Host/guest complex of Me-β-CD/2,2-dimethoxy-2-phenyl acetophenone for initiation of aqueous photopolymerization: Kinetics and mechanism

Li, ShuJing; Wu, Feipeng; Li, MiaoZhen; Wang, Erjian

doi:10.1016/j.polymer.2005.10.060

Cited by 25 publications

(11 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[34,35] DMPA is a water-insoluble photoinitiator that leads to one benzoyl radical PhO ð Þand one methyl radical Me ð Þby a multi-step photolytic mechanism. [36] DBP is one of the most well-known diacyl peroxides used as radical initiator at moderate temperatures. It is not water-soluble and decomposes through the cleavage of the weakest oxygenoxygen bond into carbon dioxide and two phenyl radicals Ph ð Þ.…”

Section: Resultsmentioning

confidence: 99%

Initiation Kinetics in Free‐Radical Polymerization: Prediction of Thermodynamic and Kinetic Parameters Based on ab initio Calculations

Dossi

Storti

Moscatelli

2010

Macro Theory & Simulations

View full text Add to dashboard Cite

Initiation kinetics in free radical polymerization is investigated using density functional theory. Thermodynamic and kinetic parameters of the initiation reactions are predicted, and the role of the initiators in the polymerization process is evaluated. Methyl acrylate, methyl methacrylate, acrylonitrile, and styrene homo‐polymerizations with different initiators are studied. Reaction enthalpy and activation energy for each reaction between monomer and the radical fragments arising from the initiators have been determined. The initiation kinetic constants for all of these initiation reactions are evaluated and compared with both computational and experimental propagation kinetic constants of each monomer.magnified image

show abstract

Section: Resultsmentioning

confidence: 99%

Initiation Kinetics in Free‐Radical Polymerization: Prediction of Thermodynamic and Kinetic Parameters Based on ab initio Calculations

Dossi

Storti

Moscatelli

2010

Macro Theory & Simulations

View full text Add to dashboard Cite

show abstract

“…Recently, Wu et al reported a water‐soluble complex of the MβCD and DMPA and gave a preliminarily result about the mechanism of acrylamide (AM) polymerization 9. Our research is to develop water‐soluble benzoin ethers through self‐assembled between MβCD and DMPA to form supramolecular‐structured photoinitiator (SSPI).…”

Section: Introductionmentioning

confidence: 94%

“…Among photopolymerization system, the photoinitiators are very important components. Great attention has been paid to synthesize new water‐soluble photoinitiators in recent years 6–10. It was well known that the water solubility of oil‐soluble photoinitiators could be increased through two methods: firstly, introduction of hydrophilic groups, such as ethoxyethers, to photoinitiator molecules; secondly, attachment of ionic groups, such as quaternary ammonium salts, carboxylic acids, or sulphonic acid, to photoinitiator molecules 6, 11, 12.…”

Section: Introductionmentioning

confidence: 99%

A water‐soluble supramolecular‐structured photoinitiator between methylated β‐cyclodextrin and 2,2‐dimethoxy‐2‐phenylacetophenone

Wang

Jiang

Yin

2007

J of Applied Polymer Sci

View full text Add to dashboard Cite

A water-soluble supramolecular-structured photoinitiator (SSPI) was synthesized by supramolecular selfassembling between methylated b-cyclodextrin (MbCD) and hydrophobic 2,2-dimethoxy-2-phenylacetophenone (DMPA). The structure of SSPI was characterized by X-ray diffraction, FTIR, 1 H NMR, UV-vis, and fluorescence spectra. The results indicated that MbCD and DMPA had formed 1 : 1 inclusion complex in methanol solution. The binding constant (K) for the complex was 7.51 3 10 2 M 21 . SSPI could be dissolved in water easily and its water-solubility was 15.3 g/ 100 mL. SSPI was the more efficient photoinitiator than DMPA for the photopolymerization of acrylamide (AM) in homogeneous aqueous system. The conversion for photopolymerization of trimethylolpropane triacrylate system initiated by SSPI was similar to that initiated by DMPA.

show abstract

“…[10][11][12][13][14][15][16][17] The second method is the formation of supermolecules of an oilsoluble photoinitiator with b-cyclodextrin. [18][19][20][21][22][23][24] The third approach is the copolymerization of water-soluble monomers, such as acrylamide (Am), with an oil-soluble photoinitiator. 9,25-29 2-Hydroxyl-2-methyl-1-phenylpropanone (HMPP) has been widely used in UV curing systems as a low-cost and efficient type I photoinitiator.…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of an amphiphilic macrophotoinitiator based on 2‐hydroxyl‐2‐methyl‐1‐phenylpropanone

Xie

Huang

2016

J of Applied Polymer Sci

View full text Add to dashboard Cite

On the basis of 2-hydroxyl-2-methyl-1-phenylpropanone (HMPP) and poly(ethylene glycol) (PEG), we prepared amphiphilic macrophotoinitiators (HMPP-PEG-HMPP) by first reacting HMPP with isophorone diisocyanate and subsequently reacting it with PEGs with different chain lengths. Fourier transform infrared spectroscopy, high-performance liquid chromatography, and 1 H-NMR were used to confirm the structure of the amphiphilic macrophotoinitiators. Ultraviolet (UV) absorption spectra showed that the amphiphilic macrophotoinitiators had maximum absorption wavelengths that were similar to those of the low-molecular-weight photoinitiator HMPP. The photolysis rate of the amphiphilic macrophotoinitiators was slightly lower than that of HMPP, but the migration rate of the amphiphilic macrophotoinitiators from a UV-cured matrix was much lower compared to that of HMPP. Because of their amphiphilic nature, these macrophotoinitiators may play roles as both photoinitiators and emulsifiers, and they have been applied to the solution polymerization of water-soluble monomer acrylamide in water and the emulsion polymerization of methyl methacrylate.

show abstract

Host/guest complex of Me-β-CD/2,2-dimethoxy-2-phenyl acetophenone for initiation of aqueous photopolymerization: Kinetics and mechanism

Cited by 25 publications

References 26 publications

Initiation Kinetics in Free‐Radical Polymerization: Prediction of Thermodynamic and Kinetic Parameters Based on ab initio Calculations

Initiation Kinetics in Free‐Radical Polymerization: Prediction of Thermodynamic and Kinetic Parameters Based on ab initio Calculations

A water‐soluble supramolecular‐structured photoinitiator between methylated β‐cyclodextrin and 2,2‐dimethoxy‐2‐phenylacetophenone

Preparation and characterization of an amphiphilic macrophotoinitiator based on 2‐hydroxyl‐2‐methyl‐1‐phenylpropanone

Contact Info

Product

Resources

About