摘要
二乙烯基苯(DVB)用于树脂的合成时,并非所有的乙烯基都参与交联反应,共聚物中总存在一些悬挂双键。用红外及拉曼光谱对聚合过程中DVB悬挂双键含量变化的动力学研究已有报道。作者用Nicolet 170 SX:付里叶变换红外光谱仪(FT-IR),以积分强度法测定及研究了大孔型丙烯腈-苯乙烯-二乙烯基苯共聚物(大孔AS树脂)
The macroreticular acrylonitrile-styrene-divinylbenzene copolymers (MR-PSA resins) have-been synthesized successfully by the suspension polymerization, using the linear polystyrene-(PS), linear pre-polystyrene (PPS) and mixture of PPS-cyclohexane as pore-creating agents. The morphological structure and porous structure of the MR-PSA resins have been studied by using scanning electron microscopy (SEM), BET method and density-bottle method. From the micrography and porous-parameters of the MR-PSA resins, we found: When the crosslink-ing degree is same, the morphological structure of the MR-PSA resins change from 'gel-flake' into 'gel-granule' with the increasing of the content of polymeric pore-creating agents applied, and their porous structures are improved in the meantime. The morphological structure and porous structure of the MR-PSA resins are also dependent on the sort of polymeric pore-creating system, PPS-cyclohexane is the best in the three sorts of polymeric pore-creating system used. The copolymeric compositions and other properties of the MR-PSA resins have been studied by the FT-IR, TG-DTG and Kjeldahod's method.
出处
《高分子学报》
SCIE
CAS
CSCD
北大核心
1990年第5期618-622,共5页
Acta Polymerica Sinica
基金
甘肃省中青年科技基金
关键词
大孔树脂
丙烯腈共聚物
FT-IR
Macroreticular resin, Chelate resin, Acrylonitrile-resin, Acrylonitrile-co-polymer, Polymeric pore-creating agent
