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研究了氘代氯仿中 N-丁基马来酰亚胺 (NBMI)和苯乙烯 (St)的络合性能 .以十二烷基硫酸钠 (SDS)和正戊醇 (PTL)为复合乳化剂 ,配制了含有 NBMI(M1)和 St(M2 )的 O/ W微乳液 .用过硫酸钾引发该体系进行微乳液共聚合 .固定乳化剂的浓度为 [SDS]=0 .2 1 mol/ L ,[PTL ]=0 .2 8mol/ L ,详细研究了聚合温度、单体配比和引发剂用量对共聚合动力学的影响 .用元素分析法确定共聚物的组成 ,进而求算出两种单体的竞聚率 (r1=0 .0 5 ,r2 =0 .0 8) .热分析结果显示 ,当单体组成比 f1=0 .4～ 0 .7时 ,共聚物的玻璃化转变温度基本恒定 (Tg=42 1 .6 K) .实验结果表明 ,当单体配比在一定范围内 (f1=0 .4～ 0 .7)变化时 ,用微乳液聚合法制备的 N-丁基马来酰亚胺 /苯乙烯共聚物具有交替共聚结构 .
The complexation properties of N-butyl maleimide (NBMI) and styrene (St) in deuterated chloroform were studied. Sodium lauryl sulfate (SDS) and n-pentyl alcohol (PTL) O / W microemulsion containing NBMI (M1) and St (M2) was prepared.The microemulsion copolymerization was initiated with potassium persulfate.The concentration of immobilized emulsifier was [SDS] = 0.21 mol / L, [PTL] = 0.28mol / L, the effects of polymerization temperature, monomer ratio and initiator dosage on the copolymerization kinetics were studied in detail.The composition of copolymer was determined by elemental analysis, and then two monomers (R1 = 0.55, r2 = 0.08) .The results of thermal analysis showed that the glass transition temperature of the copolymer was almost constant when the monomer composition ratio f1 = 0.4 ~ 0.7 (Tg = 42 1 .6 K) .Experimental results show that when the monomer ratio within a certain range (f1 = 0 .4 ~ 0 .7) changes, with the microemulsion polymerization of N- The imide / styrene copolymer has alternating copolymerization structures.