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Polyphosphates as Inhibitors for Poly(vinyl Chloride) Photodegradation
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Three polyphosphates were used as inhibitors for poly(vinyl chloride) (PVC) photodegradation. The polyphosphates were added to PVC at a concentration of 0.5% by weight. The PVC films (40 µm thickness) were irradiated at room temperature with ultraviolet (UV) light for up to 300 h. The changes in PVC films after irradiation were monitored by Fourier transform infrared spectroscopy, weight loss, viscosity-average molecular weight determination, and atomic force microscopy. These changes were very noticeable in the blank PVC films compared to the ones obtained when additives were used. The polyphosphates can inhibit the PVC photodegradation through direct absorption of UV light, interactions with PVC chains, and acting as radical scavengers.
Title: Polyphosphates as Inhibitors for Poly(vinyl Chloride) Photodegradation
Description:
Three polyphosphates were used as inhibitors for poly(vinyl chloride) (PVC) photodegradation.
The polyphosphates were added to PVC at a concentration of 0.
5% by weight.
The PVC films (40 µm thickness) were irradiated at room temperature with ultraviolet (UV) light for up to 300 h.
The changes in PVC films after irradiation were monitored by Fourier transform infrared spectroscopy, weight loss, viscosity-average molecular weight determination, and atomic force microscopy.
These changes were very noticeable in the blank PVC films compared to the ones obtained when additives were used.
The polyphosphates can inhibit the PVC photodegradation through direct absorption of UV light, interactions with PVC chains, and acting as radical scavengers.
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