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A Natural Butter Glyceride as a Plasticizer for Improving Thermal, Mechanical, and Biodegradable Properties of Poly(lactide Acid)



Details

  • Personal Author:
  • Description:
    Polylactic acid (PLA) is a biobased and biodegradable thermoplastic polyester with great potential to replace petroleum-based plastics. However, its poor toughness and slow biodegradation rate affect broad applications of PLA in many areas. In this study, a glycerol triester existing in natural butter, glycerol tributyrate, was creatively explored and compared with previously investigated triacetin and tributyl citrate, as potential plasticizers of PLA for achieving improved mechanical and biodegradation performances. The compatibilities of these agents with PLA were assessed quantitively via the Hansen solubility parameter (HSP) and measured by using different testing methods. The incorporation of these compounds with varied contents ranging from 1 to 30 % in PLA altered thermal, mechanical, and biodegradation properties consistently, and the relationship and impacts of chemical structures and properties of these agents were systematically investigated. The results demonstrated that glycerol tributyrate is a novel excellent plasticizer for PLA and the addition of this triester not only effectively reduced the glass transition, cold crystallization, and melting temperatures and Young's modulus, but also led to a significant improvement in the enzymatic degradation rate of the plasticized PLA. This study paves a way for the development of sustainable and eco-friendly food grade plasticized PLA products. [Description provided by NIOSH]
  • Subjects:
  • Keywords:
  • ISSN:
    0141-8130
  • Document Type:
    Text
  • Funding:
    Grant
  • Genre:
    Journal Article
  • Place as Subject:
  • CIO:
    National Institute for Occupational Safety and Health (NIOSH)
  • Topic:
    Workplace Safety & Health
  • Location:
    North America
  • Volume:
    263
  • NIOSHTIC Number:
    nn:20069311
  • Citation:
    Int J Biol Macromol 2024 Apr; 263(Pt 2):130366
  • Contact Point Address:
    Gung Sun, Department of Biological and Agricultural Engineering, University of California, Davis, CA 95616, United States
  • Email:
    gysun@ucdavis.edu
  • Federal Fiscal Year:
    2024
  • Performing Organization:
    Iowa State University
  • Peer Reviewed:
    False
  • Part Number:
    2
  • Start Date:
    20210930
  • Source Full Name:
    International Journal of Biological Macromolecules
  • End Date:
    20250929
  • Collection(s):
  • Main Document Checksum:
    urn:sha-512:46cbe58f8ce9966a56a2566d11d3eb033c3678944dd6793796fda7acc47988cf53de5ac0b62104043286e6e8925d307804de7b3601fe9ffaf3ca18cbf1ad497e
  • Download URL:
  • File Type:
    Filetype[PDF - 6.68 MB ]
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