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Radiation graft post-polymerization of sodium styrene sulfonate onto polyethylene.

Kitaeva NK, Duflot VR, Ilicheva NS - J Radioanal Nucl Chem (2013)

Bottom Line: Post-irradiation grafting of sodium styrene sulfonate (SSS) in the presence of acrylic acid (AA) has been investigated on polyethylene (PE) pre-exposed to gamma radiation at room temperature in the air.The presence of SSS links in the grafted PE copolymers was detected by the methods of UV and FTIR spectroscopy.It was established that PE copolymers grafted with sulfonic acid and carboxyl groups have higher strength characteristics (16.3 MPa) compared to the samples containing only carboxyl groups (11 MPa).

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Affiliation: Branch of FSUE "Scientific and Research Institute of Physical Chemistry named after L.Ya. Karpov", 109 km, Kievskoye Shosse, Obninsk, 249033 Kaluga Region Russia.

ABSTRACT

Post-irradiation grafting of sodium styrene sulfonate (SSS) in the presence of acrylic acid (AA) has been investigated on polyethylene (PE) pre-exposed to gamma radiation at room temperature in the air. Special attention was paid to the effect of low molecular weight salt additives on the kinetics of graft copolymerization of SSS and AA. The presence of SSS links in the grafted PE copolymers was detected by the methods of UV and FTIR spectroscopy. Based on the FITR spectroscopy and element analysis data, a mechanism was proposed for graft copolymerization of SSS and AA onto PE. The mechanical properties of the graft copolymers were studied. It was established that PE copolymers grafted with sulfonic acid and carboxyl groups have higher strength characteristics (16.3 MPa) compared to the samples containing only carboxyl groups (11 MPa).

No MeSH data available.


Effect of sodium salt additives on AA grafting kinetics. 1 no additives, 2 CH3COONa, 3 NaCl. Concentration, mol dm−3: AA—6.3; CH3COONa—2.0; NaCl—2.0
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Fig3: Effect of sodium salt additives on AA grafting kinetics. 1 no additives, 2 CH3COONa, 3 NaCl. Concentration, mol dm−3: AA—6.3; CH3COONa—2.0; NaCl—2.0

Mentions: Low molecular weight sodium salts (chloride and acetate) were added into the reaction mixture to form ionic pairs, and effects of the salt additives on AA graft polymerization (Fig. 3) and graft polymerization of AA and SSS from the binary mixture (Fig. 4) were studied.Fig. 3


Radiation graft post-polymerization of sodium styrene sulfonate onto polyethylene.

Kitaeva NK, Duflot VR, Ilicheva NS - J Radioanal Nucl Chem (2013)

Effect of sodium salt additives on AA grafting kinetics. 1 no additives, 2 CH3COONa, 3 NaCl. Concentration, mol dm−3: AA—6.3; CH3COONa—2.0; NaCl—2.0
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

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Fig3: Effect of sodium salt additives on AA grafting kinetics. 1 no additives, 2 CH3COONa, 3 NaCl. Concentration, mol dm−3: AA—6.3; CH3COONa—2.0; NaCl—2.0
Mentions: Low molecular weight sodium salts (chloride and acetate) were added into the reaction mixture to form ionic pairs, and effects of the salt additives on AA graft polymerization (Fig. 3) and graft polymerization of AA and SSS from the binary mixture (Fig. 4) were studied.Fig. 3

Bottom Line: Post-irradiation grafting of sodium styrene sulfonate (SSS) in the presence of acrylic acid (AA) has been investigated on polyethylene (PE) pre-exposed to gamma radiation at room temperature in the air.The presence of SSS links in the grafted PE copolymers was detected by the methods of UV and FTIR spectroscopy.It was established that PE copolymers grafted with sulfonic acid and carboxyl groups have higher strength characteristics (16.3 MPa) compared to the samples containing only carboxyl groups (11 MPa).

View Article: PubMed Central - PubMed

Affiliation: Branch of FSUE "Scientific and Research Institute of Physical Chemistry named after L.Ya. Karpov", 109 km, Kievskoye Shosse, Obninsk, 249033 Kaluga Region Russia.

ABSTRACT

Post-irradiation grafting of sodium styrene sulfonate (SSS) in the presence of acrylic acid (AA) has been investigated on polyethylene (PE) pre-exposed to gamma radiation at room temperature in the air. Special attention was paid to the effect of low molecular weight salt additives on the kinetics of graft copolymerization of SSS and AA. The presence of SSS links in the grafted PE copolymers was detected by the methods of UV and FTIR spectroscopy. Based on the FITR spectroscopy and element analysis data, a mechanism was proposed for graft copolymerization of SSS and AA onto PE. The mechanical properties of the graft copolymers were studied. It was established that PE copolymers grafted with sulfonic acid and carboxyl groups have higher strength characteristics (16.3 MPa) compared to the samples containing only carboxyl groups (11 MPa).

No MeSH data available.