Thermal behavior of cellulose acetate produced from homogeneous acetylation of bacterial cellulose

被引：268

作者：

Barud, Hernane S. ^{[1
]}

de Araujo Junior, Adalberto M. ^{[1
]}

Santos, Daniele B. ^{[1
]}

de Assuncao, Rosana M. N. ^{[2
]}

Meireles, Carla S. ^{[2
]}

Cerqueira, Daniel A. ^{[2
]}

Rodrigues Filho, Guimes ^{[2
]}

Ribeiro, Clovis A. ^{[1
]}

Messaddeq, Younes ^{[1
]}

Ribeiro, Sidney J. L. ^{[1
]}

机构：

[1] UNESP, Inst Chem, Dept Inorgan & Gen Chem, BR-14801970 Araraquara, SP, Brazil

[2] Univ Fed Uberlandia, Inst Chem, BR-38400902 Uberlandia, MG, Brazil

来源：

THERMOCHIMICA ACTA | 2008年 / 471卷 / 1-2期

基金：

巴西圣保罗研究基金会;

关键词：

bacterial cellulose; homogeneous acetylation; cellulose acetate; thermal properties;

D O I：

10.1016/j.tca.2008.02.009

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Cellulose acetate (CA) is one of the most important cellulose derivatives and its main applications are its use in membranes, films, fibers, plastics and filters. CAs are produced from cellulose sources such as: cotton, sugar cane bagasse, wood and others. One promissory source of cellulose is bacterial cellulose (BC). In this work, CA was produced from the homogeneous acetylation reaction of bacterial cellulose. Degree of substitution (DS) values can be controlled by the acetylation time. The characterization of CA samples showed the formation of a heterogeneous structure for CA samples submitted to a short acetylation time. A more homogeneous structure was produced for samples prepared with a long acetylation time. This fact changes the thermal behavior of the CA samples. Thermal characterization revealed that samples submitted to longer acetylation times display higher crystallinity and thermal stability than samples submitted to a short acetylation time. The observation of these characteristics is important for the production of cellulose acetate from this alternative source. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：61 / 69

页数：9

共 18 条

[1]

Thermal characterization of bacterial cellulose-phosphate composite membranes [J].

Barud, H. S. ;

Ribeiro, C. A. ;

Crespi, Marisa S. ;

Martines, M. A. U. ;

Dexpert-Ghys, J. ;

Marques, R. F. C. ;

Messaddeq, Y. ;

Ribeiro, S. J. L. .

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2007, 87 (03) :815-818

[2]

Self-supported silver nanoparticles containing bacterial cellulose membranes [J].

Barud, Hemane S. ;

Barrios, Celina ;

Regiani, Thais ;

Marques, Rodrigo F. C. ;

Verelst, Marc ;

Dexpert-Ghys, Jeannette ;

Messaddeq, Younes ;

Ribeiro, Sidney J. L. .

MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS, 2008, 28 (04) :515-518

[3]

A new value for the heat of fusion of a perfect crystal of cellulose acetate [J].

Cerqueira, DA ;

Rodrigues, G ;

Assunçao, RMN .

POLYMER BULLETIN, 2006, 56 (4-5) :475-484

[4]

Advances in cellulose ester performance and application [J].

Edgar, KJ ;

Buchanan, CM ;

Debenham, JS ;

Rundquist, PA ;

Seiler, BD ;

Shelton, MC ;

Tindall, D .

PROGRESS IN POLYMER SCIENCE, 2001, 26 (09) :1605-1688

[5]

Biodegradable polymers for the environment [J].

Gross, RA ;

Kalra, B .

SCIENCE, 2002, 297 (5582) :803-807

[6]

Khanna YP, 1997, J POLYM SCI POL PHYS, V35, P2219, DOI 10.1002/(SICI)1099-0488(199710)35:14<2219::AID-POLB3>3.0.CO

[7]

2-R

[8]

Surface acetylation of bacterial cellulose [J].

Kim, DY ;

Nishiyama, Y ;

Kuga, S .

CELLULOSE, 2002, 9 (3-4) :361-367

[9]

Cellulose: Fascinating biopolymer and sustainable raw material [J].

Klemm, D ;

Heublein, B ;

Fink, HP ;

Bohn, A .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2005, 44 (22) :3358-3393

[10]

13C CPMAS NMR investigations of cellulose polymorphs in different pulps [J].

Maunu, S ;

Liitiä, T ;

Kauliomäki, S ;

Hortling, B ;

Sundquist, J .

CELLULOSE, 2000, 7 (02) :147-159

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