Porogen on the Rosin-Based Porous Polymer Microspheres and Adsorptions for Phenol Solution
作者：Caili Yu, Xiaolei Wang, Chuanwei Chen, Faai Zhang
關鍵字：Rosin; Suspension Polymerization; Porous polymer microspheres; Porogen; Adsorption
論文來源：期刊
具體來源：Journal of Bio-based Materials and Bio-energy
發表時間：2014年
The porous polymer microspheres with rosin
moiety were prepared by suspension polymerization, using an ester (RH) of rosin
and 2-hydroxyethyl methacrylate, along with styrene (St) as
monomers, divinylbenzene (DVB) as cross-linking agent, gelatin as the
dispersing agent, and azodiisobutyronitrile (AIBN) as initiator. The
effects of types and levels of porogen on the porous microsphere were
investigated and characterized by optical microscope and scanning electron
microscope (SEM). Four methods were used to treat polymer microsphere in order
to produce the pores on the surface of the polymer microsphere which was
confirmed by Fourier transform infrared spectroscopy (FT-IR), SEM and weight
loss. The adsorption of the polymer
microsphere for phenol solution was investigated at different concentration of
phenol and time. Experimental results show that when the fixed mass ratio of RH, St and DVB was
1:1.5:0.4, the amounts of gelatin, AIBN and porogen were 4.0, 1.0, and 50 wt %,
based on the total weight of mixed monomer, respectively, the porous polymer microsphere was prepared
successfully. Alkali-acetone hydrolysis followed by Soxhlet acetone extraction
produced more pores on the surface of the polymer microsphere. When the
concentration of phenol solution was about 20 mg/L, the porous polymer
microspheres made from using toluene and liquid paraffin (1/9, by volume) as
porogen exhibited the best adsorption for phenol solution, which superior to
that of actived carbon. The adsorption of phenol increased with the adsorption
time and phenol concentration.