Morphology, crystallization and mechanical properties of poly(ɛ-caprolactone)/graphene oxide nanocomposites

Wang, Guangshuo; Wei, Zhiyong; Sang, Lin; Chen, Guangyi; Zhang, Wanxi; Dong, Xufeng; Qi, Min

doi:10.1007/s10118-013-1278-8

Cited by 43 publications

(40 citation statements)

References 49 publications

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“…In addition, graphene is biocompatible and even beneficial for growing cells, for instance supporting the adhesion and proliferation of mouse fibroblast cells (Wan and Chen, 2011;Sayyar et al, 2013). Due to these unique properties, several researchers have been carrying out studies to investigate the effects of graphene or graphene oxide as a reinforcing agent on mechanical, electrical and bioactive properties of composite materials, including GO reinforced PCL (Kai et al, 2008;Wan and Chen, 2011;Wang et al, 2013). It is reported inclusion of GO would significantly increase tensile strength and modulus of PCL (Wan and Chen, 2011), which is consistent with results of the research conducted by Wang et al (Kai et al, 2008;Wang et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…Due to these unique properties, several researchers have been carrying out studies to investigate the effects of graphene or graphene oxide as a reinforcing agent on mechanical, electrical and bioactive properties of composite materials, including GO reinforced PCL (Kai et al, 2008;Wan and Chen, 2011;Wang et al, 2013). It is reported inclusion of GO would significantly increase tensile strength and modulus of PCL (Wan and Chen, 2011), which is consistent with results of the research conducted by Wang et al (Kai et al, 2008;Wang et al, 2013). Reinforcing effects of nanoparticles (HA/GO) are generally attributed to the strong interaction between matrix and embedded particles (Hao et al, 2002;Kai et al, 2008;Wan and Chen, 2011;Wang et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

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Advanced mechanical and thermal characterization of 3D bioextruded poly(e-caprolactone)-based composites

Wang

Domingos

Scenini

2018

RPJ

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Purpose-The main purpose of the present work is to study the effect of nano hydroxyapatite (HA) and graphene oxide (GO) particles on thermal and mechanical performances of 3D printed poly(εcaprolactone) (PCL) filaments used in Bone Tissue Engineering (BTE). Design/methodology/approach-Raw materials were prepared by melt blending, followed by 3D printing via 3D Discovery (regenHU Ltd., CH) with all fabricating parameters kept constant. Filaments, including pure PCL, PCL/HA, and PCL/GO, were tested under the same conditions. Several techniques were used to mechanically, thermally, and microstructurally evaluate properties of these filaments, including Differential Scanning Calorimetry (DSC), tensile test, nano indentation, and Scanning Electron Microscope (SEM). Findings-Results show that both HA and GO nano particles are capable of improving mechanical performance of PCL. Enhanced mechanical properties of PCL/HA result from reinforcing effect of HA, while a different mechanism is observed in PCL/GO, where degree of crystallinity plays an important role. In addition, GO is more efficient at enhancing mechanical performance of PCL compared with HA. Originality/value-For the first time, a systematic study about effects of nano HA and GO particles on bioactive scaffolds produced by Additive Manufacturing (AM) for bone tissue engineering applications is conducted in this work. Mechanical and thermal behaviors of each sample, pure PCL, PCL/HA and PCL/GO, are reported, correlated, and compared with literature.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Advanced mechanical and thermal characterization of 3D bioextruded poly(e-caprolactone)-based composites

Wang

Domingos

Scenini

2018

RPJ

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“…Huang et al reported that GO could have a twofold effect on the poly(L-lactic acid) (PLLA) crystallization process: as heterogeneous nucleation agent and for space confinement [9]. Wang et al prepared poly(ε-caprolactone) (PCL)/GO nanocomposites by in situ polymerization, and Hua et al used a ring-opening polymerization method, finding that GO could act as a nucleation agent to enhance the crystallization of PCL in the nanocomposites [10,11]. Moreover, with excellent mechanical properties and large aspect ratio, GO can improve the mechanical properties of polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Structural Effects of Residual Groups of Graphene Oxide on Poly(ε-Caprolactone)/Graphene Oxide Nanocomposite

Duan

et al. 2018

Crystals

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Abstract:In this work, the crystallization behaviors, such as degree of crystallinity and crystalline thickness of poly(ε-caprolactone) (PCL) matrix with the incorporation of graphene oxide (GO) and their evolution with time were examined in order to better understand the influences of residual groups of GO on the semi-crystalline polyester. The results showed that the residual strong oxidizing debris on the GO surface could induce the degradation of amorphous parts in PCL matrix. Moreover, the increasing degree of crystallinity and almost constant crystalline thickness implies that oxidative degradation cannot degrade the crystal structure of PCL matrix.

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“…[139] The aggregation and stacking of GO nanosheets were also supported by tethering GO sheets on the PCL chains. [140] GO was also incorporated in PCL and poly((R)-3-hydroxybutyric acid) (PHB) nanocomposites. By mixing PHB with PCL, the degradability of PCL was enhanced.…”

Section: Pcl Filmsmentioning

confidence: 99%

Graphene Oxide/Polymer‐Based Biomaterials

2017

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Since its discovery in 2004, derivatives of graphene have been developed and heavily investigated in the field of tissue engineering. Among the most extensively studied forms of graphene, graphene oxide (GO), and GO/ polymer-based nanocomposites have attracted great attention in various forms such as films, 3D porous scaffolds, electrospun mats, hydrogels, and nacre-like structures. In this review, the most actively investigated GO/ polymer nanocomposites are presented and discussed, these nanocomposites are based on chitosan, cellulose, starch, alginate, gellan gum, poly(vinyl alcohol) (PVA), poly(acrylamide), poly(e-caprolactone) (PCL), poly(lactic acid) (PLLA), poly(lactide-co-glycolide) (PLGA), gelatin, collagen, and silk fibroin (SF). The biological and mechanical performance of such nanocomposites are comprehensively scrutinized and ongoing research questions are addressed. The analysis of the literature reveals overall the great potential of GO/ polymer nanocomposites in tissue engineering strategies and indicates also a series of challenges requiring further research efforts.

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Morphology, crystallization and mechanical properties of poly(ɛ-caprolactone)/graphene oxide nanocomposites

Cited by 43 publications

References 49 publications

Advanced mechanical and thermal characterization of 3D bioextruded poly(e-caprolactone)-based composites

Advanced mechanical and thermal characterization of 3D bioextruded poly(e-caprolactone)-based composites

Structural Effects of Residual Groups of Graphene Oxide on Poly(ε-Caprolactone)/Graphene Oxide Nanocomposite

Graphene Oxide/Polymer‐Based Biomaterials

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