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Study on the effects of sCMF and lignocellulose addition on eco-friendly PP composite materials

  • Journal of the Korean Crystal Growth and Crystal Technology
  • Abbr : J. Korean Cryst. Growth Cryst. Technol.
  • 2026, 36(2), pp.71~77
  • DOI : 10.6111/JKCGCT.2026.36.2.071
  • Publisher : The Korea Association Of Crystal Growth, Inc.
  • Research Area : Engineering > Materials Science and Engineering
  • Received : May 14, 2026
  • Accepted : June 16, 2026
  • Published : June 30, 2026

Yu-Jin Park 1,  Min Seong Lee 2

1한서대학교
2리베이션 (REVATION)

Accredited

ABSTRACT

This study investigated changes in the physical and mechanical properties of polypropylene (PP) composites reinforced with sCMF (silica-coated cellulose microfiber) and lignocellulose to develop eco-friendly bioplastics suitable for injection-molded household goods, films, and trays. The total cellulose content was fixed at 30 wt%, while portions of conventional cellulose were replaced with sCMF and lignocellulose. Density, melt flow rate (MFR), tensile strength, and impact strength were measured after extrusion and injection molding processes. The density values were approximately 1.03 g/cm³ for most samples, while the CNL5T sample containing Talc increased to 1.07 g/cm³. The MFR decreased from 4.8 g/10 min for the control sample (CLB30) to 2.5–4.5 g/10 min for the modified samples. Tensile strength increased from 19.8 MPa for CLB30 to 20.8–23.2 MPa, with CNL10 showing the highest value. Impact strength remained in the range of 45–51 J/m for most samples, similar to CLB30 (46 J/m), whereas CNL5T decreased to 35 J/m. These results indicate that the physical and mechanical properties of cellulose-based PP composites can be controlled by the type and substitution ratio of modified cellulose-based fillers and auxiliary additives.

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