Modification of mechanical properties of oriented polypropylene by ozone oxidation

Попов, А. А.; Russak, A.V; Popova, Ye.S.; Komova, N. N.; Zaikov, G.Ye.

doi:10.1016/0032-3950(88)90272-9

Cited by 5 publications

(2 citation statements)

References 3 publications

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“…It was reported that simultaneous degradation and rebuilding of macromolecules was the reason for the property changes in polymers after O 3 treat- ment. 14,22 In our study, O 3 concentration was also a signi®cant factor and had a negative effect on TS and EB for LLDPE (p < 0.05). Also, the RH of O 3 gas had only a slight reducing effect on TS (p < 0.1).…”

Section: Mechanical Propertiesmentioning

confidence: 46%

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Effects of ozone exposure on the structural, mechanical and barrier properties of select plastic packaging films

Özen¹,

Mauer²,

Floros³

2002

Packag Technol Sci

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The effects of ozone (O 3 ) gas exposure at various concentrations and treatment times on structural, mechanical and barrier properties of polyethylene and polyamide ®lms were investigated. Changes in the structure of the ®lms were monitored using an FT-IR spectrometer. The results showed that O 3 treatment affected polyethylene and polyamide ®lms differently. While O 3 treatment caused formation of oxygen-containing functional groups and degradation of polymeric chains in polyethylene ®lms, O 3 treatment of polyamide ®lms signi®cantly increased the ±C±N± stretch observed at 1125 cm À1 in the FT-IR spectra. The changes in the mechanical properties of polyethylene ®lms depended on the O 3 treatment conditions (temperature and O 3 concentration were the most signi®cant), but an increase in tensile strength of polyamide ®lms was observed regardless of the treatment conditions. Permeability to O 2 for both types of ®lms decreased with increasing O 3 treatment time.

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Section: Mechanical Propertiesmentioning

confidence: 46%

“…Another study performed with oriented PP ®lms also reported an improvement of mechanical properties at the initial stage of O 3 treatment and concluded that the improvement was due to the crystallization of macromolecules that undergo further structure formation. 22 …”

Section: Mechanical Propertiesmentioning

confidence: 99%