The radical copolymerization of styrene and cinnamic acid
The radical copolymerization of styrene and cinnamic acid
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苯乙烯与肉桂酸的自由基共聚
DOI：
10.1002/pol.1962.1206217450
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发表时间：
1962
影响因子：
3.4
通讯作者：
C. Barson
中科院分区：
文献类型：
--
作者：
C. Barson
苯乙烯与肉桂酸在苯中于60 ℃以不同浓度共聚，用偶氮异丁腈作为引发剂;肉桂酸在01位用碳-14标记。沿着共聚物链沿着存在羧酸基团将赋予材料不同于纯聚苯乙烯的溶液性质。在60 ° F 0.03 ″下进行聚合，并使其进行到约2%转化率。将共聚物用乙醇从苯溶液中沉淀三次，以除去可检测量的标记肉桂酸。其活性通过气体计数器中的二氧化碳测定来确定。通过紧凑形式的悬浮水平粘度计对四种共聚物样品在苯中的溶液进行粘度测量。2措施-
Styrene has been copolymerized with cinnamic acid in varying concentrations in benzene at 60" C., with azoisobutyronitrile as initiator; the cinnamic acid was labeled with carbon-14 in the 01 position. The presence of carboxylic acid groups along the copolymer chain will confer solution properties on the material different from those of pure polystyrene.The polymerizations were followed dilatometrically at 60 f 0.03" and allowed to proceed to about 2% conversion. The copolymer was precipitated three times with ethanol from a solution in benzene, to remove detectable quantities of the labeled cinnamic acid. Its activity was determined by assay as carbon dioxide in a gas counter.'Viscosity measurements were made on solutions of four samples of the copolymer in benzene by means of a suspended-level viscometer of the compact form. 2 Measure-