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Volumn 36, Issue 7, 1998, Pages 1153-1165

Nylon 6 9 can crystallize with hydrogen bonding in two and in three interchain directions

Author keywords

Even odd nylons; Hydrogen bonding schemes; Lamellar crystals; Structure

Indexed keywords

CRYSTAL GROWTH; CRYSTAL SYMMETRY; CRYSTALLIZATION; HYDROGEN BONDS; QUENCHING;

EID: 0032070174     PISSN: 08876266     EISSN: None     Source Type: Journal    
DOI: 10.1002/(SICI)1099-0488(199805)36:7<1153::AID-POLB6>3.0.CO;2-V     Document Type: Article
Times cited : (47)

References (38)
  • 21
    • 0028726992 scopus 로고
    • (b) E. D. T. Atkins, Macromol. Rep., A31 (Suppls. 6 & 7), 691 (1994).
    • (1994) Macromol. Rep. , vol.A31 , Issue.6-7 SUPPL. , pp. 691
    • Atkins, E.D.T.1
  • 29
    • 85034307448 scopus 로고    scopus 로고
    • note
    • 0.125 nm for the axial advance of each polymer backbone bond minus 0.01 nm for each of the shorter amide groups.
  • 30
    • 85034287662 scopus 로고    scopus 로고
    • note
    • 2 criteria for the γ-phase are as follows: (1) unit cell close to hexagonal; (2) c-repeat reduced by ≅0.04 nm per amide unit from that normally found for a wholly planar nylon conformation. This corresponds to a 4% reduction in the nylon 69 all-trans c-repeat.
  • 31
    • 85034309503 scopus 로고    scopus 로고
    • note
    • To achieve this, the torsional angles (≅130°) about the C-C bonds adjacent to the CO groups were given the same sign. The torsional angles (≅130°) about the C-N bonds adjacent to the NH groups were given the opposite sign.
  • 32
    • 85034297016 scopus 로고    scopus 로고
    • note
    • If the alkane segments were aligned in the ac-plane, the monoclinic angle would change from β to α for optimum hydrogen bonding. In this case, the unit cell would have the following parameters: a = 0.754 nm, b = 0.551 nm, c (chain axis) = 4.04 nm, and α = 108°.
  • 35
    • 85034280288 scopus 로고    scopus 로고
    • note
    • This is equivalent to a face-centered orthorhombic unit cell with the following parameters: a = 0.849 nm, b = 0.490 nm, c (chain axis) = 3.92 nm.


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.