인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
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.
논문 기본 정보
- 자료유형
- 학위논문
- 저자정보
- 지도교수
- 함경식
- 발행연도
- 2017
- 저작권
- 목포대학교 논문은 저작권에 의해 보호받습니다.
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초록· 키워드
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비분해성의 플라스틱 포장재에 폐기물에 따른 환경문제와 고품질 식품에 대한 소비자들의 욕구가 매년 재생이 가능한 생분해성 소재를 사용한 친환경의 식품포장재 개발에 대한 요구가 증대되고 있다. 생고분자는 사용후 폐기했을 때 자연 상태에서 쉽게 미생물에 의해 분해되기 때문에 플라스틱을 대체하기 위해 사용되고 있다. 그런데 생고분자 필름은 플라스틱 필름에 비해 강도가 떨어지고 수분에 대한 저항성이 약해 나노입자를 사용하여 나노복합필름을 제조하는 연구가 이루어졌다. 이러한 나노복합필름은 나노입자들이 갖는 큰 표면적과 aspect ratio에 의해 포장필름의 특성이 크게 증진 될 뿐 아니라 이들 나노입자들이 갖는 항균성, 항산화성, 자외선 차단성 등이 기능특성을 부여하여 식품포장재로 사용할 경우 품질의 유지와 유통기한의 연장이 기대된다. 본 연구에서는 다양한 나노입자와 생고분자를 이용하여 기능성 복합포장필름을 제조하여 식품포장에 대한 응용성에 대해 조사하였다.
목차
- Abstract 1Ⅰ. Introduction 21.1. Background 21.2. Improved mechanical and barrier properties of bio-nanocomposites 51.3. Antimicrobial bio-nanocomposites 121.4. Oxygen scavenging and antioxidant activity of bio-nanocomposites 151.4.1. Oxygen scavenging nanocomposite food packaging 151.4.2. Nanocomposite food packaging with antioxidant activity 161.5. UV-screening nanocomposites food packaging films 191.6. Perspectives 21References 22Ⅱ. Properties of alginate-based films reinforced with cellulose fibers and cellulose nanowhiskers isolated from mulberry pulp 362.1. Introduction 372.2. Materials and Methods 402.2.1. Materials 402.2.2. Preparation and characterization of mulberry pulp cellulose fibers and nanowhiskers 402.2.3. Preparation of alginate based composite films 432.2.4. Characterization of alginate-based composite films 442.4.5. Surface color and transparency 442.2.6. Tensile properties 452.2.7. Water vapor permeability and water contact angle 462.2.8. Statistical analysis 472.3. Results and Discussion 472.3.1. Characterization of cellulose fibers and cellulose nanowhiskers 472.3.1-1. Morphology 472.3.1-2. X-ray diffraction analysis 492.3.1-3. FTIR analysis 512.3.1-4. Thermal stability 532.3.2. Characterization of composite films 552.3.2-1. Microstructure 552.3.2-2. Surface color and transparency 572.3.2-3. FTIR Analysis 612.3.2-4. Thermal stability 632.3.2-5. Mechanical properties 652.3.2-6. Water vapor permeability and water contact angle 682.4. Conclusion 70References 71Ⅲ. Production of functionalized halloysite nanotubes for the preparation of carboxymethyl cellulose-based nanocomposite films 783.1. Introduction 793.2. Materials and methods 813.2.1. Materials 813.2.2. Functionalization of halloysite 823.2.3. Preparation of CMC/HNTs nanocomposite films 833.2.4. Characterization of HNTs and CMC/HNTs nanocomposites films 843.2.5. Light transmittance of film 863.2.6. Mechanical properties 863.2.7. Water vapor permeability (WVP) 873.2.8. Thermal stability 883.2.9. Antimicrobial activity 883.2.10. Statistical analysis 893.3. Results and discussion 903.3.1. Characterization of HNTs 903.3.1-1. Morphology 903.3.1-2. Zeta potential (ZP) and concentration of metal ions 913.3.1-3. FTIR of HNTs 933.3.1-4. XRD analysis of HNTs 943.3.2. Characterization of CMC/HNTs films 963.3.2-1. The microstructures 963.3.2-2. FT-IR analysis 983.3.2-3. Light transmittance 993.3.3. Mechanical properties 1013.3.4. Water vapor