5th PLA World Congress

bioplastics daily news
  • Steel could one day be replaced with specially arranged cellulose fibers.


    When it comes to materials, there is no question as to who wins the strongman competition. Spider silk is known as being the strongest fabric, and steel, ceramics and glass fibers are the best building materials.

    mBut now, researchers are reporting in ACS Nano that specially arranged nano-sized cellulose fibers are the strongest material of them all, in a move that might cause some to re-name Superman the "man of cellulose."

    Although technology has rapidly advanced, researchers are still playing catch-up with nature. Recently, scientists have been trying to mimic the architecture of natural materials on the nanoscale level with the hopes that it would translate to larger-scale strength. For example, a strong, stiff cell wall layer in wood is made up of cellulose nanofibrils (CNFs), and the organization of this material has served as inspiration for the creation of strong, macroscale substances. But poor adhesion and un-aligned components have prevented researchers from realizing this goal. So, Daniel Sӧderberg and colleagues sought to overcome these limitations.

    The team used flow-assisted assembly to organize CNFs into a near-perfect alignment within macroscale fibers. Even the weakest fiber they made with the method was stronger than other CNF fibers previously reported. Most importantly, the macroscale fibers were stronger than metal, alloys and glass fibers. And they are both stronger and eight times stiffer than dragline spider silk, which is the gold standard for lightweight biopolymers, at the same specific strength. The researchers say that the material could be useful in many load-bearing applications, such as light-weight bio-based composites for cars and bikes, as well as high-performance medical implants.

    The authors acknowledge funding from the Knut and Alice Wallenberg Foundation through the Wallenberg Wood Science Center at KTH Royal Institute of Technology.

    Multiscale Control of Nanocellulose Assembly: Transferring Remarkable Nanoscale Fibril Mechanics to Macroscale Fibers
    Nitesh Mittal, Farhan Ansari, Krishne Gowda.V, Christophe Brouzet, Pan Chen, Per Tomas Larsson, Stephan V. Roth, Fredrik Lundell, Lars Wågberg, Nicholas A. Kotov, and L. Daniel Söderberg
    ACS Nano Article ASAP
    DOI: 10.1021/acsnano.8b01084

  • PLA is more than just another plastic

    PLA is more than just another plastic [09-05-18]

    At NPE2018, Natureworks is showcasing a range of application innovations that demonstrate the versatility and performance potential of its Ingeo resin. [more]

  • The largest NPE ever

    The largest NPE ever [08-05-18]

    This week, more than 2,100 exhibiting companies will showcase innovations in plastics in the 111,400 m² of exhibit space on the tradeshow floor. The estimated number of 65,000 visitors includes about 11,000 international attendees from 110 countries. [more]

  • good-natured signs new thermoforming packaging agreement

    good-natured signs new thermoforming packaging agreement [07-05-18]

    Canada-based good natured Products Inc. has signed a 3+ year (40 month) agreement on April 23, 2018 to supply a US industry leader in thermoformed packaging. This agreement covers plant-based packaging solutions for both food and general merchandise markets. [more]

bioplastics MAGAZINE