Stress–strain properties of graft copolymers of polyethylene and acrylic acid

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).

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“…This is increases the strength of the graft copolymer and reducing their elasticity, because unlike PE, PAA and PSS are glassy polymers [42–44]. …”

Section: Resultsmentioning

confidence: 99%

Radiation graft post-polymerization of sodium styrene sulfonate onto polyethylene

Kitaeva

Дуфлот

Il’icheva

2013

J Radioanal Nucl Chem

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Section: Introductionmentioning

confidence: 99%

“…It has been shown previously (1,2) that the grafting of acrylic acid (AA) to polyethylene (PE) improves the strength properties and deteriorates the strain characteristics of the material. In addition, the stress-strain properties of graft copolymers of PE and AA have been noted (2,3) to depend on the segmental mobility of PE macromolecules in amorphous regions. Since the mobility of macromolecules is determined by the value of intermolecular interaction energy (Eii) in the system, it was of great importance to substantiate experimentally a change in intermolecular interaction in an amorphous phase of PE as a result of the AA grafting.…”

Section: Introductionmentioning

confidence: 99%

Intermolecular interaction energy and mechanical properties of graft copolymers of polyethylene and acrylic acid

Polikarpov¹,

Prokopchuk²,

Osipenko³

et al. 1984

J. Polym. Sci. B Polym. Lett. Ed.

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Radiation‐Induced graft copolymerization of methacrylic acid onto polypropylene fibers. V. Mechanical properties

Mukherjee

Gupta

1985

J of Applied Polymer Sci

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SynopsisMechanical properties of polypropylene-g -poly(methacrylic acid) fibers, prepared by graft copolymerization of methacrylic acid onto polypropylene fiber using simultaneous gamma ray irradiation technique, were evaluated. In general, an improvement in the mechanical behavior of the polypropylene fiber by grafting was observed. Denier and initial modulus of the fiber showed a linear increase with the percent graft, and elongation showed an opposite trend.The results have been explained in terms of reinforcing effect of poly(methacry1ic acid) grafts and reduction in the segmental mobility of the polymeric chains. Tenacity also increases up to certain graft level, beyond which a sharp decrease occurs, probably due to the influence on the compactness of the macromolecular chains with the further grafting.

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Stress–strain properties of graft copolymers of polyethylene and acrylic acid

Cited by 7 publications

References 1 publication

Radiation graft post-polymerization of sodium styrene sulfonate onto polyethylene

Radiation graft post-polymerization of sodium styrene sulfonate onto polyethylene

Intermolecular interaction energy and mechanical properties of graft copolymers of polyethylene and acrylic acid

Radiation‐Induced graft copolymerization of methacrylic acid onto polypropylene fibers. V. Mechanical properties

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