July 2022 Vol. 1

MNA – The Latest Updates, News and Alerts on Polymer Masterbatches and Polymer Additives
Stay in Touch with the Polymer Additives Industry While Social Distancing 

NEWSMAKERS:  * Akdeniz Chemson * Ampacet * Avient * BASF * ExcelPlas * Graphene * HALS * Irgafos™ 168 * Irganox * LyondellBasell * Microplastics * NIR * SABIC * TruCircle™


Determination of Additives in Polymer Pellets by Near-infrared Spectroscopy

Avient Debuts Next-Generation Solutions to Facilitate Use of Recycled Plastics in Packaging Applications

Ampacet’s AgriStab™, Next-Generation UV Stabilizer Range, extends UV Resistance of Multi-season Greenhouse Films Subjected to High Pesticide Use

Avient Debuts Next-Generation Solutions to Facilitate Use of Recycled Plastics in Packaging Applications

Akdeniz Chemson Launches a New Zinc Borate Plant

Akdeniz Chemson World Leader in in PVC stabilizers is Named the Second Largest Chemical Exporter

Graphene Masterbatches for Flexible and Rigid Packaging

Determination of Contaminants in Polyolefin Recyclates by High-Performance Liquid Chromatography – Mass Spectrometry (HPLC-MS)

Release of Additives and Non-Intentionally Added Substances from Microplastics Under Environmentally Relevant Conditions

Studying the Influence of Polyethylene Microplastics’ Intrinsic and Extrinsic Characteristics on their Weathering Behaviour and Heavy Metal Transport in Storm Runoff

Environmental Hazard of Polypropylene: acute toxicity towards Daphnia magna and current knowledge on other polypropylene microplastics

Dangers of Oxodegradable Plastic Fragments
Nanoplastic Generation from Secondary PE Microplastics: Microorganism-Induced Fragmentation

Equilibrium leaching of Selected Ultraviolet Stabilizers from Plastic Products

Effects of Organic Based Heat Stabilizer on Properties of Polyvinyl Chloride for Pipe Applications: A Comparative Study with Pb and Ca/Zn Systems

Rheological Properties and Dynamic Thermal Stability of PVC/La L2/Ca‐Zn Composite Stabilizer for PVC Pipes

First Record of Plastiglomerates, Pyroplastics, and Plasticrusts in South America

Analysis of Mechanical Property Degradation of Outdoor Weather-Exposed Polymers [PDF]

BASF’s IrgaCycle™ Stabilizes Recycled Plastics Used to Protect Pineapples from Sunburn in Malaysia

Endocrine-Disrupting Chemicals Used as Common Plastic Additives: Levels, Profiles, and Human Dietary Exposure from the Indian Food Basket

Controlled Wettability of Polymers via Environmental Crazing

BASF: Material Said to Purify Pyrolysis Oils Made from Waste Plastics

Chevron Phillips Chemical (CPChem) has Completed the First Commercial Sales of its Marlex Anew circular polyethylene (PE)

How to Fuel a Sustainable Future for Packaging

Dow to Start Supplying Circular Polymers to Customers in 2022

Nanotubes: a Promising Solution for Advanced Rubber Cables with 60% Less Conductive Filler

Ageing Evaluation of PE Cotaining Irganox PS 802 Subjected to Radiation Ageing: Application of principal component analyses to Fourier Transform Infra-Red and dielectric spectroscopy

Consequences of Radiothermal Ageing on the Crystalline Morphology of Additive-Free Silane-Crosslinked Polyethylene

Characterization of LDPE: a Thermal, Dynamic Mechanical, and Rheological Investigation

Flame Retardant Coatings: Additives, Binders, and Fillers

Moisture and Oxygen Barrier Properties of Glass, PET and HDPE Bottles for Pharmaceutical Products

Finite Element Analysis of High-Density Polyethylene (HDPE) Nanocomposites

Verification Testing of Recycled Plastics and the Role of Testing by ExcelPlas Labs
Polymer degradation has an immediate impact on the final plastic product and its properties. In the plastic extrusion process, increased temperatures, as a result of the melt processing, in combination with the time that polymers spend in the barrel, can influence the molecular weight of the extrudates.
The mechanical shear from the screw’s rotation, especially in cases of rapid extrusion, can lead to degradation and chain scission in polymer molecules.
Scission of long molecules, as a result of degradation, relates to an increase of melt flow index (MFI) or a decrease in the overall IV level. On the other hand, degradation can also lead to cross-linking of decomposed polymers, which can lead to an increase in IV or a decrease in MFI.
Conducting rheological measurements of a compound before, during and after the melt processing is an effective way to identify if any thermomechanical degradation has taken place throughout the extrusion process
Why is it Important to Avoid Degradation and Keep Polymers in Specification?
Polymer degradation has an immediate impact on the characteristics of the final plastic product.
Changes in molecular weight impact short-term and long-term characteristics such as fatigue resistance, impact resistance and environmental stress cracking resistance.
As recycling standards state that corporations must incorporate a certain percentage of recycled content, it is vital to keep producers’ reprocessed scrap or the purchased recycled material as close as possible to their pure product’s specifications to preserve quality.
Also, the polymer is a “blind item.” Recyclers and manufacturers are not able to determine the polymers’ specifications just by visual inspection alone.
Verification of the rheological properties of polymers is critically important to minimize degradation during the recycling process and to ensure that the polymer does not degrade and negatively impact the quality of the product


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