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化学学报
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化学学报 ›› 1954, Vol. 20 ›› Issue (2): 102-107. 上一篇    下一篇

论文

直接测定青橡胶草生胶中橡胶烃含量

李增贵   

  1. 兰州工业试验所
  • 投稿日期:1953-12-31 发布日期:2013-06-04

DIRECT DETERMINATION OF RUBBER HYDROCARBON IN KOK-SAGHYZ RUBBER

LI TSENG-KUEI   

  1. Institute of Industrial Research, Lanchow
  • Received:1953-12-31 Published:2013-06-04

PDF

660

被引次数

11

本文报告了用重量溴化法测定青橡胶草生胶中橡胶烃的各种适宜条件,并求得了由溴化橡胶换算为橡胶烃的换算因数为0.298。三氯甲烷可用来防止溴化橡胶的结膜,同时并可防止溴与橡胶的置换反应。每10毫升橡胶液应加溴化溶液2毫升。溴化反应可在常温进行。三氯醋酸可使橡胶容易溶解,对分析结果无显著影响,用或不用均可。溴化法无论在分析时间上和精确度上,均较直接抽提法和间接测定法为优。

In this paper a modified method is recommended for the determination of rubber hydrocarbon present in kok-saghyz rubber by means of bromination. This method is rapid and accurate. A conversion factor of 0.298 is obtained for converting rubber bromide content to rubber hydrocarbon content for kok-saghyz rubber. The conversion factor agrees well with the theoretical value.