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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Sabetzadeh, Maryam Bagheri, Rouhollah Masoomi, Mahmood |
| Description | Country affiliation: Iran Author Affiliation: Sabetzadeh M ( Chemical Engineering Department, Polymer Group, Isfahan University of Technology, Isfahan 84156-83111, Iran.); Bagheri R ( Chemical Engineering Department, Polymer Group, Isfahan University of Technology, Isfahan 84156-83111, Iran. Electronic address: Bagheri@cc.iut.ac.ir.); Masoomi M ( Chemical Engineering Department, Polymer Group, Isfahan University of Technology, Isfahan 84156-83111, Iran.) |
| Abstract | In this work, low-density polyethylene/linear low-density polyethylene/thermoplastic starch (LDPE/LLDPE/TPS) films are prepared with the aim of obtaining environmentally friendly materials containing high TPS content with required packaging properties. Blending of LDPE/LLDPE (70/30 wt/wt) with 5-20 wt% of TPS and 3 wt% of PE-grafted maleic anhydride (PE-g-MA) is performed in a twin-screw extruder, followed by the blowing process. Differential scanning calorimetric results indicate starch has more pronounced effect on crystallization of LLDPE than LDPE. Scanning electron micrograph shows a fairly good dispersion of TPS in PE matrices. Fourier transfer infrared spectra confirm compatibility between polymers using PE-g-MA as the compatibilizer. Storage modulus, loss modulus and complex viscosity increase with incorporation of starch. Tensile strength and elongation-at-break decrease from 18 to 10.5 MPa and 340 to 200%, respectively when TPS increases from 5 to 20%. However, the required mechanical properties for packaging applications are attained when 15 wt% starch is added, as specified in ASTM D4635. Finally 12% increase in water uptake is achieved with inclusion of 15 wt% starch. |
| File Format | HTM / HTML |
| ISSN | 01448617 |
| Volume Number | 119 |
| e-ISSN | 18791344 |
| Journal | Carbohydrate Polymers |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2015-03-30 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Biochemistry__semicolon__materials Discipline Science Plastics Chemistry Polyethylene Starch Temperature Absorption, Physicochemical Calorimetry, Differential Scanning Elastic Modulus Microscopy, Electron, Scanning Spectroscopy, Fourier Transform Infrared Tensile Strength Viscosity Water Journal Article |
| Content Type | Text |
| Resource Type | Article |
| Subject | Organic Chemistry Materials Chemistry Polymers and Plastics |
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