Sökning: "chitosan"

Visar resultat 6 - 10 av 76 avhandlingar innehållade ordet chitosan.

1. 6. Strategies to improve the aging, barrier and mechanical properties of chitosan, whey and wheat gluten protein films

   Författare :Idoia Olabarrieta; Mikael Hedenqvist; Jose Maria Lagaron; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Chemistry; biodegradable polymers; chitosan; whey protein; wheat gluten; poly ε-caprolactone ; montmorillonite; food packaging; permeability; mechanical properties; aging; pH; solubility; migration; solution casting.; Kemi; Chemistry; Kemi;

   Sammanfattning : Chitosan, Whey Protein Isolate (WPI) and vital wheat gluten (WG) are three biomaterials that have quite promising properties for packaging purposes. They have good film forming properties and good gas barrier properties in dry conditions. LÄS MER

3. 7. Films and composites based on chitosan, wheat gluten or whey proteins -Their packaging related mechanical and barrier properties

   Författare :Mikael Gällstedt; KTH; []
   Nyckelord :packaging; renewable; oxygen barrier; chitosan; gluten; whey; biopolymer;

   Sammanfattning : .... LÄS MER

4. 8. Round window membrane and delivery of biologically active agents into the cochlea

   Författare :Amanj Saber; Mats Ulfendahl; Lars Lundman; Karolinska Institutet; Karolinska Institutet; Sweden Stockholm Karolinska Institutet Department of Clinical Neoruscience; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Round window membrane; sodium hyaluronate; chitosan; local cochlear drug delivery and gene delivery; Oto-rhino-laryngologi; Oto-Rhino-Laryngology; Biology; Biologi; Round window membrane; sodium hyaluronate; chitosan; local cochlear drug delivery and gene delivery;

   Sammanfattning : Establishing efficient methods for local administration of drugs to the inner ear has great clinical relevance for the management of inner ear disorders. However, the administration route remains a critical issue. LÄS MER

5. 9. Exploring Biopolymer-Clay Nanocomposite Materials by Molecular Modelling

   Författare :Yan Wang; Hans Ågren; Vincenzo Carravetta; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; bio-nanocomposite; interfacial mechanism; binding affinity; dimensional stability; counterions; hydration; stress-strain behavior; xyloglucan; chitosan; chitin; molecular dynamics; montmorillonite.; 生物复合材料，界面机理，分子间亲和力，材料尺寸稳定性，抗衡离子，水合作用，应力应变表现， 木葡聚糖，壳聚糖，甲壳素，分子动力学模拟，蒙脱土; bio-nanokompositer; gränsytor; affinitet; dimensionsstabilitet; jonhydrering; spännings-töjningsbeteende; xyloglukan; kitosan; kitin; molekyldynamisk; montmorillonit.; Kemi; Chemistry; Fiber- och polymervetenskap; Fibre and Polymer Science; Teknisk materialvetenskap; Materials Science and Engineering;

   Sammanfattning : In this thesis, bio-nanocomposites made from two alternative biopolymers and montmorillonite (Mnt) clay have been investigated by molecular modelling. These biopolymers are xyloglucan (XG) and chitosan (CHS), both of which are abundant, renewable, and cost-effective. LÄS MER

7. 10. Superabsorbent Polymers from the Cell Wall of Zygomycetes Fungi

   Författare :Akram Zamani; Högskolan i Borås; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; chitosan; cell wall; chitin; polyphosphates; dilute sulfuric acid; zygomycetes fungi;

   Sammanfattning : The present thesis presents new renewable, antimicrobial and biodegradable superabsorbent polymers (SAPs), produced from the cell wall of zygomycetes fungi. The cell wall was characterized and chitosan, being one of the most important ingredients, was extracted, purified, and converted to SAP for use in disposable personal care products designed for absorption of different body fluids. LÄS MER