Impact of Degree of Polymerization Combination on Structure and Properties of Cellulose Membrane

Jin Bao Li; Mei Yun Zhang; Hui Juan Xiu; Xin Ping Li

doi:10.4028/www.scientific.net/AMR.568.275

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 568Impact of Degree of Polymerization Combination on...

Impact of Degree of Polymerization Combination on Structure and Properties of Cellulose Membrane

Abstract:

Influence of degree of polymerization (DP) on the microstructure, crystallinity and strength properties of cellulose membrane were investigated in this paper; especially put forward a method of mixing different DP cellulose at different proportion to discuss more accurately effect of DP. The results show that the membrane at the proportion of 3:1 possesses the loosest structure, followed by 1:3 and 1:1 in turn. Cellulose’s crystalline structure had changed during NMMO process, and transformed from cellulose Ⅰ in cellulose pulps to cellulose Ⅱ in regenerated cellulose membrane, but could not form cellulose Ⅰ again. In addition, it can be found that crystallinity decrease remarkably, and the lattice size also reduces to a certain extent. Cellulose membrane at the proportion 1:1 was of the highest crystallinity and tensile strength, but its elongation keeps a continuous decline as mean DP decreasing.

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Periodical:

Advanced Materials Research (Volume 568)

Pages:

275-278

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.568.275

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Online since:

September 2012

Authors:

Jin Bao Li, Mei Yun Zhang, Hui Juan Xiu, Xin Ping Li

Keywords:

Cellulose Membrane, DP, NMMO, Property, Structure

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