Blends of poly(hydroxypropyl methacrylate) with 4-vinyl-co-N-vinyl--2-pyrrolidone and with vinyltrimethylsilane-co-N-vinyl-2-pyrrolidone copolymers. The effect of copolymer composition on interpolymer compatibility

D. Radić; N. Gatica; L. Gargallo

Published : 2022-09-19

Vol. 46 No. 11-12 (2001)

Blends of poly(hydroxypropyl methacrylate) with 4-vinyl-co-N-vinyl--2-pyrrolidone and with vinyltrimethylsilane-co-N-vinyl-2-pyrrolidone copolymers. The effect of copolymer composition on interpolymer compatibility

D. Radić N. Gatica L. Gargallo

Abstract

Glass transition temperatures (Figs. 1, 3), DSC and TGA ther-mograms (Figs. 2, 4), and Fourier transform infrared (FTIR) spectra (Fig. 5) showed the binary blends (Table 1) of poly(2-hydroxypropyl methacrylate) (PHPMA) with 4-vinylpyridine-co-N-vinyl-2-pyrrolidone (4-VPy-co-VP) to be compatible over the whole range of compositions. The blends of PHPMA with vinyltrimethylsilane-co-N-vinyl-2-pyrrolidone (VTMS-co-VP) were found \o be compatible up to VTMS contents of ~ 25 wt. %. The former blends (Figs. 1, 2) are believed to be compatible on account of H-bon-ding of PHPJMA's OH with the 4VPy and VP units of 4VPy-co-VP. In the latter blends, up to 25.7% of VTMS, H-bonds between PHPMA's OH groups and VP units suffice to provide compatibility, but at >25.7 wt. % VTMS, hydrophobic interactions of the VTMS moieties prevail and phase separation occurs.

Keywords

mieszaniny polimer-kopolimer ; współmieszalność, skład kopolimeru ; poli (metakrylan 2-hy-droksypropylu) ; kopolimer 4-winylopirydyna/N-winylo-2-pi-rolidon ; kopolimer winylotrimetylosilan/N-winylo-2-pirolidon polymer-copolymer blends ; interpolymer compatibility ; phase separation, poly(2-hydroxypropyl methacrylate) ; 4-vinylpyridine-co-N-vi-nyl-2-pyrrolidone and vinyltrimethylsilane-co-Af-vmyl-2-pyrrolidone copolymers

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Radić, D., Gatica, N., & Gargallo, L. (2022). Blends of poly(hydroxypropyl methacrylate) with 4-vinyl-co-N-vinyl--2-pyrrolidone and with vinyltrimethylsilane-co-N-vinyl-2-pyrrolidone copolymers. The effect of copolymer composition on interpolymer compatibility. Polimery, 46(11-12), 823–827. Retrieved from https://ichp.vot.pl/index.php/p/article/view/2139

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D. Radić dradic@puc.cl

Affiliation
Departamento de Quimica Fisica, Faculted de Quimica pontificia Universidad Católica de Chile Casilla 306, Correo 22, Santiago, Chile

N. Gatica

L. Gargallo