고흡수성 셀룰로오스공중합체 수지의 제조와 물성에 관한 연구

다국어 초록 (Multilingual Abstract)

The superabsorbent was made by hydrolysis of α-cellulose-co-polyacryloniteile(PAN) whose total polyacrylonitrile chain content is about 46% and its absorbency is about 943g-water/g-sample.
Increase of initial absorbencies follow the order α-cellulose > Filter paper > sodium carboxmethyl cellulose.
To determine of conditions for the grafting copolymerization, used the different temperatue, the concentration of PAN, and solvent(methanol, ethanol, n-propanol). The effect of hydrolysis conditions was studied. Optimum hydrolysis condition was detemined from absorbency.
To study of influence of medium on grafting of Acrylonitrile onto partially α-cellulose, the experiment was cattied out in water/solvent mixtures. the solvent used methanol, ethanol, propanol. Grafting was carried out in a different of solvent ratio, using a temperature of 45℃ and the reaction time of six hours. in the many figure and table, it is clear that regardless of water/solvent system employed, a substantial amount of grafting is obtained, a regular decrease also accurse with increase in the solvent ratio in the water/solvent mixture. decrease in the graft yield, which results from an increase in the ratio of solvent in the water/solvent mixture, could be interpretied in terms of the adverse effect of the solvent on the swelling properties of α-cellulose in water. the data suggest that the relative grafting properties follow the order: propanol>ethanol>methanol.
At the same condition, graft copolymers which have 10~46% PAN were synthesized. but PAN, not grafted, included in samples was not seperated by using solvents, and it was increased yield of PAN. when PAN grafted different based materials. The yield of PAN(%) follows the order-sodium carboxymethyl cellulose(CMC) > Filter paper > α-cellulose.

목차 (Table of Contents)

• 목차
• Ⅰ. 서론 = 1
• Ⅱ. 이론 = 6
• 1. 이온 그라프트중합 = 6
• 2. 열분해 반응속도해석 = 8
• Ⅲ. 실험 = 10
• 1. 시료 = 10
• 2. 실험장치 및 방법 = 10
• 가. 실험장치 = 10
• (1) 공중합 장치 = 10
• (2) 가수분해 장치 = 10
• 나. 실험방법 = 11
• (1) 그라프트 공중합 = 11
• (2) 가수분해 = 11
• 다. 물성 분석 = 14
• (1) 중합체의 구조확인 = 14
• (2) 주사전자현미경 분석 = 14
• (3) 여과법에 의한 흡수도 측정 = 14
• (4) 열중량분석 = 14
• Ⅳ. 결과 및 고찰 = 17
• 1. 반응조건의 영향 = 17
• 가. 개시제 = 17
• 나. 반응온도 = 18
• 다. 반응시간 = 18
• 라. 단량체 농도의 영향 = 19
• 2. 혼합용매의 영향 = 27
• 3. 그라프트 공중합의 확인 = 31
• 4. 가수분해 = 35
• 5. 열적거동 = 40
• Ⅴ. 결론 = 44
• References = 45
• ABSTRACT = 48