Electrospun Polylactide – Poly(ε-Caprolactone) Fibers: Struсture Characterization and Segmental Dynamic Response
Open accessPreprint — published as 10.3390/polym16101307
Abstract
Electrospun ultrathin fibers based on binary compositions of polylactide (PLA) and poly(ε-caprolactone) (PCL) with different ratios of polymer components from 0/100 to 100/0 wt. % were studied. Using a combination of thermal (DSC) and relaxation (EPR) measurements, the effect of biopolymers content on the characteristics of the crystal structure of PLA and PCL and the diffusive rotational mobility of the stable TEMPO radical in the amorphous regions of PLA/PCL compositions was shown. It was revealed that after PLA and PCL blending, significant changes in the degree of crystallinity of PLA, PCL segmental mobility, sorption capacity of the radical as well as activation energy of rotational diffusion in the amorphous regions of PLA/PCL composition are observed. The characteristic region of biopolymers’ composition from 50/50 to 30/70 % PLA/PCL blends ratio was found, where the inversion transition of PLA from dispersive medium to dispersive phase where an inversion transition is assumed when the continuous medium of the PLA transforms into a discrete phase. The performed studies made it possible for the first time to carry out a comprehensive analysis of the effect of the system component ratio on the structural and dynamic characteristics of the PLA/PCL film material at the molecular level.
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- Authors
- Karpova, S. G., Olkhov, A. A., Varyan, I. A., Khan, O. I., Botin, A. A., Naletova, A. V., Popov, A. A., & Iordanskii, A. L.
- Affiliations
- Russian Academy of Sciences (RU)
- Plekhanov Russian University of Economics (RU)
- Gubkin Russian State University of Oil and Gas (RU)
- Corresponding author
- Varyan, I. A.
- Venue
- Polymers
- Publisher
- MDPI AG
- Published
- 2024-04-02
- Volume
- 16
- Issue
- 10
- Pages
- 1307-1307
- ISSN
- 2073-4360 (ISSN-L)
- PMC
- PMC11125250
- OpenAlex
- W4396693786
- Cited by
- 4
- References
- 59
- Citations by year
- 2026: 1 · 2025: 2 · 2024: 1
- FWCI
- 0.42
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Locations
- Polymers (publishedVersion, cc-by)
- Preprints.org (acceptedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
- Funders
- RUDN University
- Topics
- Physical Sciences › Materials Science › Polymers and Plastics › Polymer crystallization and properties
- Physical Sciences › Materials Science › Biomaterials › biodegradable polymer synthesis and properties
- Physical Sciences › Materials Science › Biomaterials › Electrospun Nanofibers in Biomedical Applications
- Keywords
- polylactic acid, polycaprolactone, PLA/PCL blends, electrospun nanofibers, biopolymer blends, crystallinity, segmental mobility, TEMPO radical, blend ratio, polymer blend structure
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