dotlah! dotlah!
  • Cities
  • Technology
  • Business
  • Politics
  • Society
  • Science
  • About
Social Links
  • zedreviews.com
  • citi.io
  • aster.cloud
  • liwaiwai.com
  • guzz.co.uk
  • atinatin.com
0 Likes
0 Followers
0 Subscribers
dotlah!
  • Cities
  • Technology
  • Business
  • Politics
  • Society
  • Science
  • About
  • Technology

The World’s First Aerogels Made From Scrap Rubber Tyres

  • March 19, 2020
Total
0
Shares
0
0
0

A team of NUS researchers has achieved a major technological breakthrough by converting waste rubber tyres into super-light aerogels that have a wide range of applications. This is the first time that aerogels are made from waste rubber tyres. The new rubber aerogels demonstrate remarkable properties — they are extremely light, highly absorbent, very durable, and they are also very efficient at trapping heat and sound.

A team of NUS researchers led by Assoc Prof Duong Hai-Minh (front row, first from left) and Prof Nhan Phan-Thien (front row, centre), developed the world’s first aerogels made from scrap rubber tyres

By upcycling waste rubber into products of a higher commercial value, this new technology promotes a wider use of scrap tyres, and offers an eco-friendly way to recycle used rubber. This novel technology was published in the print version of scientific journal Colloids and Surfaces A: Physicochemical and Engineering Aspects in September 2019, and a patent has been filed.

To boost the research efforts of the team and raise public awareness of recycling, Mapletree Investments, a leading real estate developer with a strong focus on environmental sustainability, has recently made a gift of S$155,000 to NUS.

Scrap tyres — A significant waste problem

Every year, about 1 billion scrap tyres are generated worldwide. Rubber tyres are highly durable and non-biodegradable. Only 40 per cent are recycled into low-value-added products, while 49 per cent are incinerated to generate energy, and at least 11 per cent end up in landfills. Although landfills are commonly practised, landfills sites are running out and there is also a risk of the consequential leachate causing environmental pollution. Furthermore, burning rubber produces toxic substances that pose health and safety concerns.

“Although 40 per cent of waste rubber tyres are recycled, the rate of recycling worldwide remains low because processing used rubber is costly and energy-intensive, coupled with a lack of monetary incentive. Our team has decided to focus on creating rubber aerogels from used rubber tyres because they are a cheap and abundant source of raw materials. By converting waste rubber tyres into high-value aerogels, we could enhance the monetary incentive for recycling rubber and in turn, cut down rubber waste,” explained Associate Professor Duong Hai-Minh, who leads the research team from the Department of Mechanical Engineering at NUS Engineering.

Mr Edmund Cheng, Mapletree Chairman, said, “Mapletree has always placed great emphasis on integrating sustainable designs into our developments. This project which aims to turn rubber waste into aerogel materials via green technology is aligned to our commitment to reduce negative environmental impact. We are excited that part of the support will also fund the refurbished lab facility for applied research and education on the potential of recycling technology. It is our hope that through education, one of our key corporate social responsibility pillars, there will be more awareness on environmental issues.”

Simple, cost-effective and eco-friendly production process 

To create the rubber aerogels, recycled car tyre fibres are first blended into finer fibres. These fine rubber fibres are then soaked in water and very small amount of chemical cross-linkers. Next, the mixture of rubber fibres and eco-friendly solvents is dispersed uniformly using a stirrer for 20 minutes. The uniform suspension gel is then freeze-dried at minus 50 degrees Celsius for up to 12 hours to produce rubber aerogels.

Assoc Prof Duong said, “The fabrication process is simple, cost-effective and eco-friendly. The entire production process takes between 12 to 13 hours to complete and it only cost less than S$10 to produce a sheet of rubber aerogel that is 1 sqm in size and 1cm thick. The process can also be easily scaled up for mass production. This makes rubber aerogels a commercially attractive product.”

Highly versatile rubber aerogels 

The novel rubber aerogels created by the NUS team possess remarkable properties for many applications:

  • Extremely light and stiffer than commercial foam
  • Highly porous: This makes rubber aerogels good absorbents for removal of spilled oil. They are two times more absorbent than conventional absorbents such as the polypropylene mat.
  • Excellent sound absorption: Rubber aerogels are 27 per cent more effective than the commercial foam absorber with the same thickness.
  • Excellent heat insulation: Rubber aerogels have high heat resistance. A piece of rubber aerogel with a thickness of one inch (2.54 cm) has a heat transfer limit that is equivalent to 25 standard glass window panes.
  • Highly durable: Most aerogels are extremely brittle and friable (i.e. they tend to fragment and pulverise), but rubber aerogels can spring back to its original shape after compression. This unique property makes them suitable as insulation material for industrial purposes such as in subsea systems, oil refineries and industrial buildings, and also in homes, refrigerators, as well as personal items such as jackets and shoe insoles.
  • When coated with a chemical called methoxytrimethylsilane, the rubber aerogels become extremely water-repellent and they can be used to prevent moisture from corroding or damaging insulation equipment.

“Potential markets of aerogels are huge. For example, vehicle noise and thermal comfort are vital in vehicle designs — the global automotive heat and sound insulation solution markets are expected to reach US$3.2 billion by 2022. In addition, the global oil spill management market is expected to reach US$182.7 billion by 2025,” added Professor Nhan Phan-Thien, who is a senior member in the research team.

