Molecular weight distribution curve of 1 , 1 ' - diaformacylferrocene - o - phenylenediamine polycondensate has triplet and polydispersity is a little large . it should be pointed out that the fe2p3 / 2 peak appears basically near fe2 + characterizing 708ev in xps of the two polycondensates , this means that the ferrocene group is rather stable in the polycondensates 其中， 1 ， l ’一几甲酞二茂铁邻苯二胺缩聚物的分子量分布曲线呈现三重峰，表明在高转化率时发生大分子链转移后生成带支链的高分子，其多分散性也较大。
In microcosmic side , the different molecular weight of pea esterify time was reduced along with the augmentation of molecular weight were approved . the mixture of pea series esterify production , aa , mma were processed tercopolymer by concatenation drop adding fashion during the nitrogen gas protect 在氮气保护条件下，利用获得的pea系列酯化物，与丙烯酸、甲基丙烯酸甲酯的混合物通过连续滴加方式进行三元共聚，从链转移剂、 pea ： aa ： mma之间的摩尔百分比和共聚时间等方面进行了系统的研究。
The article analyze the concrete drying shrinkage mechanism , find the major factors of affecting the drying shrinkage , analyze the lack of shrinkage reducing agent , who be of low molecular weight and line chain , design a new shrinkage reducing agent ? ? shrinkage reducing agent of poly - acrylate . the shrinkage reducing agent of poly - acrylate is mainly composed of crylic acid 、 cinnamene 、 poly - glycol 、 solicitating agent 、 chain transferring agent and activator , which come by these processes of polymerization 、 esterifing and neutralization to form a pectinate polymer , which have a high molecular weight and many poly - oxidative alkenes 论文分析了混凝土干燥收缩的机理,确定了影响干燥收缩的关键因素,分析已有低分子量的、直链型减缩剂的不足,设计了一种新型的减缩剂? ?聚丙烯酸盐类减缩剂,其主要由丙烯酸、苯乙烯、聚乙二醇、引发剂、链转移剂、催化剂等经过聚合、酯化和中和反应,生成一种高分子量的、含聚氧化烯链的聚合物。
