Monday, 27 May, 2019

Scientists Develop Plastic That Can Be Recycled Repeatedly... But Does it Matter?

Depolymerized Plastics Source Peter Christensen | Brett Evans | Angelique Scheuermann | Kathryn Loeffler Berkeley Lab
Sandra Phillips | 11 May, 2019, 14:42

Further testing showed that these reclaimed monomers are high quality enough that they can be used to produce high quality plastic.

Every day, millions of us drop a plastic bottle or cardboard container into the recycling bin - and we feel we're doing our bit for the environment.

Prior to the discovery, the unpredictability of the properties had made it almost impossible to perform what has been coined "the Holy Grail of recycling", a "circular" material that can be used over and over again for any number of products, including adhesives, phone cases, computer cables and more.

But a new research effort led by scientists at Berkeley Lab could provide a solution in the form of plastics that are designed from the ground up to be fully recyclable. Polymers are composed of shorter strands called monomers.

As it turns out, plastics that should be recycled can't be because of certain chemical qualities that the material has taken on because of additives, reducing the effectiveness of global recycling efforts.

Light yet sturdy, plastic is great - until you no longer need it.

"But we have discovered a new way to assemble plastics that takes recycling into consideration from a molecular perspective", Christensen said. Only less than a third of recyclable plastic is repurposed after the recycling process, and the rest are either disposed of as non-recyclable waste or incinerated.

China deeply regrets U.S. tariff hike, vows countermeasures: Chinese delegation
The statement by USTR Robert Lighthizer said the value of products subject to new round of tariffs is approximately $300 billion. It may take three or four months for Americans to realize they are paying higher prices, but all experts agree it will happen.

Joel Embiid gets flagrant foul for smacking Marc Gasol in face
For contrast, the Raptors ranked seventh in the league this season on uncontested 3-pointers at 41.4 percent, per Second Spectrum. Butler about did it all, and showed in the first half why the free agent will command a max contract in the offseason.

Microsoft Improves File Explorer With Latest Windows 10 Preview Build
Seemingly trying to go under the radar, the popular messaging app updated an old blog post first published back in February 2016. Critics have claimed that the apps available on Windows phones pale in comparison to their iOS and Android counterparts.

All plastics are more or less repeating units - or monomers - of compounds derived from an organic substance like petroleum.

The full findings of the study were published in the journal Nature Chemistry.

Condensing these units into a long string forms a plastic called poly (diketoenamine) - or PDK - and the bonds can be dissolved easily using nothing more than a 12-hour soak in a strong acid bath.

"We're at a critical point where we need to think about the infrastructure needed to modernize recycling facilities for future waste sorting and processing", says Helms.

The researchers want to divert plastics from landfills and the oceans by incentivizing the recovery and reuse of plastics, which could be possible with polymers formed from PDKs.

Plastic manufacturers use different chemicals to boost the properties of the plastics they produced. This means that when it comes time to recycle the plastic, the monomers and the additives are chemically separated using an acidic solution, leaving the monomers free to bond with different additives to make different kinds of plastics.

"Circular plastics and plastics upcycling are grand challenges", said Brett Helms, a staff scientist in Berkeley Lab's Molecular Foundry, in the statement. That includes adhesives, phone cases, watch bands, shoes, computer cables, and hard thermosets that are created by molding hot plastic material. PDK differs from traditional plastics in the way additives bond to it and, unlike plastics that pile up at recycling plants today, the bonds the PDK plastic forms with other chemicals are reversible via an acid bath. "This is an exciting time to start thinking about how to design both materials and recycling facilities to enable circular plastics", said Helms. Right now, the team is working on making the material greener by incorporating plant-based materials.

