A peptide sensor to detect water-soluble polymers in wastewater, a major contributor to pollution on par with microplastics, has been developed by scientists from Tokyo Institute of Technology. The new technique takes advantage of the bonding that occurs between peptides and different polymers to train a machine learning algorithm that can identify a large number of pollutants in a single solution.

 

From dying coral reefs to diminishing fish populations, marine pollution due to plastics is a growing global concern. Much of the recent conversation on plastic pollution has revolved around microplastics, tiny bits of plastic that are extremely difficult to remove from water. But there is increasing interest in water-soluble synthetic polymers as a source of marine pollution, especially with regard to the risks they pose to soil and water environments. Being water-soluble, they cannot be recovered using normal filtration techniques. Developing alternative approaches to remove these pollutants is key. Thus, understanding the exact nature of the water-soluble polymer pollutant, as well as quantifying its amount in wastewater has become a focal point for researchers.

Polymers are long chains of chemicals made up of much smaller, repeating units. Although they are rarely associated with the term, proteins too can be thought of as polymers because they are made up of thousands of subunits called ‘amino acids.’ Short chains of these amino acids are called peptides. Peptides can undergo specific and non-specific interactions with molecules, such as polymers, in different ways with different levels of affinity. In a new study published in ACS Applied Materials & Interfaces, researchers from Tokyo Institute of Technology (Tokyo Tech), have exploited these interactions to develop a new peptide sensor for the identification of water-soluble polymers in mixed solutions. “Our technique depends on a machine learning pattern analysis that mimics mammalian odor and taste discrimination. Just like how our noses and tongues can distinguish between myriad odors and tastes using a limited number of receptor proteins, so too can our single peptide senor be used to detect multiple polymers and other molecules,” says Professor Takeshi Serizawa, who led the study.

The research team based the technique around a peptide that binds to a synthetic polymer called poly(N-isopropylacrylamide) (PNIPAM). They then introduced a fluorescent ‘tag’ called N-(1-anilinonaphthyl-4)maleimide (ANM) into the peptide to help obtain signals for its different interactions. The fluorescence of ANM varied based on the interaction of the peptide, thereby giving off a detectable signal. The researchers measured the signals from ANM in known solution concentrations of different polymers and used it to train a ‘linear discriminant analysis’ algorithm, which is one of supervised machine learning (see Figure 1). They then validated their technique with unknown samples and found that the sensor and algorithm could identify polymers in mixed solutions. Moreover, after adding small amounts of ethanol or sodium chloride to the solutions to slightly modify the chemical interactions, the machine learning algorithm could discriminate against polymers with similar properties. Finally, they tested the new peptide sensor and algorithm on actual wastewater and confirmed its ability to detect different water-soluble polymers.

“Our technique can be used to not only detect dissolved macromolecular pollutants like polymer in water, but also will be used to analyze how they enter into the environment,” says Dr. Serizawa. The research team further plans to extend the method to other peptides and polymers.

With such potent research to help guide the way, remediating and protecting our marine environments could soon become a reality!

https://www.titech.ac.jp/

Polyplastics Group has announced the introduction of two new RENATUS® PET (polyethylene terephthalate) grades which deliver superior mechanical properties, appearance, and weather resistance for automotive exterior components. The launch reaffirms the company’s strong commitment to PET as a key pillar of its extensive resin business portfolio.

 

The two new glass-reinforced grades, RH030 (30% glass filled) and RH045 (45% glass filled), maintain their jet blackness and reduce whitening on the surface of molded articles in outdoor environments, making them ideally suited for applications such as automotive side mirrors and rear wiper arms/blades. Since PET parts are not painted, weathering degradation can occur over time. The glass filler can start to float and the jet blackness can decrease. Accelerated weather resistance testing demonstrates that Polyplastics’ new PET materials maintain lower index values than the competition, thus indicating that whitening is being reduced.

 

Plastic resins that are reinforced with glass fiber are typically made stronger but glass filler can also have a negative effect on the surface appearance of molded articles. RENATUS® RH030 and RH045 PET are glass fiber reinforced grades, but they can still produce molded articles with good surface appearance because of their superior mold transferability during molding. Recent company testing shows that when compared to standard grade PBT-GF30, RH045 (PET-GF45) exhibits higher surface gloss even though it has a large amount of glass fiber added to the formulation.

