نتایج جستجو برای: phbv

تعداد نتایج: 240  

Journal: :مجله دانشگاه علوم پزشکی کرمانشاه 0
saeed heidari-keshel mostafa rezaei-tavirani esmaeil biazar nayb ali ahmadi maryam ebrahimi abdolaziz ronaghi

background: for tissue engineering of bone, anatomical and operational reconstructions of damaged tissue seem to be vital. this is done via reconstruction of bone and appropriate biological joint with bone tissues of damaged areas. in this study the condition of biodegradable bed nano fiber phbv and ussc cells were used to accelerate bone repair of damaged area. methods: hollow nanofabrication ...

2013
Elahe Masaeli Mohammad Morshed Mohammad Hossein Nasr-Esfahani Saeid Sadri Janneke Hilderink Aart van Apeldoorn Clemens A. van Blitterswijk Lorenzo Moroni

Tissue engineering techniques using a combination of polymeric scaffolds and cells represent a promising approach for nerve regeneration. We fabricated electrospun scaffolds by blending of Poly (3-hydroxybutyrate) (PHB) and Poly (3-hydroxy butyrate-co-3- hydroxyvalerate) (PHBV) in different compositions in order to investigate their potential for the regeneration of the myelinic membrane. The t...

2001
B.M.P. Ferreira C.A.C. Zavaglia

Biocompatible and biodegradable polymers have been studied in the last few years with good clinical success in the fixation and stabilization of bone fractures. The understanding and the control of the polymeric prosthetic degradation process and the effect of its degradation products in the organism are crucial for the success of the implant. In this present work, blends of PLLA/PHBV, obtained...

Journal: :Polimeros-ciencia E Tecnologia 2023

Aiming to produce an antimicrobial dressing for wound healing applications, in this work Tea Tree oil (TTO) was incorporated into PHBV nanofibers by absorption. It observed increase the nanofiber diameter due 5% TTO absorption efficiency, which also led a 54% decrease contact angle. The releasing assay indicates 6.8% release first 24 h – being probably deposited at polymer surface followed mini...

In this work, poly (hydroxybutyrate co hydroxyvalerate) (PHBV) composite nanofibrous scaffold containing hydroxyapatite/bredigite (HABR) nanoparticles was fabricated through electrospining method. The morphology of prepared  nanofibers and the state of the nanoparticles dispersion in nanofiber matrix were investigated using scanning and transmission electron microscopy, respectively. ...

  The purpose of this study was to find a combination of nanocomposite polymer with biomechanical and physical properties suitable for use in the treatment of nerve damage.In this research PCL  and PHBV  with a ratio of 25/75, 10/90 And its nanocomposites were prepared using the same MWCNT nanoparticle with different weight percentages of 1 and 3 wt% by solvent method. To evaluate morphological...

Journal: :Applied sciences 2022

This work reports on the development and performance evaluation of newly developed paper sheets coated, both sides, with thin films biodegradable poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) for applications food packaging. For this, PHBV/paper/PHBV multilayers were first prepared by thermo-sealing technique, optimizing process variables temperature time. Thereafter, multilayer character...

Journal: :Polymer Composites 2021

Hygrothermal aging of neat poly(3-hydroxybutyrate-co-3-hydroxyvalerate) (PHBV) and PHBV filled with an organomodified montmorillonite (C30B) at 3wt. was investigated 65°C 100% relative humidity (RH) up to 100 days. FT-IR data indicated that the carbonyl intensity index decreased exposure time for both samples, while main degradation mechanism occurred through hydrolysis reaction. This led chain...

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