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Facile Preparation of Gradient Structure Bacterial Cellulose Using Potato Starch

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Abstract:

Membranes of bacterial cellulose (BC) produced by Gluconacetobacter xylinus combines well-known cellulose properties with the outstanding features of nanoscale materials. As a remarkable benefit of BC, the property-controlling fiber network and pore system formed by self-assembly of the cellulose molecules can be modified in situ using additives during biosynthesis. The addition of potato starch (PS) caused the double-stage morphology of the BC/PS pellicles with an opaque dense upper part and a transparent porous lower part. Moreover, as the starch content went up, the double-stage morphology of BC/PS pellicle could be easily controlled. A gradient cross-section structure could be observed through the scanning electron microscopy (SEM) as potato starch addition level increased. The BC/PS nanocomposite structure was studied using X-ray diffraction and ATR-FTIR spectroscopy, and with the introduction of gelatinized starch, the crystallinity index (CrI) of BC/PS nanocomposite reduced from 82.40 % to 72.15 %. Meanwhile, tensile strength of the freeze-dried sample reached maximum as starch content was 0.5 wt%.

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Periodical:

Materials Science Forum (Volume 789)

Pages:

95-99

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.789.95

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Online since:

April 2014

Authors:

Jing Xuan Yang*, Shi Yan Chen, Hua Ping Wang

Keywords:

Bacterial Cellulose, Facile Fabrication, Gradient Structure, In Situ Modification, Potato Starch

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© 2014 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] D. Klemm, D. Schumann, F. Kramer, N. Heβler, M. Hornung, H.P. Schmauder, S. March, Nanocelluloses as innovative polymers in research and application, Adv. Polym. Sci. 205 (2006) 49-96.

DOI: 10.1007/12_097

Google Scholar

[2] N. Heβler and D. Klemm, Alteration of bacterial nanocellulose structure by in situ modification using polyethylene glycol and carbohydrate additives, Cellulose. 16 (2009) 899-910.

DOI: 10.1007/s10570-009-9301-5

Google Scholar

[3] D. Klemm, B. Heublein, H.P. Fink and A. Bohn, Cellulose: Fascinating biopolymer and sustainable raw material, Angew. Chem. Int. 44 (2005) 3358-3393.

DOI: 10.1002/anie.200460587

Google Scholar

[4] P. Ross, R. Mayer and M. Benziman, Cellulose biosynthesis and function in bacteria, Microbiol. Rev. 55 (1991) 35-38+IIA.

DOI: 10.1128/mr.55.1.35-58.1991

Google Scholar

[5] C. H. Haigler, A. R. White, R. M. Jr. Brown, K.M. Cooper, Alteration of in vivo cellulose ribbon assembly by carboxymethylcellulose and other cellulose derivatives, J. Cell. Biol. 94 (1982) 64-69.

DOI: 10.1083/jcb.94.1.64

Google Scholar

[6] S. Suzuki, A. Hirai, F. Horii, Formation and structure of the complexes of sub-elementary fibrils of bacterial cellulose with fluorescent brightener molecules, Cellulose. 19 (2012) 1607-1618.

DOI: 10.1007/s10570-012-9756-7

Google Scholar

[7] H.C. Huang, L.C. Chen, S.B. Lin, C.P. Hsu, H.H. Chen, In situ modification of bacterial cellulose network structure by adding interfering substances during fermentation, Bioresour. Techno. 101 (2010) 6084-6091.

DOI: 10.1016/j.biortech.2010.03.031

Google Scholar

[8] H.H. Chen, L.C. Chen, H.C. Huang, S.B. Lin, In situ modification of bacterial cellulose nanostructure by adding CMC during the growth of Gluconacetobacter xylinus, Cellulose. 18 (2011) 1573-1583.

DOI: 10.1007/s10570-011-9594-z

Google Scholar

[9] R.H. Atalla, D.L. Vanderhart, Native Cellulose: A Composite of Two Distinct Crystalline Forms, Science 223 (1984) 283-285.

DOI: 10.1126/science.223.4633.283

Google Scholar

[10] L. Seagal, J.J. Creely, A.E.J. Martin, C.M. Conrad, An empirical method for estimating the degree of crystallinity of native cellulose using X-ray diffractometer, Text. Res. J. 29 (1959) 786-794.

DOI: 10.1177/004051755902901003

Google Scholar

[11] Y. Marechal, H. Chanzy, The hydrogen bond network in I(β) cellulose as observed by infrared spectrometry, J. Mol. Struc. 523 (2000) 183-196.

DOI: 10.1016/s0022-2860(99)00389-0

Google Scholar

[12] W. Czaja, D. Romanovicz, R.M. Brown Jr., Molecular interactions in bacterial cellulose produced in stationary and agitated culture, Cellulose. 11 (2004) 403-411.

DOI: 10.1023/b:cell.0000046412.11983.61

Google Scholar

[13] R.M. Musampa, M.M. Alves, J.M. Maria, Phase separation, rheology and microstructure of pea protein-kappa-carrageenan mixtures, Food. Hydrocoll. 21 (2007) 92-99.

DOI: 10.1016/j.foodhyd.2006.02.005

Google Scholar