The final publication is available at Springer via http://dx.doi.org/10.1007/s10853-014-8647-8[EN] Green polyethylene is a new and attracting polymer from biobased resources (sugarcane) and identical properties to petroleum-based polyethylene. Its potential in the packaging industry is really promising. In this work, we report the use of different compatibilizer systems for green polyethylene (from sugarcane) and thermoplastic starch (30 wt% TPS) in order to increase ductile mechanical properties and biodegradable content. Typical petroleum-based graft copolymer of polyethylene with maleic anhydride (PE-g-MA) is used as reference compatibilizer, and new compatibilizer systems are developed using sepiolite. The obtained results show that sepiolite-based compatibilizers provide good compatibilization properties as observed by a remarkable increase in elongation at break and a noticeable size reduction of the TPS domains dispersed in the green polyethylene matrix as observed by scanning electron microscopy (SEM).This study has been funded by the ‘‘Conselleria d’Educacio´, Cultura i Esport’’—Generalitat Valenciana (Reference number: GV/2014/008). Authors thank Tolsa S.A for kindly supply sepiolite for this study and Microscopy Services at UPV for helping in using SEM and TEM techniques.Samper Madrigal, MD.; Fenollar Gimeno, OÁ.; Dominici, F.; Balart Gimeno, RA.; Kenny, JM. (2015). The effect of sepiolite on the compatibilization of polyethylene thermoplastic starch blends for environmentally friendly films. Journal of Materials Science. 50(2):863-872. https://doi.org/10.1007/s10853-014-8647-8S863872502Alvarenga RAF, Dewulf J (2013) Plastic vs. fuel: Which use of the Brazilian ethanol Can bring more environmental gains? Renew Energ 59:49–52Kikuchi Y, Hirao M, Narita K, Sugiyama E, Oliveira S, Chapman S, Arakaki MM, Cappra CM (2013) Environmental performance of biomass-derived chemical production: a case study on sugarcane-derived polyethylene. J Chem Eng Jpn 46:319–325Liptow C, Tillman A-M (2012) A comparative Life Cycle Assessment Study of polyethylene based on sugarcane and crude oil. J Ind Ecol 16:420–435Taghizadeh A, Sarazin P, Favis BD (2013) High molecular weight plasticizers in thermoplastic starch/polyethylene blends. J Mater Sci 48:1799–1811. doi: 10.1007/s10853-012-6943-8Park HM, Lee WK, Park CY, Cho WJ, Ha CS (2003) Environmentally friendly polymer hybrids—Part I—Mechanical, thermal, and barrier properties of thermoplastic starch/clay nanocomposites. J Mater Sci 38:909–915. doi: 10.1023/A:1022308705231Pimentel TAPF, Duraes JA, Drummond AL, Schlemmer D, Falcao R, Araujo Sales MJ (2007) Preparation and characterization of blends of recycled polystyrene with cassava starch. J Mater Sci 42:7530–7536. doi: 10.1007/s10853-007-1622-xRosa DS, Guedes CGF, Carvalho CL (2007) Processing and thermal, mechanical and morphological characterization of post-consumer polyolefins/thermoplastic starch blends. J Mater Sci 42:551–557. doi: 10.1007/s10853-006-1049-9Kaseem M, Hamad K, Deri F (2012) Thermoplastic starch blends: a review of recent works. Polym Sci Ser A 54:165–176Nafchi AM, Moradpour M, Saeidi M, Alias AK (2013) Thermoplastic starches: properties, challenges, and prospects. Starch-Starke 65:61–72Jimenez A, Jose Fabra M, Talens P, Chiralt A (2012) Edible and biodegradable starch films: a review. Food Bioprocess Tech 5:2058–2076Bikiaris D, Panayiotou C (1998) LDPE/starch blends compatibilized with PE-g-MA copolymers. J Appl Polym Sci 70:1503–1521Liu W, Wang YJ, Sun Z (2003) Effects of polyethylene-grafted maleic anhydride (PE-g-MA) on thermal properties, morphology, and tensile properties of low-density polyethylene (LDPE) and corn starch blends. J Appl Polym Sci 88:2904–2911Pedroso AG, Rosa DS (2005) Mechanical, thermal and morphological characterization of recycled LDPE/corn starch blends. Carbohyd Polym 59:1–9Rodriguez-Gonzalez FJ, Ramsay BA, Favis BD (2003) High performance LDPE/thermoplastic starch blends: a sustainable alternative to pure polyethylene. Polymer 44:1517–1526Yang L, Liu W (2010) Effects of functional groups of starch on asa emulsification and sizing. In: Sun RC, Fu SY (eds) Research progress in paper industry and biorefinery. China University of