Online‐Analysis on Acoustically Levitated Droplets

Biedasek, Silke; Abboud, Mohammed; Moritz, Hans‐Ulrich; Stammer, Achim

doi:10.1002/masy.200751344

Cited by 8 publications

(4 citation statements)

References 4 publications

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“…Sample aPA6‐I was synthesized using the anionic process without foaming, and aPA6‐II was synthesized by anionic ring opening polymerization using a patented foaming step (BASF SE) to achieve high crystallinity. [ 9,33 ]…”

Section: Methodsmentioning

confidence: 99%

Improving the picture of atomic structure in nonoriented polymer domains using the pair distribution function: A study of polyamide 6

Terban

Pütz

Savaşçı

et al. 2020

Journal of Polymer Science

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Investigations of the atomic structures within polyamides started over 80 years ago and continue today. These weakly ordered materials diffract X‐rays poorly and typically require postprocessing to obtain idealized samples for structural studies. An important goal remains to develop techniques to study the local structure in its natural state, with atomic resolution, and with sensitivity to subtle changes due to synthesis conditions or other technologically relevant processing procedures. Here, we compare the structures of as‐produced, nonoriented polyamide 6 ([C6H11NO] n) from both hydrolytic and anionic processes. A total scattering pair distribution function approach is used to elucidate information about the atomic bonding, molecular conformation, chain packing, crystallite size, and ratio of ordered to disordered domain content. The results are compared with those from standard analytical methods.

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Section: Methodsmentioning

confidence: 99%

Improving the picture of atomic structure in nonoriented polymer domains using the pair distribution function: A study of polyamide 6

Terban

Pütz

Savaşçı

et al. 2020

Journal of Polymer Science

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“…Finally, Biedasek et al497 presented an interesting use of this type of spectroscopy. In their study of aerosols, they monitored and quantified the chemical composition in a levitated droplet with Raman spectroscopy.…”

Section: On‐line Sensors For Polymer Property Trajectory Monitoringmentioning

confidence: 99%

A Critical Overview of Sensors for Monitoring Polymerizations

Fonseca

Dubé

Penlidis

2009

Macro Reaction Engineering

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The available on‐line and in‐line sensor technologies developed for polymerization reactors from 1990 until today are discussed and critically reviewed. About 600 references are included, which evidence the growth in sensor technology in the last two decades. Sensors for operational parameters in polymer reactors (i.e. temperature, pressure, level and flow) as well as sensors for polymer property monitoring (i.e. calorimetry, chromatography and spectroscopy, among others) are included. Complementary topics such as state estimation, multivariate statistical methods, fault diagnosis techniques and optimal sensor selection and location are briefly covered.

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“…The amount of residual monomer was determined by HPLC. 9 Earlier work reported in situ mass spectrometry of levitated droplets by means of charge assisted laser desorption/ ionization (CALDI). 10,11 The objective of this work was to demonstrate the suitability of performing a polymerization in a levitated droplet.…”

Section: Introductionmentioning

confidence: 99%