Tuning the processability, morphology and biodegradability of clay incorporated PLA/LLDPE blends via selective localization of nanoclay induced by melt mixing sequence
Polylactic acid (PLA)/linear low density polyethylene (LLDPE) blend nanocomposites based on two different commercial-grade nanoclays, Cloisite® 30B and Cloisite® 15A, were produced via different melt mixing procedures in a counter-rotating twin screw extruder. The effects of mixing...
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| Format: | Article |
| Language: | English |
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Budapest University of Technology
2013-01-01
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| Series: | eXPRESS Polymer Letters |
| Subjects: | |
| Online Access: | http://www.expresspolymlett.com/letolt.php?file=EPL-0003726&mi=cd |
| _version_ | 1819085525621932032 |
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| author | S. H. Jafari L. As'habi H. A. Khonakdar R. Boldt U. Wagenknecht G. Heinrich |
| author_facet | S. H. Jafari L. As'habi H. A. Khonakdar R. Boldt U. Wagenknecht G. Heinrich |
| author_sort | S. H. Jafari |
| collection | DOAJ |
| description | Polylactic acid (PLA)/linear low density polyethylene (LLDPE) blend nanocomposites based on two different commercial-grade nanoclays, Cloisite® 30B and Cloisite® 15A, were produced via different melt mixing procedures in a counter-rotating twin screw extruder. The effects of mixing sequence and clay type on morphological and rheological behaviors as well as degradation properties of the blends were investigated. The X-ray diffraction (XRD) results showed that generally the level of exfoliation in 30B based nanocomposites was better than 15A based nanocomposites. In addition, due to difference in hydrophilicity and kind of modifiers in these two clays, the effect of 30B on refinement of dispersed phase and enhancement of biodegradability of PLA/LLDPE blend was much more remarkable than that of 15A nanoclay. Unlike the one step mixing process, preparation of nanocomposites via a two steps mixing process improved the morphology. Based on the XRD and TEM (transmission electron microscopic) results, it is found that the mixing sequence has a remarkable influence on dispersion and localization of the major part of 30B nanoclay in the PLA matrix. Owing to the induced selective localization of nanoclays in PLA phase, the nanocomposites prepared through a two steps mixing sequence exhibited extraordinary biodegradability, refiner morphology and better melt elasticity. |
| first_indexed | 2024-12-21T21:05:45Z |
| format | Article |
| id | doaj.art-019f756e5d5b42779c0eccefc412e1fa |
| institution | Directory Open Access Journal |
| issn | 1788-618X |
| language | English |
| last_indexed | 2024-12-21T21:05:45Z |
| publishDate | 2013-01-01 |
| publisher | Budapest University of Technology |
| record_format | Article |
| series | eXPRESS Polymer Letters |
| spelling | doaj.art-019f756e5d5b42779c0eccefc412e1fa2022-12-21T18:50:17ZengBudapest University of TechnologyeXPRESS Polymer Letters1788-618X2013-01-0171213910.3144/expresspolymlett.2013.3Tuning the processability, morphology and biodegradability of clay incorporated PLA/LLDPE blends via selective localization of nanoclay induced by melt mixing sequenceS. H. JafariL. As'habiH. A. KhonakdarR. BoldtU. WagenknechtG. HeinrichPolylactic acid (PLA)/linear low density polyethylene (LLDPE) blend nanocomposites based on two different commercial-grade nanoclays, Cloisite® 30B and Cloisite® 15A, were produced via different melt mixing procedures in a counter-rotating twin screw extruder. The effects of mixing sequence and clay type on morphological and rheological behaviors as well as degradation properties of the blends were investigated. The X-ray diffraction (XRD) results showed that generally the level of exfoliation in 30B based nanocomposites was better than 15A based nanocomposites. In addition, due to difference in hydrophilicity and kind of modifiers in these two clays, the effect of 30B on refinement of dispersed phase and enhancement of biodegradability of PLA/LLDPE blend was much more remarkable than that of 15A nanoclay. Unlike the one step mixing process, preparation of nanocomposites via a two steps mixing process improved the morphology. Based on the XRD and TEM (transmission electron microscopic) results, it is found that the mixing sequence has a remarkable influence on dispersion and localization of the major part of 30B nanoclay in the PLA matrix. Owing to the induced selective localization of nanoclays in PLA phase, the nanocomposites prepared through a two steps mixing sequence exhibited extraordinary biodegradability, refiner morphology and better melt elasticity.http://www.expresspolymlett.com/letolt.php?file=EPL-0003726&mi=cdBiodegradable polymersMixing methodsPolylactic acidNanocomposites |
| spellingShingle | S. H. Jafari L. As'habi H. A. Khonakdar R. Boldt U. Wagenknecht G. Heinrich Tuning the processability, morphology and biodegradability of clay incorporated PLA/LLDPE blends via selective localization of nanoclay induced by melt mixing sequence eXPRESS Polymer Letters Biodegradable polymers Mixing methods Polylactic acid Nanocomposites |
| title | Tuning the processability, morphology and biodegradability of clay incorporated PLA/LLDPE blends via selective localization of nanoclay induced by melt mixing sequence |
| title_full | Tuning the processability, morphology and biodegradability of clay incorporated PLA/LLDPE blends via selective localization of nanoclay induced by melt mixing sequence |
| title_fullStr | Tuning the processability, morphology and biodegradability of clay incorporated PLA/LLDPE blends via selective localization of nanoclay induced by melt mixing sequence |
| title_full_unstemmed | Tuning the processability, morphology and biodegradability of clay incorporated PLA/LLDPE blends via selective localization of nanoclay induced by melt mixing sequence |
| title_short | Tuning the processability, morphology and biodegradability of clay incorporated PLA/LLDPE blends via selective localization of nanoclay induced by melt mixing sequence |
| title_sort | tuning the processability morphology and biodegradability of clay incorporated pla lldpe blends via selective localization of nanoclay induced by melt mixing sequence |
| topic | Biodegradable polymers Mixing methods Polylactic acid Nanocomposites |
| url | http://www.expresspolymlett.com/letolt.php?file=EPL-0003726&mi=cd |
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