Polyurethane toughened polylactide

SummaryBrittle polylactide (PLA) was toughened by introducing 5 wt % of a poly(ɛ-caprolactone)(PCL) diol- and triol-based polyurethane (PU) network. The extent of cross-linking of the PU was varied by changing the ratio between diol and triol. The effects of the PU content and its crosslink density...

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Bibliographic Details
Published in:Polymer bulletin (Berlin, Germany) Germany), 1998-04, Vol.40 (4-5), p.485-490
Main Authors: YUMIN YUAN, RUCKENSTEIN, E
Format: Article
Language:English
Subjects:
Applied sciences
Crosslinking
Exact sciences and technology
Mechanical properties
Mixtures
Organic polymers
Physicochemistry of polymers
Polylactic acid
Polyurethane resins
Properties and characterization
Toughness
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Summary:SummaryBrittle polylactide (PLA) was toughened by introducing 5 wt % of a poly(ɛ-caprolactone)(PCL) diol- and triol-based polyurethane (PU) network. The extent of cross-linking of the PU was varied by changing the ratio between diol and triol. The effects of the PU content and its crosslink density on the mechanical properties and the toughness of PU/PLA blends were investigated. Maximum toughness of PU/PLA blends, an order of magnitute higher than that of pure PLA, could be achieved by the use of a proper amount of PU and a proper extent of cross-linking.
ISSN:0170-0839
1436-2449
DOI:10.1007/s002890050280