Document Details
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Document Type |
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Thesis |
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Document Title |
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Synthesis and Characterization of Some Electro-Active Polymer (EAP) Composite for Biomedical Use تركيب و توصيف بعض المركبات البوليميرية النشطة كهربائياً لاستخدامها في مجال الهندسة الطبية الحيوية |
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Subject |
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Faculty of Engineering |
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Document Language |
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Arabic |
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Abstract |
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Conductive biomaterial constructs have attracted researchers recently because of their special and enhanced characteristics. Since there is a need to interact actively for biomaterials with biological cells and the surrounding environments, there is a growing interest to design newer biomaterials as a smart matrix. The novel smart electroactive matrices are expected to influence, to guide or to detect cellular activities and better control biological phenomena.
Electro-Active Polymers (EAPs), in this context, are quite promising that provide an interface between electronics and biology. Numerous efforts exit in literature to synthesize EAPs using bi- or multi-component polymers, however, one of the major problems still remains unsolved and that is the preservation of conductive properties during their processing, for instance, blending strategies may partially compromise the final conductive properties of resultant synthesized product or material. In this thesis, the plan is to generate new recipes in order to synthesize composite EAPs with enhanced chemical/physical properties based on basic conductivity mechanisms by using commonly employed polymers and dopants for this purpose. Our objectives include 3D manipulation of EAPs through making blends, composite or porous materials by combining degradable polymers with conducting ones in different environmental conditions and/or different mixing ratios. The newer materials thus synthesized may find their use in current applications in different biomedical research areas including tissue engineering, biosensors, and molecular delivery.
In this study, the adopted strategy for blending or making the composite was initial blending method since the emulsion method resultant fibers or mats did not show better conductivity or better encapsulation of the particles within the fiber.
The challenging part was achieving the conductivity since the resultant materials were very soft and easily damaged.
In this thesis, the main materials used were carbon nano-particles SW, hydroxyapatite (HA), and Polyvilinealchohol PVA as the main polymer; moreover, different types of solvents were used such as( Triton, distilled water, HCL, H2So4) in order to dissolve the PANI as it is known for its conductive characterization.
The composites were prepared and studied using different equipment. Sonicating machine, scales, ball milling device, AFM kethley device, and electrospinning system.
The protocol used in this study was to prepare solutions then produce mats and fibers, the fibers were checked using AFM and the multimeter and other methods were used to test the conductivity in mats eventually this will be discussed in details in the experiment and methodology section.
Lastly, the results will be presented with explanations in the results chapter.
Keywords: Characterization, Fabrication, Biomedical Engineering, Polymer, Carbon Nano Tubes (CNT), Electrospinning, Atomic Force Microscopy (AFM), Electro-active. |
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Supervisor |
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Prof. Mohammad Asif Hussain |
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Thesis Type |
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Master Thesis |
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Publishing Year |
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1440 AH
2019 AD |
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Co-Supervisor |
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Dr. Abdulhameed AlKhateeb |
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Added Date |
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Sunday, August 18, 2019 |
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Researchers
| هيثم محمد الحرازي | Alharazi, Haitham Mohammed | Researcher | Master | |
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