title: Novel biodegradable shape memory material based on partial inclusion complex formation between alpha-cyclodextrin and poly(epsilon-caprolactone).
abstract: A novel shape memory material was prepared based on the formation of inclusion complexes between alpha-cyclodextrin (alpha-CD) and poly(epsilon-caprolactone) (PCL); the PCL-alpha-CD inclusion crystallites serve as a fixing phase, while free PCL crystallites serve as a reversible phase. The characteristics of the material were investigated and a mechanism for the shape memory behavior was proposed. This material showed good shape memory properties, with the recovery ratio exceeding 90% and the recovery time being less than 6 s at 90 degrees C. This PCL-alpha-CD partial inclusion complex lost about 50% (47.4 +/- 4.4%) weight within 45 days in presence of lipase, indicating its degradability. The shape memory and biodegradation properties of the well-designed polymer-alpha-CD complexes indicate great promise for this novel shape memory material.
authors.affiliation: State Key Laboratory of Polymer Materials Engineering, Polymer Research Institute of Sichuan University, Chengdu 610065, China.
authors.forename: Haiya
authors.initials: H
authors.lastname: Luo
authors.forename: Yan
authors.initials: Y
authors.lastname: Liu
authors.forename: Zhijun
authors.initials: Z
authors.lastname: Yu
authors.forename: Sheng
authors.initials: S
authors.lastname: Zhang
authors.forename: Bangjing
authors.initials: B
authors.lastname: Li
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D001673:Biodegradation, Environmental; D003460:Crystallization; D008049:Lipase / Q000737:chemistry; D008422:Materials Testing; D011091:Polyesters / Q000737:chemistry* / Q000378:metabolism; D011108:Polymers / Q000737:chemistry; D012997:Solvents / Q000737:chemistry; D013696:Temperature; D013997:Time Factors; D014961:X-Ray Diffraction; D047391:alpha-Cyclodextrins / Q000737:chemistry*
chemical_list: D001672:Biocompatible Materials; D011091:Polyesters; D011108:Polymers; D012997:Solvents; D047391:alpha-Cyclodextrins; C016240:polycaprolactone; D008049:Lipase; C032613:alpha-cyclodextrin