985 45 14737 4 45849 document 14737 Dataset_Polymers Journal.zip application/zip b650a3096771b2ecbb02b48d155a1db5 MD5 2493824 2021-03-15 10:39:21 https://researchdata.bath.ac.uk/985/1/Dataset_Polymers%20Journal.zip 985 1 1 application/zip other Dataset for 'Monovalent salt and pH-induced gelation of oxidised cellulose nanofibrils and starch networks: combining rheology and small-angle X-ray scattering' en public cc_by

Dataset_Polymers Journal.zip

data archive 9889 disk0/00/00/09/85 2021-03-24 12:25:21 2024-07-22 09:52:16 2021-03-24 12:25:21 data_collection show Hossain Kazi M. Zakir zh603@bath.ac.uk 0000-0002-4178-7271 University of Bath TRUE DataCollector Hossain Kazi M. Zakir zh603@bath.ac.uk 0000-0002-4178-7271 University of Bath Researcher Calabrese Vincenzo V.Calabrese@bath.ac.uk 0000-0001-5974-9217 University of Bath Researcher Alves Da Silva Marcelo M.Alves.da.Silva@bath.ac.uk 0000-0002-1413-4021 University of Bath Researcher Bryant Saffron S.J.Bryant@bath.ac.uk 0000-0002-7202-3004 University of Bath Researcher Schmitt Julien J.M.F.Schmitt@bath.ac.uk 0000-0002-3452-6655 University of Bath Other Ahn-Jarvis Jennifer H. jennifer.ahn-jarvis@quadram.ac.uk Quadram Institute Other Warren Frederick J. fred.warren@quadram.ac.uk Quadram Institute ProjectMember Khimyak Yaroslav Z. 0000-0003-0424-4128 University of East Anglia Supervisor Scott Janet L J.L.Scott@bath.ac.uk 0000-0001-8021-2860 University of Bath ProjectLeader Edler Karen K.Edler@bath.ac.uk 0000-0001-5822-0127 University of Bath CM0050 GB0020 GE0030 dept_chem Cellulose nanofibrils, starch, rheology, SAXS, salt, pH This dataset contains the raw data used to calculate the rheological properties (such as gel modulus, stiffness, viscosity, etc) of oxidised cellulose nanofibrils (OCNF) and starch gels at various concentrations of NaCl salt and different pH environments. The interactions among the two polysaccharide species also assessed via small-angle X-ray and zeta potential measurements (data included). 2021-03-19 University of Bath public RightsHolder University of Bath Engineering and Physical Sciences Research Council https://doi.org/10.13039/501100000266 EP/N033310/1 New Enzymatically Produced Interpenetrating Starch-Cellulose Gels cent_sus_tech Rheological analysis: A stress-controlled rheometer (Discovery HR-3, TA Instruments, USA) equipped with a sandblasted plate-plate stainless steel geometry (40 mm) was used to perform the rheological tests at 25 °C, as described previously. Gels (approximately 0.7 mL) were placed in between the plates and frequency, amplitude sweeps and flow curves were measured (with a plate-plate gap of 0.5 mm). A thin layer of low viscosity silicone-oil was added to the edge of the geometry to prevent evaporation. Frequency sweeps were conducted, within the linear viscoelastic range, in strain control mode at 0.5% strain with an angular frequency range from 0.1 to 100 rad s-1. Amplitude sweeps were measured at an angular frequency of 1 Hz (6.28 rad s 1) covering the strain ranging from 0.5 to 50%. Finally, flow curves were measured to study the viscosity response of the sample to shearing, with a shear rate ranging from 0.01 to 100 s-1. Surface charge: Dilute suspensions (10 times dilution) of samples, using the appropriate buffer solution (DI water, NaCl or pH adjusted buffer) were used to measure the apparent ζ-potential utilising a Malvern Zeta-sizer Nano ZSP® (Malvern, UK). Samples were placed in the folded capillary electrode cell and were equilibrated at 25 °C for 120 s prior to testing. The data were taken from an average of 5 measurements from 100 scans each. Small-angle X-ray scattering (SAXS) analysis: SAXS measurements were conducted at Diamond Light Source (Didcot, Oxfordshire, UK), on the I22 beamline (using an X-ray wavelength of 1 Å corresponding to an energy of E = 12.4 keV) equipped with a PILATUS P3-2M detector (Silicon hybrid pixel detector, DECTRIS). Samples were loaded in glass capillary tubes (diameter~1.5 mm) and sealed. An empty capillary and the capillary containing DI water were also recorded for solvent subtraction. The probed q-range was 0.005–0.2 Å−1, where q is the scattering vector. SASView software (version 4.1.2) was used to fit the SAXS data using either a rigid and flexible elliptical cylindrical model. 2019-03-01 2020-07-31 en 1 10.15125/BATH-00985 https://doi.org/10.3390/polym13060951 pub