Chitosan-containing electrospun poly(ethylene oxide)-polybutadiene-CNT fibers

Autor(en)

Baran Sarac, Remzi Gürbüz, Viktor Soprunyuk, Eray Yüce, Amir Rezvan, Wilfried Schranz, Jürgen Eckert, Ali Ozcan, A. Sezai Sarac

Abstrakt

Cross-linked polymer composite fibers are gaining more and more interest in the fields of drug delivery, bone regeneration and biomineralization. This study focuses on the replacement of the radical initiator by photoinitiation via benzophenone, resulting in poly(ethylene oxide)-polybutadiene-carbon nanotube (PEO-PBu-CNT) nanofibers. The inclusion of small amounts of CNTs increases the rupture temperature and the first glass transition temperature Tg1 of the composite by 28 and 23 K, respectively, while decreasing the second glass transition temperature Tg2 by 20 K determined by dynamic mechanical analysis. A twice higher initial storage modulus of ~44 MPa can be detected for the CNT-containing samples, indicating the stiffening effect due to CNT addition. Primary X-ray diffraction peaks of PEO shift by 0.42° towards lower angles by the inclusion of CNTs, accounting for the generation of free volume within the polymer composite. Two orders of magnitude increase in Bode magnitude with a rise in Bode angle from 6° to 56° is detected by electrochemical impedance spectroscopy for the UV-cured PEO-PBu-CNT. Entanglement between the fibers, as well as a rough surface with a rigid structure, is observed upon small CNT additions. Finally, attenuated total reflectance—Fourier transform infrared and Raman spectroscopy allow the detection of the main peaks and intensity changes of these polymer composite structures for the UV-cured and uncured states.

Organisation(en)

Physik Funktioneller Materialien

Externe Organisation(en)

Österreichische Akademie der Wissenschaften (ÖAW), Eskisehir Technical University, Montanuniversität Leoben, İstanbul Teknik Üniversitesi

Journal

Polymers for Advanced Technologies

Band

35

Anzahl der Seiten

11

ISSN

1042-7147

DOI

https://doi.org/10.1002/pat.6403

Publikationsdatum

04-2024

Peer-reviewed

Ja

ÖFOS 2012

103023 Polymerphysik

Schlagwörter

ASJC Scopus Sachgebiete

Polymers and Plastics

Link zum Portal

https://ucrisportal.univie.ac.at/de/publications/c885301d-fd19-4f8c-8b62-da278d953c05