Compatibilization and Toughening of Biodegradable Polylactic Acid/Cellulose Acetate Films by Polyamide Amine Dendrimers

Due to the poor compatibility caused by the large difference in hydrophilicity and interface between polylactic acid (PLA) and cellulose acetate (CA), the blending of the two materials is difficult and the application is limited. To solve this problem, a type of polyamide amine (PAMAM) dendrimer was...

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Bibliographic Details
Published inJournal of polymers and the environment Vol. 30; no. 5; pp. 1758 - 1771
Main Authors Huang, Yansong, Jin, Yujuan, Wang, Bo, Tian, Huafeng, Weng, Yunxuan, Men, Shuang
Format Journal Article
LanguageEnglish
Published New York Springer US 01.05.2022
Springer Nature B.V
Subjects
Acetic acid
Biodegradability
Biodegradation
Cellulose acetate
Chemistry
Chemistry and Materials Science
Compatibility
Crystallization
Dendrimers
Environmental Chemistry
Environmental Engineering/Biotechnology
Food packaging
Hydrophobicity
Industrial Chemistry/Chemical Engineering
Materials Science
Mechanical properties
Original Paper
Oxygen
Permeability
Polyamide resins
Polyamides
Polylactic acid
Polymer blends
Polymer Sciences
Sustainable packaging
Tear strength
Polyamide-amine (PAMAM) dendrimer
Biodegradable
PLA
Compatibility
CA
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Summary:Due to the poor compatibility caused by the large difference in hydrophilicity and interface between polylactic acid (PLA) and cellulose acetate (CA), the blending of the two materials is difficult and the application is limited. To solve this problem, a type of polyamide amine (PAMAM) dendrimer was introduced to modify PLA/CA blends in this work. The results showed that PAMAM could improve the compatibility of PLA/CA blends, promote the distribution of CA and crystallization of PLA. At the same time, adding PAMAM could enhance the mechanical properties of the blend material, and the toughness and tear strength were increased by 551% and 141%, respectively. In addition, the incorporation of PAMAM increased hydrophobicity and oxygen permeability of PLA/CA blends, and the oxygen permeability could be increased by up to three orders of magnitude. Degradation test results showed that the blend exhibited good biodegradability. The overall performance of the PLA/CA blend film was optimal when the content of PAMAM was 3 phr. The biodegradable blend films with excellent performance provided wide application prospect in the food green packaging fields.
ISSN:1566-2543
1572-8919
DOI:10.1007/s10924-021-02304-1