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논문 기본 정보

자료유형
학위논문
저자정보

김수진 (부산대학교, 부산대학교 대학원)

지도교수
정일두
발행연도
2023
저작권
부산대학교 논문은 저작권에 의해 보호받습니다.

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이 논문의 연구 히스토리 (5)

초록· 키워드

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Poly aryl ether ketones (PAEKs) has now gradually become the major polymer material in the fields of biomedical polymer, due to its good excellent thermal, mechanical properties and biocompatibility. Among PAEKs, PEKK has some advantages such as excellent mechanical properties, remarkable thermal stability, versatile chemistry due to two ketone bonds compared to other PAEKs. We focused on poly(ether ketone ketone) based oligomer to improve the mechanical properties of dental resin. In this study, EMA-terminated poly(ether ketone ketone) oligomer (EMAEKK) was synthesized using carboxylic acid-terminated poly(ether ketone ketone) oligomer (CAEKK) and 2-hydroxyethyl methacrylate (HEMA) and characterized by FT-IR, 1H-NMR, GPC, XRD and TGA. Modified colloidal silica nanoparticles with 3-(trimethoxysilyl)propyl methacrylate (MPS) were also synthesized and characterized with FT-IR, DLS, TEM, and FE-SEM. Tailored dental resins with various composition of EMAEKK, modified silica nanoparticles (MPS-silica), and ethoxylated bis-GMA (EBPDMA) were fabricated by the photopolymerizations of DLP 3D printing technique and were evaluated their mechanical properties such as compressive strength, flexural strength, hardness and polymerization shrinkage.

목차

ABSTRACT 1
CHAPTER 1. INTRODUCTION 2
CHAPTER 2. THEORETICAL BACKGROUND 4
2-1. Dental materials based on polymers 4
2-1-1. Common monomers for dental composites 4
2-1-2. Photoiniatiors for photo-curing system 6
2-1-3. Composite resin 10
2-1-4. Advantages and challenges of dental composites 12
2-2. Poly(ether ketone ketone) 13
2-2-1. Super engineering plastics 13
2-2-2. Poly(ether ketone ketone) (PEKK) 16
2-2-3. Polycondensation via Friedel-Craft acylation 18
2-3. End-group functionalization of PEKK 20
2-3-1. Telechelic polymer 20
2-3-2. Steglich esterification 21
2-4. Modified silica nanoparticles 23
2-4-1. Silica nanoparticles for particle reinforcement 23
2-4-2. The history of sol-gel process 23
2-4-3. Sol-gel process for silica nanoparticles 24
2-4-4. Silane coupling agent 25
2-5. 3D Printing 27
2-5-1. Brief explanation of 3D printing 27
2-5-2. Benefits and challenges of 3D printing in medical application 27
CHAPTER 3. EXPERIMENTAL 28
3-1. Materials 28
3-2. Experimental 30
3-2-1. Synthesis of CAEKK 30
3-2-2. Synthesis of EMAEKK 31
3-2-3. Synthesis of surface modified silica nanoparticles 32
3-2-4. Preparation of dental resin containing EMAEKK and silica nanoparticles 33
3-2-5. Process of preparation of specimens by 3D printing 33
3-3. Measurement 34
3-3-1. Spectroscopic measurement 34
3-3-2. Chromatographic measurement 34
3-3-3. Thermal analysis 34
3-3-4. Measurement of modified silica nanoparticles 35
3-3-5. Measurement of mechanical strength 35
3-3-6. Measurement of polymerization shrinkage 35
3-3-7. Fracture surface analysis of hybrid resin 36
CHAPTER 4. RESULTS AND DISCUSSION 37
4-1. Characterization of CAEKK 37
4-2. Characterization of EMAEKK 43
4-3. Characterization of modified silica nanoparticles 45
4-4. Characterization of dental resins containing EMAEKK 52
4-4-1. Evaluation of mechanical strength of samples containing EMAEKK 52
4-4-1-1. Compressive strength of samples containing EMAEKK 52
4-4-1-2. Flexural strength of samples containing EMAEKK 53
4-4-1-3. Hardness of samples containing EMAEKK 54
4-4-2. Polymerization shrinkage measurement of resins containing EMAEKK 55
4-5. Characterization of hybrid dental resins 56
4-5-1. Evaluation of mechanical strength of hybrid resins 56
4-5-1-1. Compressive strength of hybrid resins 56
4-5-1-2. Flexural strength of hybrid resins 57
4-5-1-3. Hardness of hybrid resins 58
4-5-2. Polymerization shrinkage measurement of hybrid resins 59
4-5-3. Observation of fracture surface of hybrid resin 60
CHAPTER 5. CONCLUSIONS 61
REFERENCES 62
ABSTRACT (KOREAN) 69

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