scispace - formally typeset
Topic

Acrylonitrile

About: Acrylonitrile is a(n) research topic. Over the lifetime, 16517 publication(s) have been published within this topic receiving 149835 citation(s). The topic is also known as: AN & Cyanoethylene.
Papers
More filters


Journal ArticleDOI
01 Feb 2004-Polymer
Abstract: Composites of polyamide-6 and carbon nanotubes (NT) have been prepared on a corotating twinscrew extruder. It is shown by transmission electron microscopy (TEM) that the nanotubes are dispersed homogeneously in the polyamide-matrix. The electrical conductivity of these composites was analyzed and compared to carbon black filled polyamide-6. It is found that the NT-filled polyamide-6 shows an onset of the electrical conductivity at low filler loadings (4–6 wt%). In agreement with rheological measurements this onset in the conductivity is attributed to a percolation of nanotubes in the insulating matrix polymer. Tensile tests of the NT-composites show a significant increase of 27% in the Young's modulus, however the elongation at break of these materials dramatically decreases due to an embrittlement of the polyamide-6. Blends of these composites and Acrylonitrile/butadiene/styrene (ABS) have been prepared by extrusion. It is shown by TEM measurements that the nanotubes are selectively located in the polyamide-6. These selectively filled polyamide-6/ABS-blends show a highly irregular, cocontinuous morphology. Due to the confinement of the conductive filler to one blend component these materials show an onset in the electrical conductivity at very low filler loadings (2–3 wt%). These findings are explained by a double percolation effect. The NT-filled blends show superior mechanical properties in the tensile tests and in IZOD notched impact tests.

678 citations


Journal ArticleDOI
01 Sep 1993-Angewandte Chemie
Abstract: In kilogram quantities; pure poly(propylene imine) dendrimers can be prepared in an extremely simple reaction sequence comprising Michael addition (primary amines to acrylonitrile) and heterogeneous hydrogenation with a Raney cobalt catalyst. Both steps proceed quantitatively and selectively and can be employed with many core and end groups.

592 citations


Journal ArticleDOI
19 May 2014-Angewandte Chemie
TL;DR: This Review gives an overview of precursor systems, their processing, and the final precursor-dependent structure of carbon fibers (CFs) including new developments in precursor systems for low-cost CFs.
Abstract: This Review gives an overview of precursor systems, their processing, and the final precursor-dependent structure of carbon fibers (CFs) including new developments in precursor systems for low-cost CFs. The following CF precursor systems are discussed: poly(acrylonitrile)-based copolymers, pitch, cellulose, lignin, poly(ethylene), and new synthetic polymeric precursors for high-end CFs. In addition, structure-property relationships and the different models for describing both the structure and morphology of CFs will be presented.

518 citations


Journal ArticleDOI
01 Jul 1987-Macromolecules
Abstract: Polymerisation vivante de methacrylates en presence de cetene silyl acetals comme amorceurs et fluorure, bifluorure, cyanure ou azide comme catalyseurs

443 citations


Network Information
Related Topics (5)
Styrene

36.7K papers, 465.2K citations

94% related
Vinyl acetate

15.9K papers, 162.1K citations

93% related
Polyamide

22.7K papers, 211.5K citations

92% related
Acrylic acid

29.6K papers, 341.7K citations

91% related
Condensation polymer

10.2K papers, 185.4K citations

90% related
Performance
Metrics
No. of papers in the topic in previous years
YearPapers
20222
2021135
2020212
2019243
2018235
2017279

Top Attributes

Show by:

Topic's top 5 most impactful authors

Karl-Heinz Dr. Ott

36 papers, 271 citations

Gabriele Centi

15 papers, 385 citations

Junji Furukawa

15 papers, 178 citations

Alfred Dr. Pischtschan

13 papers, 102 citations

Minoru Imoto

13 papers, 73 citations