Use this URL to cite or link to this record in EThOS:
Title: Investigation of the interaction between superabsorbent polymers and fluids in hygiene applications
Author: Soric, M.
ISNI:       0000 0004 7229 815X
Awarding Body: UCL (University College London)
Current Institution: University College London (University of London)
Date of Award: 2016
Availability of Full Text:
Access from EThOS:
Full text unavailable from EThOS. Restricted access.
Access from Institution:
Incontinence represents a costly health problem that affects a person’s quality of life physically, mentally and socially to a greater degree than diabetes, arthritis and many other chronic conditions. Surgery and medication can help improving the symptoms but deposable pads represent the main reliable management solution. In recent years, the disposable products became thinner and more discreet with the introduction of superabsorbent polymers (SAPs). SAPs are in general made of poly-acrylic acid partially neutralised, lightly cross-linked that can take up to 1000 times their weight in water and up to 100 times in urine and hold it under pressure. In order to design and produce reliable absorbent products, there is a need to understand the basic science behind superabsorbent polymers. The literature in this field is vague but basic physics can be applied from literature on soil science and mineralogy. The aim of this project is to develop relevant methods and reliable research methodology to determine properties of superabsorbent polymers such as swelling kinetics, porosity and permeability which could be at use in future mathematical model that would correlate these properties to the product performance. The work comprised in this report is primarily experimental in nature and involves developing several types of testing methods for simulating the interaction of fluid in a pad. More importantly, research methodologies that would lead to determine the porosity of wet gel beds were produced. This included methods for removing the fluid in-between the polymer particles (interstitial) without removing any fluid from within. The final methodology developed is then presented as a liquid porosimetry-based method that integrates swelling kinetics measurements and allows the calculation of the wet gel bed SAP porosity as a function of time and pressure.
Supervisor: Cottenden, A. Sponsor: Not available
Qualification Name: Thesis (Ph.D.) Qualification Level: Doctoral
EThOS ID:  DOI: Not available