Latest News Archive

Please select Category, Year, and then Month to display items

UFS Department of Chemistry to bring relief to many with invention of reusable sanitary pads

26 April 2023 | Story Leonie Bolleurs | Photo Leonie Bolleurs

A new reusable sanitary pad (RSP) will bring relief to many women during their menstrual cycle.

Dr Marietjie Schutte-Smith, Senior Lecturer in the University of the Free State (UFS) Department of Chemistry, together with Prof Deon Visser, Head of the Department of Chemistry, and Prof Lizette Erasmus, Associate Professor in the same department, are leading a diverse team that decided 18 months ago to do something about the challenge of not having access to conventional sanitary ware and water due to poverty and infrastructure challenges – a challenge many young women in South Africa face every month.

The team included Prof Katinka de Wet, Associate Professor in the Department of Sociology, in this process in an effort to gain a better understanding of the current perceptions, experiences, and preferences of those who will ultimately use these sanitary products.

“We wanted to do research that has a direct and tangible impact on our immediate society,” says Prof Erasmus.

New technology

The research team turned their focus to reusable sanitary pads (RSPs), specifically the invention of a product that can be cleaned without being exposed to direct sunlight.

Dr Schutte-Smith explains that most RSPs must be exposed to direct sunlight to dry and prevent bacterial growth. “Exposing RSPs to sunlight is challenging for users residing in densely populated areas, besides the fact that many people find the public display of sanitary products embarrassing.”

She believes a product that can be washed and left indoors to dry, one that has antibacterial and antimicrobial properties under normal light conditions, and with durable superabsorbent inner layers, could alleviate some of these challenges.

The team then started working on technology including nanoparticles (NPs) that affix to textiles and will kill germs and fungi when exposed to normal light.

Prof Erasmus says, “Attaching NPs to materials is not a new concept, however, the use of nanoparticles that are activated by normal light conditions is new… Also, we have synthesised several absorbent materials using natural fibres and biopolymers as the main constituents. This is an ongoing process to enhance their absorbent properties and durability so that they can be included in our product.”

We wanted to do research that has a direct and tangible impact on our immediate society. – Prof Lizette Erasmus

She adds that when the RSPs are eventually discarded (after four to five years) they will break down in the environment and not contribute further to the plastic waste problem the world is facing. Most disposable sanitary pads (DSPs) are not environmentally friendly and take 500 to 800 years to decompose.

Dr Schutte-Smith goes on to explain that the sanitary ware will be manufactured by sewing different layers together. “The outer lower layer will consist of a hydrophobic (fluid-repellent) layer to prevent leaking, and the inner layer will consist of the synthesised and biodegradable superabsorbent polymer (SAP).”

The product will be mixed into cotton and will be removable (for better cleaning). “It will also contain NPs that use natural indoor light to disinfect. The top layer also contains our nanotechnology and will relay fluids to the absorbent inner layer.”

Social implications

Besides the important work being done by chemists to incorporate technology that will ensure the product makes sense scientifically, it is also important that the experiences, perceptions, and ideas of end users are kept in mind.

Prof De Wet says social scientists were included in the design and development of this product to ensure that the actual needs of the end users are taken into consideration. The idea is to collaborate with school learners and university students to get their feedback on the development and eventual use of these newly developed RSPs.

“The aim, therefore, is to sensitise menstruating individuals as to the possible personal advantages of using reusable sanitary pads, including that it is less expensive in the long run, thus eliminating the problem of access to quality and reliable sanitary ware. There could even be some potential health advantages to using such products, as current disposable products contain phthalates that have been shown to have adverse health effects on individuals,” she states.

Prof De Wet also points out the environmental benefits of using reusable sanitary products, and the importance of sensitising young people to the environmental costs of single-use plastic consumption, of which sanitary ware is a major contributor. “Environmental consciousness is part of the social side of the project, given the pressures globally on the human-induced impact on our planet, and its devastating consequences,” she says. “We want the science (chemistry) to have a real social impact in people’s lives individually, socially, and environmentally.”

Future steps

According to Prof Visser, the team already has a prototype in place, which now needs to be perfected through inputs from end users. They hope to have an industry partner within the next six months that will help to get this product on the market.

