摘要
(Silver-poly(4-vinylpyridine))(Ag-P4VP) hybrid microgels were synthesized by γ-irradiation and surfactant-free emulsion polymerization in a single step.The effects of dose rate and the concentrations of isopropanol,silver ion,N,N′-methylenebisacrylamide(Bis) and 4-vinylpyridine(4-VP) on the hybrid microgels were studied in detail via transmission electron microscopy(TEM),powder X-ray diffraction(XRD) or dynamic light scattering(DLS).The results indicated that the size of Ag nanoparticles in the hybrid microgels increased with the increase of Ag^+ or Bis concentration and with the decrease of dose rate or isopropanol concentration.When the dose rate was decreased,the phase state of Ag nanoparticles was gradually transformed from amorphous state to cubic crystalline state.Although the variety of the P4VP microgels’ size was more complex,it could also be easily adjusted by the above-mentioned conditions.
Silver-poly（4-vinylpyridine） （Ag-P4VP） hybrid microgels were synthesized by 7-irradiation and surfaetant-free emulsion polymerization in a single step. The effects of dose rate and the concentrations of isopropanol,silver ion, N, N′-methyienebisaerylamide （Bis） and 4-vinylpyridine （4-VP） on the hybrid mierogels were studied in detail via transmission electron microscopy （ TEM ）, powder X-ray diffraction （XRD） or dynamie light scattering （DIS）. The results indicated that the size of Ag nanopartieles in the hybrid mierogels increased with the increase of Ag^＋ or Bis concentration and with the decrease of dose rate or isopropanol concentration. When the dose rate was decreased, the phase state of Ag nanopartieles was gradually transformed from amorphous state to cubic crystalline state. Although the variety of the P4VP mierogels＇ size was more complex, it could also be easily adjusted by the above-mentioned conditions.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
2006年第5期722-726,共5页
Acta Polymerica Sinica
基金
国家自然科学基金(基金号9020602029901001)
北京大学大型仪器开放测试基金资助项目
关键词
杂化微凝胶
无皂乳液聚合
Γ辐照
4-乙烯基吡啶
Hybrid mierogel（s）, Surfaetant-free emulsion polymerization, 7-Irradiation, 4-Vinylpyridine
