Decreasing the Alkyl Branch Frequency in Precision Polyethylene: Pushing the Limits toward Longer Run Lengths

Autor:	Bora Inci, Kenneth B. Wagener
Rok vydání:	2011
Předmět:	chemistry.chemical_classification Analytical chemistry General Chemistry Polymer Polyethylene Biochemistry Catalysis chemistry.chemical_compound Colloid and Surface Chemistry Monomer Reflection (mathematics) chemistry Polymerization Polymer chemistry Orthorhombic crystal system Methylene Alkyl
Zdroj:	Journal of the American Chemical Society. 133:11872-11875
ISSN:	1520-5126 0002-7863
DOI:	10.1021/ja2040046
Popis:	A symmetrical α,ω-diene monomer with a 36 methylene run length was synthesized and polymerized, and the unsaturated polymer was hydrogenated to generate precision polyethylene possessing a butyl branch on every 75th carbon (74 methylenes between branch points). The precision polymer sharply melts at 104 °C and exhibits the typical orthorhombic unit cell structure with two characteristic wide-angle X-ray diffraction (WAXD) crystalline peaks observed at 21.5° and 24.0°, corresponding to reflection planes (110) and (200), respectively.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d08adde7dc9040f82b81fd48f6db5dae https://doi.org/10.1021/ja2040046 Zobrazit plný text záznamu