• Functionalization Modification of the Fischer-Tropsch Wax to Improve the Mechanical and Crystallization Properties of the Recycled Polypropylene/Attapulgite Composites
  • Tian-Jiao Zhao# , Fu-Hua Lin*,# , Shuang-Dan Mao, Ya-Peng Dong, Jia-Le Zhao, Wen-Ju Cui**, Shu-Hui Wang, Ding-Yi Ning, Jing-Qiong Lu, and Bo Wang 

  • School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China
    *School of Traffic Engineering, Shanxi Vocational University of Engineering Science and Technology, Taiyuan 030619, China
    **School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan 030024, China

  • 재활용 폴리프로필렌/아타풀자이트 복합재료의 기계적 및 결정화 특성 개선을 위한 피셔-트롭쉬 왁스(Fischer-Tropsch Wax)의 기능화 변형
  • Reproduction, stored in a retrieval system, or transmitted in any form of any part of this publication is permitted only by written permission from the Polymer Society of Korea.


The attapulgite (ATP) with unique one-dimensional rod-like structure was used to improve the mechanical and crystallization properties of the recycled polypropylene (rPP). In order to increase the compatibility of the polar ATP and the non-polar rPP, the maleic anhydride (MAH) was grafted onto the fischer-tropsch wax (FTW) then reacted with ATP to prepare FATP. The tensile, flexural and impact strength of the composites were maximized at the FATP content was 3 wt%, increased by 13.09, 17.56, and 101.92% compared with rPP, and reaching the level of the PP. Due to the improved compatibility, the mechanical properties of the rPP/FATP composites were increased compared with the rPP/ATP composites at the same addition. Moreover, the differential scanning calorimetry (DSC) analysis proved that the addition of the ATP or FATP improved the crystallization properties of the rPP. The crystallization temperature (Tp) of the rPP, rPP/3 wt% ATP, and rPP/3 wt% FATP was 126.31, 127.86, and 129.37 ℃, respectively. The non-isothermal and isothermal crystallization kinetic results showed that the crystallization rate was increased with the addition of the ATP and FATP. Meanwhile, by reason of the synergistic effect of compatibility improvement and internal lubrication, the crystallization rate of the rPP/FATP composites was faster than the rPP/ATP composites. However, the ATP or FATP added in rPP had no effect on the spherulites growth mode of the composites. Above all, the scanning electron micrographs (SEM) results provided intuitive evidence which the compatibility between FATP and rPP was greatly improved.

Keywords: recycled polypropylene, attapulgite, fischer-tropsch wax, compatibility, properties.

  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2022 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2024; 48(3): 253-264

    Published online May 25, 2024

  • 10.7317/pk.2024.48.3.253
  • Received on Nov 7, 2023
  • Revised on Jan 22, 2024
  • Accepted on Jan 29, 2024

Correspondence to

  • Bo Wang
  • School of Chemical Engineering and Technology, Taiyuan University of Science and Technology, Taiyuan 030024, China

  • E-mail: