Sökning: "semicrystalline"

Visar resultat 11 - 12 av 12 avhandlingar innehållade ordet semicrystalline.

  1. 11. Longterm performance of polyolefins in different environments including chlorinated water: antioxidant consumption and migration and polymer degradation

    Författare :Marie Lundbäck; Ulf Gedde; Thomas Hjertberg; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Chemical engineering; polyethylene; polybutylene; HDPE; LLDPE; phenolic antioxidants; oxidation induction time OIT ; migration; chlorinated water; pressure testing; lifetime; chemical consumption.; Kemiteknik; Chemical engineering; Kemiteknik;

    Sammanfattning : The long-term performance of stabilized polyolefins in different environments was studied with focus on antioxidant consumption and migration. Plaques of linear polyethylene (LPE) and branched polyethylene (BPE) were stabilized with Santonox® R (4,4'-Thiobis(6-tert-butyl-3-methylphenol)), Irganox® 1081 (2,2’-Thiobis(4-methyl-6-tertbutylphenol)), or Lowinox® 22M46 (2,2’-Methylenebis(6-tert-butyl-4-methylphenol)). LÄS MER

  3. 12. Modification of stable and degradable polymers by heterogeneous grafting

    Författare :Mattias Ohrlander; KTH; []
    Nyckelord :;

    Sammanfattning : This thesis summarizes the investigations of the electronbeam initiated grafting of a hydrophilic monomer, acrylamide(AAm), onto three polymers; linear low density poly(ethylene)(LLDPE), poly(&-caprolactone) (PCL) and chemicallycrosslinked poly( 1,5-dioxepan-2-one) (PDXO-X). LLDPE and PCLare semicrystalline and PDXO-X is fully amorphous. LÄS MER