Radiation-induced grafting of stimuli-responsive binary monomers: PDMAEMA/PEGMEMA onto PP films | Health & Environmental Research Online (HERO)

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Citation
Tags

HERO ID

1127452

Reference Type

Journal Article

Title

Radiation-induced grafting of stimuli-responsive binary monomers: PDMAEMA/PEGMEMA onto PP films

Author(s)

Hernandez-Martinez, AR; Bucio, E

Year

2010

Is Peer Reviewed?

Yes

Journal

Journal of Radioanalytical and Nuclear Chemistry
ISSN: 0236-5731
EISSN: 1588-2780

Volume

283

Issue

Page Numbers

559-563

DOI

10.1007/s10967-009-0385-z

Web of Science Id

WOS:000274333100003

Abstract

Both poly[2-(dimethylamino) ethyl methacrylate] (PDMAEMA) and poly(ethylene glycol) methyl ether methacrylate (PEGMEMA) were radiation grafted onto polypropylene films (PP) using gamma radiation from a (60)Co source. PP was pre-irradiated by gamma ray for modification following by grafted PDMAEMA and PEGMEMA by a one step method. Grafting was studied as a function of the pre-irradiation dose between 20 and 180 kGy, dose rate of 10.4 kGy/h, and monomer concentration 50% of PDMAEMA/PEGMEMA (1/1) in different solvents (toluene, acetone, and methanol). FTIR-ATR, TGA, and DSC were carried out in the characterization of the graft copolymer obtained. Stimuli-responsive behavior and critical pH point were studied by swelling in water. pH and thermo-responsive films of PE-g-(DMAEMA/PEGMEMA) presented a lower critical solution temperature (LCST) of 50 A degrees C and critical pH point around 8.7.

Keywords

Grafting; LCST; pH critical; DMAEMA; PEGMEMA