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Film Extrusion and Film Weldability of Poly(lactic acid) Plasticized with Triacetine and Tributyl Citrate.

Ljungberg, Nadia LU ; Andersson, T and Wesslén, Bengt LU (2003) In Journal of Applied Polymer Science 88(14). p.3239-3247
Abstract
Film extrusion and welding of biodegradable polymer films are important processes that must be considered in the development of compostable packaging materials. Film extrusion of poly(lactic acid) (PLA) has proved to be rather difficult because of its brittleness, but the flexibility of PLA can be improved by incorporation of a plasticizer in the material. PLA was plasticized with triacetine (TAc) and tributyl citrate (TbC). The blended materials and neat PLA were film extruded and the films were welded with constant heat (CH) welding. The films were analyzed by means of gas chromatography (GC), dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), gel permeation chromatography (GPC), contact angle measurements, and... (More)
Film extrusion and welding of biodegradable polymer films are important processes that must be considered in the development of compostable packaging materials. Film extrusion of poly(lactic acid) (PLA) has proved to be rather difficult because of its brittleness, but the flexibility of PLA can be improved by incorporation of a plasticizer in the material. PLA was plasticized with triacetine (TAc) and tributyl citrate (TbC). The blended materials and neat PLA were film extruded and the films were welded with constant heat (CH) welding. The films were analyzed by means of gas chromatography (GC), dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), gel permeation chromatography (GPC), contact angle measurements, and tensile testing. Storage of the plasticized films resulted in an increased crystallinity and changes in the film properties, rendering CH welding difficult. The welding process had no influence on thermal properties, such as cold crystallization temperature, melting temperature, crystallization temperature, and degree of crystallinity, of neat PLA but caused significant changes in the crystallinity of the plasticized materials. © 2003 Wiley Periodicals, Inc. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
ageing, welding, thermal properties, processing
in
Journal of Applied Polymer Science
volume
88
issue
14
pages
3239 - 3247
publisher
John Wiley & Sons
external identifiers
  • wos:000182425400026
  • scopus:0038673422
ISSN
1097-4628
DOI
10.1002/app.12106
language
English
LU publication?
yes
id
d40d5f4d-b1e9-4e38-914b-a1da257d794c (old id 129543)
date added to LUP
2007-07-13 14:18:00
date last changed
2018-09-09 03:39:03
@article{d40d5f4d-b1e9-4e38-914b-a1da257d794c,
  abstract     = {Film extrusion and welding of biodegradable polymer films are important processes that must be considered in the development of compostable packaging materials. Film extrusion of poly(lactic acid) (PLA) has proved to be rather difficult because of its brittleness, but the flexibility of PLA can be improved by incorporation of a plasticizer in the material. PLA was plasticized with triacetine (TAc) and tributyl citrate (TbC). The blended materials and neat PLA were film extruded and the films were welded with constant heat (CH) welding. The films were analyzed by means of gas chromatography (GC), dynamic mechanical analysis (DMA), differential scanning calorimetry (DSC), gel permeation chromatography (GPC), contact angle measurements, and tensile testing. Storage of the plasticized films resulted in an increased crystallinity and changes in the film properties, rendering CH welding difficult. The welding process had no influence on thermal properties, such as cold crystallization temperature, melting temperature, crystallization temperature, and degree of crystallinity, of neat PLA but caused significant changes in the crystallinity of the plasticized materials. © 2003 Wiley Periodicals, Inc.},
  author       = {Ljungberg, Nadia and Andersson, T and Wesslén, Bengt},
  issn         = {1097-4628},
  keyword      = {ageing,welding,thermal properties,processing},
  language     = {eng},
  number       = {14},
  pages        = {3239--3247},
  publisher    = {John Wiley & Sons},
  series       = {Journal of Applied Polymer Science},
  title        = {Film Extrusion and Film Weldability of Poly(lactic acid) Plasticized with Triacetine and Tributyl Citrate.},
  url          = {http://dx.doi.org/10.1002/app.12106},
  volume       = {88},
  year         = {2003},
}