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Effect of degree of saponification on properties of films obtained from PVA/NaCl/H2O system

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Abstract

Properties of the film obtained from the solution of atactic-polyvinyl alcohol (PVA)/NaCl/H2O system were investigated through changing the degree of saponification (DS) and NaCl concentration. The films had a higher crystallinity as well as a higher draw ratio than pure PVA film. Maximum values of degree of crystallinity and draw ratio of the films were 38.5% and 17.8, respectively. The highest tensile modulus of the films was at DS 99.05 mol% and NaCl concentration 2 wt.%. These results indicated that the NaCl concentration control has a beneficial effect on properties upgrade of PVA film, but the DS control was effective in control of degree of crystallinity.

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Authors and Affiliations

  1. Faculty of Textile Science and Technology, Shinshu University, Tokida 3-15-1, Ueda-city, Nagano-prefecture, 386-8567, Japan

    M. Iwaseya, N. Katsuyama & K. Yamaura

  2. Department of Polymeric Materials, College of Materials Engineering, Soochow University, 178 East Ganijang Road, Suzhou, Jiangsu, 215021, People's Republic of China

    L.-X. Dai

Authors
  1. M. Iwaseya
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  2. N. Katsuyama
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  3. K. Yamaura
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  4. L.-X. Dai
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Correspondence to M. Iwaseya.

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Iwaseya, M., Katsuyama, N., Yamaura, K. et al. Effect of degree of saponification on properties of films obtained from PVA/NaCl/H2O system. J Mater Sci 41, 1979–1982 (2006). https://doi.org/10.1007/s10853-006-3082-0

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  • DOI: https://doi.org/10.1007/s10853-006-3082-0

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