Comparative degradation study of a biodegradable composite based on polylactide with halloysite nanotubes and a polyacrylic acid copolymer

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28610%2F22%3A63560118" target="_blank" >RIV/70883521:28610/22:63560118 - isvavai.cz</a>

Result on the web

<a href="https://www.sciencedirect.com/science/article/pii/S2352492822012417?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S2352492822012417?via%3Dihub</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.mtcomm.2022.104400" target="_blank" >10.1016/j.mtcomm.2022.104400</a>

Result language

angličtina

Original language name

Comparative degradation study of a biodegradable composite based on polylactide with halloysite nanotubes and a polyacrylic acid copolymer

Original language description

This study investigates the optimal composition of two additives to accelerate the degradation mechanism of polylactide (PLA) material under different conditions: abiotic hydrolysis, biotic degradation and composting conditions at the laboratory scale level. The composites were prepared from a PLA matrix with a synthesised additive based on a copolymer of polylactic acid and polyacrylic acid (PLA-g-PAA) with inorganic filler halloysite (HNT). The aim was to design a composite material with improved physical and chemical properties and accelerated degradability than conventional PLA, which would apply to products incapable of mechanical or chemical recycling. The addition of HNT alone helped increase Young&apos;s modulus by 15-25 % but worsened the elongation, which was compensated by adding a second additive in the composite. The experimental data from abiotic hydrolysis and biodegradation were processed using appropriate kinetic models. Abiotic hydrolysis was recorded by changes in molecular weights and released carbon (GPC, TOC-L), confirming its acceleration in PLA/ 5H/20PLA-g-PAA composites by a faster release of ester bonds in PLA. A similar effect was observed during biotic degradation using the measured CO2 content (GC instrument), which was demonstrated by accelerating from 0.0238 day-1 for neat PLA to 0.0397 day-1. In composting conditions, the course was the fastest up to 45 days; samples containing additives were disintegrated by 94.1-99.8 %, without depreciating the properties of compost and plant germination.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10404 - Polymer science

Project

—

Continuities

S - Specificky vyzkum na vysokych skolach

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Materials Today Communications

ISSN

2352-4928

e-ISSN

—

Volume of the periodical

33

Issue of the periodical within the volume

Neuveden

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

14

Pages from-to

nestrankovano

UT code for WoS article

000876942900006

EID of the result in the Scopus database

2-s2.0-85137651521