Recent advances in separation-based techniques for synthetic polymer characterization

DM Meunier, JH Wade, M Janco, R Cong… - Analytical …, 2020 - ACS Publications
Structure dictates a polymeric material's properties and ultimately its performance in the
marketplace. Elucidation of structural differences among polymer samples is therefore …

Advances in High-Temperature Interaction Chromatography of Polyolefins: A Tutorial on Solvent and Temperature Gradient

PZ Ndlovu, A Lederer - Analytical Chemistry, 2024 - ACS Publications
The advancement of high-temperature interaction chromatography (HT-IC) is a key
milestone in polyolefin characterization. Temperature gradient interaction chromatography …

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 …

Non-isothermal crystallization kinetics of polypropylene homopolymer/impact copolymer composites

P Wang, Y Wang, X Wang, Y Peng, S Liu - Journal of Thermal Analysis and …, 2023 - Springer
Crystallization kinetics of an isotactic homopolymer polypropylene (HPP), an impact
copolymer polypropylene (ICPP), and their composites were studied in this work. The …

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 …

Time/Molecular Weight Superposition to Describe the Behavior of Controlled-Rheology Polypropylenes

F Berzin, B Vergnes - Polymers, 2022 - mdpi.com
Polypropylene resins issuing from polymerization reactors are degraded by peroxides in
subsequent reactive extrusion processes to improve their processability. This operation …

Reverse Engineering of Chemically Similar Bimodal High Density Polyethylenes: A Comprehensive Study Using Advanced Chromatographic Techniques

A Ndiripo, H Lamola, PZ Ndlovu… - Macromolecular …, 2022 - Wiley Online Library
Bimodal high‐density polyethylene (bHDPE) is a complex, multicomponent polyethylene
(PE) material whose synthesis in a multistage process can be challenging. Three bHDPEs …

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 …

Two-Dimensional Liquid Chromatography

MI Malik, D Berek - Liquid Chromatography of Synthetic Polymers: Entropy …, 2023 - Springer
The chapter provides a comprehensive description of possibilities of coupling of different
modes of polymer LC. Approaches of two-dimensional analysis are followed by description …

Abundance of Microplastics in Mangrove Sediments on Pari Island, Jakarta Bay, Indonesia

IK Nugraheni, NP Zamani, MR Cordova - 2024 - researchsquare.com
Mangroves can become traps for plastic waste, so plastic waste has a long residence time
and then fragments into microplastics and settles in mangrove sediments. The health level of …