 

In terms of mechanical performance, PET typically has superior properties compared to PBT. At similar glass loadings, RH030 and RH045 PET grades have higher mechanical properties including greater tensile strength, flexural modulus, and deflection temperature under load compared to PBT grades.

https://www.polyplastics-global.com/

 Digimarc Corporation, creator of Digimarc watermarks that are driving the next generation of digital identification and detection-based solutions, announced today it entered into a definitive agreement to acquire the Product Cloud company EVRYTHNG Limited in a stock transaction.

“This acquisition allows us to provide a complete solution set to our customers,” explains Digimarc CEO Riley McCormack. “The best determinant of a technology product’s value is how much of the customer’s problem it can solve. By combining Digimarc’s unique and advanced means of identification with the pioneer and most advanced supplier of product item business intelligence using any means of identification, we are now uniquely positioned to unlock additional solutions for our customers and enhance their Digimarc journey.”

EVRYTHNG is the market leader and pioneered the Product Cloud category, linking every product item to its Active Digital Identity™ on the web and joining-up product data across the value chain for visibility, validation, real time intelligence, and connection with people.

From enabling more sustainable, more transparent, and more secure supply chains to empowering consumers to verify the authenticity of products and recyclability of their packaging, combining Digimarc’s unique means of identification with the EVRYTHNG Product Cloud® makes it possible to gather and apply traceability data from across the product lifecycle, unlocking end-to-end visibility and authenticity through item-level, real-time intelligence and analytics.

“Not only are our product solutions and technology competencies directly complementary and naturally connected,” explains EVRYTHNG CEO & Co-founder Niall Murphy, “but our company values and cultures are deeply aligned, with a focus on executing as a team, committing to audacious goals, and genuine innovation with exceptional talent. We’re excited to join the Digimarc team to meet important customer needs with product data driven solutions.”

The acquisition expands the geographic footprint for both companies. EVRYTHNG, based in London with offices in New York, Beijing, Minsk, and Lausanne is finding much success in North America. Conversely, Digimarc, based in the Portland, Oregon area, has a growing customer base across Europe.

https://www.digimarc.com/

Three industry leaders in sustainable solutions for the glass industry are coming together to collaborate on innovative technology to increase the strength and thereby significantly reduce the weight of glass bottles. Dassault Systèmes (Euronext Paris: FR0014003TT8, DSY.PA), Ardagh Group and EXXERGY will begin ‘virtual twin’ trials on Diageo’s iconic Johnnie Walker bottle in January 2022 to research and develop a coating that will enable the glass bottle to be lightweighted without compromising its strength and shape – an industry first. 

The virtual trial will pioneer science-based sustainable innovations to reduce the time and cost needed to test glass products, whilst also reducing the raw materials and energy used in the process. A virtual twin is a real-time digital representation of a product or process that is used to model, visualize and predict new innovations before any physical trials take place. The trial will research and develop a new external coating for the glass bottle to reduce the micro-cracks in the glass surface, which will allow the glass to be much lighter whilst maintaining its strength. The lightweight glass bottle will maintain its 100% recyclability and if successful in the virtual trial, will undergo glass bottle testing from summer 2022. 

Ardagh Group, a leading global supplier in sustainable packaging solutions, will work with EXXERGY, an international consulting firm active in the renewable and glass sectors, to research and develop the coatings for global beverage leader Diageo, makers of Johnnie Walker, Smirnoff and Gordon’s gin. Dassault Systèmes will provide contract research services using its BIOVIA applications to create a nanoscale virtual twin of the coatings, simulate their interaction with the surface of the glass, and test their efficacy.

John Sadlier, Chief Sustainability Officer at Ardagh Group, commented on the upcoming product development: “Ardagh Group has pioneered the lightweighting of glass and as a leading global supplier of infinitely recyclable, sustainable metal and glass packaging, we have a responsibility to respond to the sustainability challenges we all face. Together with our customers and supply chain partners, we are eager to explore the potential of digitalisation to drive new and innovative lightweighting solutions.”

Glass lightweighting is one of the solutions for reducing the glass sector’s CO₂ impact and carbon emissions will be reduced in both the manufacturing of the bottle and transportation of the finished goods. Should this collaboration project be successful, it will be a major breakthrough for virtual twin technology in supporting the sustainability ambitions of the glass industry and enabling the decarbonisation of the sector as a whole. 

