ICCAS OpenIR
Shape memory effect of poly(L-lactide)-based polyurethanes with different hard segments
Wang, Wenshou; Ping, Peng; Chen, Xuesi; Jing, Xiabin
2007-07-01
Source PublicationPOLYMER INTERNATIONAL
ISSN0959-8103
Volume56Issue:7Pages:840-846
AbstractA series of biodegradable polylactide-based polyurethanes (PLAUs) were synthesized using PLA diol (M(n) = 3200) as soft segment, 4,4 '-diphenylmethane diisocyanate (MDI), 2,4-toluene diisocyanate (TDI), and isophorone diisocyanate (IPDI) as hard segment, and 1,4-butanediol as chain extender. The structures and properties of these PLAUs were studied using infrared spectroscopy, differential scanning calorimetry, tensile testing, and thermomechanical analysis. Among them, the MDI-based PLAU has the highest T(g), maximum tensile strength, and restoration force, the TDI-based PLAU has the lowest T(g), and the IPDI-based PLAU has the highest tensile modulus and elongation at break. They are all amorphous. The shape recovery of the three PLAUs is almost complete in a tensile elongation of 150% or a twofold compression. They can keep their temporary shape easily at room temperature (20 degrees C). More importantly, they can deform and recover at a temperature below their T(g) values. Therefore, by selecting the appropriate hard segment and adjusting the ratio of hard to soft segments, they can meet different practical demands for shape memory medical devices. (C) 2007 Society of Chemical Industry.
KeywordGlass Transition Temperature Poly(L-lactide) Polyurethane Shape Memory
DOI10.1002/pi.2204
Indexed BySCI
Language英语
WOS IDWOS:000247218700004
PublisherWILEY-BLACKWELL
Citation statistics
Cited Times:33[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/62272
Collection中国科学院化学研究所
Corresponding AuthorJing, Xiabin
Affiliation1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China
Recommended Citation
GB/T 7714
Wang, Wenshou,Ping, Peng,Chen, Xuesi,et al. Shape memory effect of poly(L-lactide)-based polyurethanes with different hard segments[J]. POLYMER INTERNATIONAL,2007,56(7):840-846.
APA Wang, Wenshou,Ping, Peng,Chen, Xuesi,&Jing, Xiabin.(2007).Shape memory effect of poly(L-lactide)-based polyurethanes with different hard segments.POLYMER INTERNATIONAL,56(7),840-846.
MLA Wang, Wenshou,et al."Shape memory effect of poly(L-lactide)-based polyurethanes with different hard segments".POLYMER INTERNATIONAL 56.7(2007):840-846.
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