Essays about: "Polylactic acid PLA"

Showing result 16 - 20 of 23 essays containing the words Polylactic acid PLA.

  1. 16. A comparison between the effects of polylactic acid and polystyrene microplastics on Daphnia magna

    University essay from Stockholms universitet/Institutionen för miljövetenskap och analytisk kemi

    Author : Mikaela Puranen Vasilakis; [2017]
    Keywords : Microplastics; daphnia magna; bioplastics; feeding rate; reproduction; Mikroplast; daphnia magna; bioplast; födoupptag; reproduktion;

    Abstract : The effects of microplastics on zooplankton are an increasing environmental concern. Both primary microplastics that are produced as constituents of cosmetic products, as well as secondary microplastics that are formed by degradation of larger plastic debris, are ubiquitous in aquatic environments. READ MORE

  3. 17. Impact of biobased packaging materials on quality of fully-baked frozen bread

    University essay from Lunds universitet/Förpackningslogistik

    Author : Yoga Putranda; [2017]
    Keywords : biobased packaging material; buns; packaging; polyethylene; quality; Technology and Engineering; Agriculture and Food Sciences;

    Abstract : The performance of five commercial available biobased packaging films for fully-baked frozen bread was studied in comparison to polyethylene (PE) film. The main purpose of this study was to understand how biobased packaging materials affect the quality of fully–baked frozen bread. READ MORE

  4. 18. Development of Kraft Lignin and Coating Technique to Prepare Coated Urea Fertilisers with Increased Nutrient Use Efficiency

    University essay from KTH/Skolan för kemivetenskap (CHE)

    Author : Xueyan Xu; [2017]
    Keywords : fertilizer coating; lignin; modified lignin; polylactide; slow release; ytbeläggning för gödningsmedel; lignin; modifierad lignin; polylaktid; kontrollerad frisättning;

    Abstract : Coating urea to prepare controlled release N-fertilizer has been considered as an effective way to increase its nutrient use efficiency, thus reduce its waste and the consequent harmful environmental impacts. Inorganic sulphur and synthetic polymers have been used in the industry as coating materials together with utilization of various types of expensive coating equipment which commonly requires also complicated technical setup and controls. READ MORE

  5. 19. Mechanical behavior of a bio-based composite : influences of production conditions

    University essay from Linnéuniversitetet/Institutionen för byggteknik (BY)

    Author : Seyed Mazdak Hosseini Moghadam; Mohamed Alshihabi; [2016]
    Keywords : DuraPulp; polylactic acid PLA ; press time; load rate; mechanical properties; E-modulus; maximum strength.;

    Abstract : Some mechanical properties of DuraPulp, a bio-based, bio-degradable composite made from polylactic acid (PLA) and pulp fibers, were determined. Focus was put on the conditions during productions whereby three different press times were studied. Additionally, two different material compositions (PLA to fiber ratios) were used. READ MORE

  6. 20. 3D printing implants for fracture healing studies in rats

    University essay from Lunds universitet/Avdelningen för Biomedicinsk teknik

    Author : Malcolm Horal; [2015]
    Keywords : 3D printing; implants; PHA; PLA; Technology and Engineering;

    Abstract : The purpose of this project was to investigate the possibility to create 3D printed implants intended for bone healing studies in small animals at the Biomechanics group at Lund University. The aim was to use cheaper but stable non metallic implants and find out what printers and materials are suitable and accessible today. READ MORE