![](https://news.europawire.eu/wp-content/uploads/2018/01/Fraunhofer-researchers-develop-cost-effective-coating-based-on-renewable-raw-materials-1.jpg)
© Photo Fraunhofer IAP
In future, indoor aluminum surfaces should also be cost-effectively coated with paints based on potato starch.
MUNICH, 04-Jan-2018 — /EuropaWire/ — If a surface has to be protected against corrosion, in 80 percent of all cases this takes place through coating it with paints or varnishes. When doing so, the proportion of bio-based, environmentally-friendly solutions is extremely small. Researchers at the Fraunhofer Institute for Applied Polymer Research IAP, in cooperation with the Fraunhofer Institute for Manufacturing Engineering and Automation IPA, are looking to close this gap and are developing a cost-effecti-ve coating based on renewable raw materials. The focus of the research is on potato starch.
Climate change, finite resources, increasing burdens on the environment mean that more and more industries are focusing on sustainable production. And this is also the case in the production of coatings such as paints and varnishes. In Germany alone, 100,000 tonnes of coating materials for protection against corrosion are produced every year. However, in the past, paints and varnishes with bio-based binders or film formers have usually been too expensive or could not meet the requirements. But through the use of modified starch, scientists at the Fraunhofer IAP have found a way which even in this field makes sustainable and cost-effective solutions possible. “Until now, traditional industrial fields of application of starch have been the paper/corrugated cardboard and adhesives industries,” says Christina Gabriel, a scientist at the Fraunhofer IAP in Potsdam-Golm. “In the field of paints and varnishes on the other hand, starch was usually only used as a additive. With starch as the main component of a water-based dispersion, we now have very promising adhesion results.” At the center of the research is the coating of metals for indoor use, for example aluminum, which can be used, e.g. for fire doors, computer housings or window frames.
From potato starch to film former
The use of starch as the main component of paints and varnishes posed various challenges to the Fraunhofer experts. “Film formers must fulfill several tasks. They must form a continuous film, which adheres well to the substrate material, is compatible with additional layers and additives and can embed pigments and fillers as well,” explains Christina Gabriel. “In its natural form, however, starch exhibits several properties, which stand in the way of its use as a film former. For example, it is not soluble in cold water and neither does it form continuous, non-brittle films. We therefore had to modify the starch to adapt it to the requirements, as in spite of all the challenges, as a renewable and cost-effective raw material, starch is of great interest for many sectors.”
The solution by the Potsdam scientists involves an initial degradation step of the starch in order to improve its solubility in water and the subsequently associated solids content of the starch in water, as well as its film forming ability. However, in order to produce a starch-based coating material, which is comparable with a conventional coating, this is not yet sufficient, as although the film former should initially be soluble or dispersible in water, the coating must subsequently no longer dissolve in water.
The starch must therefore be modified further. This takes place by way of a chemical process known as esterification. The resulting starch esters are dispersible in water, form continuous films and have very good adhesive properties on glass and aluminum surfaces. In cooperation with the Fraunhofer IPA, the esterified starch is then “crosslinked” through which the sensitivity of the coating to water is reduced further.
The stability tests to check the long-term stability are then also carried out at the Fraunhofer IPA. In the tests, the coated materials are exposed to rapidly changing temperature cycles in a time-compressed form to simulate the change from day to night and the course of the seasons. In addition, the test objects are exposed to electrolyte-enriched water in order to see how the coating reacts to water and how resistant it is under extreme conditions.
Alternative to petroleum-based film formers
In the next step, the resistance to corrosion and adhesion of the modified starch on different metal substrates is examined. New “recipes” are also being tested, which are intended to optimize the properties of the coating even further. “Apart from the already tested aluminum, two other important metals, steel and galvanized steel, are to be tested” states Gabriel. “Our investigations show that with its good film forming and very good adhesion properties on various substrates, starch esters have the potential to be future alternatives to petroleum-based film formers in the coatings industry.”