Commercialisation and new applications

Assoc Prof Duong, Prof Nhan and their team are looking forward to realising the positive environmental impact of aerogels by working with Mapletree and industry partners to commercialise and scale up this novel technology. With the generous contribution from Mapletree, the NUS team will be able to conduct further studies to enhance the performance of the rubber aerogels, explore other applications as well as using other types of waste materials to convert into aerogels.

Total
0
Shares
Share
Tweet
Share
Share
Related Topics
  • Aerogels
  • Engineering
  • National University of Singapore
  • NUS
  • Rubber tyres
dotlah.com

Previous Article
  • Lah!

CapitaLand Staff Volunteers To Put In 6,000 Hours Towards Community Distribution Of Free Hand Sanitiser At 16 Malls In Singapore in support of Temasek Foundation’s Stay Prepared initiative

  • March 19, 2020
View Post
Next Article
  • Lah!

LTA Awards Civil Contract To Construct Three Stations For The Jurong Region Line

  • March 19, 2020
View Post
You May Also Like
oracle-ibm
View Post
  • Artificial Intelligence
  • Technology

IBM and Oracle Expand Partnership to Advance Agentic AI and Hybrid Cloud

  • Dean Marc
  • May 6, 2025
View Post
  • Software
  • Technology

Canonical Releases Ubuntu 25.04 Plucky Puffin

  • Dean Marc
  • April 17, 2025
View Post
  • Artificial Intelligence
  • Technology

Tokyo Electron and IBM Renew Collaboration for Advanced Semiconductor Technology

  • Dean Marc
  • April 2, 2025
View Post
  • Artificial Intelligence
  • Technology

IBM contributes key open-source projects to Linux Foundation to advance AI community participation

  • dotlah.com
  • March 22, 2025
View Post
  • Artificial Intelligence
  • Technology

Mitsubishi Motors Canada Launches AI-Powered “Intelligent Companion” to Transform the 2025 Outlander Buying Experience

  • Dean Marc
  • March 10, 2025
View Post
  • Technology

New Meta for Education Offering is Now Generally Available

  • Dean Marc
  • February 26, 2025
View Post
  • Artificial Intelligence
  • Technology

Deep dive into AI with Google Cloud’s global generative AI roadshow

  • dotlah.com
  • February 18, 2025
View Post
  • Artificial Intelligence
  • Technology

How the UK’s plans for AI could derail net zero – the numbers explained

  • dotlah.com
  • February 9, 2025


Trending
  • 1
    • Lah!
    ASEAN To Intensify Efforts In Sustainable Consumption
    • September 14, 2019
  • 2
    • Environment
    • People
    The Importance Of Connecting People With Nature In Times Of Social Isolation
    • April 7, 2020
  • 3
    • Cities
    SKT Secures First Sustainability-Linked Loan From DBS bank
    • June 3, 2021
  • 4
    • Technology
    How Cheap Must Batteries Get For Renewables To Compete With Fossil Fuels?
    • August 28, 2019
  • facemask-5111878_1280 5
    • People
    • World Events
    Experts: A Mask Cuts Your Coronavirus Risk By 65%
    • March 4, 2021
  • 6
    • Lah!
    UOB Raises More Than S$1.65 Million In A Month In Its Latest COVID-19 Relief Effort
    • June 24, 2020
  • 7
    • Cities
    • Lah!
    Grab And McDonald’s Upsize Partnership In Singapore
    • November 23, 2021
  • 8
    • Lah!
    New Seamless Filing Initiative Enables SMEs To Go Digital
    • August 25, 2020
  • 9
    • Lah!
    • Technology
    Report Maps Out How Companies Can Redesign Their Finance Function Amid Digital Transformation
    • August 28, 2020
  • home-valentina-locatelli-P8bsrm8KbM0-unsplash 10
    • Cities
    • Environment
    The Motivation You Need To Build A Sustainable Home
    • April 9, 2022
  • 11
    • Science
    Physicists Design An Experiment To Pin Down The Origin Of The Elements
    • August 30, 2019
  • 12
    • Lah!
    • Science
    • Technology
    Singapore Viewed As A Competitive Global Science And Technology R&D Hub In The Next Decade: SGInnovate Study
    • February 5, 2020
Trending
  • 1
    Trump’s global trade plans are in disarray, after a US court ruling on ‘Liberation Day’ tariffs
    • May 29, 2025
  • 2
    315,000 Singaporeans have used new career and skills planning tool by SkillsFuture Singapore
    • May 23, 2025
  • college-of-cardinals-2025 3
    The Definitive Who’s Who of the 2025 Papal Conclave
    • May 8, 2025
  • conclave-poster-black-smoke 4
    The World Is Revalidating Itself
    • May 7, 2025
  • oracle-ibm 5
    IBM and Oracle Expand Partnership to Advance Agentic AI and Hybrid Cloud
    • May 6, 2025
  • 6
    Conclave: How A New Pope Is Chosen
    • April 25, 2025
  • 7
    Canonical Releases Ubuntu 25.04 Plucky Puffin
    • April 17, 2025
  • 8
    Mathematicians uncover the logic behind how people walk in crowds
    • April 3, 2025
  • 9
    Tokyo Electron and IBM Renew Collaboration for Advanced Semiconductor Technology
    • April 2, 2025
  • 10
    Tariffs, Trump, and Other Things That Start With T – They’re Not The Problem, It’s How We Use Them
    • March 25, 2025
Social Links
dotlah! dotlah!
  • Cities
  • Technology
  • Business
  • Politics
  • Society
  • Science
  • About
Connecting Dots Across Asia's Tech and Urban Landscape

Input your search keywords and press Enter.