Article
Interaction-structure-property relationships in amorphous polymer blends
Department of Plastics and Rubber Technology, Technical University of Budapest, P.O. Box 92, 1521 Budapest, Hungary HU
Polymer Bulletin (impact factor:
1.53).
01/2000;
44(4):363-370.
DOI:10.1007/s002890070085
pp.363-370
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Citations (0)
- Cited In (2)
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Article: Compatibility and mechanical properties of blends of polystyrene with biodegradable polyesters
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ABSTRACT: Biodegradable polyesters allow the development of acceptable bio-composites and bio-blends from agricultural-based raw materials without impairing their biodegradability and other useful properties. The tensile properties of binary blends of polystyrene (PS) with the biodegradable polyesters polycaprolactone (PCL), d,l-polylactic acid (PLA), and Eastar Bio Ultra (EBU) were investigated. Blend composition ranging from pure PS to pure biodegradable polyester, in 25% increments, were compounded, injection molded, and used in tensile tests, from which the following tensile properties were calculated: yield stress, yield strain, and modulus. In general, the tensile properties of the PS/biodegradable polyester blends were found to be between the values of the corresponding pure components. Comparison of the yield stress and modulus of the blends with 25% PS showed these properties decreasing in the order: PLA/PS>PCL/PS>EBU/PS, which is the exact opposite of the reported trend in the interfacial tensions of these blends. This implies a correlation between tensile and interfacial properties that is consistent with expectations. However, the data also showed the yield strain and modulus of the pure biodegradable polyesters decreasing in the order: PLA>PCL>EBU, which is identical to the observation on the blends with 25% PS. Thus, the observed trend in the tensile properties could also be due to a contribution from the bulk properties of the biodegradable polyesters.Composites Part A: Applied Science and Manufacturing. -
Article: Morphology, miscibility and mechanical properties of PMMA/PC blends
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ABSTRACT: This study deals with some results on morphology, miscibility and mechanical properties for polymethyl methacrylate/polycarbonate (PMMA/PC) polymer blends prepared by solution casting method at different concentration between 0 and 100 wt%. Dynamic storage modulus and tan δ were measured in a temperature range from 30 to 180°C using dynamical mechanical analyzer (DMA). The value of the storage modulus was found to increase with the addition of the PC in the matrix. Transition temperature of pure PMMA and pure PC is found to be 83.8 and 150°C, respectively. The result shows that the two polymers are miscible for whole concentration of PC in PMMA. The distribution of the phases in the blends was studied through scanning electron microscopy (SEM). Also the mechanical properties like elongation at break and fracture energy of the PMMA/PC blends increase with the increase in concentration of PC in PMMA.Phase Transitions 12/2009; 82(12):866-878. · 1.01 Impact Factor
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Keywords
characterization
different techniques
DSC
entire composition range
Good correlation
Hildebrand solubility parameters
Miscibility
polymer/polymer interaction
polyphenylene oxide
polystyrene
property relationships
styrene-acrylonitrile copolymer
tensile test
various polymer pairs
χ-related quantities