Contact:
Joerg-Dieter Walz
Fraunhofer Institute for Manufacturing Engineering and Automation IPA
Nobelstr. 12
70569 Stuttgart, Germany
Phone +49 711 970-1667
Source: Fraunhofer
- Digi Communications N.V. announced that its Spanish subsidiary, Digi Spain Telecom S.L.U., has completed the first stage of selling a Fibre-to-the-Home (FTTH) network in 12 Spanish provinces
- Natural Cotton Color lancia la collezione "Calunga" a Milano
- Astor Asset Management 3 Ltd: Salinas Pliego Incumple Préstamo de $110 Millones USD y Viola Regulaciones Mexicanas
- Astor Asset Management 3 Ltd: Salinas Pliego Verstößt gegen Darlehensvertrag über 110 Mio. USD und Mexikanische Wertpapiergesetze
- ChargeEuropa zamyka rundę finansowania, której przewodził fundusz Shift4Good tym samym dokonując historycznej francuskiej inwestycji w polski sektor elektromobilności
- Strengthening EU Protections: Robert Szustkowski calls for safeguarding EU citizens’ rights to dignity
- Digi Communications NV announces the release of H1 2024 Financial Results
- Digi Communications N.V. announces that conditional stock options were granted to a director of the Company’s Romanian Subsidiary
- Digi Communications N.V. announces Investors Call for the presentation of the H1 2024 Financial Results
- Digi Communications N.V. announces the conclusion of a share purchase agreement by its subsidiary in Portugal
- Digi Communications N.V. Announces Rating Assigned by Fitch Ratings to Digi Communications N.V.
- Digi Communications N.V. announces significant agreements concluded by the Company’s subsidiaries in Spain
- SGW Global Appoints Telcomdis as the Official European Distributor for Motorola Nursery and Motorola Sound Products
- Digi Communications N.V. announces the availability of the instruction regarding the payment of share dividend for the 2023 financial year
- Digi Communications N.V. announces the exercise of conditional share options by the executive directors of the Company, for the year 2023, as approved by the Company’s Ordinary General Shareholders’ Meetings from 18th May 2021 and 28th December 2022
- Digi Communications N.V. announces the granting of conditional stock options to Executive Directors of the Company based on the general shareholders’ meeting approval from 25 June 2024
- Digi Communications N.V. announces the OGMS resolutions and the availability of the approved 2023 Annual Report
- Czech Composer Tatiana Mikova Presents Her String Quartet ‘In Modo Lidico’ at Carnegie Hall
- SWIFTT: A Copernicus-based forest management tool to map, mitigate, and prevent the main threats to EU forests
- WickedBet Unveils Exciting Euro 2024 Promotion with Boosted Odds
- Museum of Unrest: a new space for activism, art and design
- Digi Communications N.V. announces the conclusion of a Senior Facility Agreement by companies within Digi Group
- Digi Communications N.V. announces the agreements concluded by Digi Romania (formerly named RCS & RDS S.A.), the Romanian subsidiary of the Company
- Green Light for Henri Hotel, Restaurants and Shops in the “Alter Fischereihafen” (Old Fishing Port) in Cuxhaven, opening Summer 2026
- Digi Communications N.V. reports consolidated revenues and other income of EUR 447 million, adjusted EBITDA (excluding IFRS 16) of EUR 140 million for Q1 2024
- Digi Communications announces the conclusion of Facilities Agreements by companies from Digi Group
- Digi Communications N.V. Announces the convocation of the Company’s general shareholders meeting for 25 June 2024 for the approval of, among others, the 2023 Annual Report
- Digi Communications NV announces Investors Call for the presentation of the Q1 2024 Financial Results
- Digi Communications intends to propose to shareholders the distribution of dividends for the fiscal year 2023 at the upcoming General Meeting of Shareholders, which shall take place in June 2024
- Digi Communications N.V. announces the availability of the Romanian version of the 2023 Annual Report
- Digi Communications N.V. announces the availability of the 2023 Annual Report
- International Airlines Group adopts Airline Economics by Skailark ↗️
