Dispersion of unfractionated microalgae in various polymers and its influence on rheological and mechanical properties

Cited 2 time in scopus
Metadata Downloads
Title
Dispersion of unfractionated microalgae in various polymers and its influence on rheological and mechanical properties
Author(s)
J H Yang; Jin-Ho YunHee-Sik Kim; J S Hong; K H Ahn
Bibliographic Citation
Korea-Australia Rheology Journal, vol. 35, pp. 19-29
Publication Year
2023
Abstract
This study investigates unfractionated microalgae (Chlorella sp. HS2 (HS2)) as a new resource of biomass to develop microalgae-based bioplastic materials. For the fabrication of microalgae-based bioplastics, HS2 is melt-compounded with various polymers with different solubility. In addition, lipid-extracted HS2 (HS2-LE) is tested to compare the dispersion of unfractionated microalgae. Dispersion of HS2 in the polymer is assessed with morphological observations and image analysis, further evaluated based on mechanical, thermal, FT-IR spectroscopic, and rheological measurements. HS2 disperses in polymer with broad size distribution and forms large millimeter-sized agglomerates throughout the composite regardless of type of polymers. Meanwhile, size distribution of HS2 aggregates is shifting to smaller region at mixing condition realizing strong stress transfer. For poly(ethylene?vinyl acetate) (EVA)/HS2 showing smaller size distribution, the addition of 10% HS2 increases elongation at break of EVA. Moreover, lipid-extracted HS2 (HS2-LE) increases further ductility and strength of EVA composite due to better dispersion of HS2-LE. This preliminary study to screen out of several polymers to develop microalgae-based bioplastics has brought out a potential of HS2 for bioplastic application.
Keyword
MicroalgaeBiomassMelt-compoundingBioplastics
ISSN
1226-119X
Publisher
Korea Soc-Assoc-Inst
DOI
http://dx.doi.org/10.1007/s13367-023-00050-5
Type
Article
Appears in Collections:
Synthetic Biology and Bioengineering Research Institute > Cell Factory Research Center > 1. Journal Articles
Files in This Item:
  • There are no files associated with this item.


Items in OpenAccess@KRIBB are protected by copyright, with all rights reserved, unless otherwise indicated.