Influence of gamma irradiation on polymerization of pyrrole and glucose oxidase immobilization onto poly (pyrrole)/poly (vinyl alcohol) matrix

2017 ◽  
Vol 400 ◽  
pp. 118-128 ◽  
Author(s):  
Sarada Idris ◽  
Ahmad Ashrif A. Bakar ◽  
Chantara Thevy Ratnam ◽  
Nur Hasiba Kamaruddin ◽  
Sahbudin Shaari
Keyword(s):  
Gamma Irradiation ◽  
Glucose Oxidase ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol

Immobilization of glucose oxidase in a poly [vinyl alcohol] matrix on platinized graphite electrodes by gamma-irradiation

1990 ◽  
Vol 5 (1) ◽  
pp. 47-61 ◽  
Author(s):  
Christos Galiatsatos ◽  
Yoshihito Ikariyama ◽  
James E. Mark ◽  
William R. Heineman
Keyword(s):  
Gamma Irradiation ◽  
Glucose Oxidase ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol ◽  
Graphite Electrodes

scholarly journals Effect of gamma irradiation on thermal properties of poly(vinyl alcohol) solutions

1991 ◽  
Vol 43 (7) ◽  
pp. 1393-1395
Author(s):  
Mohyi A. Kenawy ◽  
Amira Z. Dakroury ◽  
Massarat B. S. Osman
Keyword(s):  
Thermal Properties ◽  
Gamma Irradiation ◽  
Vinyl Alcohol ◽  
Poly Vinyl Alcohol

Improving the Compatibility of Zein/Poly(vinyl alcohol) Blends by Gamma Irradiation and Graft Copolymerization of Acrylic Acid

2010 ◽  
Vol 58 (7) ◽  
pp. 4470-4476 ◽  
Author(s):  
Magdy M. Senna ◽  
Stephane Salmieri ◽  
Abdel-Wahab El-naggar ◽  
Agnes Safrany ◽  
Monique Lacroix
Keyword(s):  
Acrylic Acid ◽  
Gamma Irradiation ◽  
Vinyl Alcohol ◽  
Graft Copolymerization ◽  
Poly Vinyl Alcohol

scholarly journals Physico-chemical characteristics of gamma irradiation crosslinked poly(vinyl alcohol)/magnetite ferrogel composite

2014 ◽  
Vol 68 (6) ◽  
pp. 743-753 ◽  
Author(s):  
Milena Marinovic-Cincovic ◽  
Aleksandra Radosavljevic ◽  
Jelena Krstic ◽  
Jelena Spasojevic ◽  
Natasa Bibic ◽  
...  
Keyword(s):  
Gamma Irradiation ◽  
Vinyl Alcohol ◽  
Magnetic Particles ◽  
Heating Temperature ◽  
Crosslinking Agent ◽  
Poly Vinyl Alcohol ◽  
Chemical Characteristics ◽  
Physico Chemical ◽  
Soft Actuators ◽  
Pva Hydrogel

Magnetic field sensitive gels, ferrogels are new promising class of hydrogels. The coupling of hydrogels and magnetic particles has potential application in soft actuators such as artificial muscles or for hyperthermia application. Here a composite of magnetite particles (Fe3O4) and poly(vinyl alcohol) (PVA) hydrogel is developed using gamma irradiation as a crosslinking agent. PVA and Fe3O4 were chosen because of their well-established biocompatibility, radiation crosslinking potential (PVA), mild magnetic properties and the Curie point near desired heating temperature range (Fe3O4). Physico-chemical characteristics of these systems show the effect of the presence of particles in the process of radiation-induced crosslinking. Obtained PVA/Fe3O4 ferrogel composite has greater swelling capacity, activation energy of dehydration and dehydration rate compared to PVA hydrogel, crosslinked under the same conditions.

scholarly journals POLYMERIC BIOMATERIALS FILM BASED ON POLY(VINYL ALCOHOL) AND FISH SCALE COLLAGEN BY REPETITIVE FREEZE-THAW CYCLES FOLLOWED BY GAMMA IRRADIATION

2013 ◽  
Vol 13 (3) ◽  
pp. 221-228 ◽  
Author(s):  
Dian Pribadi Perkasa ◽  
Erizal Erizal ◽  
Basril Abbas
Keyword(s):  
Gamma Irradiation ◽  
Vinyl Alcohol ◽  
Testing Machine ◽  
Poly Vinyl Alcohol ◽  
Fish Scale ◽  
Scanning Calorimetry ◽  
Collagen Film ◽  
Freeze Thaw ◽  
Gel Fraction ◽  
Swelling Kinetic

The polymeric biomaterial film based on poly(vinyl alcohol) (PVA) and fish collagen of Lates calcarifer scale were synthesized by three times freeze-thaw cycles followed by gamma irradiation at varied doses of 0, 10, 20, and 30 kGy respectively. Characteristic of PVA/collagen film as effect of constituting polymers and cross linking methods were investigated using Fourier Transform Infrared (FTIR) spectrophotometer, Differential Scanning Calorimetry (DSC), Universal Testing Machine (UTM), and Chroma Mater. Its gel fraction and swelling kinetic were determined by gravimetry. The result showed that IR spectra of controlled and irradiated film demonstrated characteristic vibration bands of both constituting materials. The DSC analysis revealed that gamma irradiation induced interaction between PVA and collagen at molecular level. Improvement of tensile properties by gamma irradiation was observed on tensile strength at 30 kGy with p < 0.05. Gamma irradiation also significantly (p < 0.05) increased yellowness of PVA/collagen film, reduced swelling kinetic, and increased gel fraction of films.

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