Essays about: "biopolymers"

Showing result 21 - 25 of 26 essays containing the word biopolymers.

  1. 21. Thermal Stabilization of Polyhydroxyalkanoates by Washing with Acid

    University essay from Lunds universitet/Centrum för analys och syntes

    Author : Emma Welinder; Johanna Nilsson; [2017]
    Keywords : polymer technology; polymerteknologi; Chemistry; Technology and Engineering;

    Abstract : The main goal of this project was to investigate how the thermal stability of two different types of polyhydroxyalkanoates; poly(3-hydroxybutyrate) and poly(3-hydroxybutyrate-co-4-hydroxybutyrate) were affected when washing them with acid solution. Initially, four different acids were used: citric acid, hydrochloric acid, formic acid and acetic acid. READ MORE

  3. 22. 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

  4. 23. Engineering of central carbon metabolism in recombinant Saccharomyces cerevisiae for improved production of biopolymers

    University essay from Lunds universitet/Teknisk mikrobiologi; Lunds universitet/Bioteknik

    Author : Nina Bjurman; [2016]
    Keywords : waste material; Saccharomyces cerevisiae; biopolymer; genetic manipulation; metabolic engineering; applied microbiology; teknisk mikrobiologi; Biology and Life Sciences;

    Abstract : Bioplastics are a promising alternative for petroleum-based plastics that today is on high demand in our contemporary lifestyles. They are made from biopolymers such as polyhydroxyalkanoates (PHAs). READ MORE

  5. 24. Variation i temperaturrespons (Q10) vid nedbrytning av biopolymerer

    University essay from SLU/Dept. of Forest Ecology and Management

    Author : Anna-Karin Marklund; [2011]
    Keywords : organic matter; biopolymers; decomposition; temperature response; Q 10; microorganisms; physiologic status;

    Abstract : Nedbrytningshastigheten för organiskt material i marken kan komma att förändras vid varmare klimat. I dagsläget råder dock oenighet om hur nedbrytningen av organiskt material kommer att reagera på förändrade temperaturer; forskningsrapporter pekar åt olika håll. READ MORE

  6. 25. Biopolymers as protection during transport of construction materials

    University essay from Högskolan i Borås/Institutionen Ingenjörshögskolan

    Author : Martin Bohlén; Kristina Laurila; [2007]
    Keywords : biopolymers; fungicides; construction materials;

    Abstract : Construction materials are exposed to different conditions along the way from the sawmill, during storage and handling, until the materials are a part of the completed construction. During this time the materials may be exposed to moisture and dirt that can cause an attack by moulds. READ MORE