Recommended

  • IOM: Scores killed as migrant boat sinks off Tunisian coast

    IOM: Scores killed as migrant boat sinks off Tunisian coast

    An IOM official told The Associated Press news agency those on board included Bangladeshi and Moroccan nationals, among others. The vessel sank 40 nautical miles off the coast of Sfax, south of Tunis, the state-run Tunis Afrique Presse agency reported.
    Justin Bieber Teases New Collab With Ed Sheeran

    Justin Bieber Teases New Collab With Ed Sheeran

    If that wasn't proof enough of a collaboration, Bieber also took to Twitter to guide his following there to his Instagram account. Justin Bieber and Ed Sheeran have officially confirmed that they are teaming up again on a new song released this Friday.
    Marmot Meat Infected With Bubonic Plague Made Two New Victims

    Marmot Meat Infected With Bubonic Plague Made Two New Victims

    A couple from Mongolia has died from the bubonic plague after eating raw meat from a large rodent known as the marmot . Officials say marmots are a known carrier of the plague bacteria and are commonly linked to plague cases in Mongolia.
  • North Korea fires unidentified projectile, claims South

    North Korea fires unidentified projectile, claims South

    North Korea conducted two rounds of ballistic missile tests in a week, its first such activity in almost a year and a half. The tests also likely held a message for domestic audiences created to boost support for Kim's government, he said.
    Sterling 'buzzing' for Liverpool after Champions League comeback

    Sterling 'buzzing' for Liverpool after Champions League comeback

    Where to watch Liverpool vs Wolves? "You get millions of messages and nobody speaks about the weekend. The City boss knows his side are one win away from securing the title for a second year on the spin.
    Watch RuPaul Make Anne Hathaway Cry on National Television

    Watch RuPaul Make Anne Hathaway Cry on National Television

    Hathaway, who was raised in Millburn , told Colbert she watches " RuPaul's Drag Race " to put herself in a good mood. In addition to shows like Killing Eve , Hathaway also revealed that she is a RuPaul's Drag Race superfan.
  • Neymar banned for three matches for lashing out at fan

    Neymar banned for three matches for lashing out at fan

    Other PSG players, including Gianluigi Buffon and Marco Verratti, were verbally abused by the same person and ignored him. Meanwhile, sources have told ESPN FC that an appeal against Neymar's three-game Champions League ban is ongoing.
    Sanders, Ocasio-Cortez want to cap credit card interest rates

    Sanders, Ocasio-Cortez want to cap credit card interest rates

    Alexandria Ocasio-Cortez teamed up Thursday to unveil legislation seeking to cap credit card interest rates at 15 percent, calling high rates a "debt trap".
    Avengers: Endgame Made Even More In Its Opening Weekend Than We Thought

    Avengers: Endgame Made Even More In Its Opening Weekend Than We Thought

    The report stated that Robert total fee for Avengers Endgame is even higher than what he got for Infinity War . The success of Avengers: Endgame continues to astound.
  • PH, US, Japan, India navies sail in SCS

    PH, US, Japan, India navies sail in SCS

    Roxas said that during the week-long transit, the ships carried out a series of training exercises and social interactions. China claims most of the mineral-rich South China Sea, including areas that reach the shores of its smaller neighbors.
    Brazilian Grand Prix to move from Sao Paulo to Rio de Janeiro

    Brazilian Grand Prix to move from Sao Paulo to Rio de Janeiro

    Brazil's president says Rio de Janeiro will host the country's Formula One race in 2020, once the city's new autodrome is ready. Brazil is the only South American country to host a grand prix and it has F1's largest single national television audience.
    House Democrat subpoenas IRS, Treasury for Trump's tax returns

    House Democrat subpoenas IRS, Treasury for Trump's tax returns

    Neal rejected those arguments in an April 13 letter, and on May 6, Mnuchin formally rejected the Massachusetts Democrat's request. The House Ways and Means Committee has asked the IRS to provide Trump's personal and business returns for 2013 through 2018.

Nuggets Fall To Damian Lillard And Trail Blazers In Game 6 Nuggets Fall To Damian Lillard And Trail Blazers In Game 6 The victor of Sunday's game will face the victor of the series between the Golden State Warriors and the Houston Rockets. We'll also be recording soon after Game 7, regardless of the outcome, so keep your ears open for that.

James Cameron salutes ‘Avengers: Endgame’ for sinking ‘Titanic’ at box office James Cameron salutes ‘Avengers: Endgame’ for sinking ‘Titanic’ at box office Avatar remains the highest-grossing film of all time with $2.8 billion worldwide, not accounting for inflation. For decades, James Cameron has been the undisputed king of the world at the all-time box office.

