【摘 要】
：
A poly(tert-butyl methacrylate)(PBMA) macromonomer was synthesized by anionic polymerization with bis(2,6-di-t-butyl phenoxy) methyl aluminum [MeAl(ODBP)2] as t
【机 构】
：
School of Chemical and Material Engineering,Department of Applied Chemistry and Chemical Engineering
论文部分内容阅读
A poly(tert-butyl methacrylate)(PBMA) macromonomer was synthesized by anionic polymerization with bis(2,6-di-t-butyl phenoxy) methyl aluminum [MeAl(ODBP)2] as the initiator and trimethylsilylmethacrylate(TMSMA) as the end capping agent in dry THF. Then, a poly(methacrylic acid)(PMAA) macromonomer was obtained by means of hydrolysis reaction from the PBMA macromonomer in the presence of hydrochloric acid. The structures of the PBMA macromonomer were characterized by using 1H NMR. It was found that the resulted PBMA macromonomer has highly isotactic properties and the PMAA macromonomer has an end vinyl group on per polymer chain. The monodisperse polymeric microspheres, which consisted of polystyrene cores and PMAA branches on their surfaces, were prepared by the dispersion copolymerization of styrene with the PMAA macromonomer in an ethanol/water mixed solvent. It was found that the concentration of the PMAA macromonomer would affect the microsphere formation, the morphology and its size in the copolymerization system.
其他文献
Shortening of the telomeric DNA at the chromosome ends is presumed to limit the lifespan of human cells and elicit a signal for the onset of cellular senescence
In this paper, the Large Eddy Simulation (LES) was used to study the free-surface turbulent channel flow with passive heat transfer. The three-dimensional filte
The use of supercritical-fluid chromatography for determining partial molar volumes of ethyl esters of cis-5,8,11,14,17-eicosapentaenoic acid (EPA) and cis -4,7
A new flavonol oligosaccharide, quercetin-3-O-[b-D-xylopyranosyl-(1?2)- a-L-rhamnopyranosyl-(1?6)]-b-D-glucopyranoside-3￠-O-b-D-glucopyranoside, named aescuflavo
The abstraction reaction of H with (CH3)3SiH was investigated at the high levels of ab initio molecule orbital theory. The geometries were optimized at the MP2
After defining the strong tensor product of strong (sub)chain complexes, it is shown that an analogue of the Kunneth theorem holds in strong homology by proving
The title compound (C5N5H41P2Mo5O30.5) was synthesized under hydrothermal condition and its crystal structure was determined by X-ray diffraction. It belongs to
The initial boundary value problems (IBVP) for the system of compressible adiabatic flow through porous media and the IBVP for its corresponding reduced system
The surface defect distribution in stainless steel irradiated with intense pulsed ion beam(IPIB) of current density above 60A/cm2 and acceleration voltage 300-5
标题化合物C21H24N2O5是由间硝基苯甲醛、达咪酮、乙酰乙酸乙酯、醋酸铵在微波辐射下干反应而得。结构通过单晶X-射线衍射法确定,其晶体属斜方晶系,空间群 Pbcn, a =17.953(3