4.6 Article

Investigation of interdiffusion between compatible polymers under static and co-extrusion processing conditions

相关参考文献

注意:仅列出部分参考文献,下载原文获取全部文献信息。
Proceedings Paper Polymer Science

A Numerical Study of Interdiffusion Processes at Polymer Polymer Interfaces

Alexander Hammer et al.

Summary: Numerous plastic products are manufactured using processing techniques that enable the combination of different polymeric materials within multilayer structures to obtain tailored properties. Understanding and predicting the interdiffusion process between polymer melts is crucial for efficient manufacturing processes and optimized multilayer plastic products.

PROCEEDINGS OF THE 36TH CONFERENCE OF THE POLYMER PROCESSING SOCIETY, PPS36 (2023)

Proceedings Paper Polymer Science

Characterization of Interdiffusion Between Different Co Extruded Polymers via Confocal Raman Microscopy

Claudia Leimhofer et al.

Summary: Adhesion between individual layers is crucial for polymer multilayer materials. Interdiffusion, the interpenetration of macromolecules across the interface, is the main adhesion mechanism. Confocal Raman microscopy is an excellent tool for characterizing the diffuse interphase. This work develops a procedure to determine diffusion profiles and interdiffusion layer thickness based on Raman imaging, providing insights into phenomena at polymer-polymer interfaces.

PROCEEDINGS OF THE 36TH CONFERENCE OF THE POLYMER PROCESSING SOCIETY, PPS36 (2023)

Article Engineering, Chemical

Two antagonistic effects of flow/mixing on reactive polymer blending

Wei-Yun Ji et al.

Summary: This study reveals that in reactive polymer blending, flow/mixing can both promote copolymer formation by creating interfaces and enhance collisions between reactive groups, as well as potentially pull the copolymer out of the interfaces and migrate it to one of the two polymer components of the blend, reducing its compatibilization efficiency.

AICHE JOURNAL (2022)

Article Engineering, Chemical

Experimental validation of non-Newtonian stratified co-extrusion prediction models using a digital process twin

Alexander Hammer et al.

Summary: This study validates the models of crucial parameters in co-extrusion processes through experiments and compares them with existing theories. The experimental results show excellent agreement between the predicted values and the actual data, outperforming the concept of representative viscosity.

POLYMER ENGINEERING AND SCIENCE (2022)

Review Engineering, Manufacturing

Understanding the factors affecting the seal integrity in heat sealed flexible food packages: A review

Ilknur Ilhan et al.

Summary: This review focuses on the importance of heat sealing in food packaging and the factors leading to seal integrity problems, aiming to maintain food quality and prevent waste. By analyzing heat sealing mechanisms, form fill seal systems, and seal types, factors affecting leak formation were categorized, and their interrelationships were discussed.

PACKAGING TECHNOLOGY AND SCIENCE (2021)

Review Polymer Science

Interfacial Phenomena in Multi-Micro-/Nanolayered Polymer Coextrusion: A Review of Fundamental and Engineering Aspects

Bo Lu et al.

Summary: This paper comprehensively reviews the interfacial phenomena in multilayer coextrusion process, including interlayer diffusion, interlayer reaction, interfacial instabilities, and interfacial geometrical confinement, which are critical in defining the microstructural development and macroscopic properties of multilayered products.

POLYMERS (2021)

Article Mechanics

Predicting the co-extrusion flow of non-Newtonian fluids through rectangular ducts - A hybrid modeling approach

Alexander Hammer et al.

Summary: Co-extrusion is the leading process technology in polymer processing across various application areas, allowing for the creation of products with a wide range of properties through combining different polymeric materials in multilayer structures. Designing co-extrusion dies and feedblock systems requires extensive knowledge of process and material behavior, with numerical methods being essential for accurately describing the shear-thinning behavior of polymer melts and predicting process quantities. A hybrid approach to modeling stratified co-extrusion flows of two power-law fluids through rectangular ducts was presented, identifying four independent influencing parameters that fully describe the flow situation and allowing for the creation of mathematical models to accurately predict process quantities in two-layer co-extrusion flows.

JOURNAL OF NON-NEWTONIAN FLUID MECHANICS (2021)

Article Polymer Science

In Situ Detection of Interfacial Flow Instabilities in Polymer Co-Extrusion Using Optical Coherence Tomography and Ultrasonic Techniques

Alexander Hammer et al.

Summary: This study introduces a method of real-time measurement using a novel die during co-extrusion to distinguish between stable and unstable flow conditions, aiming to improve the fundamental knowledge of instability onset.

POLYMERS (2021)

Article Spectroscopy

Tracking high molecular weight polymer interdiffusion on a SERS-based platform

Carla D. Mana et al.

JOURNAL OF RAMAN SPECTROSCOPY (2017)

Review Polymer Science

Adhesion of polymers

Firas Awaja et al.

PROGRESS IN POLYMER SCIENCE (2009)

Article Engineering, Chemical

Local residence time, residence revolution, and residence volume distributions in twin-screw extruders

Xian-Ming Zhang et al.

POLYMER ENGINEERING AND SCIENCE (2008)

Article Engineering, Chemical

Reaction kinetics of multiphase polymer systems under flow

LF Feng et al.

AICHE JOURNAL (2004)