Abstract
For the separation of boron isotopes, aminated polystyrenedivinylbenzene ion-exchange resins were prepared by chloromethylation of styrene-divinylbenzene copolymer (DVB 10%), followed by the reaction of methylamine. During the preparation of styrene-divinylbenzene copolymer, heptane for the porous resin and toluene for the non-porous resin were used as diluent, and the pore volume of the resins was determined by mercury porosimeter. In both water and aqueous alcohol solutions, the distribution coefficient of boric acid was decreased in accordance with increasing the alcohol concentration and the number of carbon atoms in the alcohol molecules. As a result of separatioin of boron isotope with nonporous and porous resin in water solvent, the separation efficiency of porous resin is better than that of the nonporous, and the result in both water and 50% methyl alcohol solvent relevant to nonporous resin indicated that the latter was better than the former.
스티렌과 디비닐벤젠을 이용한 공중합체의 합성에 희석제로서 헵탄과 톨루엔을 사용하여 다공성 및 미세구조에 미치는 영향을 조사하였다. 스티렌디비닐벤젠 공중합체를 아미노화하여 음이온 교환수지를 합성하였으며 이 수지의 이온교환용량과 알코올 수용액에서 붕산에 대한 분포계수 값을 구하였고 이온교환 크로마토그래피와 질량분석기를 이용하여 붕소의 동위원소 분리효과를 연구하였다.