Study on the structure and properties of nanocomposites based on high-density polyethylene/starch blends
作者： Alireza Sharif , Jamal Aalaie , Homeira Shariatpanahi , Homayoon Hosseinkhanli , Alireza Khoshniyat
DOI: 10.1007/S10965-011-9603-9
关键词: Nanocomposite 、 Thermoplastic 、 Scanning electron microscope 、 Materials science 、 Composite material 、 Ultimate tensile strength 、 High-density polyethylene 、 Thermal stability 、 Polymer 、 Thermal decomposition 、 Materials Chemistry 、 Polymers and Plastics 、 Organic chemistry
摘要: The effects of nanoclay on the structure and final properties high density polyethylene (HDPE)/thermoplastic starch (TPS) blends were investigated. Neat as well containing samples prepared by melt blending in an internal mixer. Also, a poly (ethylene-g-maleic anhydride) (PE-g-MA) copolymer was used compatibilizer some formulations. Nanocomposites with intercalated structures obtained lacking compatibilizer, based rheological, X-ray diffraction (XRD) transmission electron microscopy (TEM) results. However, silicate layers nearly exfoliated presence compatibilizer. located preferably HDPE matrix at interface TPS dispersed phase. ability nanoclays decreasing average size phase confirmed scanning (SEM) observations. Furthermore, thermo-gravimetric analysis (TGA) showed that could enhance thermal stability samples. It seems performed insulator mass transport barrier to small molecules generated during decomposition, assisted formation char after decomposition polymer matrix. All possessed higher tensile strength elongation break, but lower modulus, compared corresponding un-compatibilized Finally, incorporation found be favor developing nanocomposites biodegradability evidenced through biodegradation test fungi water uptake experiments.
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