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Cellulose/poly(acryloyl morpholine) composites: synthesis by solution coagulation/bulk polymerization and analysis of phase structure

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Abstract

Cellulose/poly(acryloyl morpholine) (CELL/PACMO) compo sites were synthesized by bulk polymerization in the gel state of cellulose impregnated with reactive ACMO monomer. The thermal transition behaviour and phase structure of the CELL/PACMO composites obtained in film form were investigated by differential scanning calorimetry (DSC), dynamic mechanical analysis (DMA), and solid-state 13C NMR spectroscopy. For compositions rich in PACMO (CELL ≤ 30 wt %), it was revealed by DSC and DMA that the synthesized samples gave a composition-dependent Tg value higher than that of PACMO homopolymer, and the magnitude of the lowering of their dynamic modulus E′ in the glass transition region became extremely small in comparison with the corresponding drop in E′ noted for plain PACMO samples. These observations were interpreted as being due to the development of an interpenetrating polymer network (IPN)-type organization, resulting from successful fixation of an original netw ork structure of cellulose gels into the polymerized bulks. From the measurements of proton spin-lattice relaxation times in the NMR study, the IPN-like composites were estimated to be substantially homogeneous on a scale of a few nanometers. 0969--0239 © 1998 Blackie Academic & Professional

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Authors and Affiliations

  1. Department of BioEngineering, Nagaoka University of Technology Nagaoka, Niigata, Japan

    YOSHIHARU MIYASHITA, NORITAKA KIMURA & HIDEMATSU SUZUKI

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  1. YOSHIHARU MIYASHITA
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  2. NORITAKA KIMURA
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  3. HIDEMATSU SUZUKI
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  4. YOSHIYUKI NISHIO
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MIYASHITA, Y., KIMURA, N., SUZUKI, H. et al. Cellulose/poly(acryloyl morpholine) composites: synthesis by solution coagulation/bulk polymerization and analysis of phase structure. Cellulose 5, 123–134 (1998). https://doi.org/10.1023/A:1009224931504

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