نتایج جستجو برای: chitosan nanofibers

تعداد نتایج: 24043  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه محقق اردبیلی - دانشکده علوم 1392

مهندسی بافت ترکیبی از سلول و داربست سه بعدی جهت ترمیم بافت آسیب دیده یا از بین رفته ی ماهیچه است. در این راستا, نانو داربست های کامپوزیت نانولوله های کربنی و کایتوزان و هیدرکسی آپاتیت، نانولوله های کربنی و کایتوزان و داربست کایتوزان با روش freeze dryingتهیه شد. داربست های تهیه شده، از لحاظ خصوصیات سطحی، درصد تخلخل، اندازه ی منافذ، نحوه ی توزیع منافذ، رفتار تخریب پذیریو ترکیب تشکیل دهنده ی داربس...

Journal: :Reactive & Functional Polymers 2021

The combination of biodegradable fibers at nanoscale with plant-based extracts is attracting increasing attention to produce wound dressing systems. In this work, nanofibers based on chitosan (CS), poly(ethylene oxide) (PEO), cellulose nanocrystals (CNC) and acacia extract were developed by electrospinning. Firstly, the polymeric formulations electrospinning parameters optimized, resulting in a...

Atena Shapourzadeh, Hadi Bakhshi, Seyed Mohammad Atyabi, Shiva Irani,

Background: Through combining two synthetic and natural polymers, scaffolds can be developed for tissue engineering and regenerative medicine purposes. Methods: In this work, carboxymethyl chitosan (CMC; 20%) was grafted to Polycaprolactone (PCL) nanofibers using the cold atmospheric plasma of helium. The PCL scaffolds were exposed to CAP, and functional groups were developed on the PCL surface...

Journal: :Journal of hazardous materials 2013
Fatma Kayaci Zeynep Aytac Tamer Uyar

Surface modified electrospun polyester (PET) nanofibers with cyclodextrin polymer (CDP) were produced (PET/CDP). CDP formation onto electrospun PET nanofibers was achieved by polymerization between citric acid (CTR, crosslinking agent) and cyclodextrin (CD). Three different types of native CD (α-CD, β-CD and γ-CD) were used to form CDP. Water-insoluble crosslinked CDP coating was permanently ad...

The role of heart disease in increasing worldwide death and the limited availability of organs for transplantation have encouraged multiple strategies to fabricate functional and implantable constructs. One of these strategies is to develop a biologically similar heart tissue scaffold, in which two types of fiber and hydrogel are commonly used. Toward this goal, taking advantage of both hydroge...

Journal: :Bio-medical materials and engineering 2014
Long Chen Jian Kang Sachiko Sukigara

Superfine Particles (SP) of soluble eggshell membrane and medical grade polyurethane (MPU) blend nanofibers were prepared by electrospinning different blend ratios of SP/MPU suspensions for regeneration of the natural fiber-like structure of the eggshell membrane. The addition of SP had no obvious effect on the electrospinning process of MPU nanofibers, and the SP were randomly dispersed in the...

The role of heart disease in increasing worldwide death and the limited availability of organs for transplantation have encouraged multiple strategies to fabricate functional and implantable constructs. One of these strategies is to develop a biologically similar heart tissue scaffold, in which two types of fiber and hydrogel are commonly used. Toward this goal, taking advantage of both hydroge...

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