Related Experiment Video
Updated: Apr 18, 2026
05:49
Laser Micromachining for Polymer Surface Topography Design
Published on: September 19, 2025
621
Laser-assisted high-pressure-induced polymerization of 2-(hydroxyethyl)methacrylate
E Evlyukhin1, L Museur, M Traore
1Laboratoire de Physique des Lasers, CNRS, Université Paris 13 , Sorbonne Paris Cité, 93430 Villetaneuse, France.
The Journal of Physical Chemistry. B
|January 31, 2015
Summary
High pressure enables room-temperature polymerization of 2-(hydroxyethyl)methacrylate (HEMA) without initiators. Laser irradiation significantly boosts reaction rates and yields, offering a promising synthesis method.
Area of Science:
- Polymer Chemistry
- Materials Science
- High-Pressure Physics
Background:
- 2-(hydroxyethyl)methacrylate (HEMA) is a versatile monomer.
- Conventional polymerization often requires initiators and specific temperature conditions.
Purpose of the Study:
- To investigate the feasibility of room-temperature polymerization of HEMA under high pressure.
- To explore the effect of laser irradiation on the polymerization process.
Main Methods:
- Compression of HEMA to pressures between 0.1 and 1.6 GPa at room temperature.
- Irradiation of compressed HEMA using lasers at 488 nm and 355 nm.
- Analysis of polymerization yield and reaction rate.
Main Results:
- Successful initiator-free polymerization of HEMA observed within the 0.1–1.6 GPa pressure range.
- Laser irradiation at 488 nm increased reaction rate by 10x; 355 nm irradiation increased it by 30x.
- UV laser irradiation (355 nm) resulted in an 84% polymerization yield.
Conclusions:
- High pressure and laser light catalyze HEMA polymerization via electron transfer.
- The process is irreversible and near-complete, suitable for practical synthesis.
- This method offers an efficient route for HEMA-based polymer production.
More Related Videos
Related Concept Videos
01:20Anionic Chain-Growth Polymerization: Overview
2.8K
The polymerization process that involves carbanion as an intermediate is called anionic polymerization. It is also a type of addition or chain-growth polymerization. Anionic polymerization gets initiated by a strong nucleophile such as an organolithium or a Grignard reagent. The most commonly used initiator for anionic polymerization is butyl lithium. Monomers involved in anionic polymerization must possess a vinyl group bonded to one or two electron-withdrawing groups. For instance,...
2.8K
01:03Step-Growth Polymerization: Overview
4.8K
Step-growth or condensation polymerization is a stepwise reaction of bi or multifunctional monomers to form long-chain polymers. As all the monomers are reactive, most of the monomers are consumed at the early stages of the reaction to form small chains of reactive oligomers, which then combine to form long polymer chains in the late stages. Hence, the reaction has to proceed for a long time to achieve high molecular weight polymers.
Many natural and synthetic polymers are produced by...
Many natural and synthetic polymers are produced by...
4.8K
00:53Olefin Metathesis Polymerization: Acyclic Diene Metathesis (ADMET)
2.3K
Acyclic diene metathesis polymerization or ADMET polymerization involves cross-metathesis of terminal dienes, such as 1,8-nonadiene, to give linear unsaturated polymer and ethylene. As ADMET is a reversible process, the formed ethylene gas must be removed from the reaction mixture to complete the polymerization process.
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
Similar to cross-metathesis, ADMET also involves the formation of metallacyclobutane intermediate by [2+2] cycloaddition of one of the double bonds of a terminal diene with...
2.3K