Sökning: "PNIPAM"

Hittade 3 uppsatser innehållade ordet PNIPAM.

  1. 1. Ion specific effects in polymer conformation

    Kandidat-uppsats, KTH/Tillämpad fysikalisk kemi

    Författare :Lovisa Svanholm; Anna Köttö; Samuel Deuda Lundkvist; [2021]
    Nyckelord :Poly N-isopropylacrylamid ; PNIPAM; pre-transitional chain collapse; ion specific effects; Hoffmeister series; LCST; diffusion NMR; self-diffusion NMR; fractionation; kosmotropes; chaotropes; inversion recovery experiment;

    Sammanfattning : It is well known that ions affect polymers in specific ways not solely based on electric charge, usually referred to as the Hoffmeister effect or ion specific effects. Poly(N-isopropylacrylamid) (PNIPAM) is a thermosensitive polymer with a LCST at 32℃. LÄS MER

  3. 2. Synthesis and characterization of amine-functionalized microgel particles and their subsequent assembly into colloidal molecule-like clusters by droplet-based microfluidics

    Kandidat-uppsats, Lunds universitet/Kemiska institutionen

    Författare :Emil Gustafsson; [2015]
    Nyckelord :Physical chemistry; fysikalisk kemi; Chemistry;

    Sammanfattning : The ability of thermoresponsive, amine-functionalized microgel particles to take part in microgelmicrogel inter-cross-linking has previously been reported in the literature, in connection to applications such as for example the formation of stimuli-responsive colloidal gels and colloidosomes [1]. This thesis deals with the synthesis of such thermoresponsive, cross-linkable microgels and their subsequent assembly into clusters using droplet-based microfluidics, with the goal of forming responsive colloidal molecules with well-defined valency. LÄS MER

  4. 3. Ion association to poly(N-isopropylacrylamide) by diffusion and electrophoretic NMR

    Master-uppsats, KTH/Skolan för kemivetenskap (CHE)

    Författare :Cedrik Wiberg von Schantz; [2013]
    Nyckelord :PNIPAM; poly N-isopropylacrylamide ; electrophoretic NMR; diffusion NMR; LCST; ion association;

    Sammanfattning : PNIPAM (poly(N-Isopropylacrylamide)) is a well-known thermoresponsive polymer. Dissolved in water, it shows a structural change at 32 oC, above which the polymer folds together, and a phase separation occurs. LÄS MER