- BevZero Spain Enhances Sustainability Efforts with Installation of Solar Panels at Production Facility
- Digi Communications N.V. announces share transaction made by an Executive Director of the Company with class B shares
- BevZero South Africa Achieves FSSC 22000 Food Safety Certification
- Digi Communications N.V.: Digi Spain Enters Agreement to Sell FTTH Network to International Investors for Up to EUR 750 Million
- Patients as Partners® Europe Announces the Launch of 8th Annual Meeting with 2024 Keynotes and Topics
- driveMybox continues its international expansion: Hungary as a new strategic location
- Monesave introduces Socialised budgeting: Meet the app quietly revolutionising how users budget
- Digi Communications NV announces the release of the 2023 Preliminary Financial Results
- Digi Communications NV announces Investors Call for the presentation of the 2023 Preliminary Financial Results
- Lensa, един от най-ценените търговци на оптика в Румъния, пристига в България. Първият шоурум е открит в София
- Criando o futuro: desenvolvimento da AENO no mercado de consumo em Portugal
- Digi Communications N.V. Announces the release of the Financial Calendar for 2024
- Customer Data Platform Industry Attracts New Participants: CDP Institute Report
- eCarsTrade annonce Dirk Van Roost au poste de Directeur Administratif et Financier: une décision stratégique pour la croissance à venir
- BevZero Announces Strategic Partnership with TOMSA Desil to Distribute equipment for sustainability in the wine industry, as well as the development of Next-Gen Dealcoholization technology
- Digi Communications N.V. announces share transaction made by a Non-Executive Director of the Company with class B shares
- Digi Spain Telecom, the subsidiary of Digi Communications NV in Spain, has concluded a spectrum transfer agreement for the purchase of spectrum licenses
- Эксперт по торговле акциями Сергей Левин запускает онлайн-мастер-класс по торговле сырьевыми товарами и хеджированию
- Digi Communications N.V. announces the conclusion by Company’s Portuguese subsidiary of a framework agreement for spectrum usage rights
- North Texas Couple Completes Dream Purchase of Ouray’s Iconic Beaumont Hotel
- Предприниматель и филантроп Михаил Пелег подчеркнул важность саммита ООН по Целям устойчивого развития 2023 года в Нью-Йорке
- Digi Communications NV announces the release of the Q3 2023 Financial Results
- IQ Biozoom Innovates Non-Invasive Self-Testing, Empowering People to Self-Monitor with Laboratory Precision at Home
- BevZero Introduces Energy Saving Tank Insulation System to Europe under name “BevClad”
- Motorvision Group reduces localization costs using AI dubbing thanks to partnering with Dubformer
- Digi Communications NV Announces Investors Call for the Q3 2023 Financial Results
- Jifiti Granted Electronic Money Institution (EMI) License in Europe
- Предприниматель Михаил Пелег выступил в защиту образования и грамотности на мероприятии ЮНЕСКО, посвящённом Международному дню грамотности
- VRG Components Welcomes New Austrian Independent Agent
- Digi Communications N.V. announces that Digi Spain Telecom S.L.U., its subsidiary in Spain, and abrdn plc have completed the first investment within the transaction having as subject matter the financing of the roll out of a Fibre-to-the-Home (“FTTH”) network in Andalusia, Spain
- Продюсер Михаил Пелег, как сообщается, работает над новым сериалом с участием крупной голливудской актрисы
- Double digit growth in global hospitality industry for Q4 2023
- ITC Deploys Traffic Management Solution in Peachtree Corners, Launches into United States Market
- Cyviz onthult nieuwe TEMPEST dynamische controlekamer in Benelux, Nederland
- EU-Funded CommuniCity Launches its Second Open Call
- Astrologia pode dar pistas sobre a separação de Sophie Turner e Joe Jonas
- La astrología puede señalar las razones de la separación de Sophie Turner y Joe Jonas
- Empowering Europe against infectious diseases: innovative framework to tackle climate-driven health risks
- Montachem International Enters Compostable Materials Market with Seaweed Resins Company Loliware
