Interactions, structure and properties in poly(lactic acid)/thermoplastic polymer blends
Blends were prepared from poly(lactic acid) (PLA) and three thermoplastics, polystyrene (PS), polycarbonate (PC) and poly(methyl methacrylate) (PMMA). Rheological and mechanical properties, structure and component interactions were determined by various methods. The results showed that the structure...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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Budapest University of Technology
2014-01-01
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| Series: | eXPRESS Polymer Letters |
| Subjects: | |
| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0004619&mi=cd |
| _version_ | 1818145534127374336 |
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| author | B. Imre K. Renner B. Pukanszky |
| author_facet | B. Imre K. Renner B. Pukanszky |
| author_sort | B. Imre |
| collection | DOAJ |
| description | Blends were prepared from poly(lactic acid) (PLA) and three thermoplastics, polystyrene (PS), polycarbonate (PC) and poly(methyl methacrylate) (PMMA). Rheological and mechanical properties, structure and component interactions were determined by various methods. The results showed that the structure and properties of the blends cover a relatively wide range. All three blends have heterogeneous structure, but the size of the dispersed particles differs by an order of magnitude indicating dissimilar interactions for the corresponding pairs. Properties change accordingly, the blend containing the smallest dispersed particles has the largest tensile strength, while PLA/PS blends with the coarsest structure have the smallest. The latter blends are also very brittle. Component interactions were estimated by four different methods, the determination of the size of the dispersed particles, the calculation of the Flory-Huggins interaction parameter from solvent absorption, from solubility parameters, and by the quantitative evaluation of the composition dependence of tensile strength. All approaches led to the same result indicating strong interaction for the PLA/PMMA pair and weak for PLA and PS. A general correlation was established between interactions and the mechanical properties of the blends. |
| first_indexed | 2024-12-11T12:04:59Z |
| format | Article |
| id | doaj.art-1db4ecdf2fbc4236825c94d083ddceb8 |
| institution | Directory Open Access Journal |
| issn | 1788-618X |
| language | English |
| last_indexed | 2024-12-11T12:04:59Z |
| publishDate | 2014-01-01 |
| publisher | Budapest University of Technology |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj.art-1db4ecdf2fbc4236825c94d083ddceb82022-12-22T01:07:58ZengBudapest University of TechnologyeXPRESS Polymer Letters1788-618X2014-01-018121410.3144/expresspolymlett.2014.2Interactions, structure and properties in poly(lactic acid)/thermoplastic polymer blendsB. ImreK. RennerB. PukanszkyBlends were prepared from poly(lactic acid) (PLA) and three thermoplastics, polystyrene (PS), polycarbonate (PC) and poly(methyl methacrylate) (PMMA). Rheological and mechanical properties, structure and component interactions were determined by various methods. The results showed that the structure and properties of the blends cover a relatively wide range. All three blends have heterogeneous structure, but the size of the dispersed particles differs by an order of magnitude indicating dissimilar interactions for the corresponding pairs. Properties change accordingly, the blend containing the smallest dispersed particles has the largest tensile strength, while PLA/PS blends with the coarsest structure have the smallest. The latter blends are also very brittle. Component interactions were estimated by four different methods, the determination of the size of the dispersed particles, the calculation of the Flory-Huggins interaction parameter from solvent absorption, from solubility parameters, and by the quantitative evaluation of the composition dependence of tensile strength. All approaches led to the same result indicating strong interaction for the PLA/PMMA pair and weak for PLA and PS. A general correlation was established between interactions and the mechanical properties of the blends.http://www.expresspolymlett.com/letolt.php?file=EPL-0004619&mi=cdPolymer blends and alloysPoly(lactic acid)Dispersed structureMiscibilityStructure-property correlation |
| spellingShingle | B. Imre K. Renner B. Pukanszky Interactions, structure and properties in poly(lactic acid)/thermoplastic polymer blends eXPRESS Polymer Letters Polymer blends and alloys Poly(lactic acid) Dispersed structure Miscibility Structure-property correlation |
| title | Interactions, structure and properties in poly(lactic acid)/thermoplastic polymer blends |
| title_full | Interactions, structure and properties in poly(lactic acid)/thermoplastic polymer blends |
| title_fullStr | Interactions, structure and properties in poly(lactic acid)/thermoplastic polymer blends |
| title_full_unstemmed | Interactions, structure and properties in poly(lactic acid)/thermoplastic polymer blends |
| title_short | Interactions, structure and properties in poly(lactic acid)/thermoplastic polymer blends |
| title_sort | interactions structure and properties in poly lactic acid thermoplastic polymer blends |
| topic | Polymer blends and alloys Poly(lactic acid) Dispersed structure Miscibility Structure-property correlation |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0004619&mi=cd |
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