Dynamic interplay between phase separation and crystallization in a poly(ɛ-caprolactone)/poly(ethylene glycol) oligomer blend

Chuang, Wei‐Tsung; Jeng, U‐Ser; Hong, Po‐Da; Sheu, Hwo‐Shuenn; Lai, Ying‐Huang; Shih, Kan-Shan

doi:10.1016/j.polymer.2007.03.041

Cited by 34 publications

(31 citation statements)

References 43 publications

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“…This makes very small impact on overall crystallinity which is around 51%. In Figure 8, one can see formed PCL lamellar stacks as a peak at q = 0.04 Å -1 [50]. For the scattering curves corresponding to PCL/PLA with halloysite, the intensity falls with the slope q -1.8 at lower angles.…”

Section: Dynamic Mechanical Analysis (Dma)mentioning

confidence: 93%

Effect of halloysite on structure and properties of melt-drawn PCL/PLA microfibrillar composites

Kelnar¹,

Kratochvíl²,

Fortelný³

et al. 2016

Express Polym. Lett.

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Abstract. The study deals with the modification of mechanical properties of poly (!-caprolactone) (PCL)/poly(lactic acid) (PLA) system using the microfibrillar composite (MFC) concept. As the in-situ formation of PLA fibrils by melt drawing was impossible due to flow instability during extrusion, the system was modified by adding halloysite nanotubes (HNT) using different mixing protocols. The resulting favourable effect on the rheological parameters of the components allowed successful melt drawing. Consequently, PLA fibrils formation combined with the reinforcement of components by HNT and increased PLA crystallinity lead to a biocompatible and biodegradable material with good performance suitable for a broad range of applications. The best results, comparable with analogous MFC modified with layered silicate (oMMT), have been achieved at a relatively low content of HNT of 3%, in spite of its lower reinforcing ability in a single nanocomposite. This indicates that modifying MFC by HNT, including fibrils and interface parameters, is more complex in comparison with the undrawn system.

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Section: Dynamic Mechanical Analysis (Dma)mentioning

confidence: 93%

Effect of halloysite on structure and properties of melt-drawn PCL/PLA microfibrillar composites

Kelnar¹,

Kratochvíl²,

Fortelný³

et al. 2016

Express Polym. Lett.

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“…6b, Table 1). These peaks are characteristic of the PCL orthorhombic unit cell [26][27][28]. Table 1 shows the estimation of the PCL crystallite size perpendicular to the (110) and (200) planes.…”

Section: Wettabilitymentioning

confidence: 99%

New generation poly(ε-caprolactone)/gel-derived bioactive glass composites for bone tissue engineering: Part I. Material properties

Dziadek

Menaszek

Zagrajczuk

et al. 2015

Materials Science and Engineering: C

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“…In the case of crystalline/crystalline polymer blends, there are a range of interactions that can take place, balancing phase separation and crystallisation, these being (i) simultaneous phase separation and crystallisation, (ii) phase-separation induced crystallisation, (iii) crystallisation-induced phase separation and (iv) crystallisation in the separated phases [50].…”

Section: Sample A2 (82% 3hv Random Copolymer)mentioning

confidence: 99%

The morphology of crystallisation of PHBV/PHBV copolymer blends

Langford

Chan

Pratt

et al. 2019

European Polymer Journal

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The crystallisation of a range of as-produced poly(3-hydroxybutyrate-co-3-hydroxyvalerate) copolymer blends from a mixed culture polyhydroxyalkanoate production process, with low (15%), high (82%) and intermediate (62% and 50%) average 3-hydroxyvalerate (3HV) contents, was studied at different temperatures using polarised optical microscopy, differential scanning calorimetry and X-ray crystallography. The low-3HV content material had narrow compositional distribution and crystallised in the typical highly regular banded spherulite morphology, while the other materials displayed varying degrees of interpenetrating crystallisation of separate crystal phases comprising either the 3HV or 3hydroxybutyrate (3HB) crystal lattice structure. Because of the differing and competing crystallisation kinetics of these phases coupled with diffusion effects, there was a very strong influence of crystallisation temperature on the resulting morphology. Thus manipulation of the final material properties of such copolymeric materials is dependent on understanding these effects and controlling their processing and crystallisation temperatures and conditions.

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Dynamic interplay between phase separation and crystallization in a poly(ɛ-caprolactone)/poly(ethylene glycol) oligomer blend

Cited by 34 publications

References 43 publications

Effect of halloysite on structure and properties of melt-drawn PCL/PLA microfibrillar composites

Effect of halloysite on structure and properties of melt-drawn PCL/PLA microfibrillar composites

New generation poly(ε-caprolactone)/gel-derived bioactive glass composites for bone tissue engineering: Part I. Material properties

The morphology of crystallisation of PHBV/PHBV copolymer blends

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