| 학회 |
한국고분자학회 |
| 학술대회 |
2018년 가을 (10/10 ~ 10/12, 경주컨벤션센터) |
| 권호 |
43권 2호 |
| 발표분야 |
고분자합성 |
| 제목 |
Synthesis of High Molecular Weight Polybenzimidazole Using a Highly Pure Monomer Under a Mild Condition |
| 초록 |
An isophthalaldehyde bisulfite adduct (IBA) was synthesized using a reaction between sodium sulfite and isophthalaldehyde. Isophthalaldehyde monosulfite adduct (IMA) was inevitably synthesized during the reaction. Because IBA and IMA have similar solubility in water, it is difficult to separate them through a recrystallization process. In order to obtain pure IBA, an excess of sodium sulfite was used. Highly pure IBA was subsequently obtained without the need for recrystallization. The IBA was then used as the starting monomer for the synthesis of poly[2,2′-(m-phenylene)-5,5′-bisbenzimidazole] (PBI). Previous isolation methods for IBA hindered the synthesis of high molecular weight PBI. This new synthetic procedure produces high-purity IBA, which can be used to synthesize high molecular weight PBI. |
| 저자 |
김은기1, 이종찬1, 김형준2, 이소영2, Dirk Henkensmeier2
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| 소속 |
1서울대, 2KIST |
| 키워드 |
engineering plastics; isophthalaldehyde bisulfite adduct; polybenzimidazole; solvent polymerization
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| E-Mail |
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