Sökning: "polymerization."

Visar resultat 1 - 5 av 342 avhandlingar innehållade ordet polymerization..

1. 1. Graft polymerization

   Författare :Torbjörn Lindberg; KTH; []
   Nyckelord :;

   Sammanfattning : This thesis is focused on morphological aspects of polymericsubstrates used in graft polymerization. Morphological changesof selected polymer systems were investigated in the virginstate and after irradiation, during the progress of graftpolymerization, in the final grafted state and duringsubsequent degradation. LÄS MER

3. 2. Understanding the mechanisms behind atom transfer radical polymerization : exploring the limit of control

   Författare :Helena Bergenudd; Mats Jonsson; Eva Malmström Jonsson; David M Haddleton; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; polymerization; controlled radical polymerization; atom transfer radical polymerization; kinetics; catalysis; electrochemistry; Polymer chemistry; Polymerkemi;

   Sammanfattning : Atom transfer radical polymerization (ATRP) is one of the most commonly employed techniques for controlled radical polymerization. ATRP has great potential for the development of new materials due to the ability to control molecular weight and polymer architecture. LÄS MER

4. 3. Biochemical Control Aspects in Lignin Polymerization

   Författare :Anders Holmgren; Gunnar Henriksson; Liming Zhang; Jussi Sipilä; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lignin polymerization; DHP; Ascorbic Acid; NADH; template polymerization; melanin; Chemistry; Kemi;

   Sammanfattning : Lignins are produced by all vascular plants and they represent one of the most abundant groups of biopolymers in nature. Lignin chemistry research, which has been of great importance for the progress of pulping technologies, has been plagued by the difficulties of its isolation and characterization. LÄS MER

5. 4. 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

7. 5. Lipase-Catalyzed Syntheses of Telechelic Polyesters

   Författare :Magnus Eriksson; Karl Hult; Mats Martinelle; Sergio Riva; KTH; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Candida antarctica lipase B; lipase-catalysis; polymerization; telechelic; functional polyesters; ring-opening polymerization; polycondensation.; Biochemistry; Biokemi;

   Sammanfattning : Telechelic polyesters have successfully been synthesized with lipase-catalyzed polymerization. The produced telechelics had a high degree of di­functionalization, high purity (requiring little or no workup) and controlled degree of polymerization. The syntheses were performed in one-pot one-step reaction systems. LÄS MER