JBM  Vol.6 No.2 , February 2018
Characterization of Radiation Prepared Copolymer and Studies of Their Biodegradability
Abstract: Blends of biodegradable copolymer based on starch, poly lactic acid (PLA), poly vinyl alcohol (PVA) and natural rubber (NR) have been prepared. Gamma radiation induced synthesis and modification of polymer hydrogel was studied. The polymer blends have been chemically surface modified by glycerol. The modified polymer blends have been investigated for swelling ratio, tensile strength and 9 scanning electron microscopy. The swelling ratio of polymer blends increased significantly after surface modification with glycerol. The swelling of polymer was decreased as a function of (NR) content in polymer blends. The gel fraction (PVA-starch-PLA) and (PVA-starch-NR) blends increased by increasing the radiation doses (kGy) to reach the maximum amount of (~99%) and (~88.2%), respectively. Addition of 2.5% (PLA) led to greater increase of the swelling ratio than 10% (NR) to blends and the maximum swelling was found at dose (5 kGy). At concentration of glycerol (5.0% w/w), tensile strength decreased and elongation at break % increased. The polymers degrading microorganisms were isolated from soil samples. The degradation ability of the microbial isolates for each polymeric material was tested on agar plates. Among these isolates, the most efficient degrader isolates for prepared blends in MSM shaking flasks were selected and the degradation was confirmed by scanning electron microscopy.
Cite this paper: Maziad, N. , El-Deen Abd El-Aziz, A. , El-Hamouly, S. , Abd El-Aziz Mahmoud El-Hashish, M. , Rizk, S. and Nasef, N. (2018) Characterization of Radiation Prepared Copolymer and Studies of Their Biodegradability. Journal of Biosciences and Medicines, 6, 33-56. doi: 10.4236/jbm.2018.62004.

[1]   Elnashar, D.E. and Yehia, A.A. (2005) Effect of Maleic Anhydride on the Physico-Mechanical Properties of NR/PE Blends. Arab International Conference on Polymer Science & Technology, Cairo, 27-30 November 2005, 1-15.

[2]   Goliath, S. and Reho, O. (2012) Characterization of Montmorillonite on Polyvinyl Alcohol-Starch Compound. A Thesis.

[3]   Rohana Yahya, Y.S., Azura, A.R. and Ahmad, Z. (2011) Effect of Curing Systems on Thermal Degradation. Behaviour of Natural Rubber (SMR CV 60). Journal of Physical Science, 22, 1-14.

[4]   Shogrena, R.L., Doaneb, W.M., Garlottaa, D., Lawtona, J.W. and Willetta, J.L. (2003) Biodegradation of Starch/Polylactic Acid/Poly(hydroxyester-ether) Composite Bars in Soil. Polymer Degradation and Stability, 79, 405-411.

[5]   Lipsa, R., Tudorachi, N. and Vasile, C. (2008) Poly(vinyl alcohol)/Poly(lactic acid) Blends Biodegradable Films Doped with Colloidal Silver. Revue Roumaine De Chimie, 53, 405-413.

[6]   Giita Silverajah, V.S., Ibrahim, N.A., Zainuddin, N., Wan Yunus, W.Z. and Abu Hassan, H. (2012) Mechanical, Thermal and Morphological Properties of Poly(lactic acid)/Epoxidized Palm Olein Blend. Molecules, 17, 11729-11747.

[7]   Sáha, P., Sedlarík, V. and Czech Republic, Z. (2010) Advanced Packaging for Food and Pharmaceutical Applications Based on Ater-Soluble Polymer. Doctoral Thesis.

[8]   Gutiérrez, T.J., Morales, N.J., Pérez, E., Tapia, M.S. and Fame, L. (2015) Physico-Chemical Properties of Edible Films Derived from Native and Phosphated Cush-Cush Yam and Cassava Starches. Food Packaging and Shelf Life, 3, 1-8.

[9]   Shi, R., Bi, J., Zhang, Z., Zhu, A., Chen, D., Zhou, X., Zhang, L. and Tian, W. (2008) The Effect of Citric Acid on the Structural Properties and Cytotoxicity of the Polyvinyl Alcohol/Starch Films When Molding at High Temperature. Carbohydrate Polymers, 74, 763-770.

[10]   Pokhrel, S. (2015) A Review on Introduction and Applications of Starch and Its Biodegradable Polymers. International Journal of Environment, 4, 114-125.

[11]   Delville, J., Joly, C., Dole, P. and Bliard, C. (2002) Solid State Photocrosslinked Starch Based Films: A New Family of Homogeneous Modified Starches. Journal of Carbohydrate Polymer, 49, 71-81.

[12]   Nawapat, D. and Thawien, W. (2013) Effect of UV-Treatment on the Properties of Biodegradable Rice Starch Films. International Food Research Journal, 20, 1313-1322.

[13]   Mohammad, S., Behrouz, H. and Korush, M. (2011) Design a Biodegradable Hydrogel for Drug Delivery System. World Academy of Science Engineering and Technology, 52, 421-423.

[14]   Muhammed, S.L., Sapuan, S.M., Jawaid, M., Ishak, M.R. and Sahari, J. (2015) Effect of Plasticizer Type and Concentration on Tensile, Thermal and Barrier Properties of Biodegradable Films Based on Sugar Palm (Arenga pinnata) Starch. Polymers, 7, 1106-1124.

