NATIONAL BIBLIOGRAPHY NUMBER
Number
پ۲۹۴۷۷
LANGUAGE OF THE ITEM
.Language of Text, Soundtrack etc
per
TITLE AND STATEMENT OF RESPONSIBILITY
Title Proper
تهیه و بررسی خواص فیلم‌های پلیمری برپایه کربوکسی‌متیل‌سلولز و پلی‌وینیل‌الكل با استحكام و ارتجاعیت بالا
First Statement of Responsibility
الهام قليزاده
.PUBLICATION, DISTRIBUTION, ETC
Name of Publisher, Distributor, etc.
شیمی
Date of Publication, Distribution, etc.
۱۴۰۲
PHYSICAL DESCRIPTION
Specific Material Designation and Extent of Item
۸۳ص.
Accompanying Material
سی دی
DISSERTATION (THESIS) NOTE
Dissertation or thesis details and type of degree
کارشناسی ارشد
Discipline of degree
شیمی گرایش شیمی کاربردی
Date of degree
۱۴۰۲/۰۶/۲۱
SUMMARY OR ABSTRACT
Text of Note
چكيده: هيدروژل‌ها شبكه‌هاي پليمري كشسان اشباع از آب مي‌باشند. هيدروژل‌ها را مي‌توان با تكنيك‌هاي متفاوت به اشكال گوناگون ايجاد نمود. فيلم‌هاي پليمري يكي از اشكال ايجاد شده توسط هيدروژل‌ها مي‌باشد كه در سال‌هاي اخير در صنعت و زيست پزشكي مورد توجه بسياري قرار گرفته‌اند. در گذشته از مشتقات نفتي براي توليد فيلم‌هاي پليمري استفاده مي‌شد كه به علت زيست‌ناسازگاري و آسيب‌هاي ايجاد كننده، توليد فيلم‌هاي پليمري بر پايه پليمرهاي طبيعي حائز اهميت شد. پليمرهاي برپايه تركيبات طبيعي علي‌رغم زيست‌سازگاري و توانايي تشكيل فيلم مناسب داراي معايبي همچون عدم استحكام كافي مي‌باشند، كه استفاده از پليمرهاي سنتزي زيست‌سازگار راه حل مناسبي براي كاهش عيوب و بهبود خواص فيلم توسط تركيب اين دونوع پليمر مي‌باشد. همچنين مي‌توان از عوامل اتصال دهنده عرضي، براي بهبود خواص مكانيكي بهره برد. در پروژه حاضر، طراحي و توليد فيلم‌هاي پليمري بر پايه كربوكسي‌متيل‌سلولز كه يك پليمر طبيعي، و پلي‌وينيل‌الكل كه يك پليمر سنتزي مي‌باشد توسط دو نوع عامل اتصال دهنده عرضي متفاوت به روش
Text of Note
Abstract: Hydrogels are elastic polymeric networks saturated with water. Hydrogels can be created in different ways with different techniques. Polymeric films are one of the forms created by hydrogels, which have received a lot of attention in recent years in the industry and biomedicine. In the past, petroleum derivatives were used to produce polymer films, and due to their non-biocompatibility and environmental damage, the production of polymer films based on natural polymers became important. Although polymers based on natural compounds are biocompatible and can form a suitable film, they show some disadvantages, such as insufficient strength. Using biocompatible synthetic polymers is a suitable approach to overcome these disadvantages and improve film properties by combining these two polymers. Also, the use of cross-linking agents improve mechanical properties. In the present project, the design and production of polymeric films based on carboxymethyl cellulose (CMC), which is a natural polymer, and polyvinyl alcohol (PVA), which is a synthetic polymer, were prepared by two different types of cross-linking agents by solvent casting method. For this purpose, firstly, by chemical cross-linking method, CMC polymer and PVA were mixed by two different types of cross-linking agents, vanilla extract and citric acid, separately in the presence of glycerol softening agent to increase elasticity to create a film. After determining the tensile strength of these samples, two polymer film samples were selected based on the optimal results of the tensile strength, and to check the structural and chemical characteristics of the resulting films and compounds, different analyses such as SEM, FT-IR, XRD, mechanical strength and transparency were performed. The tensile strength analysis performed on the films shows that the resulting film in the presence of vanilla extract cross-linking agent has higher tensile strength and strain, and the modulus and toughness are better compared to the films with citric acid cross-linker. SEM images showed that the degree of compatibility and better mixing in the presence of vanilla extract cross-linking agent was higher than the resulting films with the citric acid cross-linking agent, and no accumulation or phase separation occurred. The results of UV-Vis analysis showed that the film prepared in the presence of vanilla extract cross-linking agent has full transparency. The resulting films with the citric acid cross-linking agent have a lower amount of transparency than the former, which can be due to the cross-linking agent's weakness and some accumulation on its surface. Based on our results, it can be concluded that the resulting film prepared in the presence of the chemical cross-linking agent vanilla extract has more favorable characteristics as a polymer film for use in various industrial and biomedical fields.
OTHER VARIANT TITLES
Variant Title
Preparation and properties investigation of polymeric films based on carboxymethyl cellulose and polyvinyl alcohol with high strength and elasticity
PERSONAL NAME - PRIMARY RESPONSIBILITY
Entry Element
قليزاده،
Part of Name Other than Entry Element
الهام
Relator Code
تهیه کننده
PERSONAL NAME - SECONDARY RESPONSIBILITY
Entry Element
اولاد،
Entry Element
بايراموغلو،
Part of Name Other than Entry Element
علی
Part of Name Other than Entry Element
گلاي
Dates
استاد راهنما
Dates
استاد مشاور
