Sökning: "tin alkoxide"

Hittade 4 avhandlingar innehållade orden tin alkoxide.

1. 1. Controlled Ring-Opening Polymerization : Mechanism and Synthesis of Macromolecular Architectures with Tailored Properties

   Författare :Maria Ryner; KTH; []
   Nyckelord :controlled ring-opening polymerization; poly L-lactide ; poly 1; 5-dioxepan-2one ; stannous octoate; tin alkoxide; DFT methods; mechanism; triblock; multiblock; tailored hydrophilicity; elastomers; resorbable materials;

   Sammanfattning : .... LÄS MER

3. 2. Synthesis of Biomedical Polymers and Scaffold Design

   Författare :Therese Tyson; Ann-Christine Albertsson; KTH; []
   Nyckelord :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;

   Sammanfattning : 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. LÄS MER

4. 3. Bioresorbable copolymers with tailored properies : innovative materials för soft tissuel engineering

   Författare :Natalia Andronova; Ann-Christine Albertsson; Pieter Dijkstra; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; poly 1; 5-dioxepan-2-one ; poly ε-caprolactone ; poly L-lactide ; poly trimethylene carbonate ; triblock; network; cyclic tin alkoxide; controlled coordination-insertion ring-opening polymerization; thermoplastic elastomers; Polymer chemistry; Polymerkemi;

   Sammanfattning : The emerging need for new synthetic materials for soft tissue engineering applications encourages the search for innovative polymers having interesting properties. Ring-opening polymerization of lactones and lactides initiated by tin alkoxides has received particular attention due to the versatility of the method for building up well-defined biodegradable structures. LÄS MER

5. 4. Synthetic Pathways to Aliphatic Polyesters and Scaffold Design

   Författare :Therese Tyson; Ann-Christine Albertsson; Elisabetta Ranucci; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Polymer chemistry; Polymerkemi;

   Sammanfattning : As the field of tissue engineering progresses, a continuous development of scaffold fabrication techniques and suitable degradable materials is required to obtain scaffolds with tunable characteristics. This thesis has focused on the development of pathways to synthesize degradable aliphatic polyesters and on the design of highly porous scaffolds from this class of materials. LÄS MER