Search for dissertations about: "ring-opening polymerization"

Showing result 16 - 20 of 52 swedish dissertations containing the words ring-opening polymerization.

  2. 16. Porous degradable polyester scaffolds

    Author : Peter Plikk; Ann-Christine Albertsson; Johan Lind; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; aliphatic polyester; copolymer; porous scaffold; ring-opening polymerization; electron beam; gamma irradiation; Polymerteknologi; Chemistry; Kemi;

    Abstract : Tissue engineering is a growing research field in which degradable porous scaffolds are used to regenerate tissue from the patients own cells. The problems due to donor shortage or the lack of full property restoration from prosthetic implants can thereby be overcome. READ MORE

  4. 17. Synthesis and Properties of Branched Semi-Crystalline Thermoset Resins

    Author : Hans Claesson; KTH; []
    Keywords : star-branched; semi-crystalline; comb-branched; ring-opening polymerization; poly ƒÕ-caprolactone ; dendritic; thermoset; low temperature curing; powder coating; UV-curing; poly 5; 5-dimethyl-1; 3-dioxane-2-one ; size exclusion chromatography; rheology;

    Abstract : This thesis describes the synthesis and characterization ofbranched semi-crystalline polymers. Included in this work isthe SEC characterization of a series of dendrimers. Thebranched semi-crystalline polymers were synthesized in order toinvestigate the concept of their use as powder coatings resins. READ MORE

  5. 18. degradable electroactive polymers: Synthesis, Macromolecular architecture and scaffold design

    Author : Baolin Guo; Ann-Christine Albertsson; Patric Jannasch; KTH; []
    Keywords : Poly lactide ; poly ε-caprolactone ; ring-opening polymerization; carboxyl-capped aniline trimer; carboxyl-capped aniline pentamer; phenyl amino-capped aniline tetramer; coupling reaction; DCC DMAP system; degradability; electroactivity; conductivity; macromolecular architecture; chitosan; hydrogel; block copolymer; functionalization; oxidative coupling reaction; self-assembly; toxicity; tubular porous scaffold; neural tissue engineering.;

    Abstract : Electrically conducting polymers induce specific cellular responses at the molecular level. One of the crucial limitations of the use of conducting polymers in tissue engineering is their inability to degrade. READ MORE

  6. 19. Exploiting chemical control in biomaterials

    Author : Tove Kivijärvi; Anna Finne Wistrand; Barner-Kowollik Christopher; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; biomaterial; controllable chemistry; polyester; ring-opening polymerization; hyaluronan; degradation; photoactivation; protein release; cell differentiation; biomaterial; kontrollerbar kemi; polyester; ring-öppnings polymerisering; hyaluronsyra; nedbrytning; fotoaktivering; frigöring av protein; celldifferentiering; Fiber- och polymervetenskap; Fibre and Polymer Science;

    Abstract : Chemistry and biology at the interphase will most likely give many of the answers to tomorrows medical challenges. Creating solutions to the problems at this interphase is benefiting from a collaborative research approach, driven by the need for development of chemistries or devices solving medical problems. READ MORE

  7. 20. Synthesis of Biomedical Polymers and Scaffold Design

    Author : Therese Tyson; Ann-Christine Albertsson; KTH; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; ring-opening polymerization; tin alkoxide initiator; stannous octoate; poly p-dioxanone ; copolymer; L-lactide; trimethylene carbonate; degradable porous scaffold; Polymer chemistry; Polymerkemi;

    Abstract : This work has focused on the development of new improved synthesis methods of biodegradable aliphatic polymers and on the preparation of porous scaffolds for tissue engineering applications. The aim of the first part of the work was the synthesis of poly(p-dioxanone) (PPDX) homopolymers with high molecular weights using the cyclic tin alkoxide initiator 1-di-n-butyl-1-stanna-2,5-dioxacyclopentane. READ MORE