Sökning: "Esterification"

Visar resultat 31 - 35 av 67 avhandlingar innehållade ordet Esterification.

1. 31. Poly(ethylene-graft-ethylene oxide) Preparation and Properties in Polymer Blends

   Författare :Åsa Halldén; Centrum för analys och syntes; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Surface modification; Graft copolymers; Polymer blends; Polyethylene; Polyethylene oxide; Polyamide; Polymer technology; biopolymers; Polymerteknik;

   Sammanfattning : This thesis describes the preparation, characterisation and properties of poly(ethylene-graft-ethylene oxide) (PE-PEO). The grafting reaction was carried out with the grafting onto method using the carboxylic acid groups of poly(ethylene-co-acrylic acid) (PEAA) as reactive sites in an esterification reaction with poly(ethylene oxide) mono-methyl ethers (MPEO) of varying molecular weights: 750, 2000 and 5000. LÄS MER

3. 32. Cationic Dendritic Polymers and Their Hybridization with Cellulose Nanofibrils

   Författare :Faridah Namata; Michael Malkoch; Lars Wågberg; Francisco Javier de la Mata de la Mata; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Dendritic polymers; antibacterial materials; carboxylated cellulose nanofibrils; hybrid hydrogels; bis-MPA polyester dendrimers; dendritic linear dendritic; Fiber- och polymervetenskap; Fibre and Polymer Science;

   Sammanfattning : Antimicrobial resistance (AMR) is one of the major global threats to thehealth of humans, animals, plants and ecosystems. AMR arises whenbacteria, viruses, fungi, and parasites undergo changes over time; makingmedicines such as antibiotics, antivirals, antifungals and antiparasiticineffective at treating infections. LÄS MER

4. 33. Modelling of tolerance and rebound in normal and diseased rats

   Författare :Christine Ahlström; Göteborgs universitet; []
   Nyckelord :feedback modelling; tolerance; rebound; pharmacokinetics; pharmacodynamics; dyslipidaemia; nicotinic acid; non-esterified fatty acids;

   Sammanfattning : The development of rebound and tolerance is an important consideration when optimizing medical therapy, both with respect to drug dosing and adverse effects. By using quantitative approaches to study these processes, potential risks can be minimized. LÄS MER

5. 34. Green plasticizers for PVC - An investigation of renewable alternatives to phthalates derived from vegetable oils or wood industry products

   Författare :Anna Bondeson; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; PVC; Epoxidized vegetable oils; Crosslinking; Plasticizer; Heat ageing; Lignin.; Tall oil fatty acid;

   Sammanfattning : Polyvinyl chloride (PVC) is a very versatile thermoplastic because of its ability to solve a broad range of different concentrations of plasticizer. Phthalates are still the most commonly used plasticizer in PVC, but due to public opinion and legislation against phthalates there is a demand in the market for both old and new phthalate free plasticizersProperties of epoxidized oils of soybean (ESBO), canola (ECO), sunflower (ESFO) and safflower (ESAO) were investigated to determine their suitability as plasticizers. LÄS MER

7. 35. Effects of Molecular Architecture of Xylans on Material Properties

   Författare :Maria Gröndahl; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Xylans are among the most abundant polymers on earth. Nature has created xylans with different molecular structures in different plant species. This molecular architecture is not a coincidence but is tailored to create a particular desirable functionality. LÄS MER