Free radical graft modification of polyethylene with methacrylic acid and styrene monomer
DOI:
https://doi.org/10.3329/cerb.v15i1.7419Keywords:
Degree of grafting, Meth acrylic acid, Free radical, Vinyl monomer, DCPAbstract
Polar groups can be introduced on polyethylene by using polar monomer like acryl amide, acrylic acid and methacrylic acid. In present work binary monomer mixture of methacrylic acid and styrene were grafted onto low density polyethylene in the presence of dicumyl peroxide (DCP) as an initiator. Grafted polyethylene was characterized by using differential scanning calorimetry (DSC), melt flow Indexer (MFI) and Fourier transform infrared spectroscope (FTIR). Low value of MFI as compared to virgin polyethylene, presence of carbonyl peaks in the spectrum of grafted polyethylene and higher endothermic peaks in thermogram of grafted polyethylene confirmed grafting of methacrylic acid and styrene onto polyethylene. MFI values at different loads were used for further rheological study of virgin & grafted polyethylene.
Key words: Degree of grafting, Meth acrylic acid, Free radical, Vinyl monomer, DCP
DOI: http://dx.doi.org/10.3329/cerb.v15i1.7419
Chemical Engineering Research Bulletin 15 (2011) 34-38
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References
.Daniel J. Burnett, Frank Thielmann, Rose A. Ryntz,Correlating thermodynamic and mechanical adhesion phenomena for thermoplastic polyolefin, Springer Boston,2007, 4(2) :PP 211-215
.Shrojal M. Desai, R. P. Singh, Advances in polymer science, Springer Berlin / Heidelberg, 2004, 169: PP 231-294
.S.K.Singh, S.P.Tambe, A.B.Samui, V.S.Raja, Dhirendra Kumar, Maleic acid grafted low density polyethylene for thermally sprayable anticorrosive coatings, Progress in organic coatings ,2006, 55(1):PP 20-26
.Gilberto de O.Meraes,Adriana N.Geraldes,Heloisa A.Zen,Duclerc F. Parra, Ademar B.Lugao,Preliminary study of styrene grafting on Polyethylene films, International Nuclear Atlantic Conference ,2007
. A.Shojaei, R.Fathi, N.Sheikh, Adhesion modification of Polyethylene for metallization using radiation induced grafting of vinyl monomers, Surface & coating technolgy,2007, 201 :PP 7519-7529
.A.Bhattacharya, B.N.Misra, Grafting; a versatile means to modify polymers techniques, factors and applications, Progress in polymer science, 2004, 29: PP 767-814
Franjo Ranogajec, Effect of solvent on radiation grafting and crosslinking of polyethylene, Radiation physics & chemistry,2007 , 76: PP 1381-1384
Yoshikimi Uyama, Koichi Kato and Yoshito Ikada, Surface modification of Polymers by grafting, Advances in polymer science, Springer Berlin / Heidelberg, 1998. 137: PP 1-39
.A.BaranTeke, S.Hamarat Baysal, Immobilization of urease using glycidyl methacrylate grafted nylon-6 membranes, Process biochemistry, 2007, 42: PP 439-443
.K Yamada, T Kimuro,H Tsutaya,M Hirata,Hdrophilic and adhesive properties of methacrylic acid grafted polyethylene plates, Journal of applied polymer science,2003 (44)1:PP 993-1001
.Ging-Ho Hsiue, Wen-Kuei Huang, Preirradiation grafting of acrylic and methacrylic acid onto polyethylene films: Preparation and properties, Journal of applied polymer science, 2003, (30) 3: PP 1023-1033
.J.P.Lawler, A Charlesby, Grafting of acrylic acid onto polyethylene using radiation as initiator, Radiation physics & chemistry ,1980 , (15)5:PP 595-602
. O. N. Tretinnikov,Analysis of photo induced graft polymerization of acrylic acid onto polyethylene films by attenuated total reflectance IR spectroscopy, Journal of applied spectroscopy,2010. (76)6:PP 898-901
. Shenoy AV and Saini DR, Thermoplastic melt rheology and processing, CRC Press, 1996
. Cogswell FN, Polymer melt rheology: a guide for industrial practice, G. Godwin, 1981
