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A Soft Tooling Process Chain for Injection Molding of a 3D Component with Micro Pillars

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Thermo-Responsive Shape Memory Vanillin-Based Photopolymers for Microtransfer Molding.

Justinas Jaras¹, Aukse Navaruckiene¹, Edvinas Skliutas²

¹Department of Polymer Chemistry and Technology, Kaunas University of Technology, Radvilenu Rd. 19, LT-50254 Kaunas, Lithuania.

|June 24, 2022

Summary

This summary is machine-generated.

Novel vanillin-based photopolymers exhibit shape-memory properties. These bio-based materials are suitable for microtransfer molding, offering tunable thermal and mechanical characteristics for advanced applications.

Keywords:

bio-based polymers dual curing microtransfer molding photocuring shape-memory

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Area of Science:

Materials Science
Polymer Chemistry
Biomaterials Engineering

Background:

Development of advanced photopolymers for microfabrication is crucial.
Bio-based polymers offer sustainable alternatives to traditional materials.
Shape-memory polymers (SMPs) require precise control over thermal and mechanical properties.

Purpose of the Study:

To develop novel thermo-responsive, shape-memory vanillin-based photopolymers.
To investigate the influence of monomer ratios on photopolymer properties.
To evaluate the suitability of these photopolymers for microtransfer molding.

Main Methods:

Synthesis of photocurable resins using vanillin dimethacrylate, tridecyl methacrylate, and 1,3-benzenedithiol.
Tuning of thiol-acrylate photopolymerization and acrylate homopolymerization via monomer ratio adjustments.
Characterization of thermal and mechanical properties, and shape-memory behavior.
Testing of selected compositions using microtransfer molding.

Main Results:

A range of thermal and mechanical properties were achieved by altering monomer ratios.
All synthesized polymers exhibited excellent shape-memory capabilities, returning to their original shape after thermal programming.
Microtransfer molding tests demonstrated promising results for the developed photopolymer compositions.

Conclusions:

Vanillin-based photopolymers with thermo-responsive shape-memory properties have been successfully developed.
The materials demonstrate tunable properties and suitability for microtransfer molding techniques.
These bio-based photopolymers hold significant potential for creating microstructures and devices on non-flat surfaces.