permeability 1033.3.5. Thermal stability 1053.3.6. Antimicrobial activity 1063.4. Conclusion 110References 110Ⅳ. Preparation and application of agar/alginate/collagen ternary blend functional food packaging films 1174.1. Introduction 1184.2. Materials and methods 1224.2.1. Materials 1224.2.2. Preparation of films 1234.2.3. Surface color and transparency of films 1244.2.4. Surface morphology and FT-IR Analysis 1254.2.5. Mechanical properties 1254.2.6. Water vapor permeability (WVP) and water contact angle (CA) 1264.2.7. Swelling ratio and water solubility 1274.2.8. Thermal stability 1284.2.9. Antibacterial activity 1284.2.10. Packaging test 1294.2.11. Statistical analysis 1304.3. Results and discussion 1304.3.1. Apparent color and optical properties of film 1304.3.2. Microstructure and FT-IR analysis 1344.3.3. Mechanical properties 1374.3.4. Water vapor permeability (WVP) and water contact angle (CA) 1394.3.5. Swelling ratio (SR) and water solubility (WS) 1404.3.6. Thermal stability 1424.3.7. Antimicrobial activity 1454.3.8. Packaging test 1474.4. Conclusion 152References 153Ⅴ. Large-scale production of ZnO nanoparticles and their use for the preparation of PLA-based nanocomposite films 1595.1. Introduction 1605.2. Material and methods 1625.2.1. Materials 1625.2.2. Preparation of ZnO nanoparticles 1635.2.3. Preparation of PLA/ZnO nanocomposite films 1645.2.4. Characterization of PLA/ZnO NPs nanocomposite films 1655.2.4-1. Morphology and optical properties 1655.2.4-2. FTIR and XRD 1655.2.4-3. Differential scanning calorimetry 1665.2.4-4. Thermal stability 1675.2.5. Tensile properties of the films 1685.2.6. Water vapor permeability 1685.2.7. Antimicrobial activity 1695.2.8. Packaging test 1705.2.9. Statistical analysis 1715.3. Results and discussion 1725.3.1. Morphology 1725.3.2. Light transmittance 1745.3.3. FTIR and XRD analysis 1765.3.4. DSC analysis 1795.3.5. Thermal stability 1815.3.6. Mechanical properties 1835.3.7. Water vapor permeability 1865.3.8. Antimicrobial activity 1875.3.9. Packaging test 1905.4. Conclusion 192References 192Ⅵ. Characterization of melanin nanoparticles from squid ink and its effect on properties of gelatin-based nanocomposite films 2006.1. Introduction 2016.2. Materials and methods 2046.2.1. Materials 2046.2.2. Isolation of melanin nanoparticles 2046.2.3. Preparation of gelatin/melanin nanocomposite films 2056.2.4. Characterizations 2056.2.5. Surface color and transparency of gelatin based nanocomposite films 2076.2.6. Mechanical properties of gelatin based nanocomposite films 2086.2.7. Water vapor permeability (WVP) of gelatin based nanocomposite films 2086.2.8. DPPH radical scavenging abilities of gelatin/ MNPs nanocomposite films 2096.2.9. Statistical analysis 2106.3. Results and discussion 2106.3.1. Morphology of melanin nanoparticles and nanocomposite film 2106.3.2. The IR spectrum of melanin nanoparticles and nanocomposite film 2146.3.3. Thermostability of MNPs and nanocomposite films 2176.3.4. Surface color and transmittance nanocomposite films 2196.3.5. Mechanical properties 2236.3.6. Water vapor permeability of nanocomposite films 2246.3.7. Antioxidant activity of gelatin/MNPs nanocomposite films using DPPH assay 2276.4. Conclusion 228References 228Ⅶ. Conclusion 235