[15]   Moubasher, A. (1993) Soil Fungi in Qatar and Other Arab Countries. The Center for Scientific and Applied Research, University of Qatar, Doha.

[16]   Sabato, S., Ouattara, B., Yu, H., D’Aprano, G., Le, C. and Mateescu, T.M. (2001) Mechanical and Barrier Properties of Cross-Linked Soy and Whey Protein Based Films. Journal of Agricultural Food Chemistry, 49, 1397-1403.

[17]   Nampitch, T. and Magaraphan, R. (2010) Scientific Research. International Food Research Journal, 3, 388-391.

[18]   Ali, H.E. (2010) Modification of Edible Food Packaging Materials Based on Natural Polymer Blends by Ionizing Radiation. Thesis.

[19]   Muhammad, H., Nazar, M.R., Muhammad, H.S., Jahanzaib, M., Rabia, I.Y., Ahmad, K. and Muhammad Pak, Z.U.H. (2011) Preparation, Characterization and Release of Verapmil Hydrochloride from Polycaprolactone/Acrylic Acid (PCL/AA) Hydrogels. Journal of Pharmaceutical Sciences, 24, 503-511.

[20]   Riyajan, S. and Sukhlaaied, W. (2012) Elastomere Und Kunststoffe. Elastomers and Plastics, 9, 30-34.

[21]   Wittaya, T. (2013) Influence of Type and Concentration of Plasticizers on the Properties of Edible Film from Mung Bean Proteins. KMITL Science and Technology Journal, 13, 17-25.

[22]   Ibrahim, S.M. (2011) Structure-Property Behavior of Electron Beam Irradiated Plasticized Poly(vinyl alcohol)/Gum Arabic Polymer Blend. Journal of Radiation Research and Applied Sciences, 4, 95-111.

[23]   Nishaa, S., Vishnupriya, M., Sasikumar, J.M., Hephzibah, P. and Christabel, G.V.K. (2012) Antioxidant Activity of Ethanolic Extract of Marantaarund inacea L. Tuberous Rhizomes. Asian Journal of Pharmaceutical and Clinical Research, 5, 974-2441.

[24]   Detyothin, S. (2012) Production and Characterization of Thermoplastic Cassava Starch, Functionalized Poly (Lactic Acid), and Their Reactive Ompatibilized Blends. Thesis.

[25]   Bhatia, A., Gupta, R.K., Bhattacharya, S.N. and Choi, H.J. (2007) Compatibility of Biodegradable Poly (Lactic Acid) (PLA) and Poly (Butylene Succinate) (PBS) Blends for Packaging Application. Korea-Australia Rheology Journal, 19, 125-131.

[26]   Jecu, L., Grosu, E., Raut, I., Ghiurea, M., Constantin, M., Stoica, A. and Stroescu, M. (2012) Fungal Degradation of Polymeric Materials: Morphological Aspects. Gelu Vasilescu, 5, 1-9.

[27]   McHugh, T.H. and Krochta, J.M. (1994) Sorbitol-vs. Glycerol-Plasticized Whey Protein Edible Films: Integrated Oxygen Permeability and Tensile Property Evaluation. Journal of Agricultural Food Chemistry, 42, 841-845.

[28]   Karande, R.D., Abitha, V.K., Rane, A. and Mishra, R.K. (2015) Preparation of Polylactide from Synthesized Lactic Acid and Effect of Reaction Parameters on Conversion. Journal of Materials Science and Engineering with Advanced Technology, 12, 1-37.

[29]   Noori, F.T.M. and Ali, N.A. (2014) Study the Mechanical and Thermal Properties of Biodegradable Polylacticacid/Poly Ethylene Glycol Nanocomposites. International Journal of Application or Innovation in Engineering & Management, 3, 8-16.

[30]   Srinivasa, P.C., Ramesh, M.N., Kumar, K.R. and Tharanathan, R.N. (2003) Properties and Sorption Studies of Chitosan-Polyvinyl Alcohol Blend Films. Carbohydrate Polymers, 53, 431-438.

[31]   Tanase, E.E., Popa, M.E., Rapa, M. and Popa, O. (2015) Preparation and Characterization of Biopolymer Blends Based on Polyvinyl Alcohol and Starch. Romanian Biotechnological Letters, 20, 10306-10315.

[32]   Juby, K.A., Dwivedi, C., Manmohan, K., Swathi, K., Misra, H.S. and Bajaj, P.N. (2012) Silver Nanoparticle-Loaded PVA/Gum Acacia Hydrogel: Synthesis, Characterization and Antibacterial Study. Carbohydrate Polymers, 89, 906-913.

[33]   Ram, V.R., Mithu, D., Rintu, B. and Anil K. (2012) Comparative Studies on Crosslinked and Uncrosslinked Natural Rubber Biodegradation by Pseudomonas sp. Bioresource Technology, 97, 2485-2488.

[34]   Shafik, S.S., Majeed, K.J. and Kamil, M.I. (2014) Preparation of PVA/Corn Starch Blend Films and Studying the Influence of Gamma Irradiation on Mechanical Properties. International Journal of Materials Science and Applications, 3, 25-28.