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Microscopically-viewed relationship between the chain conformation and ultimate Youngs modulus of a series of arylate polyesters with long methylene segments.pdf
Polymer 55 (2014) 1799e1808
Contents lists available at ScienceDirect
Polymer
journal homepage: /locate/polymer
Microscopically-viewed relationship between the chain conformation
and ultimate Young’s modulus of a series of arylate polyesters with long methylene segments
Masafumi Tasaki a, Hiroko Yamamoto a, Taiyo Yoshioka a, Makoto Hanesaka a, Tran Hai Ninh a, Kohji Tashiro a,*, Hye Jin Jeon b, Kwang Bok Choi b, Hak Seung Jeong b, Hyun Hoon Song b, Moon Hor Ree c
a Department of Future Industry-Oriented Basic Science and Materials, Graduate School of Engineering, Toyota Technological Institute, Tempaku, Nagoya 468-8511, Japan b Department of Advanced Materials, College of Life Science and Nanotechnology, Hannam University, Daejeon 305-811, South Korea c Department of Chemistry, Division of Advanced Materials Science, Pohang University of Science and Technology, Pohang 790-784, South Korea
article info
Article history: Received 24 October 2013 Received in revised form 29 December 2013 Accepted 31 January 2014 Available online 8 February 2014
Keywords: X-ray crystal structure analysis Crystalline Young’s modulus Arylate polyester with long methylene segments
abstract
Relationship between the chain conformation in the crystal lattice and the ultimate Young’s modulus has been discussed on the basis of the crystal structural information revealed by the X-ray diffraction analysis for a series of arylate polyesters with long methylene segments (e[eCOC6H4COeO(CH2)mOe]ne). The Xray structural analysis revealed that the molecular chains take the all-trans-zigzag conformations for all of the even-numbered polyesters and their model compounds as well as the odd-numbered polyesters with the methylene segmental length longer than (CH2)14. These chain conformations have been correlated well to the ultimate Young’s modulus along the chain axis or the crystallite modulus Ec, which has been estimated experimentally by the X-ray diffraction method under a constant stress and also pred
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