| Download | - View accepted manuscript: Extrusion foaming of poly(lactic acid) blown with CO₂ : Toward 100% green material (PDF, 1.9 MiB)
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| Author | Search for: Reignier, Joël1; Search for: Gendron, Richard1; Search for: Champagne, Michel F.1 |
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| Affiliation | - National Research Council of Canada. NRC Industrial Materials Institute
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| Format | Text, Article |
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| Subject | Biodegradable polymers; poly(lactic acid); foam extrusion; open-cell; plasticization |
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| Abstract | This paper presents a thorough investigation of the continuous extrusion foaming of amorphous poly(lactic acid) (PLA) using carbon dioxide (CO₂) as the blowing agent. Detailed results describing the plasticization induced by CO₂ dissolution as measured from two different methods, on-line rheometry and in-line ultrasonic technique, are given. Characteristics of the foams obtained from extrusion performed under various processing conditinos are also reported. Extrusion of PLA foams in the 20-25 kg/m³ density range was achieved. However, the associated processing window was very narrow: CO₂ content lower than ca. 7 wt% did not lead to significant foam expansion while foams blown at CO₂ contents larger than 8.3 wt% showed severe shrinkage upon ageing. |
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| Publication date | 2007-01-01 |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NRC number | NRCC 48933 |
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| NPARC number | 15769644 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | f3b6575d-a09e-46c1-8d2c-720b67224eed |
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| Record created | 2010-07-06 |
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| Record modified | 2020-05-10 |
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