Process-induced morphology of poly(butylene adipate terephthalate)/poly(lactic acid) blown extrusion films modified with chain-extending cross-linkers

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F22%3A63554619" target="_blank" >RIV/70883521:28110/22:63554619 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2073-4360/14/10/1939" target="_blank" >https://www.mdpi.com/2073-4360/14/10/1939</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/polym14101939" target="_blank" >10.3390/polym14101939</a>

Result language

angličtina

Original language name

Process-induced morphology of poly(butylene adipate terephthalate)/poly(lactic acid) blown extrusion films modified with chain-extending cross-linkers

Original language description

Process-induced changes in the morphology of biodegradable polybutylene adipate terephthalate (PBAT) and polylactic acid (PLA) blends modified with various multifunctional chain-extending cross-linkers (CECLs) are presented. The morphology of unmodified and modified films produced with blown film extrusion is examined in an extrusion direction (ED) and a transverse direction (TD). While FTIR analysis showed only small peak shifts indicating that the CECLs modify the molecular weight of the PBAT/PLA blend, SEM investigations of the fracture surfaces of blown extrusion films revealed their significant effect on the morphology formed during the processing. Due to the combined shear and elongation deformation during blown film extrusion, rather spherical PLA islands were partly transformed into long fibrils, which tended to decay to chains of elliptical islands if cooled slowly. The CECL introduction into the blend changed the thickness of the PLA fibrils, modified the interface adhesion, and altered the deformation behavior of the PBAT matrix from brittle to ductile. The results proved that CECLs react selectively with PBAT, PLA, and their interface. Furthermore, the reactions of CECLs with PBAT/PLA induced by the processing depended on the deformation directions (ED and TD), thus resulting in further non-uniformities of blown extrusion films.

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

20903 - Bioproducts (products that are manufactured using biological material as feedstock) biomaterials, bioplastics, biofuels, bioderived bulk and fine chemicals, bio-derived novel materials

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

Polymers

ISSN

2073-4360

e-ISSN

—

Volume of the periodical

14

Issue of the periodical within the volume

10

Country of publishing house

CH - SWITZERLAND

Number of pages

11

Pages from-to

nestrankovano

UT code for WoS article

000801908300001

EID of the result in the Scopus database

2-s2.0-85130344822