PREPARATION OF FUNCTIONAL POLYMER BEADS BASED ON POLY (2-OXAZOLINE)

基于聚(2-恶唑啉)的功能聚合物珠的制备

• 批准号: 05555249
• 负责人: KOBAYASHI Shiro
• 金额: $ 8.19万
• 依托单位: TOHOKU UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555249/
• 关键词: DISPERSION POLYMERIZATION; EMULSION POLYMERIZATION; MONODISPERSE POLYMER PARTICLES; POLY (2-OXAZOLINE); MACROMONOMER; HYDROPHILIC POLYMER; STABILIZER; EMULSIFIER; 親水性高分子; ポリマービーズ; ポリ(N-ビニルホルムアミド)

Emulsion copolymerization of stirene with a block-type amphiphilic poly (2-oxazoline) macromonomer having a quaternary ammonium group at the chain end was performed to produce monodisperse polymer particles in the sub-micron range. The particle diameter increased with decreasing the macromonomer concentration. Poly (2-oxazoline) chains and the ammonium group were localized on the particle surface.Dispersion polymerization of stirene in an aqueous alcohol solution using poly (2-ethyl-2-oxazoline) as a polymeric stabilizer was carried out to prepare micron-size monodisperse polystirene particles. As the water content of the solvent increased, the polymerization rate and the molecular weight of the polymer particles increased and the particle size decreased. The concentration of stabilizer and initiator also affected the particle size and size distribution.Dispersion polymerization of N-vinylformamide in polar media has been performed using poly (2-ethyl-2-oxazoline) as stabilizer. The polymerization in methanol gave micron-size monodisperse particles of highly hydrophilic polymers. Particle size increased as the stabilizer concentration decreased. The polymerization in the presence of a divinyl compound afforded crosslinking polymer particles. In using a hydrophilic poly (2-oxazoline) macromonomer bearing polymerizable styryl group instead of poly (2-ethyl-2-oxazoline) , monodisperse polymer particles in the sub-micron range were obtained. The macromonomer acted as a stabilizer as well as a comonomer. The substituent of the macromonomer affected the particle size.

将苯乙烯与在链端具有季铵基团的嵌段型两亲性聚(2-恶唑啉)大单体进行乳液共聚，以制备亚微米范围内的单分散聚合物颗粒。粒径随着大分子单体浓度的降低而增加。聚(2-恶唑啉)链和铵基定位在颗粒表面。以聚(2-乙基-2-恶唑啉)作为聚合物稳定剂，苯乙烯在醇水溶液中进行分散聚合，制备微米级单分散聚苯乙烯颗粒。随着溶剂中水含量的增加，聚合物颗粒的聚合速率和分子量增加，粒径减小。稳定剂和引发剂的浓度也影响粒径和粒径分布。以聚(2-乙基-2-恶唑啉)为稳定剂，在极性介质中进行了N-乙烯基甲酰胺的分散聚合。在甲醇中聚合得到微米尺寸的高亲水性聚合物的单分散颗粒。随着稳定剂浓度的降低，颗粒尺寸增大。在二乙烯基化合物存在下的聚合提供了交联聚合物颗粒。在使用带有可聚合苯乙烯基的亲水性聚(2-恶唑啉)大单体代替聚(2-乙基-2-恶唑啉)时，获得了亚微米范围内的单分散聚合物颗粒。大分子单体充当稳定剂以及共聚单体。大分子单体的取代基影响粒径。

项目成果

Hiroshi Uyama: "Emulsion Copdyrnerization of Sdyrene with Amphipilic Poly(2-oxazoline) Macromonomor Bearing Ammonio Group at the Cham End" Bulletin of the Chemical Society of Japan. 66. 3124-3127 (1993)

Hiroshi Uyama：“苯乙烯与两亲聚（2-恶唑啉）大分子在 Cham 末端带有氨基基团的乳液共缩”，日本化学会通报。

Hiroshi Uyama: "Dispersion Polymerization of Styrene Agueous Alcohol Solution:Effects of Reaction.Parameters on the Polymer Particle Formarion" Polymer International. 34. 339-344 (1994)

Hiroshi Uyama：“苯乙烯水醇溶液的分散聚合：反应的影响。聚合物颗粒形成的参数”Polymer International。

H.Uyama: "Dispeision Polymerization of Styrene in Agueous Alcohol Solution:Effects of Reaction Parameters on the Polymer Particle Formation" Polymer International. 34. 339-344 (1994)

H.Uyama：“苯乙烯在水性醇溶液中的分散聚合：反应参数对聚合物颗粒形成的影响”Polymer International。

H.UYAMA: "DISPERSION POLYMERIZATION OF STYRENE IN AQUEOUS ALCOHOL SOLUTION : EFFECTS OF REACTION PARAMETERS ON THE POLYMER PARTICLE FORMATION" POLYMER INTERNATIONAL. VOL34. 339-344 (1994)

H.UYAMA：“苯乙烯在酒精水溶液中的分散聚合：反应参数对聚合物颗粒形成的影响”Polymer International。

H.Uyama: "Emulsion Copolymeuzation of Styrene with Amphiphilic Poly(2-oxazoline)Macroinoinonmn Bearing Ammcnio Group at the Chain End" Bulletin of the Chemical Society of Japan. 66. 3124-3127 (1993)

H.Uyama：“苯乙烯与链端带有氨基基团的两亲性聚（2-恶唑啉）大分子的乳液共聚”，日本化学会通报。