Fabricating Highly Reactive Bio-based Compatibilizers of Epoxidized Citric Acid To Improve the Flexural Properties of Polylactide/Microcrystalline Cellulose Blends

Epoxidized citric acid (ECA) is synthesized as a highly reactive bio-based compatibilizer to improve the flexural property of polylactide (PLA)/microcrystalline cellulose (MCC) blends. Confirmed by Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) analysis, ECA includes three ox...

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Bibliographic Details
Published in:Industrial & engineering chemistry research 2015-04, Vol.54 (15), p.3806-3812
Main Authors: Dai, Xinyan, Xiong, Zhu, Ma, Songqi, Li, Chao, Wang, Jinggang, Na, Haining, Zhu, Jin
Format: Article
Language:English
Subjects:
Blends
Cellulose
Citric acid
Compatibilizers
Fourier transforms
Modulus of rupture in bending
Polylactides
Polymer blends
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Summary:Epoxidized citric acid (ECA) is synthesized as a highly reactive bio-based compatibilizer to improve the flexural property of polylactide (PLA)/microcrystalline cellulose (MCC) blends. Confirmed by Fourier transform infrared (FTIR) and nuclear magnetic resonance (NMR) analysis, ECA includes three oxirane groups in its chemical structure with the rather high epoxy value at 0.76. After adding 1–5 wt % ECA in PLA/MCC blends, the interfacial adhesion between PLA and MCC is significantly improved. Accordingly, flexural strength, flexural modulus as well as impact strength of PLA/MCC/ECA blends are all improved and thus the increase of the flexural properties. This work suggests an effective way to create biobased compatibilizer with high reactivity and hereby displays a feasible way to fabricated fully bio-based PLA/MCC blends with high performance.
ISSN:0888-5885
1520-5045
DOI:10.1021/ie504904c