지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
이용수5
2018
Table of Contents1. INTRODUCTION 11.1. Chitin 11.2. Chitin nanocrystals 21.3. Methylcellulose 51.4. Nanocomposite hydrogel 62. EXPERIMENTAL 72.1. Material 72.2. Isolation of α-CNW from shrimp shells 72.2.1. Purification of α-chitin 72.2.2. Acid hydrolysis of α-chitin 82.3. Extraction of β-CNW from cuttlefish bone 82.3.1. Deproteinization 82.3.2. Demineralization 82.3.3. Acid hydrolysis of β-chitin 92.4. Preparation of deacetylated β-CNCs 132.5. Preparation of the nanocomposite hydrogels 132.5.1. Preparation of the MC nanocomposite hydrogels reinforced with α-CNWs and β-CNCs 132.5.2. Preparation of the MC composite hydrogels reinforced with Dβ-CNCs 142.6. Analyses 152.6.1. Microscopy 152.6.2. Degree of deacetylation 152.6.3. Attenuated total reflectance infrared spectroscopy (ATR-IR) 152.6.4. X-ray diffraction 162.6.5. Thermal analysis 162.6.6. Rheological characterization 162.6.7. Tensile test 172.6.8. Stability of Dβ-CNCs suspension 173. RESULTS & DISCUSSION 183.1. Identification of α-CNWs from shrimp sells 183.1.1. Purification of α-CNWs 183.1.2. Morphology of α-CNWs 183.2. Identification of β-CNCs from cuttlefish bone 193.2.1. Purification of β-chitin 193.2.2. Structures of β-chitin 213.3. Isolation of chitin nanocrystals 253.4. Deacetylation of β-CNCs 293.4.1. Crystalline structure of Dβ-CNCs 293.4.2. Thermal behavior of Dβ-CNCs 303.5. Mechanical properties of the MC nanocomposite hydrogels reinforced with α-CNWs and β-CNCs 383.5.1. Gelation behavior 383.5.2. Rheological properties 393.5.3. Compressive strength 433.5.4. Reinforcing effect of chitin nanocrystals 443.6. Mechanical properties of the MC nanocomposite hydrogels reinforced with Dβ-CNCs 503.6.1. Effect of the electrostatic repulsion of Dβ-CNCs on the dispersion 503.6.2. Gelation behavior 513.6.3. Compressive strength 524. CONCLUSION 58REFERENCE 60
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