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【期刊论文】Preparation and Swelling Properties of Crosslinked Sodium Polyacrylate
柳明珠, MINGZHU LIU, TIANHUA GUO
Journal of Applied Polymer Science, Vol. 82, 1515-1520(2001),-0001,():
-1年11月30日
Crosslinked sodium polyacrylate as a superabsorbent was prepared by inverse suspension polymerization with cyclohexane as the continuous phase and sorbite anhydride monostearic acid ester (span-80) as the dispersant. The crosslinking degree was regulated by NaOH. The distilled water absorbency (WA) of the polymer gel was about 700 times its own weight if the gel was allowed to swell at roomtemperature for 24 h. WA under various conditions, such as varying pH, temperature, reaction time, neutralization, and cyclohexane concentration, was investigated and optimized. Our results revealed that the optimal reaction conditions were 55
superabsorbent, crosslinked sodiumpolyacrylate gel beads, inverse suspension Polymerization
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【期刊论文】Graft Copolymerization of Oleic Acid onto Low-Density Polyethylene in the Molten State
柳明珠, Mingzhu Liu, Zaiman Liu, Shenglong Ding, Sheqing Li, Liji Zhang
Journal of Applied Polymer Science, Vol. 90, 3299-3304(2003),-0001,():
-1年11月30日
A graft copolymer of oleic acid (OA) onto low-density polyethylene (LDPE) was prepared using dicumyl peroxide (DCP) as an initiator in the molten state. The grafting was carried out in a Haake rheometer. The effects of the reaction time and the amount of DCP and the monomer on the percentage of grafting were studied. The rheological behavior and the melt-flow rate of the graft copolymer (LDPE-g-OA) were also investigated. FTIR spectroscopy and a mass spectrum were used to characterize the structure of LDPE-g-OA. The experimental results showed that when the OA amount was 10 wt % and the DCP amount was 0.4 wt % based on the LDPE the percentage of grafting of LDPE-g-OA, prepared by maintaining the temperature at 170
polyethylene, radical polymerization, copolymers, Rheology
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