丙烯酸乙酯──醋酸乙烯酯与玉米淀粉的乳液共接枝聚合反应

EMULSION GRAFT COPOLYMERIZATION OFETHYL ACRYLATE--VINYL ACETATE AND CORN STARCH

本文以过硫酸钾与硫代硫酸钠组成ＫＰＳ—Ｎａ２Ｓ２Ｏ３氧化还原ｚ引发体系，首次研究了丙烯酸乙酯（ＥＡ）一醋酸乙烯酯（ＶＡＣ）与玉米淀粉的乳液共接枝反应规律，ＩＲ、ＳＥＭ表征了产物的结构．当［ＫＰＳ］＝６×１０－３Ｍ，［ＶＡＣ］＝１．５×１０－１Ｍ，［ＥＡ］＝２×１０－２Ｍ，Ｓ：Ｌ＝４：１００，ＣＥ＝０．６ｇ／１００ｍｌ，６０℃，反应６ｈ时，可以得到最佳的Ｇ％及Ｅ％值，文献中未见有与本文相同的报道．

Emulsion graft copolymerization of ethyl acrylate(EA)--vinyl acetate and corn starch was carried out using KPS--Na2S2O3 as initiation system. The reaction products were characterizated by IR and SEM.The maximum G% and E% were obtained at [KPS] of 6. 0 × 10-3 mol/L, [VAC] of 1.5×10-1 mol/L, [EA] of 2. 0×10-2mol/L and a solid liquid ratio of 4: 100 at 60℃ for 6h.