Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/95655
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dc.contributor.authorChien-Hsin Wuzh_TW
dc.contributor.authorYu-Ching Chenzh_TW
dc.contributor.authorShenghong A. Daizh_TW
dc.contributor.authorSu-Chen Chenzh_TW
dc.contributor.authorShih-Huang Tungzh_TW
dc.contributor.author李榮和zh_TW
dc.contributor.authorRong-Ho Leezh_TW
dc.contributor.authorWen-Chiung Suzh_TW
dc.contributor.authorRu-Jong Jengzh_TW
dc.date2017-05-06-
dc.date.accessioned2018-10-12T02:57:33Z-
dc.date.available2018-10-12T02:57:33Z-
dc.identifier.urihttp://hdl.handle.net/11455/95655-
dc.description.abstractPolyurethanes grafted with well-defined polar pendants were synthesized and investigated. A series of linear and dendritic poly(urea/malonamide)s with uniform chain length were first prepared from an iterative synthesis route, which is based on a dual-functional building block, 4-isocyanate-4´-(3,3-dimethyl-2,4-dioxo-azetidine)diphenyl methane (IDD). Moreover, side chain polyurethanes (SPUs) bearing azetidine-2,4-dione functional groups were prepared from one pot reaction for following post-functionalization of poly(urea/malonamide)s when IDD-diols were added to polyurethane prepolymers as chain extenders. Subsequently, the azetidine-2,4-dione functional groups on the SPUs underwent addition reactions with amino functional group containing dendritic or linear poly(urea/malonamide)s under mild condition, without the need of catalyst and protection/deprotection procedure to achieve polyurethanes grafted with well-defined pendants. Mechanical properties of these comb-like polyurethanes strongly depend on the architecture and the molecular length of poly(urea/malonamide) pendants, which could be adjusted by the grafting fractions of the dendritic or linear poly(urea/malonamide)s with various generations. These poly(urea/malonamide) pendants provided strong hydrogen bonding interactions to achieve physical crosslinking effects in the polyurethanes. Consequently, the polyurethanes with improved mechanical properties and sustained phase transition exhibit shape memory properties.zh_TW
dc.language.isoen_USzh_TW
dc.publisherPOLYMERzh_TW
dc.relationPolymer, Volume 119, 16 June 2017, Pages 1-12zh_TW
dc.relation.urihttps://www.sciencedirect.com/science/article/pii/S0032386117304810zh_TW
dc.subjectIterative synthesiszh_TW
dc.subjectDendronszh_TW
dc.subjectPolyurethaneszh_TW
dc.subjectShape memory materialszh_TW
dc.titleIterative synthesis of monodisperse pendants for making comb-like polyurethaneszh_TW
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1016/j.polymer.2017.05.014zh_TW
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.openairetypeJournal Article-
item.cerifentitytypePublications-
item.fulltextwith fulltext-
item.languageiso639-1en_US-
item.grantfulltextrestricted-
Appears in Collections:化學工程學系所
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