Preparation of Green CD-PLA-PCL Composite Plasticizer and Its Application in Flexible PVC

Authors

  • Yunhan Wu College of Chemistry and Materials Science, Qinghai Minzu University, 81000, Xining, China; Qinghai Provincial Key Laboratory of Nanomaterials and Technology Qinghai Minzu University, 810007, Xining, China; Key Laboratory of Resource Chemistry and Eco-Environmental Protection on Tibetan Plateau, State Ethnic Affairs Commission
  • Xiaohui Li Shanxi Traditional Chinese Medical Hospital, 030024,Taiyuan, China
  • Tianyu Liu College of Chemistry and Materials Science, Qinghai Minzu University, 81000, Xining, China; Qinghai Provincial Key Laboratory of Nanomaterials and Technology Qinghai Minzu University, 810007, Xining, China; Key Laboratory of Resource Chemistry and Eco-Environmental Protection on Tibetan Plateau, State Ethnic Affairs Commission
  • Tong Shen College of Chemistry and Materials Science, Qinghai Minzu University, 81000, Xining, China; Qinghai Provincial Key Laboratory of Nanomaterials and Technology Qinghai Minzu University, 810007, Xining, China; Key Laboratory of Resource Chemistry and Eco-Environmental Protection on Tibetan Plateau, State Ethnic Affairs Commission
  • Yunjie Cai College of Chemistry and Materials Science, Qinghai Minzu University, 81000, Xining, China; Qinghai Provincial Key Laboratory of Nanomaterials and Technology Qinghai Minzu University, 810007, Xining, China; Key Laboratory of Resource Chemistry and Eco-Environmental Protection on Tibetan Plateau, State Ethnic Affairs Commission
  • Zezhong Lin College of Chemistry and Materials Science, Qinghai Minzu University, 81000, Xining, China; Qinghai Provincial Key Laboratory of Nanomaterials and Technology Qinghai Minzu University, 810007, Xining, China; Key Laboratory of Resource Chemistry and Eco-Environmental Protection on Tibetan Plateau, State Ethnic Affairs Commission https://orcid.org/0009-0001-9369-1415
  • Fengying Wang College of Chemistry and Materials Science, Qinghai Minzu University, 81000, Xining, China; Qinghai Provincial Key Laboratory of Nanomaterials and Technology Qinghai Minzu University, 810007, Xining, China; Key Laboratory of Resource Chemistry and Eco-Environmental Protection on Tibetan Plateau, State Ethnic Affairs Commission
  • Rongchao Xue College of Chemistry and Materials Science, Qinghai Minzu University, 81000, Xining, China; Qinghai Provincial Key Laboratory of Nanomaterials and Technology Qinghai Minzu University, 810007, Xining, China; Key Laboratory of Resource Chemistry and Eco-Environmental Protection on Tibetan Plateau, State Ethnic Affairs Commission

Keywords:

Polyvinyl Chloride, Plasticizer, Carbon Dots, Polylactic Acid, Polycaprolacton

Abstract

Polyvinyl chloride (PVC) is widely used in construction, medical devices, wire and cable insulation, and consumer products because of its low cost, flame retardancy, and corrosion resistance. However, its inherent rigidity and brittleness limit its use in flexible materials, making plasticization necessary. In this study, poly(lactic acid)-block-poly(caprolactone) (PLA-PCL) was synthesized by ring-opening polymerization, and multi-amino carbon dots (CDs) were prepared by a hydrothermal method and incorporated into PLA-PCL through acid-base interactions. The PLA/PCL ratio was optimized to improve the mechanical performance of flexible PVC. Results showed that CDs-PLA-PCL had good compatibility with PVC. Under the optimal formulation, the PVC/CDs-PLA-PCL film exhibited a tensile strength of 56.01 MPa and a toughness of 172.98 MJ/m³, representing 2.31- and 2.09-fold increases over DOP-plasticized PVC, respectively. The films also showed excellent migration resistance and fluorescence, indicating that CDs-PLA-PCL is a promising plasticizer for high-performance flexible PVC materials.

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Published

2026-06-09

How to Cite

Wu, Y., Li, X., Liu, T., Shen, T., Cai, Y., Lin, Z., … Xue, R. (2026). Preparation of Green CD-PLA-PCL Composite Plasticizer and Its Application in Flexible PVC. BioResources, 21(3), 6825–6845. Retrieved from https://ojs.bioresources.com/index.php/BRJ/article/view/25796

Issue

Vol. 21 No. 3 (2026)

Section

Research Article or Brief Communication