Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes

Guven, Olgun; Sütekin, S. Duygu; KIRAÇ, Feyza

doi:10.55730/1300-0527.3545

Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes

S. Duygu SÜTEKİN, (Hacettepe Üniversitesi, Fen Fakültesi, Kimya Bölümü, Ankara, Türkiye)

Feyza KIRAÇ, (Hacettepe Üniversitesi, Fen Fakültesi, Kimya Bölümü, Ankara, Türkiye)

Olgun GUVEN (Hacettepe Üniversitesi, Fen Fakültesi, Kimya Bölümü, Ankara, Türkiye)

Turkish Journal of Chemistry

4 0

Yıl: 2023 Cilt: 47 Sayı: 2 Sayfa Aralığı: 386 - 398 Metin Dili: İngilizce DOI: 10.55730/1300-0527.3545 İndeks Tarihi: 12-06-2023

Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes

Öz:

An easy method is proposed to prepare poly(vinyl pyrrolidone) (PVP) and poly(N-isopropylacrylamide) (PNiPAAm) nanogels with sizes less than 100 nm. The underlying principle is to prepare dilute polymer solutions in acetone/water mixtures where acetone acts to break tridimensional structure of water hence disrupting the H-bonds bridging polymer coils causing separation and shrinkage in their sizes. Irradiation of these solutions by gamma-rays directly leads to the formation of intramolecular crosslinks within the coils resulting with nanogels with sizes smaller than precursor coils. While the average size of nanogels of PVP irradiated in water only is 236 nm, they were reduced to about 44 nm when irradiation was carried out in acetone/water solutions at near theta compositions. PNiPAAm nanogels were also synthesized by irradiating their dilute acetone/water solutions. Multimodal coil size distribution of PNiPAAm was converted into monomodal distribution with 70 nm average size and low dispersity by the addition of acetone. Irradiation of such solutions yielded PNiPAAm nanogels with 50 nm average size. Stability of nanogels was followed for 1 year not showing any changes in their sizes or size distributions. Nanogels were characterized by dynamic light scattering, scanning electron microscopy, and atomic force microscopy techniques.

Anahtar Kelime: Poly(vinyl pyrrolidone) poly(N-isopropylacrylamide) nanogel gamma irradiation size control effect of acetone

Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık

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APA	Sütekin S, KIRAÇ F, Guven O (2023). Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes. , 386 - 398. 10.55730/1300-0527.3545
Chicago	Sütekin S. Duygu,KIRAÇ Feyza,Guven Olgun Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes. (2023): 386 - 398. 10.55730/1300-0527.3545
MLA	Sütekin S. Duygu,KIRAÇ Feyza,Guven Olgun Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes. , 2023, ss.386 - 398. 10.55730/1300-0527.3545
AMA	Sütekin S,KIRAÇ F,Guven O Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes. . 2023; 386 - 398. 10.55730/1300-0527.3545
Vancouver	Sütekin S,KIRAÇ F,Guven O Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes. . 2023; 386 - 398. 10.55730/1300-0527.3545
IEEE	Sütekin S,KIRAÇ F,Guven O "Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes." , ss.386 - 398, 2023. 10.55730/1300-0527.3545
ISNAD	Sütekin, S. Duygu vd. "Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes". (2023), 386-398. https://doi.org/10.55730/1300-0527.3545

APA	Sütekin S, KIRAÇ F, Guven O (2023). Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes. Turkish Journal of Chemistry, 47(2), 386 - 398. 10.55730/1300-0527.3545
Chicago	Sütekin S. Duygu,KIRAÇ Feyza,Guven Olgun Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes. Turkish Journal of Chemistry 47, no.2 (2023): 386 - 398. 10.55730/1300-0527.3545
MLA	Sütekin S. Duygu,KIRAÇ Feyza,Guven Olgun Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes. Turkish Journal of Chemistry, vol.47, no.2, 2023, ss.386 - 398. 10.55730/1300-0527.3545
AMA	Sütekin S,KIRAÇ F,Guven O Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes. Turkish Journal of Chemistry. 2023; 47(2): 386 - 398. 10.55730/1300-0527.3545
Vancouver	Sütekin S,KIRAÇ F,Guven O Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes. Turkish Journal of Chemistry. 2023; 47(2): 386 - 398. 10.55730/1300-0527.3545
IEEE	Sütekin S,KIRAÇ F,Guven O "Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes." Turkish Journal of Chemistry, 47, ss.386 - 398, 2023. 10.55730/1300-0527.3545
ISNAD	Sütekin, S. Duygu vd. "Additive-free synthesis of poly(n-vinyl pyrrolidone) and poly(n-isopropylacrylamide) nanogels with controlled sizes". Turkish Journal of Chemistry 47/2 (2023), 386-398. https://doi.org/10.55730/1300-0527.3545