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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Study of the mechanism of the esterification of cellulose and its effect on the solubility of the product.

Ward, John Edward 06 1900 (has links)
No description available.
2

The mechanism involved in the methylation of cellulose acetate and of cellulose dissolved in trimethylbenzylammonium hydroxide

Johnston, Gerald G. (Gerald Gale) 01 January 1940 (has links)
No description available.
3

The position of free hydroxyl groups in acetone-soluble cellulose acetate /

Sunderworth, Stanley G. January 1955 (has links)
No description available.
4

The effect of chain growth retardation in the graft polymerization of styrene onto cellulose acetate

Hamburger, C. Joseph 01 January 1967 (has links)
No description available.
5

The effect of the hydroxyl groups of cellulose on its papermaking properties

Bletzinger, J. C. (John Calvin) 01 January 1940 (has links)
No description available.
6

Applications of cellulose acetate phthalate aqueous dispersion (Aquacoat CPD) for enteric coating

Liu, Jiping, January 2001 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2001. / Vita. Includes bibliographical references. Available also from UMI/Dissertation Abstracts International.
7

An investigation of the haze in cellulose acetates made from wood pulps

Bradway, Keith Emerson, January 1953 (has links) (PDF)
Thesis (Ph. D.)--Institute of Paper Chemistry, 1953. / Includes bibliographical references (leaves 73-75).
8

Applications of cellulose acetate phthalate aqueous dispersion (Aquacoat CPD) for enteric coatin

Liu, Jiping, 1971- 28 March 2011 (has links)
Not available / text
9

The solubility of cellulose acetate fractions

Lee, Hsueh-Ting January 1956 (has links)
no abstract provided by author / Master of Science
10

An investigation into the use of digital techology to manage deteriorating cellulose acetate negatives

Leggio, Angeletta, n/a January 2002 (has links)
This thesis aims to examine the issues involved in utilising digital images and assess whether image processing techniques can be used as a cost-effective method of reconstructing the image found in a deteriorated cellulose acetate negative. Negatives affected by the vinegar syndrome are found in large numbers within Australian institutions. This was confirmed by a survey (using a questionnaire) undertaken at the National Library of Australia in 2000. The survey also found that although these collections are large, and hence the level of deterioration variable, little could be done to restore any of the negatives once deterioration had begun. Storing negatives at low temperature and low relative humidity slows down the breakdown of cellulose acetate; however, it cannot reverse the process once it has commenced. Although removing the gelatine pellicular from the deteriorated cellulose acetate support (making the image easier to view) a possible method of restoration, this becomes unfeasible when dealing with a large collection. As a result, how to manage cellulose acetate negatives once they have deteriorated becomes problematic. Image-processing techniques used to digitally restore these negatives were examined via a series of case studies. These examinations were undertaken using two software packages-the Image Processing Tool kit (IPTK) and OPTIMAS. Deteriorated cellulose acetate negatives were scanned, then a number of program filters were applied to the digital image to determine whether disfiguring elements (referred to as channelling elements) resulting from the deteriorated support could be digitally removed. IPTK and OPTIMAS were not completely successful in removing the deteriorated elements from the digital version. The results highlighted that a number of issues relating to the use of digital technology needed to be addressed. These issues included knowledge of basic technical terms, an understanding of digital language, and how to include the use of digital technology into a long-term strategy for archiving a digitised collection. This thesis showed that issues relating to utilising digital systems could be addressed by implementing a preservation management plan. A preservation management plan can be used to incorporate the goals of digitising, the long-term issues of retaining digital files, ongoing access relating to the digital file, hardware and software, and the importance of having the relevant expertise when undertaking such a project. Due to the limitations of the printed hardcopy displaying features in a number of the images (figures) outlined in this thesis, a compact disk (CD) has been included with this submission and can be found at the end of this document.

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