【摘 要】
：
Photoinitiated inverse emulsion polymerization of sodium acrylate (AANa) in kerosene was carried out at room or lower temperature, using 2,2-dimethoxy-2-phenyla
【机 构】
：
Key Laboratory of Science and Technology of Controllable Chemical Reactions
【基金项目】
：
the Scientific Research Foundation for Youth
论文部分内容阅读
Photoinitiated inverse emulsion polymerization of sodium acrylate (AANa) in kerosene was carried out at room or lower temperature, using 2,2-dimethoxy-2-phenylacetophenone (DMPA) as the initiator. Kinetic investigations indicated that the polymerization could be completed in about 30 min and produce polymer with high molecular weight (106～107). It was found that monomer droplets are the main sites for the polymerization (nucleation). With the increase of DMPA concentration, polymerization rate (Rp) reaches a maximum value while molecular weight of the produced polymer has an adverse result, but the dependence of Rp on incident light intensity is similar. Influences of other parameters such as monomer concentration, emulsifier content and reaction temperature, etc. were also studied. At lower pH values of water phase, Rp depends strongly on the pH due to the electrostatic interaction between the ionized radicals and the monomer. At higher pH, Rp shows a slight dependence on pH.
其他文献
Bayes decision rule of variance components for one-way random effects model is derived and empirical Bayes (EB) decision rules are constructed by kernel estimat
This paper describes a built-in self-test (BIST) hardware overhead minimization technique used during a BIST synthesis process. The technique inserts a minimal
With the aid of a global barotropic model, the role of the interaction of the synoptic-scale disturbance and the planetary flow in block onset is examined by a
As-cast and corrosive microstructures of AZ91D alloy containing various Ce contents were observed by optical microscope (OM). The phase compositions of the allo
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
The density functional theory and the cluster model methods have been employed to investigate the interactions between ethanethiol and HZSM-5 zeolites. Molecula
Copper oxalate nanorods were successfully prepared by means of a simple one-step solid-state reaction method with the assistance of a suitable surfactant, polye
More and more linear alkylbenzene sulfonate (LAS) has contaminated the water and soil via pollution discharge,making it important to identify the ecological beh
ZSM-5 zeolitic coatings on aluminum have been prepared successfully by in-situ hydrothermal synthesis method and ZSM-5/A1 monolith was formed. The effects of pH
The authors prove the Hardy-Littlewood-Sobolev theorems for generalized fractional integrals L-α/2 for 0 ＜α＜ n/m, where L is a complex elliptic operator of arbi