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Novel cellulose derivatives. V. Synthesis and thermal properties of esters with trifluoroethoxy acetic acid

2000; Wiley; Volume: 38; Issue: 3 Linguagem: Inglês

10.1002/(sici)1099-0488(20000201)38

1099-0488

James E. Sealey, Charles E. Frazier, Gamini Samaranayake, Wolfgang G. Glasser,

Material Properties and Applications

Journal of Polymer Science Part B: Polymer PhysicsVolume 38, Issue 3 p. 486-494 Article Novel cellulose derivatives. V. Synthesis and thermal properties of esters with trifluoroethoxy acetic acid James E. Sealey, James E. Sealey Department of Wood Science and Forest Products, and Biobased Materials/Recycling Center, Virginia Polytechnic Institute and State University, 210 Cheatham Hall, Blacksburg, Virginia 24061Search for more papers by this authorCharles E. Frazier, Charles E. Frazier Department of Wood Science and Forest Products, and Biobased Materials/Recycling Center, Virginia Polytechnic Institute and State University, 210 Cheatham Hall, Blacksburg, Virginia 24061Search for more papers by this authorGamini Samaranayake, Gamini Samaranayake Department of Wood Science and Forest Products, and Biobased Materials/Recycling Center, Virginia Polytechnic Institute and State University, 210 Cheatham Hall, Blacksburg, Virginia 24061Search for more papers by this authorWolfgang G. Glasser, Corresponding Author Wolfgang G. Glasser wglasser@vt.edu Department of Wood Science and Forest Products, and Biobased Materials/Recycling Center, Virginia Polytechnic Institute and State University, 210 Cheatham Hall, Blacksburg, Virginia 24061Department of Wood Science and Forest Products, and Biobased Materials/Recycling Center, Virginia Polytechnic Institute and State University, 210 Cheatham Hall, Blacksburg, Virginia 24061Search for more papers by this author James E. Sealey, James E. Sealey Department of Wood Science and Forest Products, and Biobased Materials/Recycling Center, Virginia Polytechnic Institute and State University, 210 Cheatham Hall, Blacksburg, Virginia 24061Search for more papers by this authorCharles E. Frazier, Charles E. Frazier Department of Wood Science and Forest Products, and Biobased Materials/Recycling Center, Virginia Polytechnic Institute and State University, 210 Cheatham Hall, Blacksburg, Virginia 24061Search for more papers by this authorGamini Samaranayake, Gamini Samaranayake Department of Wood Science and Forest Products, and Biobased Materials/Recycling Center, Virginia Polytechnic Institute and State University, 210 Cheatham Hall, Blacksburg, Virginia 24061Search for more papers by this authorWolfgang G. Glasser, Corresponding Author Wolfgang G. Glasser wglasser@vt.edu Department of Wood Science and Forest Products, and Biobased Materials/Recycling Center, Virginia Polytechnic Institute and State University, 210 Cheatham Hall, Blacksburg, Virginia 24061Department of Wood Science and Forest Products, and Biobased Materials/Recycling Center, Virginia Polytechnic Institute and State University, 210 Cheatham Hall, Blacksburg, Virginia 24061Search for more papers by this author First published: 04 January 2000 https://doi.org/10.1002/(SICI)1099-0488(20000201)38:3 3.0.CO;2-SCitations: 24Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract Esters of cellulose with trifluoroethoxy acetic acid (TFAA) were prepared in homogeneous phase using a mixed anhydride with p-toluenesulfonic acid. Esters with low degree of substitution (DS), and with DS rising from 0 to 3, had hydrophobic character that prevented the usual association with moisture, which is otherwise typical of cellulose esters with low DS. Cellulose trifluoroethoxy acetate (CT) had Tg's declining by about 40 °C per DS-unit (from 160 to 41 °C) as DS rose from 1 to 3. Mixed esters, cellulose derivatives with acetate and trifluoroethoxy acetate substituents (CAT), exhibited glass-to-rubber and melting transitions by DSC. A linear relationship between both Tg and Tm with respect to DS was recorded with the Tg and Tm separated by 30° to 40 °C. This is consistent with cellulose esters described elsewhere. Surprisingly, the Tg's of CT and CAT were found to be identical when the DS was equivalent to the DS of the fluoro substituents (DSF). © 2000 John Wiley & Sons, Inc. J Polym Sci B: Polym Phys 38: 486–494, 2000 Citing Literature Volume38, Issue31 February 2000Pages 486-494 RelatedInformation