Technology Press, Guangzhou, pp 1936–1939Kapusniak J, Jochym K, Bajer K, Bajer D (2011) Review of methods for chemical modification of starch. Przem Chem 90:1521–1526Ren L, Jiang M, Tong J, Bai X, Dong X, Zhou J (2010) Influence of surface esterification with alkenyl succinic anhydrides on mechanical properties of corn starch films. Carbohyd Polym 82:1010–1013Cunha AG, Gandini A (2010) Turning polysaccharides into hydrophobic materials: a critical review. Part 2. Hemicelluloses, chitin/chitosan, starch, pectin and alginates. Cellulose 17:1045–1065Bhattacharya M (1998) Stress relaxation of starch synthetic polymer blends. J Mater Sci 33:4131–4139. doi: 10.1023/A:1004449002240Sam ST, Ismail H, Ahmad Z (2011) Soil burial of polyethylene-g-(maleic anhydride) compatibilised LLDPE/soya powder blends. Polym-Plast Technol 50:851–861Majid RA, Ismail H, Taib RM (2009) Effects of PE-g-MA on tensile properties, morphology and water absorption of LDPE/thermoplastic sago starch blends. Polym-Plast Technol 48:919–924Kahar M, Wahab A, Ismail H, Othman N (2012) Compatibilization effects of PE-g-MA on mechanical, thermal and swelling properties of high density polyethylene/natural rubber/thermoplastic tapioca starch blends. Polym-Plast Technol 51:298–303Xu Y, Thurber CM, Lodge TP, Hillmyer MA (2012) Synthesis and remarkable efficacy of model polyethylene-graft-poly(methyl methacrylate) copolymers as compatibilizers in polyethylene/poly(methyl methacrylate) blends. Macromolecules 45:9604–9610Wang N, Yu J, Ma X, Wu Y (2007) The influence of citric acid on the properties of thermoplastic starch/linear low-density polyethylene blends. Carbohyd Polym 67:446–453Kim JP, Yoon TH, Mun SP, Rhee JM, Lee JS (2006) Wood-polyethylene composites using ethylene-vinyl alcohol copolymer as adhesion promoter. Bioresource Technol 97:494–499Choudhury A, Mukherjee M, Adhikari B (2006) Recycling of polyethylene/nylon 6 based waste oil pouches using compatibilizer. Indian J Chem Techn 13:233–241Galan E (1996) Properties and applications of palygorskite-sepiolite clays. Clay Miner 31:443–453Wan C, Chen B (2011) Synthesis and characterization of biomimetic hydroxyapatite/sepiolite nanocomposites. Nanoscale 3:693–700Sarifuddin N, Ismail H, Ahmad Z (2014) Influence of halloysite nanotubes hybridized with kenaf core fibers on the physical and mechanical properties of low density polyethylene/thermoplastic sago starch blends. Polym-Plast Technol 53:107–115Scaffaro R, Botta L, Mistretta MC, La Mantia FP (2013) Processing—morphology—property relationships of polyamide 6/polyethylene blend-clay nanocomposites. Express Polym Lett 7:873–884Sarifuddin N, Ismail H (2013) Comparative study on the effect of bentonite or feldspar filled low-density polyethylene/thermoplastic sago starch/kenaf core fiber composites. Bioresources 8:4238–4257Nunez K, Rosales C, Perera R, Villarreal N, Pastor JM (2012) Poly(lactic acid)/low-density polyethylene blends and its nanocomposites based on sepiolite. Polym Eng Sci 52:988–1004Sangerano M, Pallaro E, Roppolo I, Rizza G (2009) UV-cured epoxy coating reinforced with sepiolite as inorganic filler. J Mater Sci 44:3165–3171. doi: 10.1007/s10853-009-3421-zShafiq M, Yasin T, Saeed S (2012) Synthesis and characterization of linear low-density polyethylene/sepiolite nanocomposites. J Appl Polym Sci 123:1718–1723Mir S, Yasin T, Halley PJ, Siddiqi HM, Ozdemir O, Anh N (2013) Thermal and rheological effects of sepiolite in linear low-density polyethylene/starch blend. J Appl Polym Sci 127:1330–1337Kanmani P, Rhim J-W (2014) Physical, mechanical and antimicrobial properties of gelatin based active nanocomposite films containing AgNPs and nanoclay. Food Hydrocolloid 35:644–652Olmo N, Lizarbe MA, Gavilanes JG (1987) Biocompatibility and degradability of sepiolite collagen complex. Biomaterials 8:67–69Mortazavi S, Ghasemi I, Oromiehie A (2013) Effect of phase inversion on the physical and mechanical properties of low density polyethylene/thermoplastic starch. Polym Test 32:482–491Pang M-M, Pun M-Y, Ishak ZAM (2013) Degradation studies during water absorption, aerobic biodegradation, and soil burial of biobased thermoplastic starch from agricultural waste/polypropylene blends. J Appl Polym Sci 129:3656–366
