FENG Yu-guang, TENG Feng, HUANG Shi-hua. Influence of 4-Vinylpyridine upon Appearance of Electrophoretic Element Applied for Image Displays[J]. 液晶与显示, 2010,25(5): 649-655
FENG Yu-guang, TENG Feng, HUANG Shi-hua. Influence of 4-Vinylpyridine upon Appearance of Electrophoretic Element Applied for Image Displays[J]. 液晶与显示, 2010,25(5): 649-655DOI:
Influence of 4-Vinylpyridine upon Appearance of Electrophoretic Element Applied for Image Displays
a spherical microsphere of poly (DVB-co- St-co- 4-VP) was prepared in methanol and by precipitation polymerization. After characterizations
no glass transition temperature was observed by DSC. Thermal stabilization of poly (DVB-co-St-co- 4-VP) was changed with varying ratios of comonomers
and pyridyl on the surface of the spherical microsphere was detected by TG. The structure unit of poly (DVB-co-St-co-4-VP) was confirmed by FT-IR
and two absorption bands of 770~875 cm
-1
and 1 450~1 725 cm
-1
were assigned to divinylbenzene and styrene
and absorption peak at 1 600 cm
-1
was belonged to pyridyl. As a result
after analyzing appearances and diameters
the synthesizing mechanism different from existing theories was obtained and it was confirmed that appearance of product was dominated by hydrogen bond between pyridyl and hydroxyl.
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references
Lovell P A, El-Aasser M S. Emulsion polymerization and emulsion polymers
. England: John Wiley & Sons Ltd, 1997: 150-186.
Guha S, Mandal B M. Dispersion polymerization of acrylamide: Ⅲ. Partial isopropyl ester of poly(vinyl methyl ether-alt-maleic anhydride) as a stabilizer
. Colloid Interface Science, 2004, 271(1):55-59.
Dawkins J W, Neep D J, Shaw P L. Non-aqueous polystyrene dispersions: steric stabilization by partially hydro-lysed poly(vinyl alcohol) in methanolic media
. Polymer, 1994, 35(24):5366-5368.
Ye Q, Zhang X F, Xu X Q, et al. Uniform poly(vinyl acetate) particles by radiation-induced dispersion polymerization in polar media
. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 2003, 226(2):69-76.
Cordrey P W, Mikucki W. Hydrophilic copolymers:US, 4,032,599 . 1977-06-18.
Yamamoto R I, Cusano C M. 4-Vinylpyridine polymethacrylate containing lube oil compositions:US,4,081,385 . 1978-03-28.
Lambert S P, Wang X J. Process for the polymerization of 4-vinyl pyridine monomers:US,5861230 .1999-01-19.
Kondoa A, Fukudab H. Preparation of thermo-sensitive magnetic microspheres and their application to bioprocesses
. Colloids and Surfaces A: Physiochemical and Engineering Aspects,1999,153(3):435-438.
Zaitsev V S, Filimonov D S, Presnyakov I A, et al. Physical and chemical properties of magnetite and magnetite-polymer nanoparticles and their colloidal dispersions
. Colloid and Interface Science, 1999, 212(1):49-57.
Li W H, Li K, Stver H D H. Monodisperse poly(chloromethylstyrene-co-divinylbenzene) microspheres by precipi-tation polymerization
. Polym. Sci. Part A: Polym. Chem., 1999, 37(14):2295-2303.
Kennedy J P, Pernecker T. Method, dispersing agent and initiator for the dispersion polymerization of isobutylene:US,5733998 .1998-03-31.
Bliznyuk V,Assender H, Briggs A, et al. Surface glass transmition temperature of amorphous polystyrene mea-sured by SFM
. Macromolecule, 2002, 35(17):6613-6622.
van Ekenstein G A, Polushkin E, Nijland H,et al. Shear alignment at two length scales: comb-shaped supramolecules self-organized as cylinders-within-lamellar hierarchy
. Macromolecule,2003, 36(10):3684-3688.
Rasband W. ImageJ . Revision 1.41. USA: National Institutes of Health,2008.