The behavior of poly( ε $$ \boldsymbol{\upvarepsilon} $$ -caprolactone) and poly(ethylene oxide)-b-poly( ε $$ \boldsymbol{\upvarepsilon} $$ -caprolactone) grafted to a poly(glycerol adipate) backbone at the air/water interface

Naolou, Toufik; Busse, Karsten; Lechner, Bob‐Dan; Kreßler, Jörg

doi:10.1007/s00396-014-3168-1

Cited by 12 publications

(13 citation statements)

References 53 publications

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“…rsif.royalsocietypublishing.org J. R. Soc. Interface 14: 20161028 film collapse [106,107]. PEO segments dissolute in the subphase, whereby the PCL segments are still able to crystallize, which is revealed by AFM at transferred LB films.…”

Section: Polymer-based Langmuir Layersmentioning

confidence: 99%

“…For example, the introduction of urethane junction units results in a decreased crystallization tendency and a closer film packing due to the formation of hydrogen bondings [105]. The introduction of polyethylene glycol (PEO) blocks in linear and grafted block copolymers (PCLb-PEO) leads to the formation of a transition region before film collapse [106,107]. PEO segments dissolute in the subphase, whereby the PCL segments are still able to crystallize, which is revealed by AFM at transferred LB films.…”

Section: Polymers At the Air-water Interface And On Solid Substratementioning

confidence: 99%

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Evaluating polymeric biomaterial–environment interfaces by Langmuir monolayer techniques

Schöne

Roch

Schulz

et al. 2017

J. R. Soc. Interface.

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Polymeric biomaterials are of specific relevance in medical and pharmaceutical applications due to their wide range of tailorable properties and functionalities. The knowledge about interactions of biomaterials with their biological environment is of crucial importance for developing highly sophisticated medical devices. To achieve optimal performance, a description at the molecular level is required to gain better understanding about the surface of synthetic materials for tailoring their properties. This is still challenging and requires the comprehensive characterization of morphological structures, polymer chain arrangements and degradation behaviour. The review discusses selected aspects for evaluating polymeric biomaterial-environment interfaces by Langmuir monolayer methods as powerful techniques for studying interfacial properties, such as morphological and degradation processes. The combination of spectroscopic, microscopic and scattering methods with the Langmuir techniques adapted to polymers can substantially improve the understanding of their behaviour.

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Section: Polymer-based Langmuir Layersmentioning

confidence: 99%

Section: Polymers At the Air-water Interface And On Solid Substratementioning

confidence: 99%

Evaluating polymeric biomaterial–environment interfaces by Langmuir monolayer techniques

Schöne

Roch

Schulz

et al. 2017

J. R. Soc. Interface.

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“…The PCL crystallization is influenced when a second polymer is present in the monolayer, e.g., poly(tertbutyl methacrylate) [15] or polystyrene [16]. Furthermore, Langmuir isotherm studies of PCL, of linear or star-shaped block copolymers, of PCL and PEO as well as graft block copolymers of poly(glycerol adipate) have been studied [14,[17][18][19].…”

Section: Introductionmentioning

confidence: 99%

“…Based on BAM and growth rate analysis, the formation of the crystals was described as diffusion-limited. Furthermore, the melting temperature for PCL crystals formed on the water surface is higher compared to bulk PCL [14]. The PCL crystallization is influenced when a second polymer is present in the monolayer, e.g., poly(tertbutyl methacrylate) [15] or polystyrene [16].…”

Section: Introductionmentioning

confidence: 99%

Polymer Crystallization on the Surface of Water or Aqueous Salt Solution

et al. 2016

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The crystallization of two semicrystalline and water-insoluble polymers with ester moieties, namely poly(e-caprolactone) (PCL) and isotactic poly(methyl methacrylate) (i-PMMA), was studied on the water surface using Langmuir trough measurements and Brewster angle microscopy. Additionally, Langmuir-Blodgett films were prepared and examined by atomic force microscopy. It was demonstrated that PCL forms distinct single crystals on the water surface with polymer chain orientation perpendicular to the water surface. i-PMMA behaved differently and crystallized upon compression on the water surface in a homogeneous layer with polymer chain orientation parallel to the water surface. In contrast, poly(ethylene oxide) (PEO) is a water-soluble polyether and its crystallization at the air/liquid interface could only be studied when the water subphase was replaced with aqueous salt solutions containing kosmotropic salts according to the Hofmeister series.

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“…On the other hand, PEO-b-PLA contains two blocks with distinct T g , T c and T m . These block copolymers are the ideal system to investigate the nano confinement on the polymer crystallization, and PEO-b-PCL could also crystallize on the air-water interface [18,19]. [20] Banding in polymer spherulites, i.e., the presence of radially periodic structure attributable to a twisting of crystallographic orientation about radii that usually give rise to concentric rings or bands of extinction in polarized light microscopy, is a common occurrence and has been studied for more than a century [21].…”

Section: Introductionmentioning

confidence: 99%

Crystallization Behaviors and Structure Transitions of Biocompatible and Biodegradable Diblock Copolymers

Xue

Jiang

2014

Polymers

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Biocompatible and biodegradable block copolymers (BBCPs) containing crystalline blocks become increasingly important in polymer science, and have great potential applications in polymer materials. Crystallization in polymers is accompanied by the adoption of an extended conformation, or often by chain folding. It is important to distinguish between crystallization in homopolymers and in block copolymers. In homopolymers, chain folding leads to metastable structures introduced by the crystallization kinetics. In contrast, equilibrium chain folding in diblocks can be achieved as the equilibrium number of the folds is controlled by the size of the second block. The structures of BBCPs, which are determined by the competition between crystallization, microphase separation, kinetics and processing, have a tremendous influence on the final properties and applications. In this review, we present the recent advances on crystalline-crystalline diblock copolymer in our group.

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The behavior of poly( ε $$ \boldsymbol{\upvarepsilon} $$ -caprolactone) and poly(ethylene oxide)-b-poly( ε $$ \boldsymbol{\upvarepsilon} $$ -caprolactone) grafted to a poly(glycerol adipate) backbone at the air/water interface

Cited by 12 publications

References 53 publications

Evaluating polymeric biomaterial–environment interfaces by Langmuir monolayer techniques

Evaluating polymeric biomaterial–environment interfaces by Langmuir monolayer techniques

Polymer Crystallization on the Surface of Water or Aqueous Salt Solution

Crystallization Behaviors and Structure Transitions of Biocompatible and Biodegradable Diblock Copolymers

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