Sökning: "4-butanediol"

Hittade 4 uppsatser innehållade ordet 4-butanediol.

  1. 1. Synthesis and characterization of lactic acid-based elastomers

    Master-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Författare :Afsaneh Makhdoumi; [2023]
    Nyckelord :Lactic acid; Elastomer; Bio-based elastomer; Renewable resource;

    Sammanfattning : Synthesized polymer from bio-based and renewable resources reported as an attractive substitution for fossil-fuel based polymers. Therefore, this work has focused on using sustainable material for production of elastomers to reduce the environmental impact of fossil-based elastomers and overcome the shortage of non-renewable fuels. LÄS MER

  3. 2. Exploration of bioactive additives for hyaluronan based hydrogels : A literature study

    Kandidat-uppsats,

    Författare :Tilda Eriksson; Lisa Quakkelaar; Alexander Parkstam; Alina Karlsson; Mansourah Askari; Shukri Said Ahmed; [2022]
    Nyckelord :Hyaluronan; Hyaluronic Acid; HA; 1; 4-Butanediol diglycidyl ether; BDDE; polynucleotides; mannitol; biomedical applications; dermatological fillers; fillers; Hyaluronan; Hyaluronsyra; HA; 1; 4-butandiol diglycidyleter; BDDE; polynukleotider; mannitol; biomedicinska applikationer; dermatologiska fyllmedel; fyllmedel;

    Sammanfattning : Hyaluronan (HA) is a substance that is commonly used in biomedical applications in the form of hydrogels. One of these biomedical applications is dermatological fillers where HA is cross-linked with 1,4-Butanediol diglycidyl ether (BDDE) to reduce its rapid turnover within tissue. The filler gives a volumetric effect that can fill out wrinkles. LÄS MER

  4. 3. Development Of Bio-Based Thermosetting Resins

    Master-uppsats, Högskolan i Borås/Akademin för textil, teknik och ekonomi

    Författare :Snehaben Gaurangkumar Mistry; [2021]
    Nyckelord :Bio-based polymer; Resin; lactide; lactone; isosorbide; butanediol; polymerisation; characterisation; FTIR; NMR; TGA; DMA;

    Sammanfattning : Thermoset polymers are widely used polymers in the world, but Increase in global plastic pollution and lack of fossil fuel stimulates intense research towards environmentally sustainable materials. Bio-based unsaturated polyesters (UPs) would be an excellent solution to replace oil-based synthetic polyesters. LÄS MER

  5. 4. Utveckling av en LC-MS-metod för analys av gamma-hydroxibutyrat, gamma-butyrolakton, 1,4-butandiol, amfetamin och metadon

    Magister-uppsats, Institutionen för fysik, kemi och biologi

    Författare :Birgitta Petersson; [2007]
    Nyckelord :gamma-butyrolactone; 1; 4-butanediol; amphetamine; methadone; experimental design; LC-MS; gamma-hydroxybutyrate; LC-MS; gamma-hydroxibutyrat; gamma-butyrolakton; 1; 4-butandiol; amfetamin; metadon; försöksplanering;

    Sammanfattning : In this project a LC-MS-method for the analysis of gamma-hydroxybutyrate, gamma-butyrolactone, 1,4-butanediol, amphetamine and methadone was developed. Initially, the efficiency of the ionisation of the analytes was evaluated with respect to the ionisation technique (ESI, APCI and APPI) and the composition of the mobile phase. LÄS MER