The team of chemists worked hard to develop a product that will have the potential to change many lives for the better, allowing young girls and women to thrive in life.

News Archive

Researchers international leaders in satellite tracking in the wildlife environment

2015-05-29

Ground-breaking research has attracted international media attention to Francois Deacon, lecturer and researcher in the Department Animal, Wildlife and Grassland Sciences at the UFS, and Prof Nico Smit, from the same department. They are the first researchers in the world to equip giraffes with GPS collars, and to conduct research on this initiative. Recently, they have been joined by Hennie Butler from the Department of Zoology as well as Free State Nature Conservation to further this research.

“Satellite tracking is proving to be extremely valuable in the wildlife environment. The unit is based on a mobile global two-way communication platform, utilising two-way data satellite communication, complete with GPS systems.

“It allows us to track animals day and night, while we monitor their movements remotely from the computer. These systems make possible the efficient control and monitoring of wildlife in all weather conditions and in near-to-real time. We can even communicate with the animals, calling up their positions or changing the tracking schedules.

“The satellite collar allows us to use the extremely accurate data to conduct research with the best technology available. The volume of data received allows us to publish the data in scientific journals and research-related articles.

“Scientific institutions and the public sector have both shown great interest in satellite tracking, which opens up new ground for scientific research for this university. Data management can be done, using Africa Wildlife Tracking (AWT) equipment where we can access our data personally, store it, and make visual presentations. The AWT system and software architecture provide the researcher with asset tracking, GPS location reports, geo-fencing, highly-detailed custom mapping, history reports and playback, polling on demand, history plotting on maps, and a range of reporting types and functions,” Francois said.

Data can be analysed to determine home range, dispersal, or habitat preference for any specific species.

Francois has been involved in multiple research projects over the last 12 years on wildlife species and domesticated animals, including the collaring of species such as Black-backed Jackal, Caracal, African Wild Dog, Hyena, Lion, Cheetah, Cattle, Kudu, Giraffe, and Black Rhino: “Giraffe definitely being the most challenging of all,” he said.

In 2010, he started working on his PhD, entitled The spatial ecology, habitat preferences and diet selection of giraffe (Giraffa camelopardalis giraffa) in the Kalahari region of South Africa.

Since then, his work has resulted not only in more research work (supervising four Masters students) but also in a number of national and international projects. These include work in the:

Kalahari region (e.g. Khamab Nature Reserve and Kgalagadi Transfrontier Park)
Kuruman region (Collared 18 cattle to identify spatial patterns in relation to the qualities of vegetation and soil-types available. This project took place in collaboration with Born University in Germany)
Woodland Hills Wildlife Estate and Kolomella Iron Ore – ecological monitoring
A number of Free State nature reserves (e.g. Distribution of herbivores (kudu and giraffe) and predators (camera traps)

Francois is also involved with species breeding programmes and management (giraffe, buffalo, sable, roan, and rhino) in Korrannaberg, Rustenburg, Hertzogville, Douglas, and Bethlehem as well as animal and ecological monitoring in Kolomella and Beesthoek iron ore.

Besides the collaring of giraffes, Francois and his colleagues are involved in national projects, where they collect milk from lactating giraffes and DNA material, blood samples, and ecto/endo parasites from giraffes in Southern Africa.

With international projects, Francois is working to collect DNA material for the classification of the nine sub-species of giraffe in Africa. He is also involved in projects focusing on the spatial ecology and adaptation of giraffe in Uganda (Murchison Falls), and to save the last 30 giraffe in the DRC- Garamba National Park.

This project has attracted a good deal of international interest. In June 2014, a US film crew (freelancing for Discovery Channel) filmed a documentary on Francois’ research (trailer of documentary). Early in 2015, a second crew, filming for National Geographic, also visited Francois to document his work.

More information about Francois’ work is available at the GCF website.

Read Francois Deacon's PhD abstract

Direct enquiries to news@ufs.ac.za.

Back

Economic and Management Sciences

Education

Health Sciences

The Humanities

Law

Natural and Agricultural Sciences

Theology and Religion

Open Distance Learning

Business School

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept