Porous graphite as platform for the separation and characterization of synthetic polymers–an overview

D Kot, T Macko, JH Arndt, R Brüll - Journal of Chromatography A, 2019 - Elsevier
Porous graphite as sorbent differs significantly from all other HPLC column packings. It
stands out due to its chemically extremely homogeneous surface, which moreover is planar …

Multidimensional analytical protocols for the fractionation and analysis of complex polyolefins

H Pasch, A Ndiripo, PSE Bungu - Journal of Polymer Science, 2022 - Wiley Online Library
Although produced from simple monomers that contain just carbon and hydrogen, polyolefin
have complex molecular structures that are characterized by distributions in molar mass …

Advanced liquid chromatography of polyolefins using simultaneous solvent and temperature gradients

A Ndiripo, A Albrecht, H Pasch - Analytical Chemistry, 2020 - ACS Publications
Olefin copolymers are complex polymer materials that exhibit multiple distributions in
molecular properties such as molar mass, chemical composition, and branching. To address …

Characterization of polyolefins

MI Malik, H Pasch - Molecular Characterization of Polymers, 2021 - Elsevier
Polyolefins constitute half of the annual polymer production worldwide. Polyolefins pose
special challenges for their analysis owing to their semicrystalline nature and insolubility in …

Temperature rising elution fractionation and fraction characterization of trans-1, 4-poly (isoprene-co-butadiene)

H Shao, S Ren, R Wang, A He - Polymer, 2020 - Elsevier
In order to analyze the chain structure and sequence distribution of trans-1, 4-poly (isoprene-
co-butadiene) copolymers (TBIR) with different butadiene content, a preparative …

Retention of polypropylene stereoisomers in solvent gradient interaction chromatography on porous graphitic carbon as influenced by temperature and mobile phase …

A Ndiripo, H Pasch - Journal of Chromatography A, 2020 - Elsevier
The behavior of isotactic, syndiotactic and atactic polypropylene stereoisomers on porous
graphitic carbon (PGC) at different column temperatures is investigated with 1-decanol …

Eluent Gradient Interaction Chromatography

MI Malik, D Berek - Liquid Chromatography of Synthetic Polymers: Entropy …, 2023 - Springer
The chapter focuses on phenomenon of entropy/enthalpy compensation during the
chromatographic run by continuous change in the mobile phase (eluent) composition. The …