Interactions between microfibrillar cellulose and carboxymethyl cellulose in an aqueous suspension
New microstructures with interesting, unique and stable textures, particularly relevant to food systems were created by redispersing Microfibrillar cellulose (MFC). This paper reports the interactions between microfibrillar cellulose and carboxymethyl cellulose (CMC) in redispersed aqueous suspensio...
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Elsevier
2018
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| Online Access: | https://eprints.nottingham.ac.uk/50015/ |
| _version_ | 1848798129840717824 |
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| author | Agarwal, Deepa Macnaughtan, William Foster, Tim |
| author_facet | Agarwal, Deepa Macnaughtan, William Foster, Tim |
| author_sort | Agarwal, Deepa |
| building | Nottingham Research Data Repository |
| collection | Online Access |
| description | New microstructures with interesting, unique and stable textures, particularly relevant to food systems were created by redispersing Microfibrillar cellulose (MFC). This paper reports the interactions between microfibrillar cellulose and carboxymethyl cellulose (CMC) in redispersed aqueous suspensions, by using rheological measurements on variable ratios of MFC/CMC and correlating these with apparent water mobility as determined by time domain NMR. MFC is a network of cellulose fibrils produced by subjecting pure cellulose pulp to high-pressure mechanical homogenisation. A charged polymer such as CMC reduces the aggregation of microfibrillar/fibre bundles upon drying. Small amplitude oscillatory rheological analysis showed the viscoelastic gel-like behaviour of suspensions which was independent of the CMC content in the MFC suspension. A viscous synergistic effect was observed when CMC was added to MFC before drying, leading to improved redispersibility of the suspension. Novel measurements of NMR relaxation suggested that the aggregated microfibrillar/fibre bundles normally dominate the relaxation times (T2). The dense microfibrillar network plays an important role in generating stable rheological properties and controlling the mobility of the polymer and hence the apparent mobility of the water in the suspensions. |
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| format | Article |
| id | nottingham-50015 |
| institution | University of Nottingham Malaysia Campus |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T20:14:52Z |
| publishDate | 2018 |
| publisher | Elsevier |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | nottingham-500152019-01-02T04:30:31Z https://eprints.nottingham.ac.uk/50015/ Interactions between microfibrillar cellulose and carboxymethyl cellulose in an aqueous suspension Agarwal, Deepa Macnaughtan, William Foster, Tim New microstructures with interesting, unique and stable textures, particularly relevant to food systems were created by redispersing Microfibrillar cellulose (MFC). This paper reports the interactions between microfibrillar cellulose and carboxymethyl cellulose (CMC) in redispersed aqueous suspensions, by using rheological measurements on variable ratios of MFC/CMC and correlating these with apparent water mobility as determined by time domain NMR. MFC is a network of cellulose fibrils produced by subjecting pure cellulose pulp to high-pressure mechanical homogenisation. A charged polymer such as CMC reduces the aggregation of microfibrillar/fibre bundles upon drying. Small amplitude oscillatory rheological analysis showed the viscoelastic gel-like behaviour of suspensions which was independent of the CMC content in the MFC suspension. A viscous synergistic effect was observed when CMC was added to MFC before drying, leading to improved redispersibility of the suspension. Novel measurements of NMR relaxation suggested that the aggregated microfibrillar/fibre bundles normally dominate the relaxation times (T2). The dense microfibrillar network plays an important role in generating stable rheological properties and controlling the mobility of the polymer and hence the apparent mobility of the water in the suspensions. Elsevier 2018-04-01 Article PeerReviewed application/pdf en https://eprints.nottingham.ac.uk/50015/1/DA_Manuscript_Authors%20Accepted_081217.pdf Agarwal, Deepa, Macnaughtan, William and Foster, Tim (2018) Interactions between microfibrillar cellulose and carboxymethyl cellulose in an aqueous suspension. Carbohydrate Polymers, 185 . pp. 112-119. ISSN 1879-1344 Microfibrillar cellulose ; Carboxymethyl cellulose ; Low-field NMR ; Relaxation time ; Rheology https://www.sciencedirect.com/science/article/pii/S0144861717315035 doi:10.1016/j.carbpol.2017.12.086 doi:10.1016/j.carbpol.2017.12.086 |
| spellingShingle | Microfibrillar cellulose ; Carboxymethyl cellulose ; Low-field NMR ; Relaxation time ; Rheology Agarwal, Deepa Macnaughtan, William Foster, Tim Interactions between microfibrillar cellulose and carboxymethyl cellulose in an aqueous suspension |
| title | Interactions between microfibrillar cellulose and carboxymethyl cellulose in an aqueous suspension |
| title_full | Interactions between microfibrillar cellulose and carboxymethyl cellulose in an aqueous suspension |
| title_fullStr | Interactions between microfibrillar cellulose and carboxymethyl cellulose in an aqueous suspension |
| title_full_unstemmed | Interactions between microfibrillar cellulose and carboxymethyl cellulose in an aqueous suspension |
| title_short | Interactions between microfibrillar cellulose and carboxymethyl cellulose in an aqueous suspension |
| title_sort | interactions between microfibrillar cellulose and carboxymethyl cellulose in an aqueous suspension |
| topic | Microfibrillar cellulose ; Carboxymethyl cellulose ; Low-field NMR ; Relaxation time ; Rheology |
| url | https://eprints.nottingham.ac.uk/50015/ https://eprints.nottingham.ac.uk/50015/ https://eprints.nottingham.ac.uk/50015/ |