Fully biobased biodegradable elastomeric polymer blends based on PHAs

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F25%3A63597442" target="_blank" >RIV/70883521:28110/25:63597442 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2073-4360/17/21/2811" target="_blank" >https://www.mdpi.com/2073-4360/17/21/2811</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/polym17212811" target="_blank" >10.3390/polym17212811</a>

Result language

angličtina

Original language name

Fully biobased biodegradable elastomeric polymer blends based on PHAs

Original language description

This study examines binary blends of three types of polyhydroxyalkanoates (PHAs)—poly(3-hydroxybutyrate) (PHB), poly(3-hydroxybutyrate-co-3-hydroxyhexanoate) (PHBH), and poly(3-hydroxybutyrate-co-4-hydroxybutyrate) (P3HB4HB)—with a focus on their rheological, thermal, and mechanical behavior. The blends exhibit partial miscibility in both the melt and solid states. Glass transition analysis revealed that semicrystalline/amorphous PHA combinations are fully miscible (single Tg) at amorphous PHA contents below 30 wt%. Above this threshold, a two-phase morphology develops, consisting of crystalline spherulites embedded in an amorphous matrix. When the amorphous PHA content reached ≥30 wt%, the blends could be oriented by stretching, yielding materials that display thermoplastic elastomer (TPE)-like behavior without chemical modification of the base polymers. Thermal and mechanical characterization, supported by X-ray diffraction of samples before and after orientation, confirmed that the elastomeric properties originate from the multiphase architecture formed by crystalline and amorphous domains interconnected through a miscible amorphous fraction.

Czech name

—

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

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Publication year

2025

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

17

Issue of the periodical within the volume

21

Country of publishing house

CH - SWITZERLAND

Number of pages

24

Pages from-to

nestránkováno

UT code for WoS article

001612625500001

EID of the result in the Scopus database

2-s2.0-105021402760