Poly(Vinyl Chloride) Containing <i>Gynostemma pentaphyllum</i> as a Photostabilizer

Abstract

Novel extracted natural stabilizer for the polymer was investigated in this study. The natural anti-aging was extracted from plants and it is demonstrated that this type of stabilizers are suitable for biodegradable polymers. Gynostemma pentaphyllum (0.01–0.03 wt%) were extracted and added to the poly(vinyl chloride) blend. The achieved polymeric films were exposed to an accelerated UV light aging process for 300 hours at ambient temperature. The efficiency of tested natural stabilizer was linked to blank PVC films. FTIR spectroscopy, weight loss, electronic microscope and scanning electron microscopy were performed. Using small amount of natural stabilizer is significantly beneficial because it does not influence the PVC properties.

A Comparative Study of the Photostabilization of Polyvinyl Chloride with Nano and Micro Nickel Oxide

“…7-9, the values of the carbonyl ICO coefficients increase as the number of irradiation increases from 0-300 min. For all films but ICO decreases with additive more as compared with standard PVC film the fact that the increase for the majority of the additives was lower in comparison to the increase for the pure polyvinyl chloride films suggests that these additives served as optical stabilizers, which lowered the photolysis rate of the polymer 36 . Experimenting with a wide variety of combinations of nano and micro oxides in a variety of weight ratios led to the identification of the optimal weight ratio, which resulted in the lowest ICO this was accomplished by determining which weight ratio produced the lowest ICO.…”

Effecient Photo-Stabilizers: By Using Medications As Ligands Connected to Oragontin(IV) Complexes

“…This degradation happens when the polymer exposure to UV light under 200 nm [16]. The photo-degradation sometimes leads to the cleavage of polymer chains or makes crosslinking within the polymer chains look Scheme 1 below [17][18][19][20]. Scheme 1.…”

The usage of lignin in two significant applications: As adsorbent surface of water pollutants and antioxidant of plastic polymers: short review

“…Therefor researchers have used different approach to stabilize these polymers and reduce their degradation [50][51][52][53][54][55][56]. The most common method is by using natural or synthesized chemicals as thermal-stabilizers, antioxidants or photo-stabilizers [57][58][59][60].…”