Swelling-assisted graft copolymerization of 4-vinyl pyridine on poly(ethylene terephthalate) films using a benzoyl peroxide initiator

1996 ◽  
Vol 62 (8) ◽  
pp. 1161-1165 ◽  
Author(s):  
Halil ?brahim �nal ◽  
Oya ?anli
Keyword(s):  
Benzoyl Peroxide ◽  
Ethylene Terephthalate ◽  
Graft Copolymerization ◽  
Poly Ethylene Terephthalate ◽  
Vinyl Pyridine ◽  
Poly Ethylene

scholarly journals Surface Modification of PET Fabric by Graft Copolymerization with Acrylic Acid and Its Antibacterial Properties

2011 ◽  
Vol 2011 ◽  
pp. 1-8 ◽  
Author(s):  
M. Abdolahifard ◽  
S. Hajir Bahrami ◽  
R. M. A. Malek
Keyword(s):  
Acrylic Acid ◽  
Benzoyl Peroxide ◽  
Ethylene Terephthalate ◽  
Graft Copolymerization ◽  
Antibacterial Properties ◽  
Pet Fabric ◽  
Poly Ethylene Terephthalate ◽  
Graft Yield ◽  
Poly Ethylene ◽  
Diffusion Properties

Graft copolymerization of acrylic acid (AA) onto Poly(ethylene terephthalate) (PET) fabrics with the aid of benzoyl peroxide was carried out. The effect of polymerization parameters on the graft yield was studied. Percent grafting was enhanced significantly by increasing benzoyl peroxide (BP) concentrations up to 3.84 g/lit and then decreased upon further increase in initiator concentration. Preswelling of PET leads to changes in its sorption-diffusion properties and favors an increase in the degree of grafting. The antibiotics treated grafted fabrics showed antibacterial properties towards gram-positive and gram-negative microorganisms. FTIR and SEM were used to characterize AA-grafted polyester fabrics.

Grafting of 4-Vinyl Pyridine onto Polyesters Initiated by Potassium Diperiodatocuprate(III)

2011 ◽  
Vol 287-290 ◽  
pp. 58-64
Author(s):  
Jian Ping Zhang ◽  
Yong Guang Zhao ◽  
Ying Zhao ◽  
Li Man Liang ◽  
Yan Jun Ren ◽  
...  
Keyword(s):  
Heavy Metal ◽  
Heavy Metal Ions ◽  
Ethylene Terephthalate ◽  
Graft Copolymerization ◽  
Redox System ◽  
Initiator Concentration ◽  
Spectra Analysis ◽  
Poly Ethylene Terephthalate ◽  
Vinyl Pyridine ◽  
Poly Ethylene

In this article, the graft copolymerization of 4-vinyl pyridine onto poly (ethylene terephthalate)(PET) via the potassium diperiodacuprate(III)–PET redox system as an initiator was investigated in an alkaline medium. The graft copolymer was characterized with Fourier-transform infrared spectra analysis. A mechanism is proposed to explain the generation of radicals and the initiation. The effects of reaction variables, such as the initiator concentration, the ratio of monomer to PET, pH, and reaction temperature and time, are investigated, and the grafting conditions are optimized. Graft copolymers with high grafting efficiency are obtained, thus indicating that potassium diperiodacuprate(III)-PET redox system is an efficient initiator for this graft copolymerization. The quaternized PET-g-PVP (QPEVP) is proved to be an excellent adsorbent to heavy metal ions.

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