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박막형 다공성입자구조 이온교환수지의 제조 및 특성
Preparation and Characteristics of the Macroreticular Ion Exchange Membrane
HWAHAK KONGHAK, April 1986, 24(2), 113-119(7), NONE
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Abstract
괴상중합법에 의하여 다공성입자구조를 갖는 두께 0.2 mm의 poly(styrene-divinyl benzene) 막들을 합성하였다. 막의 성분 중 가교제와 기공형성제의 함량이 수지의 표면적과 팽윤능력에 미치는 영향을 조사하였다. 기공형성제의 함량이 증가하면 막의 표면적과 팽윤능력이 모두 증가하였으나, 가교제의 함량이 증가하면 표면적은 증가하되 팽윤능력은 감소하였다. 합성된 막들을 진한 황산과 나트로벤젠을 이용하여 황산화시켰으며 그들의 이온교환 용량을 적정법에 의하여 구하였다. 황산화된 막들의 이온교환 용량은 가교제의 함량이 증가하면 감소하고 기공형성제의 함량이 증가하면 따라서 증가하였다.
Macroreticular poly(styrene-divinylbenzene) membranes of 0.2 mm thick have been synthesized by the bulk polymerization. The effects of the contents of the crosslinking agent and the diluent on the surface area and the swelling ability of the membranes were investigated. The swelling ability and the surface area increased with the amount of diluent. With the increase in the amount of crosslinking agent, the surface area increased while the swelling ability decreased. The membranes were sulfonated with concentrated sulfuric acid in the presence of nitrobenzene and the ion-exchange capacities of the membranes were measured by titration. The ion-exchange capacities increased with the increase in the diluent content but decreased with the increase in the crosslinking agent.