Gold nanocrystals with controllable size were synthesized through a simple electroreduction method using poly ( N-vinylpyrrolidone)( PVP) of different polymerization degree as both stabilizer and shape-controller for gold nanoclusters. 以不同聚合度的聚乙烯吡咯烷酮(PVP)作为金纳米团簇的稳定剂和形状控制剂,应用电化学还原方法制备尺寸可控的金纳米晶体。
Thickener was prepared by inverse emulsion polymerization of ammonium acrylate using an amphiphilic copolymer as steric stabilizer, Span 80 as emulsifier and methylene bisacrylamide as crosslinker. 以两性共聚物为稳定剂、亚甲基双丙烯酰胺为交联剂,引发丙烯酸铵进行反相乳液聚合,以制备高性能的涂料印花增稠剂。
When BPO was used as initiator in the emulsion polymerization with an ethanol as the medium, the effects of stabilizer concentration and reaction temperature on the 以BPO为引发剂的乙醇分散乳液聚合中,稳定剂用量和反应温度对反应转化率无明显的影响,而提高引发剂和功能单体的用量,反应转化率均有提高,但聚合
In this paper, monodisperse polystyrene microspheres with micron size were prepared by dispersion polymerization. The internal factors ( stabilizer, co-stabilizer, monomer, initiator) were investigated. 采用分散聚合工艺制备微米级单分散聚苯乙烯微球,并对分散聚合反应的内部影响因素(分散稳定剂、助稳定剂、单体、引发剂)进行了研究。
Adopting dispersion polymerization method, monodisperse polystryrene seed beads were prepared. The effects of the concentration of monomer, amount of initiator, amount of stabilizer, reaction temperature and time on particle distribution and diameter were systematically investigated. 采用分散聚合方法,制备了单分散的聚苯乙烯微球,系统地研究了单体浓度、引发剂用量、稳定剂用量、反应温度和时间等各种聚合参数,对聚合产物粒度及其分散性的影响。
Preparation of high water absorbent poly ( sodium acrylate) was carried out by inverse suspension polymerization in cyclohexane with Span-60 as suspension stabilizer, potassium persulfate as initiator and N, N ′ methylene bisacrylamide as crosslinking agent. 以环己烷为连续相,Span-60为悬浮稳定剂,过硫酸钾为引发剂,N,N′亚甲基双丙烯酰胺为交联剂,对反相悬浮聚合制备聚丙烯酸钠高吸水性树脂进行了研究。