“There is a growing urgency to change our ways of production and consumption. We need to rethink everything, and dare to imagine the boldest sustainability initiatives,” said Florence Verzelen, Executive Vice President, Industry, Marketing & Sustainability, Dassault Systèmes. “Using Dassault Systèmes’ virtual twin technology, companies can design and simulate radically different new sustainable materials, products and processes in record time. They can be right, but also sustainable the first time.”

“At Diageo, sustainability and particularly sustainable packaging is a key priority. We’re excited to be part of this pioneering trial that embraces the principles of our Diageo Sustainable Solutions platform which encourages innovation and collaboration in developing scientific solutions to the impact of climate change. We’ve made a commitment in our Society 2030 strategy to have net zero carbon emissions across all operations by 2050 or earlier and should this trial be successful, it’s a great step towards us achieving that,” said Lucy Fishwick, Head of Procurement – Grain to Glass Sustainability, Diageo.

https://www.3ds.com/

 

 

ASTM International’s plastic piping systems committee (F17) has approved a standard that will aid in the design of a new fabricated pipe fittings made from crosslinked polyethylene (CX-PE). The new standard will soon be published as F3525.

ASTM International member Robert Samplonius says that F3525 is part of a movement to develop several standards applicable to the specification and construction of CX-PE piping systems.

“The new standard is intended for manufacturers of fittings, which will be used for large scale utility, commercial and industrial projects,” says Samplonius, laboratory manager, Kafrit NA Ltd.

“This standard will support the innovated development of improved infrastructure, says Samplonius. “CX-PE piping has clear advantages when used to transfer hot water, which could help make utility projects more economical and energy efficient.”

This effort directly relates to the United Nations Sustainable Development Goal #9 on industry, innovation, and infrastructure, among others.

The subcommittee that developed the standard is working on other proposed CX-PE standards, such as a practice for commissioning constructed CX-PE piping systems. All interested parties are invited to join in the developing of these proposed standards. 


https://www.astm.org/

 

Global standards organization ASTM International has acquired Wohlers Associates, a global intelligence leader in the additive manufacturing (AM) and 3D printing industry. The announcement coincided with the Standards Forum at Formnext 2021, which serves as the leading trade show for AM and next-generation intelligent manufacturing solutions. As part of the acquisition, ASTM acquires the Wohlers Report, the premier publication for the AM industry, along with intelligence briefs, specialized reports, training in design for AM, and consulting services. 

 

“We are thrilled to welcome Wohlers Associates to the ASTM family,” notes Katharine Morgan, ASTM International president. “Wohlers has been a trusted source of intelligence and analysis for the AM community for more than 30 years and I am excited to see what our two trusted and credible brands can accomplish together for this industry.”

Morgan looks forward to combining the Wohlers Report, and the full portfolio of products and services from Wohlers Associates, with the work of ASTM’s members and the AM Center of Excellence (CoE). This alignment will result in new possibilities for business intelligence, advice, and resources in the global AM community. 

Moving forward, the Fort Collins, Colorado company will do business as Wohlers Associates, powered by ASTM International. Terry Wohlers, the organization’s principal consultant and president, will join ASTM International and serve as head of additive manufacturing market intelligence. Also, Noah Mostow of Wohlers Associates will become ASTM’s new manager of AM market intelligence and analytics. Both will serve under ASTM’s AM CoE. 

“I could not be more excited about joining the world-class team at ASTM International,” Wohlers said. “Through ASTM, we can now accept more projects than in the past and our advisory services team is now larger than ever. We are glad ASTM has made a commitment to publishing the report for years to come.”

Wohlers adds that he is confident ASTM International will maintain the quality, neutrality, and value customers have come to expect from the Wohlers Report, which has been the undisputed, industry-leading publication on AM for 26 years.

The acquisition supports ASTM’s growth vision and investment to expand its footprint in the AM industry with robust AM programs, services, and product offerings. These offerings now include market intelligence and technical and strategic advisory services on the latest developments and trends in AM. They complement existing ASTM programs and services to support the industrialization of AM technologies. Future editions of the Wohlers Report are expected to be integrated into ASTM’s flagship product Compass, an online subscription platform. 

ASTM will leverage the existing Wohlers brand and build on its market influence and access to top AM industry decision-makers worldwide. The acquisition is expected to bring new value to many industries, thus enabling wider adoption of AM products and services.

https://www.astm.org/