표제지
목차
국문요약 13
Ⅰ. 서론 16
Ⅱ. 실험 24
1. 시료 및 시약 24
2. 실험 방법 24
2.1. BC 배양 24
2.2. BC 전처리 25
2.3. BC의 인산화 26
2.4. 인산화한 BC의 특성 평가 29
2.5. 인산화한 BC의 물성 평가 31
Ⅲ. 실험 결과 및 고찰 34
1. BC의 인산화 조건 설정 34
1.1. 가소제에 따른 유연성 및 열적 특성 34
1.2. 자일리톨 농도에 따른 유연성 및 열적 특성 40
1.3. 피트산 농도에 따른 열적 특성 44
1.4. 반응 온도에 따른 열적 특성 46
1.5. 반응 시간에 따른 열적 특성 48
2. 인산화한 BC의 특성 평가 50
2.1. 화학적 특성(FT-IR) 50
2.2. 결정학적 특성(XRD) 53
2.3. 표면 형태(FE-SEM, EDX) 56
3. 인산화한 BC의 물성 평가 61
3.1. 인장 강도 63
3.2. 유연성 65
3.3. 방추도 67
3.4. 치수 안정성 69
3.5. 습윤 내구성 71
Ⅳ. 결론 73
Ⅴ. 참고문헌 75
ABSTRACT 86
Table 1. Characteristic peaks of original BC, PA-ONLY and PBC(Phosphorylation condition: PA-ONLY 10%(o.w.f.) phytic acid,... 52
Table 2. Crystallinity degree of original BC, PA-ONLY and PBC(Phosphorylation condition: PA-ONLY 10%(o.w.f.) phytic acid,... 55
Table 3. Weight % of elements of original BC, PA-ONLY and PBC(Phosphorylation condition: PA-ONLY 10%(o.w.f.) phytic acid,... 60
Table 4. Fabric characterizations of original BC, cowhide leather,PA-ONLY and PBC(Phosphorylation condition: PA-ONLY... 62
Figure 1. Structural formula of phytic acid 20
Figure 2. Structural formula of urea 22
Figure 3. Structural formula of xylitol 22
Figure 4. Schematic summary of the production method of phosphorylated BC 27
Figure 5. Schematic illustration of the production method of phosphorylated BC 28
Figure 6. Effect of plasticizer on softness of phosphorylated BC(Phosphorylation condition: PA-ONLY 10%(o.w.f.) phytic acid,... 36
Figure 7. Effect of plasticizer on TGA of phosphorylated BC(Phosphorylation condition: PA-ONLY 10%(o.w.f.) phytic acid,... 39
Figure 8. Effect of concentration of xylitol on softness of phosphorylated BC(Phosphorylation condition: 10%(o.w.f.) phytic... 41
Figure 9. Effect of concentration of xylitol on TGA of phosphorylated BC(Phosphorylation condition: 10%(o.w.f.) phytic... 43
Figure 10. Effect of concentration of phytic acid on TGA of phosphorylated BC(Phosphorylation condition: 1:10 molar ratio of... 45
Figure 11. Effect of reaction temperature on TGA of phosphorylated BC(Phosphorylation condition: 10%(o.w.f.) phytic... 47
Figure 12. Effect of reaction time on TGA of phosphorylated BC(Phosphorylation condition: 10%(o.w.f.) phytic acid, 1:10 molar... 49
Figure 13. FT-IR spectra of original BC, PA-ONLY and PBC(Phosphorylation condition: PA-ONLY 10%(o.w.f.) phytic acid,... 51
Figure 14. XRD spectra of original BC, PA-ONLY and PBC(Phosphorylation condition: PA-ONLY 10%(o.w.f.) phytic acid,... 54
Figure 15. SEM images of a original BC; b PA-ONLY; c PBC; d char residue of original BC; echar residue of PA-ONLY; f char residue of PBC at 2,000 and 20,000× magnification,... 57
Figure 16. EDX spectra of a original BC; b PA-ONLY; c PBC(Phosphorylation condition: PA-ONLY 10%(o.w.f.) phytic acid,... 59
Figure 17. Tensile strength of original BC, cowhide leather, PA-ONLY and PBC (Phosphorylation condition: PA-ONLY 10%(o.w.f.)... 64
Figure 18. Softness of original BC, cowhide leather, PA-ONLY and PBC (Phosphorylation condition: PA-ONLY 10%(o.w.f.) phytic acid,... 66
Figure 19. Crease recovery of original BC, cowhide leather, PA-ONLY and PBC (Phosphorylation condition: PA-ONLY 10%(o.w.f.)... 68
Figure 20. Dimensional stability of original BC, PA-ONLY and PBC(Phosphorylation condition: PA-ONLY 10%(o.w.f.) phytic acid,... 70
Figure 21. Weight % at 600℃ of PA-ONLY and PBC after different washing steps(Phosphorylation condition: PA-ONLY... 72