Direct evidence of row-nucleated cylindritic crystallization in glass fiber-reinforced polypropylene composites

Varga, J.; Karger‐Kocsis, J.

doi:10.1007/bf00296241

Cited by 97 publications

(59 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In our previous work [26], a region full of shish-kebab (cylindrite) structures induced by PVIM, which belong to shish-kebablike structures reported by Han and coworkers [23,24], was also found between skin and core. These shish-kebab structures were in close resemblance to the polymorphic shish-kebab morphology in iPP melts sheared with fibers [27][28][29], crystallization in fibers/polymer composites [30,31], or sample crystallization by a razor blade shear in the melt [32]. However, in our experiment there were neither fibers nor other nucleation species added.…”

supporting

confidence: 66%

A multi-layer bioinspired design with evolution of shish-kebab structures induced by controlled periodical shear field

Liu¹,

Zhang²,

Liu³

et al. 2013

Express Polym. Lett.

View full text Add to dashboard Cite

The crystallization of polymers, caused by flow fields in the melt, has been the subject of extensive studies for many years. In this study, we use periodical shear to induce polypropylene to form multi-layer structure, which is usually observed in plants. Two interesting points were found: firstly, the quest of mimicking natural structures was achieved by controlled periodical shear field; secondly, the evolution from nano to shish-kebab-like cylindrite structure was obtained in the multi-layer structure, which can be clarified by nuclei competition model. This study can be used to better understand the shear-induced crystallization of polymer. Here our intention is to place this new observation on the map, leaving a fuller presentation and discussion of the work to a future publication

show abstract

supporting

confidence: 66%

A multi-layer bioinspired design with evolution of shish-kebab structures induced by controlled periodical shear field

Liu¹,

Zhang²,

Liu³

et al. 2013

Express Polym. Lett.

View full text Add to dashboard Cite

show abstract

“…8,12,13 On the other hand, although it has been specific morphology of the polymer in the transfound that the glass fiber increases the nucleation crystalline zone is expected to influence the adhedensity, 9 the existence of a transcrystalline zone sion at the interface, due to an increased nucleation density as well as the mechanical properties was not proved by microscopic investigations. 9,14 of the interphase due to a preferential orientation This article is the second part of a study of model of the lamellae.…”

Section: Introductionmentioning

confidence: 91%

Isothermal crystallization of iPP in model glass-fiber composites

Janevski¹,

Bogoeva‐Gaceva²

1998

J. Appl. Polym. Sci.

View full text Add to dashboard Cite

Isothermal crystallization of iPP in model glass-fiber composites is studied by DSC, and the basic energetic parameters of crystallization are determined. Unsized untreated and thermally treated glass fibers are used in model composites to determine the role of the surface on nucleation and crystallization processes. Thermally treated glass fibers are found to exhibit a predominant nucleating effect as compared to unsized untreated ones, and the crystallization proceeds faster, resulting in lower values for the halftime of crystallization (10-120 s). The energy of formation of a nuclei of critical dimensions at a given T c is also lower, and it decreases as the content of the fibers in the composite increases. The surface free energy of folding, s e Å 140 1 10 03 J/m 2 , was determined for iPP in the composite containing 50% glass fibers, while for pure iPP, s e Å 170 1 10 03 J/m 2 was found.

show abstract

“…In fact, a transcrystalline interphase can be generated as a function of the cooling and/or well described by theoretical models and verified experimentally in the case of the interface beshearing in the supercooled melt. [6][7][8][9][10] Nevertheless, most of the articles do not definitely conclude tween two linear polymers connected by block copolymers. [17][18][19][20] In the case of semicrystalline polyon the effect of such interfacial layer on the load mers, the ability of the polymer chains to crystallize can be used as an additional phenomenon to…”

Section: Introductionmentioning

confidence: 99%

Synthesis and grafting ability of silane-terminated polyethylenes on silica surfaces

Duchet

Chapel

Chabert

et al. 1997

J. Appl. Polym. Sci.

View full text Add to dashboard Cite

Chlorosilane-terminated polyethylenes having different molar masses are prepared to be used as connecting molecules between a silica surface and a neat polyethylene matrix. The synthesis and the grafting ability of such functionalized polyethylenes is reported. The grafting efficiency is demonstrated by means of 29 Si NMR and wetting measurements according to the hydrophobic nature of the grafted molecules in comparison with the hydrophilic character of the silica surface. The resulting thickness and refractive index of the dry grafted layers are characterized using spectroscopic ellipsometry. The grafting ratios are given from microanalysis measurements. Surface topography is observed using AFM. All of these techniques are in a good agreement and a general trend of the organization of the tethered layers at the surface is proposed.

show abstract

Direct evidence of row-nucleated cylindritic crystallization in glass fiber-reinforced polypropylene composites

Cited by 97 publications

References 11 publications

A multi-layer bioinspired design with evolution of shish-kebab structures induced by controlled periodical shear field

A multi-layer bioinspired design with evolution of shish-kebab structures induced by controlled periodical shear field

Isothermal crystallization of iPP in model glass-fiber composites

Synthesis and grafting ability of silane-terminated polyethylenes on silica surfaces

Contact Info

Product

Resources

About