• Preparation of a Biaxially Oriented Polypropylene (BOPP)/CaCO3 Film with High Haze and Its Performance Study

  • Zhengyu Yao*, Tianjiao Hou*,† , and Xuan Shen*, **,†

  • *State Key Laboratory of Materials-oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
    **Zhangjiagang Institute of Nanjing Tech University, Suzhou 215600, P.R. China

  • 고헤이즈(High Haze) 특성을 가진 이축연신 폴리프로필렌/탄산칼슘 필름의 제조 및 성능 연구

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Abstract

To explore the feasibility and potential advantages of utilizing inexpensive and readily available calcium carbonate (CaCO3) in the preparation of biaxially oriented polypropylene (BOPP) matting films, a polypropylene (PP)/CaCO3 composite cast film was prepared and then stretched using a biaxial tensile testing machine. The impact of CaCO3 content on crystallinity, matting, and mechanical properties of the composite films was investigated. When CaCO3 was added at 35 wt%, the haze reached as high as 89.6%, showing excellent matting properties. Moreover, it was observed that either excessive or insufficient CaCO3 leads to a reduction in crystallinity. The surface morphology of the composite films was investigated using a scanning electron microscope (SEM). The film’s roughness was improved by the CaCO3 dispersion on the surface. This study provides an effective reference for the advancement of the plastic film industry in regard to superior packaging materials.


Keywords: biaxially oriented polypropylene, calcium carbonate, matting film, haze.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2024 Impact Factor : 0.6
  • Indexed in SCIE

This Article

  • 2026; 50(3): 402-409

    Published online May 25, 2026

  • 10.7317/pk..2026.50.3.402
  • Received on Mar 13, 2025
  • Revised on Nov 27, 2025
  • Accepted on Jan 15, 2026

Correspondence to

  • Tianjiao Hou* , Xuan Shen*, **

  • *State Key Laboratory of Materials-oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing 211816, P.R. China
    **Zhangjiagang Institute of Nanjing Tech University, Suzhou 215600, P.R. China

  • E-mail: hou_tianjiao@njtech.edu.cn, shenxuan@njtech.edu.cn