A survey on surface morphology control of cross-linked poly(N-vinylpyrrolidone polymer particle via inverse suspension polymerization
Yükleniyor...
Dosyalar
Tarih
2021
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Scientific Technical Research Council Turkey-TUBITAK
Erişim Hakkı
info:eu-repo/semantics/openAccess
Özet
Abstract: This study mainly centers on the preparation and characterization of the cross-linked poly(NVP) microspheres by means
of inverse suspension polymerization technique. The effect of the cross-linker content, the volumetric ratio of dispersed phase to
suspension phase (DP/CP), agitation rate, and the reaction temperature on the characteristics of the microparticles were investigated
meticulously using SEM, and the optimum preparation conditions were determined. The findings revealed that the morphological and
surface properties of the obtained particles could be controlled easily by changing these parameters. Accordingly, the microparticles
having the perfect spherical with smooth surface and good roundness, dumbbell-shaped, snowman besides dented, sunked and macelike appearance were obtained. At low cross-linker content, bulky, distorted and accumulated particles were detected, while more stable,
well-defined, and desired microspheres were observed at high content. Furthermore, as DP/CP decreased, the microspheres tended to
have collapsed, distorted and little wrinkled (buckled) and indented morphologies due to the heterogeneous shrinkages in droplets.
Additionally, it was apparent that the increment in stirring rates caused systematically decrement in the size of the microspheres. At
relatively higher reaction temperature, the mace-like microparticles having needle-like occurrences extending outwardly perpendicular
on the surface started to appear due to the stiff character of the cross-linker.
Açıklama
This work was supported by BAIBU research fund with the grant no. BAP 2014.03.03.686. The authors would like to thank to lecturer Nevin SOYLU for SEM measurements.
Anahtar Kelimeler
Crosslinked Microspheres, Poly(NVP), Inverse Suspension Polymerization, Surface Control
Kaynak
Turkish Journal of Chemistry
WoS Q Değeri
Q4
Scopus Q Değeri
Q3
Cilt
45
Sayı
5
Künye
SOYKAN, U., & Cetin, S. (2021). A survey on surface morphology control of cross-linked poly (N-vinylpyrrolidone) polymer particle via inverse suspension polymerization. Turkish Journal of Chemistry, 45(5), 1504-1516.
