HDPE solution crystallization induced by electrospun PA66 nanofiber

Han, Wenjuan; Zheng, Guoqiang; Liang, Yanyan; Dai, Kun; Liu, Chuntai; Shen, Changyu; Peng, Xiangfang; Fu, Ping; Cao, Wei; Li, Qian

doi:10.1007/s00396-011-2389-9

Cited by 13 publications

(10 citation statements)

References 19 publications

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“…Again as the NFSK is rather generic in nature, it may also offer the opportunity to create a hierarchical structure with different polymer combinations . The presented self-similar hierarchical structure with two levels is a proof-of-principle and could be extended to higher orders, e.g., by aligned deposition of the electrospun nanofibers prior to NFSK formation, which are subsequently combined to thicker threads which might then be decorated by an 3D printing technique with polymer to give the next self-similar level.…”

Section: Resultsmentioning

confidence: 97%

“…Futhermore, the NFSK offers additional tailorability because the polymer of the nanofiber can in principle be different from the shish. 26 Creation of a Self-Similar Hierarchy Based on the Shish-Kebab Morphology. Here, as a proof-of-principle we aimed to create a self-similar two-level hierarchical structure based on the shish-kebab morphology: The first level consists of NHSKs.…”

Section: ■ Introductionmentioning

confidence: 99%

“…In addition, for the filter application the NFSK will even increase the surface area of the mat. Futhermore, the NFSK offers additional tailorability because the polymer of the nanofiber can in principle be different from the shish …”

Section: Introductionmentioning

confidence: 99%

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In Situ Formation of Nanohybrid Shish-Kebabs during Electrospinning for the Creation of Hierarchical Shish-Kebab Structures

et al. 2016

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We successfully tested the hypothesis that the nanohybrid shish-kebab (NHSK) structure, i.e., polymer kebabs on a CNT shish, can be created in situ during electrospinning. In addition, the resulting nanofibers containing the NHSKs were used to create a hierarchical structure by introducing a second level of shish-kebabs: the nanofiber shish-kebab (NFSK), i.e., polymer kebabs on the nanofiber shish. A multiwalled CNT/poly(ε-caprolactone) (MWCNT)/(PCL) solution was electrospun to form nanofibers of Ø ≈ 100 nm. The MWCNTs aligned in fiber direction within the MWCNT/PCL nanofibers. The first time creation of the NHSK during electrospinning was confirmed by bright field diffraction contrast in the transmission electron microscope. The NFSK was created by incubating the NHSK containing nanofibers in a supersaturated PCL solution. A simple model explaining the in situ NHSK formation is presented. The hierarchical structure based on the shish-kebab morphology is proposed as a high-performing building block in future advanced materials.

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Section: Resultsmentioning

confidence: 97%

Section: ■ Introductionmentioning

confidence: 99%

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In Situ Formation of Nanohybrid Shish-Kebabs during Electrospinning for the Creation of Hierarchical Shish-Kebab Structures

et al. 2016

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“…Note that neither phenomena are limited to nanotubes; transcrystallinity has been well-known in fiber composites for almost 50 years, while NHSKs on other surfaces have been more recently described. [101][102][103] Statics: Unit Cells, Lamallae, Spherulites, and Shish-Kebabs Polymorphism in polymers, that is a polymer that will crystallize into more than one unit cell, is not uncommon. Nucleating agents are one very common way to induce the formation of one unit cell versus another, and since carbon nanotubes are nucleating agents for a number of polymers (see Table 2), it certainly is possible that nanotubes might promote one crystal form over another; the remainder of the paragraph is a complete list of all cases known to this author's knowledge.…”

Section: Semicrystalline Polymersmentioning

confidence: 99%

Effects of carbon nanotubes on polymer physics

Grady

2012

J Polym Sci B Polym Phys

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A single carbon nanotube has many similarities with an individual polymer chain including the fact that the end-to-end length of both are often about the same and the diameter of the chain is about the same (for single-walled nanotubes) or only $10 to 20 times larger (for multiwalled nanotubes). The combination of the solid surface and the similarity of the two materials means that polymer physics are altered in manners not seen with any other type of commonly used filler. The purpose of this review is to update a chapter that appears in a recent tome by Grady (2011) and describe how polymer physics is altered in composites that contain carbon nanotubes. Subjects that will be discussed include chain configuration, glass transition, polymer diffusion, unit cells and crystalline superstructure (lamellae, spherulites and shishkebabs), and crystallization kinetics. V C 2012 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 50: 2012

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“…In our previous studies [26,27], the morphology of the polyamide 66 (PA 66) nanofiber induced polyolefin crystallization in solution had been elaborately studied. To further study the effect of polymer nanofiber on the crystallization of polyolefin, in present study, the interfacial crystalline features of PA 66 nanofiber bundles/iPP composites were investigated.…”

Section: Introductionmentioning

confidence: 99%

Transcrystallization in nanofiber bundle/isotactic polypropylene composites: effect of matrix molecular weight

et al. 2012

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Polyamide 66 (PA 66) nanofiber bundles were first electrospun and then introduced into isotactic polypropylene (iPP) melts to prepare nanofiber bundle/iPP composites. To reveal the influences of matrix molecular weight (M n ) on the transcrystalline layer, three kinds of iPP with different M n were adopted. Polarized optical microscope was employed to investigate the transcrystallinity. In the presence of PA 66 nanofiber bundle, the heterogeneous nucleation distinctly happened in iPP melts. Moreover, the higher the iPP M n , the denser the nuclei. Both a decrease in matrix M n and an increase in isothermal crystallization temperature led to an increase in the induction time. The maximum temperature at which the transcrystalline layer can be optically observed increased with the increase of M n . The growth rate of transcrystallinity decreased with the increasing M n and crystallization temperature. Moreover, selective melting of the transcrystalline layers confirmed that it was merely composed of α form crystal for all composites.

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HDPE solution crystallization induced by electrospun PA66 nanofiber

Cited by 13 publications

References 19 publications

In Situ Formation of Nanohybrid Shish-Kebabs during Electrospinning for the Creation of Hierarchical Shish-Kebab Structures

In Situ Formation of Nanohybrid Shish-Kebabs during Electrospinning for the Creation of Hierarchical Shish-Kebab Structures

Effects of carbon nanotubes on polymer physics

Transcrystallization in nanofiber bundle/isotactic polypropylene composites: effect of matrix molecular weight

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