Self-healing polymers using electrosprayed microcapsules containing oil: Molecular dynamics simulation and experimental studies

Sun, Chuanbowen; Yarmohammadi, Ali; Barbaz‐Isfahani, Reza; Nejad, Mazyar Ghadiri; Toghraie, Davood; Fard, Ebrahim Khansari; Saber‐Samandari, Saeed; Khandan, Amirsalar

doi:10.1016/j.molliq.2020.115182

Cited by 38 publications

(10 citation statements)

References 50 publications

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“…In this study, the author loaded collagen microsphere containing BG nanopowder with different content of doped Ce into PCL fibrous scaffolds and their bioactivity and biocompatibility were evaluated in detail. The results confirmed the positive effect of the combination of Ce doped BG nanoparticles encapsulated collagen microspheres on the bioactivity and cell performance of PCL fibers for bone tissue engineering applications 41–62 …”

Section: Resultssupporting

confidence: 61%

Fabrication of fibrous poly (ɛ‐caprolactone) nano‐fibers containing cerium doped‐bioglasses nanoparticles encapsulated collagen

Sahrapeyma

Asefnejad

Azami

et al. 2021

J of Applied Polymer Sci

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Novel nanosized designed ceramic powders, cerium (Ce) doped bioglass (BG) with various doped Ce content, were synthesized by sol-gel method in order to be employed in the development of PCL fibrous scaffold for bone tissue engineering applications. Characterization techniques such as X-ray diffraction analysis, transmission electron microscopy, Fourier transform infrared spectroscopy, and energy-dispersive X-ray spectroscopy were employed to evaluate the developed Ce doped BG powders. The results confirmed successful doping of Ce inside BG structure. 0, 1, 3, and 10 wt% Ce doped 58S BG were successfully encapsulated in the collagen microspheres by water-in-oil emulsion method and the average particle size and hydrodynamic diameter of microspheres were determined using scanning electron microscopy and dynamic light scattering analysis, respectively. Next, 0, 1, 3, and 10 wt% Ce doped 58S BG encapsulated collagen microspheres were loaded inside the Poly(ϵ-caprolactone) fibrous scaf-

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Section: Resultssupporting

confidence: 61%

Fabrication of fibrous poly (ɛ‐caprolactone) nano‐fibers containing cerium doped‐bioglasses nanoparticles encapsulated collagen

Sahrapeyma

Asefnejad

Azami

et al. 2021

J of Applied Polymer Sci

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“…To tackle these Several methods have been presented for creating selfhealing capability in polymeric structures, but one of the most versatile, effective, and viable strategies is, randomly distributed microcapsules containing liquid healing agents inside the polymeric matrix. [12][13][14][15][16][17][18][19][20][21] As a case in point, Brown et al 22 studied the effect of embedded microcapsules on the fracture toughness of epoxy matrix. Their outcomes indicated that the addition of filled microcapsules filled with dicyclopentadiene markedly escalates the fracture toughness up to 127%.…”

Section: Introductionmentioning

confidence: 99%

Experimental and numerical investigation on the effect of core-shell microcapsule sizes on mechanical properties of microcapsule-based polymers

Teimouri

Barbaz‐Isfahani

Saber‐Samandari

et al. 2022

Journal of Composite Materials

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In this study, the effect of various microcapsule sizes on the mechanical properties of microcapsule-based polymeric materials was investigated using the finite element method and validated with experimental outcomes. Specimens containing 5wt. % of microcapsules were fabricated to calculate the elastic modulus, and maximum tensile stress, and to validate numerical results. To consider the error, five tests were performed for all samples, and results were reported on average. The average errors between the numerical outcomes and experimental results were 4.74% and 5.35% for maximum tensile stress and elastic modulus, respectively. The coaxial electrospraying method was used for synthesizing microcapsules made of alginate (shell) and epoxy (core). A scanning electron microscope (SEM) was used to calculate the diameter of the capsules. To develop an empirical model for the average microcapsule diameter (AMD) and carry out the optimization process, response surface methodology (RSM) with central composite design was used. Also, analysis of variance was employed to validate the accuracy of the model. The effects of three parameters, including voltage, needle size, and the distance between the tip of the needle to the collector, on average microcapsule diameter, were investigated. The empirical model was validated by a confirmation run, and the determined error (1.93%) between the predicted and experimental results indicates the precision of the model. The numerical study indicated that microcapsule-based self-healing polymers containing smaller microcapsules tolerate higher stresses. However, the effect of the microcapsules’ size on the elastic modulus of a representative volume element was negligible.

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“…6 With the expansion of the range of its application, the potential fire hazards in the process of using PU sponge are becoming more and more serious. 7,8 At the same time, it also causes an increasingly heavy burden on the environment. Therefore, it is necessary to develop PU sponge with flame retardancy.…”

Section: Introductionmentioning

confidence: 99%

“…Solid particles and toxic gases in black smoke are often the direct cause of suffocation and poisoning deaths, which greatly threaten human life and property safety 6 . With the expansion of the range of its application, the potential fire hazards in the process of using PU sponge are becoming more and more serious 7,8 . At the same time, it also causes an increasingly heavy burden on the environment.…”

Section: Introductionmentioning

confidence: 99%

Hollow glass microspheres modified polyurethane sponge with enhanced flame retardancy

Niu

Wang

Zhu

et al. 2022

J of Applied Polymer Sci

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Nowadays, with the continuous improvement of domestic fire safety requirements, the development of materials with better thermal insulation and flame retardant performance is of great significance to modern building energy conservation.Herein, hollow glass microspheres (HGM) modified polyurethane sponge (PU-HGM) with enhanced flame retardancy is prepared by dipping HGM onto PU sponge through polydimethylsiloxane. The PU-HGM sponge exhibits porous network structure with rich micron sized pores, as well as the HGM with closed hollow spherical structure endow the prepared PU-HGM better thermal insulation performance, and the thermal conductivity is 0.050 W m À1 K À1 . Besides, the PU-HGM maintains excellent elasticity of PU sponge, and shows strong mechanical strength, the stress of PU-HGM sponge was as high as 882 kPa at 70% strain after 3 cycles. More importantly, compared with pure PU sponge, the PU-HGM shows excellent flame retardancy. It keeps its original shape after combustion, and no obvious flame was observed on the surface of PU-HGM sponge. Thus, combined with its high mechanical strength, low material cost, simple and scalable preparation method, the as-prepared PU-HGM sponge shows great potential for application in the field of heat insulation and flame retardant.

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Self-healing polymers using electrosprayed microcapsules containing oil: Molecular dynamics simulation and experimental studies

Cited by 38 publications

References 50 publications

Fabrication of fibrous poly (ɛ‐caprolactone) nano‐fibers containing cerium doped‐bioglasses nanoparticles encapsulated collagen

Fabrication of fibrous poly (ɛ‐caprolactone) nano‐fibers containing cerium doped‐bioglasses nanoparticles encapsulated collagen

Experimental and numerical investigation on the effect of core-shell microcapsule sizes on mechanical properties of microcapsule-based polymers

Hollow glass microspheres modified polyurethane sponge with enhanced flame retardancy

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