersion (optics) , nanocomposite , chemical engineering , polymer , chemistry , raw material , physics , organic chemistry , optics , engineering , thermodynamics
Polycaprolactone (PCL) composites filled with nanometer calcium carbonate (nano‐CaCO 3 ) were prepared by means of a twin‐screw extruder in this study. The nano‐CaCO 3 surface treated with stearate. The crystalline properties of the PCL/nano‐CaCO 3 composites were measured with a differential scanning calorimeter to identify the influence of the nanometer filler content on the crystalline properties. The results show that the crystallization onset temperature, crystallization temperature, and crystallization end temperature of the composites were obviously higher than those of the unfilled PCL resin, and the crystallization degree (χ c ) of the composites increased with increasing particle weight fraction (ϕ f ) when ϕ f was more than 1%. When ϕ f was 1%, χ c of the composite was less than that of the unfilled PCL resin. Moreover, the dispersion of the inclusions in the matrix was observed by means of scanning electron microscopy. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013