Processing stabilization of poly(3-hydroxybutyrate)/poly(lactic acid) blends with oligomeric carbodiimide
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F19%3APU130250" target="_blank" >RIV/00216305:26310/19:PU130250 - isvavai.cz</a>
Result on the web
<a href="https://www.scientific.net/MSF.955.7" target="_blank" >https://www.scientific.net/MSF.955.7</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.4028/www.scientific.net/MSF.955.7" target="_blank" >10.4028/www.scientific.net/MSF.955.7</a>
Alternative languages
Result language
angličtina
Original language name
Processing stabilization of poly(3-hydroxybutyrate)/poly(lactic acid) blends with oligomeric carbodiimide
Original language description
Reactivity of five reactive agents with two biopolyesters, poly(3-hydroxybutyrate) (PHB) and poly(lactic acid) (PLA), was studied in situ during processing in laboratory kneader with simultaneous recording of a melt torque. Among them only Raschig, an oligomeric carbodiimide based additive, was proven to enhance melt viscosity of both. In order to find out the most efficient level of this additive for stabilizing of both polymers and PHB/PLA (70/30 w/w) blend, different concentrations were studied by means of melt torque monitoring, rheology time tests and gel permeation chromatography. Results showed the same trend for neat polymers and their blend. Addition of more than 0.5 % wt. did not have any further positive effect on molecular weight or complex viscosity of the melt. Higher amount is not consumed during the reaction and is left in the sample. Therefore, this amount was used for processing stability studies on PHB/PLA blends by subsequent extrusion cycles. Melt volume-flow rate of extruded samples was obtained and results showed lower values for all stabilized blends comparing to the first extrusion sample of non-stabilized blend. At the same, stability of the blends is secured up to the third extrusion cycle.
Czech name
—
Czech description
—
Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
—
OECD FORD branch
10404 - Polymer science
Result continuities
Project
<a href="/en/project/LO1211" target="_blank" >LO1211: Materials Research Centre at FCH BUT- Sustainability and Development</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>S - Specificky vyzkum na vysokych skolach
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Materials Science Forum
ISSN
1662-9752
e-ISSN
—
Volume of the periodical
955
Issue of the periodical within the volume
2019
Country of publishing house
CH - SWITZERLAND
Number of pages
6
Pages from-to
7-12
UT code for WoS article
—
EID of the result in the Scopus database
2-s2.0-85071032315