Weight Loss Degradation of Hybrid Blends LLDPE/Starch/PVA upon Exposure to UV Light and Soil Burial

Poly bag and mulch films for agricultural field caused
pose environmental problem due to the non-degradable plastics
wastes upon disposal. Thus, a degradable poly bag was designed with
hybrid sago starch (SS) and polyvinyl alcohol (PVA). Two Different
blended compositions of SS and PVA hybrid have been compounded.
Then, the hybrids blended are mixed with linear line density
polyethylene (LLDPE) resin to fabricate poly bag film through
conventional film blowing process. Samples of LLDPE, SS and PVA
hybrid film were exposed to UV light and soil burial. The weight
losses were determined during degradation process. Hybrid film by
degradation of starch was found to hydrolyze and hydroxyl groups
decrease on esterification upon exposure to soil burial and uv
radiation. It was found out that, the hybrid film for 60% of SS
composition showed greatest degradation in soil and UV radiation.

• M. Rahmah
• Noor Zuhaira Abd Aziz
• M. Mohd Muizz Fahimi
• M. Farhan

• LLDPE
• PVA
• sago starch
• degradation
• soil burial
• UV radiation.

[1] Rahmah, M., Farhan, M., & Akidah, N. M. Y. (2013). Mechanical and
Thermal Properties of Hybrid Blends of LLDPE/Starch/PVA. Int. J.
Chem. Sci. Eng, 7(8), 1102-1106.
[2] Tang. X., Alavi, S., “Recent advances in starch, polyvinyl alcohol based
polymer blends, nanocomposites and their biodegradability” Carb
Polym, vol. 85, no.1, pp. 7-16, 2011.
[3] Thakore, I. M., Desai, S., Sarawade, B. D., & Devi, S. (2001). Studies
on biodegradability, morphology and thermomechanical properties of
LDPE/modified starch blends. European Polymer Journal, 37, 151–160.
[4] Rahmah, M., Farhan, M., &Akidah, N. M. Y. (2013). Mechanical and
Thermal Properties of Hybrid Blends of LLDPE/Starch/PVA. Int. J.
Chem. Sci. Eng,7(8), 1102-1106.
[5] Copinet, A., Bertrand, C., Govindin, S., Coma, V., & Couturier, Y.
(2004). Effects of ultraviolet light (315 nm), temperature and relative
humidity on the degradation of polylactic acid plastic films.
Chemosphere, 55(5), 763-773.
[6] Miltz, J., &Narkis, M. (1976). The effect of ultraviolet radiation on
chemically crosslinked low‐density polyethylene. Journal of Applied
Polymer Science, 20(6), 1627-1633.
[7] Mao, L., Imam, S., Gordon, S., Cinelli, P., &Chiellini, E. (2000).
Extruded cornstarch-glycerol-polyvinyl alcohol blends: mechanical
properties, morphology, and biodegradability. Journal of Polymers and
the Environment, 8(4), 205-211.