UV LED curing formulation for polyacrylamide hydrogels
Current studies showed that UV LED system is a green technology and highly efficient as compared to UV Mercury (UV Hg) system. In this study, the UV LED curing formulations of polyacrylamide (PAAm) hydrogels were developed. The formulations consisted of acrylamide (AAm) as a main monomer, N,N’-methy...
Saved in:
Main Authors: | , , , , |
---|---|
Format: | Conference or Workshop Item |
Published: |
2015
|
Subjects: | |
Online Access: | http://eprints.utm.my/id/eprint/60815/ https://www.scientific.net/AMR.1125.84 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Universiti Teknologi Malaysia |
id |
my.utm.60815 |
---|---|
record_format |
eprints |
spelling |
my.utm.608152017-09-27T04:22:01Z http://eprints.utm.my/id/eprint/60815/ UV LED curing formulation for polyacrylamide hydrogels Ayub, Nur Farizah Hashim, Shahrir Jamaluddin, Jamarosliza Ali, Roshafima Rasit Adrus, Nadia QD Chemistry Current studies showed that UV LED system is a green technology and highly efficient as compared to UV Mercury (UV Hg) system. In this study, the UV LED curing formulations of polyacrylamide (PAAm) hydrogels were developed. The formulations consisted of acrylamide (AAm) as a main monomer, N,N’-methylenebisacrylamide as a crosslinker and photoinitiator. UV LED emits monochromatic light sources only (365 nm or 385 nm). Thus, in order to developed formulation of UV LED curable hydrogels, a suitable water soluble photoinitiator (i.e. λ ~ 365 nm) has to be employed. A commercially available photoinitiator Oligo [2-hydroxy-2-methyl-1-[4-(1-methylvinyl) phenyl] propanone] under the trade name Chivacure 300 (λ ~ 330 nm) was chosen in the first formulations. However, due to limited solubility in water, addition of tetrahydrofuran (THF) at 9.5:0.5 ratio of water/THF was required for Chivacure 300. We also synthesized a photoinitiator based on 2,2-dimethoxy-2-phenyl acetophenone (DMPA) and methylated-ß-cyclodextrin (MßCD) to be used in the second formulation. The complexation of DMPA and MßCD resulted in transparent and water-soluble supramolecular-structured photoinitiator (SSPI) (λ ~ 330 nm). Both formulations were irradiated using UV LED system (Hoenle AG, Germany, 365 nm) for 15 min. Synthesis of PAAm hydrogels with both photoinitiators has yielded almost complete conversion of hydrogels (> 80 %). Clearly, this study has revealed that enhanced formulation of UV LED curable hydrogels are due to appropriate choice of excellent water-solubility photoinitiators (Chivacure 300 and modified DMPA). We concluded that UV LED is an important tool for curing hydrogel formulations of various acrylate water-based monomers. 2015 Conference or Workshop Item PeerReviewed Ayub, Nur Farizah and Hashim, Shahrir and Jamaluddin, Jamarosliza and Ali, Roshafima Rasit and Adrus, Nadia (2015) UV LED curing formulation for polyacrylamide hydrogels. In: Conference. https://www.scientific.net/AMR.1125.84 |
institution |
Universiti Teknologi Malaysia |
building |
UTM Library |
collection |
Institutional Repository |
continent |
Asia |
country |
Malaysia |
content_provider |
Universiti Teknologi Malaysia |
content_source |
UTM Institutional Repository |
url_provider |
http://eprints.utm.my/ |
topic |
QD Chemistry |
spellingShingle |
QD Chemistry Ayub, Nur Farizah Hashim, Shahrir Jamaluddin, Jamarosliza Ali, Roshafima Rasit Adrus, Nadia UV LED curing formulation for polyacrylamide hydrogels |
description |
Current studies showed that UV LED system is a green technology and highly efficient as compared to UV Mercury (UV Hg) system. In this study, the UV LED curing formulations of polyacrylamide (PAAm) hydrogels were developed. The formulations consisted of acrylamide (AAm) as a main monomer, N,N’-methylenebisacrylamide as a crosslinker and photoinitiator. UV LED emits monochromatic light sources only (365 nm or 385 nm). Thus, in order to developed formulation of UV LED curable hydrogels, a suitable water soluble photoinitiator (i.e. λ ~ 365 nm) has to be employed. A commercially available photoinitiator Oligo [2-hydroxy-2-methyl-1-[4-(1-methylvinyl) phenyl] propanone] under the trade name Chivacure 300 (λ ~ 330 nm) was chosen in the first formulations. However, due to limited solubility in water, addition of tetrahydrofuran (THF) at 9.5:0.5 ratio of water/THF was required for Chivacure 300. We also synthesized a photoinitiator based on 2,2-dimethoxy-2-phenyl acetophenone (DMPA) and methylated-ß-cyclodextrin (MßCD) to be used in the second formulation. The complexation of DMPA and MßCD resulted in transparent and water-soluble supramolecular-structured photoinitiator (SSPI) (λ ~ 330 nm). Both formulations were irradiated using UV LED system (Hoenle AG, Germany, 365 nm) for 15 min. Synthesis of PAAm hydrogels with both photoinitiators has yielded almost complete conversion of hydrogels (> 80 %). Clearly, this study has revealed that enhanced formulation of UV LED curable hydrogels are due to appropriate choice of excellent water-solubility photoinitiators (Chivacure 300 and modified DMPA). We concluded that UV LED is an important tool for curing hydrogel formulations of various acrylate water-based monomers. |
format |
Conference or Workshop Item |
author |
Ayub, Nur Farizah Hashim, Shahrir Jamaluddin, Jamarosliza Ali, Roshafima Rasit Adrus, Nadia |
author_facet |
Ayub, Nur Farizah Hashim, Shahrir Jamaluddin, Jamarosliza Ali, Roshafima Rasit Adrus, Nadia |
author_sort |
Ayub, Nur Farizah |
title |
UV LED curing formulation for polyacrylamide hydrogels |
title_short |
UV LED curing formulation for polyacrylamide hydrogels |
title_full |
UV LED curing formulation for polyacrylamide hydrogels |
title_fullStr |
UV LED curing formulation for polyacrylamide hydrogels |
title_full_unstemmed |
UV LED curing formulation for polyacrylamide hydrogels |
title_sort |
uv led curing formulation for polyacrylamide hydrogels |
publishDate |
2015 |
url |
http://eprints.utm.my/id/eprint/60815/ https://www.scientific.net/AMR.1125.84 |
_version_ |
1643654985263611904 |