The effects of the deacetylation of chitin nanowhiskers on the performance of PCL/PLA bio-nanocomposites
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F23%3A00574964" target="_blank" >RIV/61389013:_____/23:00574964 - isvavai.cz</a>
Result on the web
<a href="https://www.mdpi.com/2073-4360/15/14/3071" target="_blank" >https://www.mdpi.com/2073-4360/15/14/3071</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3390/polym15143071" target="_blank" >10.3390/polym15143071</a>
Alternative languages
Result language
angličtina
Original language name
The effects of the deacetylation of chitin nanowhiskers on the performance of PCL/PLA bio-nanocomposites
Original language description
The multiple roles of organic nanofillers in biodegradable nanocomposites (NC) with a blend-based matrix is not yet fully understood. This work highlights combination of reinforcing and structure-directing effects of chitin nanowhiskers (CNW) with different degrees of deacetylation (DA), i.e., content of primary or secondary amines on their surface, in the nanocomposite with the PCL/PLA 1:1 matrix. Of importance is the fact that aminolysis with CNW leading to chain scission of both polyesters, especially of PLA, is practically independent of DA. DA also does not influence thermal stability. At the same time, the more marked chain scission/CNW grafting for PLA in comparison to PCL, causing changes in rheological parameters of components and related structural alterations, has crucial effects on mechanical properties in systems with a bicontinuous structure. Favourable combinations of multiple effects of CNW leads to enhanced mechanical performance at low 1% content only, whereas negative effects of structural changes, particularly of changed continuity, may eliminate the reinforcing effects of CNW at higher contents. The explanation of both synergistic and antagonistic effects of structures formed is based on the correspondence of experimental results with respective basic model calculations.n
Czech name
—
Czech description
—
Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
—
OECD FORD branch
10404 - Polymer science
Result continuities
Project
<a href="/en/project/LUAUS23004" target="_blank" >LUAUS23004: Nanotubular materials from natural polymers for medical applications</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2023
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polymers
ISSN
2073-4360
e-ISSN
2073-4360
Volume of the periodical
15
Issue of the periodical within the volume
14
Country of publishing house
CH - SWITZERLAND
Number of pages
15
Pages from-to
3071
UT code for WoS article
001037499000001
EID of the result in the Scopus database
2-s2.0-85166326028