Copolymers and terpolymers of vinyl phosphonic acid, acrylonitrile, methyl acrylate, and vinyl acetate. Thermal oxidative stabilization and their nanofiber

ABSTRACT

Copolymers and terpolymers of acrylonitrile (AN), methyl acrylate (MA), vinyl acetate (VA), and vinyl phosphonic acid (VPA) were synthesized. Thermal gravimetric analysis studies showed that the decomposition of PANMAVPA and PANVAVPA terpolymers started at lower temperatures than PANMA and PANVA copolymers. VPA and MA caused an increase in the ring formation of pendant nitrile groups and the total ash content of PANMAVPA terpolymer. During the thermal oxidative treatment (TOS) of PANVAVPA, the phosphonic acid moiety accelerated double bond formation via acetic acid elimination. 151–340 nm nanofibers were successfully produced from copolymers and terpolymers.

GRAPHICAL ABSTRACT

KEYWORDS:

• Flame-retardant
• nanofiber
• phosphorous
• polyacrylonitrile
• vinyl phosphonic acid

Acknowledgments

The authors would like to thank the Scientific and Technical Research Council of Turkey (TUBITAK) 2244 Industrial Ph.D. Program -Istanbul Technical University-Arçelik Project No: 118C104. The authors acknowledge funding from the Research Fund of the Istanbul Technical University, Turkey (ITU BAP; Project No.: TDK-2021-43296).

Disclosure statement

No potential conflict of interest was reported by the author(s).

Supplementary material

Supplemental data for this article can be accessed online at https://doi.org/10.1080/25740881.2023.2250863.

Additional information

Funding

The work was supported by the the Scientific and Technical Research Council of Turkey (TUBITAK) 2244 Industrial Ph.D. Program -Istanbul Technical University-Arcelik Project No: 118C104. [ITU BAP; Project No.: TDK-2021-43296].

Notes on contributors

Elif Keskin

Elif Akşit, is currently a PhD student in Istanbul Technical University, Turkey. She obtained her BSc and MSc degree in Chemistry Department of Istanbul Technical University in 2017 and 2019, respectively. Her research interests are polymer composites, flame retardants, polyurethane, and organic chemistry.

Nesrin Köken

Nesrin Köken is currently a Lecturer and Researcher in the Organic Chemistry group in Chemistry Department, and Polymer Science and Technology Programmers at Istanbul Technical University. She obtained her BSc in Chemistry Department in 1989, her MSc and PhD degrees in chemistry at the same university in 1992 and 1997, respectively. She specializes in water-based polymerisation, emulsions polymerisation, conducting polymer and copolymers.

Nilgün Kızılcan

Nilgün Kızılcan is currently a Lecturer and Researcher in the Organic Chemistry group in Chemistry Department, Nano Science & Nano Technology Programmers and Polymer Science and Technology Programmers at Istanbul Technical University. She obtained her BSc in Chemical Engineering Department in 1986, her MSc and PhD degrees in Chemistry at the same university in 1990 and 1995, respectively. She specializes in resins, conducting polymer and copolymers.

Ahmet Akar

Ahmet Akar is emeritus professor. He is interested in Organic Chemistry, Nano Science &Nano Technology and Polymer Science and Technology. He obtained his BSc/MSc in Chemical Engineering Faculty in 1973 and his PhD degree in molecular science department, Sussex University, England in 1978. He specializes in water-based polymerisation, condensation polymers, polyurethane, conducting polymers and fire retardant additives.