- Digi Communications N.V. announces that its Belgian affiliated companies are moving ahead with their operations
- Digi Communications N.V. announces the exercise of conditional share options by an executive director of the Company, for the year 2022, as approved by the Company’s Ordinary General Shareholders’ Meeting from 18 May 2021
- Digi Communications N.V. announces the availability of the instruction regarding the payment of share dividend for the 2022 financial year
- Digi Communications N.V. announces the availability of the 2022 Annual Report
- Digi Communications N.V. announces the general shareholders’ meeting resolutions from 18 August 2023 approving amongst others, the 2022 Annual Accounts
- Русские эмигранты усиливают призывы «Я хочу, чтобы вы жили» через искусство
- BevZero Introduces State-of-the-Art Mobile Flash Pasteurization Unit to Enhance Non-Alcoholic Beverage Stability at South Africa Facility
- Russian Emigrés Amplify Pleas of “I Want You to Live” through Art
- Digi Communications NV announces the release of H1 2023 Financial Results
- Digi Communications NV Announces Investors Call for the H1 2023 Financial Results
- Digi Communications N.V. announces the convocation of the Company’s general shareholders meeting for 18 August 2023 for the approval of, among others, the 2022 Annual Report
- “Art Is Our Weapon”: Artists in Exile Deploy Their Talents in Support of Peace, Justice for Ukraine
- Digi Communications N.V. announces the availability of the 2022 Annual Financial Report
- “AmsEindShuttle” nuevo servicio de transporte que conecta el aeropuerto de Eindhoven y Ámsterdam
- Un nuovo servizio navetta “AmsEindShuttle” collega l’aeroporto di Eindhoven ad Amsterdam
- Digi Communications N.V. announces the conclusion of an amendment agreement to the Facility Agreement dated 26 July 2021, by the Company’s Spanish subsidiary
- Digi Communications N.V. announces an amendment of the Company’s 2023 financial calendar
- iGulu F1: Brewing Evolution Unleashed
- Почему интерактивная «Карта мира» собрала ключевые антивоенные сообщества россиян по всему миру и становится для них важнейшим инструментом
- Hajj Minister meets EU ambassadors to Saudi Arabia
- Online Organizing Platform “Map of Peace” Emerges as Key Tool for Diaspora Activists
- Digi Communications N.V. announces that conditional stock options were granted to executive directors of the Company based on the general shareholders’ meeting approval from 18 May 2021
- Digi Communications N.V. announces the release of the Q1 2023 financial results
- AMBROSIA – A MULTIPLEXED PLASMO-PHOTONIC BIOSENSING PLATFORM FOR RAPID AND INTELLIGENT SEPSIS DIAGNOSIS AT THE POINT-OF-CARE
- Digi Communications NV announces Investors Call for the Q1 2023 Financial Results presentation
- Digi Communications N.V. announces the amendment of the Company’s 2023 financial calendar
- Digi Communications N.V. announces the conclusion of two Facilities Agreements by the Company’s Romanian subsidiary
- Digi Communications N.V. announces the conclusion of a Senior Facility Agreement by the Company’s Romanian subsidiary
- Patients as Partners Europe Returns to London and Announces Agenda Highlights
- GRETE PROJECT RESULTS PRESENTED TO TEXTILE INDUSTRY STAKEHOLDERS AT INTERNATIONAL CELLULOSE FIBRES CONFERENCE
- Digi Communications N.V. announces Digi Spain Telecom S.L.U., its subsidiary in Spain, entered into an investment agreement with abrdn to finance the roll out of a Fibre-to-the-Home (FTTH) network in Andalusia, Spain
- XSpline SPA / University of Linz (Austria): the first patient has been enrolled in the international multicenter clinical study for the Cardiac Resynchronization Therapy DeliveRy guided by non-Invasive electrical and VEnous anatomy assessment (CRT-DRIVE)
- Franklin Junction Expands Host Kitchen® Network To Europe with Digital Food Hall Pioneer Casper
- Unihertz a dévoilé un nouveau smartphone distinctif, Luna, au MWC 2023 de Barcelone
- Unihertz Brachte ein Neues, Markantes Smartphone, Luna, auf dem MWC 2023 in Barcelona
- Editor's pick archive....