Degradation of nanofiber layers made of biobased polyamide 4

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24410%2F24%3A00013418" target="_blank" >RIV/46747885:24410/24:00013418 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/60461373:22310/24:43928848

Výsledek na webu

<a href="https://doi.org/10.1016/j.polymdegradstab.2024.110794" target="_blank" >https://doi.org/10.1016/j.polymdegradstab.2024.110794</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.polymdegradstab.2024.110794" target="_blank" >10.1016/j.polymdegradstab.2024.110794</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Degradation of nanofiber layers made of biobased polyamide 4

Popis výsledku v původním jazyce

Based on renewable raw materials, polyamide 4 has excellent mechanical properties, high hydrophilicity, and cotton -like water sorption. The problem is its low thermal stability near its melting point, which does not allow melt processing. With the development of the technology of electrostatic spinning of polymers from solutions, the attention of researchers has returned to polyamide 4. In this work, nanofiber layers of polyamide 4 with molar masses of 18,000 and 280,000 g/mol and diameters of 350 +/- 60 and 270 +/- 10 nm, respectively, were prepared by electrostatic spinning from a mixed solution of formic acid and dichloromethane. Subsequently, the layers were subjected to degradation in phosphate buffer at 37 and 60 degrees C. The electrostatic spinning process was shown to result in a decrease in the molar mass of the samples. During degradation in buffer at pH 7.4, the molar mass does not change significantly, but there is a change in the structure of the nanofibrous layers by bonding of the fibers, especially for low molecular weight PA4. In contrast to other studies, polyamide 4 is hydrolytically stable even in the form of nanofiber layers.

Název v anglickém jazyce

Degradation of nanofiber layers made of biobased polyamide 4

Popis výsledku anglicky

Based on renewable raw materials, polyamide 4 has excellent mechanical properties, high hydrophilicity, and cotton -like water sorption. The problem is its low thermal stability near its melting point, which does not allow melt processing. With the development of the technology of electrostatic spinning of polymers from solutions, the attention of researchers has returned to polyamide 4. In this work, nanofiber layers of polyamide 4 with molar masses of 18,000 and 280,000 g/mol and diameters of 350 +/- 60 and 270 +/- 10 nm, respectively, were prepared by electrostatic spinning from a mixed solution of formic acid and dichloromethane. Subsequently, the layers were subjected to degradation in phosphate buffer at 37 and 60 degrees C. The electrostatic spinning process was shown to result in a decrease in the molar mass of the samples. During degradation in buffer at pH 7.4, the molar mass does not change significantly, but there is a change in the structure of the nanofibrous layers by bonding of the fibers, especially for low molecular weight PA4. In contrast to other studies, polyamide 4 is hydrolytically stable even in the form of nanofiber layers.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

—

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2024

Kód důvěrnosti údajů

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

Název periodika

POLYMER DEGRADATION AND STABILITY

ISSN

0141-3910

e-ISSN

—

Svazek periodika

225

Číslo periodika v rámci svazku

JUL

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

9

Strana od-do

—

Kód UT WoS článku

001237856000001

EID výsledku v databázi Scopus

2-s2.0-85192089177