Sarri explains why Chelsea deserve to win the Europa League over Arsenal Sarri explains why Chelsea deserve to win the Europa League over Arsenal I love this club and I still have the ambition of a young player. So it is not the best way to prepare the final, I think. I am not anxious about the physical side so much.

Uber Is Going Public & You Can Invest for $45 per Share Uber Is Going Public & You Can Invest for $45 per Share This morning, Uber capped off its extremely exciting week by embarking upon its first day as a publicly traded company. Robert Johnson, professor of finance at Heider College of Business, Creighton University in Omaha, Nebraska said.

Venezuela politician arrested by tow truck Venezuela politician arrested by tow truck The lawmaker commented on events live on Twitter as they unfolded. Edgar Zambrano, left, with Juan Guaidó . Zambrano was arrested Wednesday night.

Trump's lawyer Rudy Giuliani wants Ukraine to investigate Joe Biden's son Trump's lawyer Rudy Giuliani wants Ukraine to investigate Joe Biden's son

European investigation into abuse of power by Apple will start soon European investigation into abuse of power by Apple will start soon Apart from the European Union , Apple is also facing a potential antitrust probe in its home turf. Stock up on App Store and iTunes credits this week and get an extra 10 percent for free .

Fake heiress Anna Sorokin faces sentencing for swindling US banks, hotels Fake heiress Anna Sorokin faces sentencing for swindling US banks, hotels Immigrations and Customs Enforcement said it will seek to deport Sorokin to Germany following her release from state prison. She was denied that loan but persuaded one bank to lend her $100 000 that she failed to repay.

Four hostages rescued by French soldiers in Burkina Faso Four hostages rescued by French soldiers in Burkina Faso Four foreign hostages have been freed by French forces in the West African country of Burkina Faso , the French government says. The identity of the kidnappers is still unknown, and the American and South Korean hostages, who are female, remain unnamed.

Tearful AAP candidate blames Gambhir for circulating derogatory pamphlet on her Tearful AAP candidate blames Gambhir for circulating derogatory pamphlet on her The purported pamphlet has derogatory remarks against Atishi and also about deputy chief minister Manish Sisodia. She is a woman who is determined to change the world.

United States senators say Amazon smart speaker for kids violates privacy law United States  senators say Amazon smart speaker for kids violates privacy law In the letter to the FTC, the senators said Amazon's children privacy disclosure does not say how the device shares information. Amazon's parental consent mechanism does not provide assurance that the person giving consent is the parent of the child.

Federer saves two match points to beat Monfils in Madrid Federer saves two match points to beat Monfils in Madrid The Swiss figure made quite the statement previous year , winning the Australian Open - his 20th major title. In the semi-final on Saturday, Djokovic will face either Roger Federer or 2018 finalist Dominic Thiem.

Reliance Industries' subsidiary acquires iconic British toy retailer Hamleys Reliance Industries' subsidiary acquires iconic British toy retailer Hamleys Reliance Brands' chief executive, Darshan Mehta, said Hamleys had "pioneered the concept of experiential retailing". It is considered one of London's prominent tourist attractions, receiving over 5 million visitors each year.

Madrid Open: Simona Halep beats Viktoria Kuzmova to reach quarter-finals Madrid Open: Simona Halep beats Viktoria Kuzmova to reach quarter-finals Her performance in the Sunshine Doubles was highly disappointing, with losses to Belinda Bencic and Su-Wei Hsieh. I think everything went very well for me today. "It was a good match, even if the first set was fast".

Rafael Nadal back to best against Auger-Aliassime in Madrid opener Rafael Nadal back to best against Auger-Aliassime in Madrid opener Number two seed Petra Kvitova saw off France's Caroline Garcia 6-3, 6-3 and will now face the Netherlands' Kiki Bertens. Fabio Fognini beat John Millman 6-2, 6-2, while Gael Monfils edged Marton Fucsovics 1-6, 6-4, 6-2.