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Pavlina Holcapkova, Petr Stloukal, Pavel Kucharczyk, Maria Omastova, Adriana Kovalcik
Original Title
Anti-hydrolysis effect of aromatic carbodiimide in poly(lactic acid)/wood flour composites
Type
journal article in Web of Science
Language
English
Original Abstract
Poly(lactic acid) (PLA) filled with wood flour (WF) is more susceptible to hydrolysis compared to pure PLA. This work shows that the hydrolysis reactions leading to chain scission can be hindered by using 2 wt% of bis(2,6-diisopropylphenyl)carbodiimide (ZIKA). It was found that the addition of ZIKA supports the crosslinking of PLA/WF composite. The crosslinking slightly hindered the annealing efficiency of wood flour and increased the stiffness of biocomposites. The thermal stability of biocomposites containing ZIKA was slightly improved. The relevance of the antihydrolysis effect of ZIKA during melt processing of biocomposites was correlated with the rheological and molar mass properties. The hydrolytic stability of biocomposites was determined under buffer solution conditions at accelerated temperature 80 °C and pH of 7. The determined lower depolymerisation and hydrolysis rates of PLA/WF-ZIKA composites indicate that the service lifespan of biocomposites can be prolonged by the addition of ZIKA additive.
Keywords
Biocomposite, Environmental degradation, Rheological properties, Thermal analysis
Authors
Released
5. 10. 2017
Publisher
Elsevier
Location
Amsterdam
ISBN
1359-835X
Periodical
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
Year of study
103
Number
1
State
United Kingdom of Great Britain and Northern Ireland
Pages from
283
Pages to
291
Pages count
8
URL
https://www.sciencedirect.com/science/article/pii/S1359835X17303615
BibTex
@article{BUT140742, author="Adriána {Kovalčík}", title="Anti-hydrolysis effect of aromatic carbodiimide in poly(lactic acid)/wood flour composites", journal="COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING", year="2017", volume="103", number="1", pages="283--291", doi="10.1016/j.compositesa.2017.10.003", issn="1359-835X", url="https://www.sciencedirect.com/science/article/pii/S1359835X17303615" }