| Project/Area Number |
14550838
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
高分子合成
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| Research Institution | Kogakuin University |
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Principal Investigator |
HASHIMOTO Kazuhiko Kogakuin Univ., Faculty of Eng., Professor, 工学部, 教授 (20023484)
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| Co-Investigator(Kenkyū-buntansha) |
KURAMOCHI Tomohiro Kogakuin Univ., Faculty of Eng., Professor, 工学部, 教授 (40100292)
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| Project Period (FY) |
2002 – 2003
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| Project Status |
Completed (Fiscal Year 2003)
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| Budget Amount *help |
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2003: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 2002: ¥2,600,000 (Direct Cost: ¥2,600,000)
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| Keywords | Biodegradable / Polyamide / Nylon4 / Lactam / 2-Pyrrolidone / Microorganism / Compost / Activated Sludge / α-ピロリドン |
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| Research Abstract |
The strict procedures for the purification and polymerization of 2-pyrrolidone in high vacuum line are necessary for the preparation of high molecular weight nylon4, which disturb its preparation on a large scale at a time. In order to scale up the polymerization of 2-pyrrolidone, the procedures were performed in an atmosphere of prepurified nitrogen in the present work.
More than 80 grams of low molecular weight nylon4 was obtained at a time on the anionic polymerization of 2-pyrrolidone which was purified by the distillation under reduced pressure and the subsequent drying on the activated molecular sieves, but not through the recrystallization of its hydrate before use. On the other hand, the purification of 2-pyrrolidone through the recrystallization of its hydrate subsequently by the distillation and drying on the molecular sieves was essential for the preparation of the high molecular weight nylon4. Thus more than 100g of the high molecular weight nylon4 was obtained on one polymerization procedure under dry nitrogen atmosphere but not in a high vacuum line.
The thermal stability of nylon4 was found to increase through the chemical modification of its acyllactam-type chain end.
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