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Cellulose

, Volume 18, Issue 6, pp 1441–1454 | Cite as

Cellulose acetate/poly(methyl methacrylate) interpenetrating networks: synthesis and estimation of thermal and mechanical properties

  • Dan Aoki
  • Yoshikuni Teramoto
  • Yoshiyuki Nishio
Article

Abstract

IPN-type composites consisting of cellulose acetate (CA) and poly(methyl methacrylate; PMMA) were successfully synthesized in film form. In this synthesis, a mercapto group (SH)-containing CA, CA-MA, was prepared in advance by esterification of CA with mercaptoacetic acid, and then intercomponent cross-linking between CA-MA and PMMA was attained by thiol–ene polymerization of methyl methacrylate (MMA) onto the CA-MA substrate. For comparison, polymer synthesis was also attempted to produce a semi-IPN type of composites comprising CA and cross-linked PMMA, via copolymerization of MMA and ethylene glycol dimethacrylate as cross-linker in a homogeneous system containing CA solute. Thermal and mechanical properties of thus obtained polymer composites were investigated by differential scanning calorimetry, dynamic mechanical analysis, and a tensile test, in correlation with the mixing state of the essentially immiscible cellulosic and methacrylate polymer components. It was shown that the specific IPN technique using thiol–ene reactions usually resulted in a much better compatibility-enhanced polymer composite, which exhibited a higher tensile strength and even an outstanding ductility without parallel in any film sample of CA, PMMA, and their physical blends.

Keywords

Cellulose acetate Poly(methyl methacrylate) Composites Interpenetrating network (IPN) Thiol-ene polymerization 

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Copyright information

© Springer Science+Business Media B.V. 2011

Authors and Affiliations

  • Dan Aoki
    • 1
  • Yoshikuni Teramoto
    • 1
  • Yoshiyuki Nishio
    • 1
  1. 1.Division of Forest and Biomaterials Science, Graduate School of AgricultureKyoto UniversitySakyo-ku, KyotoJapan

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