Improving the Physical Properties of Polyvinyl Alcohol (PVA)-Melanin Doping

被引：4

作者：

Ghannam, Magdy M. ^{[1
]}

Awad, Badreeah ^{[2
]}

Al-Ayed, Mohammed S. ^{[2
]}

Aly, Amany A. ^{[1
]}

机构：

[1] Cairo Univ, Fac Sci, Biophys Dept, Giza, Egypt

[2] King Saud Univ, Coll Sci, Phys & Astron Dept, Riyadh 11451, Saudi Arabia

来源：

EGYPTIAN JOURNAL OF CHEMISTRY | 2021年 / 64卷 / 07期

关键词：

PVA; melanin; electrical conductivity; dielectric constant; FTIR; ELECTRICAL-CONDUCTIVITY; PVA; ELECTROLYTE;

D O I：

10.21608/EJCHEM.2021.46441.3061

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Polyvinyl alcohol (PVA) is an artificial polymer that used in many medical applications but it has a few disadvantages that can overcome by the addition of certain chemical compounds. The present study aimed to investigate the efficacy of melanin to improve the properties of biopolymer PVA. Doping may reinforce the PVA electrical, optical and mechanical properties. In the present work, dielectric relaxation and spectrophotometric techniques were used to characterize the biopolymer PVA doped melanin of different concentration. Increase melanin concentration cause reduction of both dielectric constant and relaxation times accompanied with increased in conductivity. Moreover, a small shift in Fourier Transform Infrared Spectroscopy (FTIR) of PVA with increasing the melanin concentration may be related to the increase OH. In conclusion melanin doping could improve the medical and the electronic industries applications of PVA.

引用

页码：3665 / 3670

页数：6

共 25 条

[11] Herbal melanin modulates tumor necrosis factor alpha (TNF-α), interleukin 6 (IL-6) and vascular endothelial growth factor (VEGF) production [J].