Effects of photo-initiation and monomer composition onto performance of graft-copolymer based membrane adsorbers
Photo-initiated surface-selective graft copoly- merisation onto polypropylene (PP) microfiltration membranes is an improved method to prepare porous membrane adsorbers [1]. The potential versatility and economic value of this method motivated us to further investigate main parame- ters for control o...
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| Format: | Article |
| Language: | English |
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Elsevier
2006
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| Online Access: | http://eprints.utm.my/102/1/AbdulHalimMohdYusof2006_EffectOfPhotoInitiationAndMonomerComposition.pdf |
| _version_ | 1825908845604503552 |
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| author | Mohd Yusof, Abdul Halim Mathias, Ulbricht |
| author_facet | Mohd Yusof, Abdul Halim Mathias, Ulbricht |
| author_sort | Mohd Yusof, Abdul Halim |
| collection | ePrints |
| description | Photo-initiated surface-selective graft copoly- merisation onto polypropylene (PP) microfiltration membranes is an improved method to prepare porous membrane adsorbers [1]. The potential versatility and economic value of this method motivated us to further investigate main parame- ters for control of membrane adsorber function- ality. In this work we studied the influence of photo initiator concentration and entrapping time in the initiator immobilization step and of monomer solution composition in the photo- grafting step. Benzophone (BP) dissolved in heptane was used in the photo initiator coating step. The functional monomer acrylic acid (AA), the diluent monomer acrylamide (AAm) and the cross-linker methylene bisacrylamide (MBAA) were used to prepare grafted copoly- mer layers with weak cation-exchange groups in the second step. For the characterization we focussed on the degree of grafting (DG) via gravimetry, ATR-IR spectroscopy, membrane permeability as a function of solution pH and ionic strength and dynamic protein binding capacities and recovery from membrane chro- matography experiments. Using the membranes with best performance, the separation of protein mixture was also investigated. |
| first_indexed | 2024-03-05T17:53:24Z |
| format | Article |
| id | utm.eprints-102 |
| institution | Universiti Teknologi Malaysia - ePrints |
| language | English |
| last_indexed | 2024-03-05T17:53:24Z |
| publishDate | 2006 |
| publisher | Elsevier |
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| spelling | utm.eprints-1022017-08-22T06:23:43Z http://eprints.utm.my/102/ Effects of photo-initiation and monomer composition onto performance of graft-copolymer based membrane adsorbers Mohd Yusof, Abdul Halim Mathias, Ulbricht TP Chemical technology Photo-initiated surface-selective graft copoly- merisation onto polypropylene (PP) microfiltration membranes is an improved method to prepare porous membrane adsorbers [1]. The potential versatility and economic value of this method motivated us to further investigate main parame- ters for control of membrane adsorber function- ality. In this work we studied the influence of photo initiator concentration and entrapping time in the initiator immobilization step and of monomer solution composition in the photo- grafting step. Benzophone (BP) dissolved in heptane was used in the photo initiator coating step. The functional monomer acrylic acid (AA), the diluent monomer acrylamide (AAm) and the cross-linker methylene bisacrylamide (MBAA) were used to prepare grafted copoly- mer layers with weak cation-exchange groups in the second step. For the characterization we focussed on the degree of grafting (DG) via gravimetry, ATR-IR spectroscopy, membrane permeability as a function of solution pH and ionic strength and dynamic protein binding capacities and recovery from membrane chro- matography experiments. Using the membranes with best performance, the separation of protein mixture was also investigated. Elsevier 2006-11-20 Article PeerReviewed application/pdf en http://eprints.utm.my/102/1/AbdulHalimMohdYusof2006_EffectOfPhotoInitiationAndMonomerComposition.pdf Mohd Yusof, Abdul Halim and Mathias, Ulbricht (2006) Effects of photo-initiation and monomer composition onto performance of graft-copolymer based membrane adsorbers. Desalination, 200 (1-3). pp. 462-463. ISSN 0011-9164 http://dx.doi.org/10.1016/j.desal.2006.03.357 10.1016/j.desal.2006.03.357 |
| spellingShingle | TP Chemical technology Mohd Yusof, Abdul Halim Mathias, Ulbricht Effects of photo-initiation and monomer composition onto performance of graft-copolymer based membrane adsorbers |
| title | Effects of photo-initiation and monomer composition onto performance of graft-copolymer based membrane adsorbers |
| title_full | Effects of photo-initiation and monomer composition onto performance of graft-copolymer based membrane adsorbers |
| title_fullStr | Effects of photo-initiation and monomer composition onto performance of graft-copolymer based membrane adsorbers |
| title_full_unstemmed | Effects of photo-initiation and monomer composition onto performance of graft-copolymer based membrane adsorbers |
| title_short | Effects of photo-initiation and monomer composition onto performance of graft-copolymer based membrane adsorbers |
| title_sort | effects of photo initiation and monomer composition onto performance of graft copolymer based membrane adsorbers |
| topic | TP Chemical technology |
| url | http://eprints.utm.my/102/1/AbdulHalimMohdYusof2006_EffectOfPhotoInitiationAndMonomerComposition.pdf |
| work_keys_str_mv | AT mohdyusofabdulhalim effectsofphotoinitiationandmonomercompositionontoperformanceofgraftcopolymerbasedmembraneadsorbers AT mathiasulbricht effectsofphotoinitiationandmonomercompositionontoperformanceofgraftcopolymerbasedmembraneadsorbers |