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Synthesis of novel L-lactic acid-based plasticizers and their effects on the flexibility, crystallinity, and optical transparency of poly(lactic acid).
Hou, Boyou; Wang, Yanning; Li, Bingjian; Gong, Tianyang; Wu, Jianming; Li, Jinchun.
Afiliación
  • Hou B; School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
  • Wang Y; School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
  • Li B; Unipower Hydrogen Membrane Materials (Jiangsu) Research Institute Co., Ltd., China.
  • Gong T; School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China.
  • Wu J; Changshu Sanheng Building Material Co. Ltd, Changshu 215500, China.
  • Li J; School of Materials Science and Engineering, Changzhou University, Changzhou 213164, China; Jiangsu Key Laboratory of Environmentally Friendly Polymeric Materials, National-Local Joint Engineering Research Center of Biomass Refining and High-Quality Utilization, Changzhou University, Changzhou 21316
Int J Biol Macromol ; 273(Pt 2): 132826, 2024 Jul.
Article en En | MEDLINE | ID: mdl-38825277
ABSTRACT
Using bio-based plasticizers derived from biomass resources to replace traditional phthalates can avoid the biotoxicity and non-biodegradability caused by the migration of plasticizers during the application of plastics. In this study, L-lactic acid and levulinic acid were employed as the major biomass monomer to successfully fabricate L-lactic acid-based plasticizers (LBL-n, n = 1.0, 1.5, 2.0, 2.5) containing a diverse number of lactate groups. The plasticizing mechanism was explained, manifesting that L-lactic acid-based plasticizers containing a substantial number of lactate groups could effectively improve the flexibility of poly (lactic acid) (PLA), and the elongation at break was 590 %-750 %. Compared to LBL-1.5 plasticized-PLA films, the tensile strength and modulus of ketonized-LBL-1.5 (KLBL-1.5) plasticized-PLA films increased to 59 % and 163 %, indicating the ketal functionality of plasticizers enhanced the strength of PLA. Meanwhile, the increment of lactate groups and the introduction of the ketal group in the plasticizer increased the crystallization, migration, and volatilization stability of plasticized-PLA films and also kept their outstanding optical transparency. Besides, the biodegradability of KLBL-1.5 was investigated by active soil and Tenebrio molitor experiments, and its degradation products were characterized. The findings indicated that KLBL-1.5 was fully decomposed. Taken together, this paper offers new promise for developing high-efficiency and biodegradable plasticizers.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Plastificantes / Poliésteres Idioma: En Revista: Int J Biol Macromol Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Plastificantes / Poliésteres Idioma: En Revista: Int J Biol Macromol Año: 2024 Tipo del documento: Article País de afiliación: China Pais de publicación: Países Bajos