Characterization and mechanical properties investigation of the cellulose/gypsum composite

被引:59
作者
Nindiyasari, Fitriana [1 ]
Griesshaber, Erika [1 ]
Zimmermann, Tanja [2 ]
Manian, Avinash Pradip [3 ]
Randow, Clemens [4 ]
Zehbe, Rolf [4 ]
Fernandez-Diaz, Lurdes [5 ,6 ]
Ziegler, Andreas [7 ]
Fleck, Claudia [4 ]
Schmahl, Wolfgang W. [1 ]
机构
[1] Univ Munich, Dept Geo & Umweltwissensch, D-80333 Munich, Germany
[2] Swiss Fed Labs Mat Sci & Technol EMPA, Dept Appl Wood Mat, Basel, Switzerland
[3] Univ Insbruck, Res Inst Textil Chem & Text Phys, Lab Text & Fiber Chem Cellulos, Insbruck, Austria
[4] Tech Univ Berlin, Dept Mat Engn, Berlin, Germany
[5] Univ Complutense, Dept Crystallog & Mineral, Madrid, Spain
[6] UCM, CSIC, IGEO, Inst Geosci, Madrid, Spain
[7] Univ Ulm, Cent Facil Electron Microscopy, D-89069 Ulm, Germany
关键词
Gypsum; hemihydrate; sodium alginate; cellulose fiber; mechanical properties; porosity; NANOFIBRILLATED CELLULOSE; GYPSUM; PLASTER; HYDRATION; FIBERS; HEMIHYDRATE; BEHAVIOR; NMR; REINFORCEMENT;
D O I
10.1177/0021998315580826
中图分类号
TB33 [复合材料];
学科分类号
摘要
We synthesized cellulose/gypsum composites in the presence and absence of sodium alginate and investigated the interaction between the composite components as well as the mechanical properties of the final composites. Four different types of cellulose fiber materials were used: cellulose UFC100, cellulose B400, nanofibrillated cellulose, and Lyocell fiber. For all investigated composites the total amount of admixed cellulose was between 1 and 2 wt%, the amount of admixed sodium alginate was 0.5 wt%. We determined the morphology of the composites and observed that the particle and fiber dimensions of the admixed cellulose affect the mode of gypsum-gypsum interlocking and the total porosity of the composites. This in turn had a substantial influence on the mechanical properties of the final composite materials. The addition of sodium alginate resulted in an increase of ultimate strain values. Composites with Lyocell fiber, a synthetic fiber, also had a high Young's modulus.
引用
收藏
页码:657 / 672
页数:16
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