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Michael A. Brook

Professor, McMaster University
I am Chemistry Professor and researcher at McMaster University. The main focus of our research work is the preparation of silicone-based materials. Silicone polymers are used in many areas of technology, from LED lighting to biomaterials; most people will be familiar with the feel of silicones as sealants in bathtubs or personal care products like cosmetics and antiperspirant sticks. Our research is focussed on improving the process to make silicones or, more interestingly, to make new silicones.

Silicones are normally complex mixtures of materials. More precise materials have much narrower ranges of properties. We are developing highly branched silicones that can be used to moderate the properties of ‘sticky’ silicone adhesives used in wound dressings and sealants for HEPA filters in sensitive healthcare applications.

As part of a focus on Green Chemistry in our research, we are incorporating natural materials in silicone polymers. The presence of the natural materials significantly improves the sustainability of the silicones. A far more interesting result is the new suite of properties that the natural materials convey into the silicones. We have created silicone elastomers based on soybean oil, prepared thermally stable silicone foams using lignin, an ingredient of wood, and most recently created new silicone copolymers by degrading used automobile tires. In the latter case, none of the materials are green, but the process provides a method that closes the loop on tires by allowing the recovery of useful materials from what is otherwise a complex, environmental burden.

A new recycling technique breaks down old tires into reusable materials

Jan 14, 2020 23:27 pm UTC| Insights & Views Technology

Approximately three billion automobile tires were produced worldwide in 2019 alone. Automobile tires are the classic example of a high-volume product derived from non-renewable petroleum resources that is designed for...

Economy

Wall Street Ends Lower as AI Selloff, Iran Tensions Weigh on Tech Stocks

Wall Street closed sharply lower on Friday, ending a two-week winning streak as investors sold technology shares amid a continued pullback in the artificial intelligence (AI) sector and renewed concerns over inflation...

Brent Oil Jumps 16% for Best Week Since April as US-Iran Conflict Fuels Supply Fears

Global oil prices posted their strongest weekly gains in months on Friday as the escalating conflict between the United States and Iran heightened concerns over global crude supply and shipping disruptions through the...

Trump Threatens Higher Canada Tariffs as Wildfire Smoke Sparks U.S. Air Quality Crisis

President Donald Trump has threatened to impose higher tariffs on Canada, blaming the country for worsening air pollution across the United States as smoke from hundreds of active Canadian wildfires spreads south of the...

AI Chip Stocks Face Valuation Pressure as Investors Shift Toward Big Tech and Software

The explosive rally in AI semiconductor stocks is showing signs of cooling as investors question lofty valuations and whether the massive spending on artificial intelligence infrastructure can continue at its current pace....

Malaysia Q2 Economy Grows 5.8%, Beating Forecasts on Strong Tech Exports and Domestic Demand

Malaysias economy expanded by 5.8% year-on-year in the second quarter of 2026, outperforming market expectations and highlighting the countrys resilience despite ongoing geopolitical uncertainties. According to advance...

Politics

Brazil Supreme Court Tightens Jair Bolsonaro House Arrest Ahead of Election

Brazils Supreme Court has imposed stricter restrictions on former President Jair Bolsonaro, suspending all non-essential visits to his residence for 30 days as the country moves closer to its October presidential election....

US Expands Iran Strikes as Strait of Hormuz Shipping Drops, Oil Prices Climb

The United States carried out a seventh straight night of military strikes on Iran, extending operations beyond the countrys southern coast and deeper into its interior, while Tehran launched retaliatory attacks on...

DOJ Subpoenas Major Law Firms in Trump Executive Order Dispute

The U.S. Justice Department has issued subpoenas to 14 major law firms seeking records and sworn testimony related to executive orders signed by President Donald Trump that targeted several prominent legal firms or...

Trump Criticizes ABC, NBC and CNN for Limiting Coverage of Election Speech

President Donald Trump criticized ABC, NBC and CNN after the three major U.S. news organizations declined to air his prime-time address on their main television platforms, intensifying his long-running dispute with the...

Iran Launches Fresh Attacks on U.S. Bases as Strait of Hormuz Tensions Escalate

Iran launched new attacks on U.S. military facilities in the Gulf on Friday after the United States carried out a sixth straight night of strikes on Iranian military targets, deepening a conflict that has unraveled last...

Science

Blue Origin New Glenn Explosion Could Delay Launch Operations Until 2028

Blue Origin is facing a significant setback after a dramatic explosion involving its New Glenn rocket severely damaged a launch pad at Cape Canaveral, Florida. According to NASA Administrator Jared Isaacman, repairs to the...

Blue Origin New Glenn Rocket Explodes During Launch Pad Test, Delaying Space Ambitions

Blue Origin suffered a major setback after its uncrewed New Glenn rocket exploded during a launch pad test in Florida on Thursday, raising new challenges for Jeff Bezos space company as it competes with Elon Musks SpaceX...

SpaceX Delays Starship V3 Launch Ahead of Potential Record IPO

SpaceX on Thursday postponed the highly anticipated launch of its 12th Starship rocket test from Texas after technical issues interrupted the final countdown. The company now plans to attempt the Starship V3 launch again...

Trump Administration Releases New UFO Files and Apollo Mission Records

The U.S. Defense Department has released dozens of previously classified UFO-related files following an order from President Donald Trump, sparking renewed debate over unidentified anomalous phenomena (UAP) and government...

China vs. NASA: The New Moon Race and What's at Stake by 2030

The space race is back and this time, its a direct competition between the United States and China for dominance on the lunar surface. NASAs Artemis II mission recently made history when four astronauts flew farther into...

Technology

DeepSeek Eyes $74 Billion Valuation Ahead of Planned China IPO

Chinese artificial intelligence startup DeepSeek is preparing a new fundraising round that could value the company at approximately 500 billion yuan ($74 billion) as it moves closer to a potential initial public offering...

SpaceX Eyes Pentagon AI Deal as Cloud Pricing Strategy Pressures CoreWeave

SpaceX briefly recovered some of its losses on Friday after a Wall Street Journal report said the aerospace company is negotiating a multi-billion-dollar agreement with the Pentagon to provide artificial intelligence...

Mikron H1 2026 Sales Fall 5.9% as Automation Weakness Weighs on Profit

Swiss automation and machining systems manufacturer Mikron Group AG reported lower first-half 2026 results as weaker demand in its Automation and Machining businesses offset strong growth in its Tool division. Despite the...

KAIST, Stanford Develop Self-Dressing Robot for Cleanrooms and Emergency Gear

Researchers from South Koreas Korea Advanced Institute of Science and Technology (KAIST) and Stanford University have developed an innovative self-dressing robotic technology that allows people to put on clothing without...

SpaceX Aborts Starship Test Flight as Engine Issue Delays Launch

SpaceX (NASDAQ: SPCX) called off the 13th test flight of its Starship rocket just minutes before its scheduled liftoff from its Texas launch site on Thursday after an engine-related issue triggered an automatic abort. CEO...