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You searched for +publisher:"University of North Texas" +contributor:("Pietkiewicz, Dorota"). Showing records 1 – 3 of 3 total matches.

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University of North Texas

1. Brown, Robert W. Development of a Novel Grease Resistant Functional Coatings for Paper-based Packaging and Assessment of Application by Flexographic Press.

Degree: 2004, University of North Texas

Recent commercial developments have created a need for alternative materials and methods for imparting oil/grease resistance to paper and/or paperboard used in packaging. The performance of a novel grease resistant functional coating comprised of polyvinyl alcohol (PVA), sodium tetraborate pentahydrate (borate) and acetonedicarboxylic acid (ACDA) and the application of said coating by means of flexographic press is presented herein. Application criteria is developed, testing procedures described, and performance assessment of the developed coating materials are made. SEM images along with contact angle data suggest that coating performance is probably attributable to decreased mean pore size in conjunction with a slightly increased surface contact angle facilitated by crosslinking of PVA molecules by both borate ions and ACDA. Advisors/Committee Members: Brostow, Witold, 1934-, Pietkiewicz, Dorota, Kaufman, Michael.

Subjects/Keywords: Coatings.; Packaging.; packaging; functional coating; grease resistance

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Brown, R. W. (2004). Development of a Novel Grease Resistant Functional Coatings for Paper-based Packaging and Assessment of Application by Flexographic Press. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc4554/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Brown, Robert W. “Development of a Novel Grease Resistant Functional Coatings for Paper-based Packaging and Assessment of Application by Flexographic Press.” 2004. Thesis, University of North Texas. Accessed October 30, 2020. https://digital.library.unt.edu/ark:/67531/metadc4554/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Brown, Robert W. “Development of a Novel Grease Resistant Functional Coatings for Paper-based Packaging and Assessment of Application by Flexographic Press.” 2004. Web. 30 Oct 2020.

Vancouver:

Brown RW. Development of a Novel Grease Resistant Functional Coatings for Paper-based Packaging and Assessment of Application by Flexographic Press. [Internet] [Thesis]. University of North Texas; 2004. [cited 2020 Oct 30]. Available from: https://digital.library.unt.edu/ark:/67531/metadc4554/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Brown RW. Development of a Novel Grease Resistant Functional Coatings for Paper-based Packaging and Assessment of Application by Flexographic Press. [Thesis]. University of North Texas; 2004. Available from: https://digital.library.unt.edu/ark:/67531/metadc4554/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University of North Texas

2. Damarla, Gowrisankar. Determination of Wear in Polymers Using Multiple Scratch Test.

Degree: 2004, University of North Texas

Wear is an important phenomenon that occurs in all the polymer applications in one form or the other. However, important links between materials properties and wear remain illusive. Thus optimization of material properties requires proper understanding of polymer properties. Studies to date have typically lacked systematic approach to all polymers and wear test developed are specific to some polymer classes. In this thesis, different classes of polymers are selected and an attempt is made to use multiple scratch test to define wear and to create a universal test procedure that can be employed to most of the polymers. In each of the materials studied, the scratch penetration depth s reaches a constant value after certain number of scratches depending upon the polymer and its properties. Variations in test parameters like load and speed are also studied in detail to understand the behavior of polymers and under different conditions. Apart from polystyrene, all the other polymers studied under multiple scratch test reached asymptotes at different scratch numbers. Advisors/Committee Members: Brostow, Witold, 1934-, D'Souza, Nandika A., Pietkiewicz, Dorota.

Subjects/Keywords: Mechanical wear.; Polymers  – Testing.; wear; polymers; scratches; scratch test; visco-elasticity

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Damarla, G. (2004). Determination of Wear in Polymers Using Multiple Scratch Test. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc4627/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Damarla, Gowrisankar. “Determination of Wear in Polymers Using Multiple Scratch Test.” 2004. Thesis, University of North Texas. Accessed October 30, 2020. https://digital.library.unt.edu/ark:/67531/metadc4627/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Damarla, Gowrisankar. “Determination of Wear in Polymers Using Multiple Scratch Test.” 2004. Web. 30 Oct 2020.

Vancouver:

Damarla G. Determination of Wear in Polymers Using Multiple Scratch Test. [Internet] [Thesis]. University of North Texas; 2004. [cited 2020 Oct 30]. Available from: https://digital.library.unt.edu/ark:/67531/metadc4627/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Damarla G. Determination of Wear in Polymers Using Multiple Scratch Test. [Thesis]. University of North Texas; 2004. Available from: https://digital.library.unt.edu/ark:/67531/metadc4627/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation


University of North Texas

3. Hagg Lobland, Haley E. Definition of Brittleness: Connections Between Mechanical and Tribological Properties of Polymers.

Degree: 2008, University of North Texas

The increasing use of polymer-based materials (PBMs) across all types of industry has not been matched by sufficient improvements in understanding of polymer tribology: friction, wear, and lubrication. Further, viscoelasticity of PBMs complicates characterization of their behavior. Using data from micro-scratch testing, it was determined that viscoelastic recovery (healing) in sliding wear is independent of the indenter force within a defined range of load values. Strain hardening in sliding wear was observed for all materials-including polymers and composites with a wide variety of chemical structures-with the exception of polystyrene (PS). The healing in sliding wear was connected to free volume in polymers by using pressure-volume-temperature (P-V-T) results and the Hartmann equation of state. A linear relationship was found for all polymers studied with again the exception of PS. The exceptional behavior of PS has been attributed qualitatively to brittleness. In pursuit of a precise description of such, a quantitative definition of brittleness has been defined in terms of the elongation at break and storage modulus-a combination of parameters derived from both static and dynamic mechanical testing. Furthermore, a relationship between sliding wear recovery and brittleness for all PBMs including PS is demonstrated. The definition of brittleness may be used as a design criterion in selecting PBMs for specific applications, while the connection to free volume improves also predictability of wear behavior. Advisors/Committee Members: Brostow, Witold, 1934-, Reidy, Rick, Pietkiewicz, Dorota, Shepherd, Nigel.

Subjects/Keywords: Brittleness; thermoplastics; tribology; free volume; Polymers  – Brittleness.; Polymers  – Testing.

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6th Edition):

Hagg Lobland, H. E. (2008). Definition of Brittleness: Connections Between Mechanical and Tribological Properties of Polymers. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc9097/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16th Edition):

Hagg Lobland, Haley E. “Definition of Brittleness: Connections Between Mechanical and Tribological Properties of Polymers.” 2008. Thesis, University of North Texas. Accessed October 30, 2020. https://digital.library.unt.edu/ark:/67531/metadc9097/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7th Edition):

Hagg Lobland, Haley E. “Definition of Brittleness: Connections Between Mechanical and Tribological Properties of Polymers.” 2008. Web. 30 Oct 2020.

Vancouver:

Hagg Lobland HE. Definition of Brittleness: Connections Between Mechanical and Tribological Properties of Polymers. [Internet] [Thesis]. University of North Texas; 2008. [cited 2020 Oct 30]. Available from: https://digital.library.unt.edu/ark:/67531/metadc9097/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hagg Lobland HE. Definition of Brittleness: Connections Between Mechanical and Tribological Properties of Polymers. [Thesis]. University of North Texas; 2008. Available from: https://digital.library.unt.edu/ark:/67531/metadc9097/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

.