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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).

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.


Effect of AA concentration on grafting kinetics. SSS concentration: 1 mol dm−3, AA concentration, mol dm−3: 1 0, 2 6.3, 3 10.5
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Fig2: Effect of AA concentration on grafting kinetics. SSS concentration: 1 mol dm−3, AA concentration, mol dm−3: 1 0, 2 6.3, 3 10.5

Mentions: The use of a binary mixture of monomers, differing in the degree of dissociation of ionogenic groups, can change the process of grafting. Kinetics of AA and SSS grafting from the binary mixture is shown in Fig. 2. From Fig. 2 it is seen that with increasing AA concentration in the grafting solution the initial rate of the process and grafting degree also increase. Thus, grafting degree reaches 32 % for 4 h grafting at AA concentrations 6.3 mol dm−3 and 52 % for 0.5 h grafting at AA concentrations 10.5 mol dm−3 (Fig. 2, curves 2, 3).Fig. 2


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

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

Effect of AA concentration on grafting kinetics. SSS concentration: 1 mol dm−3, AA concentration, mol dm−3: 1 0, 2 6.3, 3 10.5
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

Show All Figures
getmorefigures.php?uid=PMC4514663&req=5

Fig2: Effect of AA concentration on grafting kinetics. SSS concentration: 1 mol dm−3, AA concentration, mol dm−3: 1 0, 2 6.3, 3 10.5
Mentions: The use of a binary mixture of monomers, differing in the degree of dissociation of ionogenic groups, can change the process of grafting. Kinetics of AA and SSS grafting from the binary mixture is shown in Fig. 2. From Fig. 2 it is seen that with increasing AA concentration in the grafting solution the initial rate of the process and grafting degree also increase. Thus, grafting degree reaches 32 % for 4 h grafting at AA concentrations 6.3 mol dm−3 and 52 % for 0.5 h grafting at AA concentrations 10.5 mol dm−3 (Fig. 2, curves 2, 3).Fig. 2

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.