The contemporary role of ε-caprolactone chemistry to create advanced polymer architectures

Sisson, Adam L.; Ekinci, Duygu; Lendlein, Andreas

doi:10.1016/j.polymer.2013.04.045

Cited by 168 publications

(144 citation statements)

References 232 publications

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“…PCL diols are traditional building blocks of PUs. Recently #-caprolactone based oligomers with various molecular architectures became platform chemicals for PU and polyester syntheses [42]. The interest behind this development is due to the complete biodegradability, low T g and relatively low T m of PCL.…”

Section: Copolymersmentioning

confidence: 99%

Biodegradable polyester-based shape memory polymers: Concepts of (supra)molecular architecturing

Karger‐Kocsis

Kéki

2014

Express Polym. Lett.

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Shape memory (SM) biodegradable polymers (SMPs) and related composites are emerging smart materials in different applications. SMPs may adopt one (dual-shape), two (triple-shape) or several (multishape) stable temporary shapes and recover their permanent shape (or other temporary shapes in case of multi-shape versions) upon the action of an external stimulus. The external stimulus may be temperature, pH, water, light irradiation, redox condition etc. In most cases, however, the SMPs are thermally activated. The 'switching' or transformation temperature (T trans ), enabling the material to return to its permanent shape, is either linked with the glass transition (T g ) or with the melting temperature (T m ).Thus, SMPs are often subdivided based on their switch types into T g -or T m -based SMPs. As reversible 'switches' other mechanisms such as liquid crystallization and related transitions, supermolecular assembly/disassembly, irradiation-induced reversible network formation, formation and disruption of a percolation network, may also serve [1]. The permanent shape is guaranteed by physical or chemical network structures. The latter may be both on molecular and supramolecular levels. Linkages of these networks are termed net points. The temporary shape is created by mechanical deformation above T trans . In some cases the deformation temperature may be below Abstract. Shape memory polymers (SMPs) are capable of memorizing one or more temporary shapes and recovering to the permanent shape upon an external stimulus that is usually heat. Biodegradable polymers are an emerging family within the SMPs. This minireview delivers an overlook on actual concepts of molecular and supramolecular architectures which are followed to tailor the shape memory (SM) properties of biodegradable polyesters. Because the underlying switching mechanisms of SM actions is either related to the glass transition (T g ) or melting temperatures (T m ), the related SMPs are classified as T g -or T m -activated ones. For fixing of the permanent shape various physical and chemical networks serve, which were also introduced and discussed. Beside of the structure developments in one-way, also those in two-way SM polyesters were considered. Adjustment of the switching temperature to that of the human body, acceleration of the shape recovery, enhancement of the recovery stress, controlled degradation, and recycling aspects were concluded as main targets for the future development of SM systems with biodegradable polyesters.

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Section: Copolymersmentioning

confidence: 99%

Biodegradable polyester-based shape memory polymers: Concepts of (supra)molecular architecturing

Karger‐Kocsis

Kéki

2014

Express Polym. Lett.

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“…Because the PCL segment can be degraded by hydrolytic cleavage under acidic or alkaline conditions, [19][20][21] PCL is well known as a biodegradable polymer. Generally, nanoparticles (do100 nm) are taken up by cells via endocytosis pathway and it causes acidic hydrolysis.…”

Section: Poly(ε-caprolactone)(pcl)mentioning

confidence: 99%

Over-1000 nm near-infrared fluorescent biodegradable polymer nanoparticles for deep tissue in vivo imaging in the second biological window

Kamimura

Takahiro

Yoshida

et al. 2017

Polym J

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“…PCL diols are, however, traditional building blocks of PUs. Recently ε-caprolactone based oligomers with various molecular architectures became platform chemicals for PU and polyester syntheses [51]. The interest behind this development is due to the complete biodegradability, low Tg and relatively low Tm of PCL.…”

Section: Polyester-containing Polyurethanes and Related Compositesmentioning

confidence: 99%

Shape Memory Systems with Biodegradable Polyesters

Kocsis

Siengchin

2015

Biodegradable Polyesters

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The contemporary role of ε-caprolactone chemistry to create advanced polymer architectures

Cited by 168 publications

References 232 publications

Biodegradable polyester-based shape memory polymers: Concepts of (supra)molecular architecturing

Biodegradable polyester-based shape memory polymers: Concepts of (supra)molecular architecturing

Over-1000 nm near-infrared fluorescent biodegradable polymer nanoparticles for deep tissue in vivo imaging in the second biological window

Shape Memory Systems with Biodegradable Polyesters

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