Transcrystallization at the interface of polyethylene single-polymer composites



Document title: Transcrystallization at the interface of polyethylene single-polymer composites
Journal: Materials research
Database: PERIÓDICA
System number: 000312406
ISSN: 1516-1439
Authors: 1
2
Institutions: 1Universidade Federal de Sao Carlos, Departamento de Engenharia de Materiais, Sao Carlos, Sao Paulo. Brasil
2Eindhoven University of Technology, Dortmund, Nordrhein-Westfalen. Alemania
Year:
Season: Oct
Volumen: 2
Number: 4
Pages: 261-269
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Descriptivo
English abstract The phenomenon of transcrystallization was studied at the interface of UHMWPE fibers embedded in an HDPE matrix. It was hoped that epitaxial crystallization in such model composites could eventually be used to improve adhesion between these high-strength fibers and the thermoplastic matrix material. Matrix crystallization was induced and accompanied on a specially designed hot stage which made the crystallization front advance slowly along a thermal gradient. Transcrystalline interfacial layers were observed without regard to temperature conditions, but with widely varying dimensions. Lamellar resolution within these layers was achieved by low voltage scanning electron microscopy, and the very beginning of transcrystallization was observed in sample areas where UHMWPE fiber segments were only partially embedded into the HDPE matrix. Lamellar alignment on the fiber surface indicated that transcrystallization in this system was associated with epitaxial nucleation
Disciplines: Ingeniería,
Química
Keyword: Ingeniería de control,
Ingeniería electrónica,
Química de polímeros,
Cristalización,
Epitaxia,
Microscopía
Keyword: Engineering,
Chemistry,
Control engineering,
Electronic engineering,
Polymer chemistry,
Crystallization,
Epitaxy,
Microscopy
Full text: Texto completo (Ver HTML)