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A study of nano‐mechanical and macro‐mechanical properties of ethylene vinyl acetate
Author(s) -
Kim Jaehyun,
Wang Janson,
Kang HoJong,
Talke Frank
Publication year - 2008
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.20883
Subject(s) - crystallinity , materials science , nanoindentation , nano , composite material , ethylene vinyl acetate , ultimate tensile strength , modulus , young's modulus , vinyl acetate , indentation hardness , elastic modulus , macro , polymer , microstructure , copolymer , computer science , programming language
Nano‐ and macro‐mechanical properties of ethylene vinyl acetate (EVA) with various amounts of vinyl acetate (VA) have been investigated. Nano‐mechanical properties (modulus and hardness) were obtained using nano‐indentation measurements while macro‐mechanical properties were determined using tensile test measurements. A decrease in Young's modulus and hardness was observed with increasing VA content for both nano‐ and macro‐mechanical measurements. An increase in Young's modulus and hardness was observed as a function of the draw ratio keeping the VA content constant. The difference between macro‐ and nano‐mechanical properties as a function of VA content and draw ratio is explained in terms of crystallinity and chain orientation. POLYM. ENG. SCI., 2008. © 2007 Society of Plastics Engineers