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研究生： 謝恩娜
Barbisan, Ana Maria
論文名稱： 光固化、PVP 摻雜、可生物降解聚合物複合材料的電導率與機械性質表徵
Characterization of Conductivity and Mechanical Properties of Photocurable, PVP-doped, Biodegradable Polymer Composites
指導教授： 王潔
Wang, Jane
口試委員: 黃振煌
Huang, Jen-Huang
陳俊太
Chen, Jiun-Tai
學位類別： 碩士
Master
系所名稱： 工學院 - 化學工程學系
Department of Chemical Engineering
論文出版年： 2024
畢業學年度： 112
語文別： 英文
論文頁數： 53
中文關鍵詞： 導電聚合物 、聚乙烯吡咯烷酮 、導電性 、光固化聚合物
外文關鍵詞： Conductive polymers, polyvinylpyrrolidone, electrical conductivity, photocurable polymers
相關次數： 點閱：29  下載：0 
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    • 導電聚合物複合材料（CPCs）具有可與無機材料相媲美的獨特而卓越的性能。它們的高環境穩定性和可調節的機械性能使它們特別令人著迷。雖然大多數聚合物本身並不導電，但少數聚合物表現出優異的電性能，例如聚（3,4-乙撐二氧噻吩）（PEDOT）、聚苯胺（PANI）和聚乙烯吡咯烷酮（PVP） 。這些 CPCs 可以合併到絕緣體或低導電聚合物以增強其導電性，然而，它們中的大多數都具有生物降解性。 因此，在本研究中，選擇 PVP 作為添加劑導電聚合物，並與三種不同的可生物降解、光固化聚合物共混。
    聚合物聚癸二酸甘油酯（PGSA）、聚癸二酸甘油酯甲基丙烯酸酯（PGSMA）和聚（乙二醇）二丙烯酸酯（PEGDA）由於其可調節的機械性能、生物相容性在生物醫學領域顯示出巨大的前景。 PVP 摻雜的添加進一步增強了它們的導電潛力，使它們對生物醫學應用更具吸引力。評估了本徵聚合物複合材料和摻雜聚合物複合材料的溶脹比、電導率、介電常數和機械性能。由於 PVP 促進液體吸收，複合材料在含有 PVP 摻雜樣品的鹽類介質中表現出較高的電導率值。將薄膜浸入鹽溶液中會引入額外的離子，以促進聚合物鍊網絡內的電子傳輸。此外，PGSA-PVP 和 PGSMA-PVP 在鹽類介質中表現出高電導率，並具有值得稱讚的機械性能。

    Conductive polymer composites (CPCs) possess unique and exceptional properties that can rival inorganic materials. Their high environmental stability and adjustable mechanical properties make them particularly intriguing. While most polymers are not inherently conductive, a select few exhibit excellent electrical properties, such as poly(3,4-ethylenedioxythiophene) (PEDOT), polyaniline (PANI), and polyvinylpyrrolidone (PVP). These CPCs can be incorporated into insulators or low-conductive polymers to enhance their conductivity—however, most of them present resistance to biodegradability. Therefore, in this study, PVP was chosen as the additive conductive polymer and blended with three different biodegradable, photocurable polymers.
    The polymers poly(glycerol-co-sebacate) acrylate (PGSA), poly(glycerol sebacate) methacrylate (PGSMA), and poly(ethylene glycol) diacrylate (PEGDA) show great promise in the biomedical field due to their tunable mechanical properties, biocompatibility, and photo-curing characteristics. The addition of PVP doping further enhances their potential for conductivity, making them even more attractive for biomedical applications. The intrinsic and doped polymer composites were evaluated for their swelling ratio, electrical conductivity, dielectric constant, and mechanical properties. The electrical conductivity showed higher values for composites in saline-type media with PVP-doped samples due to liquid absorption facilitated by PVP. Immersing the films in saline solutions introduced extra ions to promote electron transport within the polymer chain network. Moreover, PGSA-PVP and PGSMA-PVP demonstrate high conductivity in saline-type media and possess commendable mechanical properties.

    Abstract I 摘要 II Table of Contents III Table of Figures VI Content of Tables VIII Chapter 1. Introduction 1 1.1 Conductive Polymers 1 1.1.1 Electrochemical Properties of Polymers 1 1.1.2 Conductive Polymer Blends 4 1.2 Polyvinylpyrrolidone (PVP) as the Conductive Polymer in Polymer Blending 5 1.2.1 Assisting in Electron Transport 6 1.2.2 Change in Physical and Mechanical Properties of the Films 6 1.3 Electron Transport of Polymeric Films in a Medium 8 1.4 Introduction to Biodegradable Polymers 9 1.4.1 Poly(glycerol sebacate) Prepolymer 11 1.4.2 Poly(glycerol sebacate) acrylate 11 1.4.3 Poly(glycerol sebacate) methacrylate 12 1.4.4 Poly(ethylene glycol) diacrylate 13 1.5 Motivation 15 Chapter 2. Experimental Method 16 2.1 Chemicals and Instruments 16 2.2 Polymers Preparation 19 2.2.1 Synthesis of PGS Prepolymer 19 2.2.2 Synthesis of PGSA 20 2.2.3 Synthesis of PGSMA 20 2.2.4 Synthesis of PEGDA 21 2.2.5 Intrinsic and PVP-doped Polymer Composites Film Preparation 22 2.3 Materials Characterization 23 2.3.1 Electrical Conductivity Measurement 23 2.3.2 Theoretical Calculation of Electrical Conductivity 24 2.3.3 Swelling Ratio Measurement 24 2.3.4 Water Contact Angle 25 2.3.5 Mechanical Properties Characterization 25 Chapter 3. Results & Discussion 26 3.1 Polymer Characterization 26 3.2 Water Contact Angle 30 3.3 Swelling Ratio 31 3.4 Electrical Conductivity Measurement 33 3.4.1 Conductivity of Polymeric Films in Different Mediums 33 3.4.2 The Conductivity in Aqueous and Saline Solutions 34 3.4.3 The Difference in Conductivity in Saltwater and DMEM 37 3.5 Mechanical Characterization 39 3.6 Applications in Organic Semiconductor-based Electronic Devices 41 Chapter 4. Conclusions 42 Chapter 5. Future Work 43 5.1 Dielectric Constant 43 5.2 Characterization of Electric Modulus 44 5.3 Electrical Conductivity Measurement of Flexible Samples Under Stress 44 Chapter 6. References 45

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