Abstract—Thermoplastic Starch blend were obtained using urea plasticized starch and HDPE. The effect of plasticized starch (0 – 25 wt % TPS) on the Mechanical behavior of the thin sheet are discussed. The Performance of the sheet is explained on the basis of Mechanical, Structure and Surface Morphological and Biodegradable behavior of the blend. The TPS blend exhibit good Mechanical strength Particular 0 to 10 % TPS blend. After 10% batches there was a significant decrement change in Mechanical Response. Dynamic Mechanical Analysis (DMA) tests are carried out to investigate the viscoelastic deformation of HDPE / TPS Blends with different (0 to 25%) loading of Modified Starch particles. It has been observed that when HDPE filled with Thermoplastic Starch particles the stiffness decrease with increase of TPS content and very little change in Tg was obtained.The performance investigated due to the Strong compatible phage interaction between TPS and compatibilized HDPE matrix phage and plasticizer (urea). Urea brought out a optimization effect in deformation, retrogadation and change in physical, chemical, mechanical, thermal behavior of dry starch. The mechanical strength decreased proportionally with TPS Percentage increases. But Biodegradability performance increases with increasing percentage of TPS in the blend. This output is come out due to disintegration of TPS Structural Molecular Phase.
Index Terms—Biodegradation, DMA Plot, HDPE, SEM, Soil Burial Method, Thermoplastic Starch Blends.
K.S.K.Rao Patnaik is with the Department of Chemical Engineering, University College of Technology (A), Osmania University, Hyderabad –500 007, India Corresponding author: Fax No: 91- 40 – 27098472 Email:ksk_raopatnaik@yahoo.co.in
K. Sirisha Devi and V.Kiran Kumar, Technical officers are Working inthe ( Testing ) Central Institute of Plastic Engineering and Technology(CIPET), Hyderabad. Email: sirisha_kongala@yahoo.com
K. Sriharsha is with the Department of Mechanical Engineering, CBIT,Osmaina University, Gandipet, Hyderabad--500 075, India.
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Cite: K. S. K. Rao Patnaik, K. Sirisha Devi, V. Kiran Kumar, and K. Sri Harsha, "Biodegradability Behavior on Sorbitol Modified StarchBlended with HDPE," International Journal of Chemical Engineering and Applications vol. 2, no. 4, pp. 248-251, 2011.
